QS40.481 Datasheet by PULS, LP

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PULS DIMENSION c @Nus LISIEI}3 on us £5; (£2) (E
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
POWER SUPPLY
AC 100-240V Wide-range Input
Width only 125mm, Weight only 1.9kg
95.0% Full Load and Excellent Partial Load Efficiencies
50% BonusPower®, 1440W for up to 4s
55A High Peak Current for 10ms for Easy Fuse Tripping
Safe HiccupPLUS Overload Mode
Active PFC (Power Factor Correction)
Negligible Low Input Inrush Current Surge
Full Power Between -25°C and +60°C
Current Sharing Feature for Parallel Use
Internal Data Logging for Troubleshooting Included.
Remote Control of Output Voltage
DC-OK Relay Contact
Shut-down Input
ATEX and IECEx Approved
3 Year Warranty
1/28
GENERAL DESCRIPTION
The most outstanding features of this Dimension
QS40.481 DIN-rail power supply are the extremely high
efficiency and the small size, which are achieved by a
synchronous rectification, a bridgeless PFC circuit and
additional unique design details.
Large power reserves of 150% and built-in large sized
output capacitors support the starting of heavy loads
such as DC motors or capacitive loads. In many cases this
allows the use of a unit from a lower wattage class
which saves space and money.
High immunity to transients and power surges as well as
low electromagnetic emissions makes usage in nearly
every environment possible.
The integrated input fuse as well as the near zero input
inrush current make installation and usage simple.
Diagnostics are easy due to the DC-OK relay, a green
DC-OK LED and the red overload LED.
A large international approval package for a variety of
applications makes this unit suitable for nearly every
application.
SHORT-FORM DATA
Output voltage DC 48V nominal
Adjustment range 48 - 54Vdc
Output current 20 – 17.8A continuous
30 – 26.7A short term (4s)
Output power 960W continuous
1440W short term (4s)
Output ripple < 150mVpp 20Hz to 20MHz
Input voltage AC 100-240V -15%/+10%
Mains frequency 50-60Hz ±6%
AC Input current 8.6 / 4.5A at 120 / 230Vac
Power factor 0.99 / 0.99 at 120 / 230Vac
AC Inrush current 17 / 11A peak at 120 / 230Vac
Efficiency 93.9 / 95.0% at 120 / 230Vac
Losses 62.4 / 50.5W at 120 / 230Vac
Temperature range -25°C to +70°C operational
Derating 24W/°C +60 to +70°C
between 85-90Vac see chapter 18
Hold-up time 27 / 27ms at 120 / 230Vac
Dimensions 125x124x127mm WxHxD
Weight 1900g / 4.2lb
ORDER NUMBERS
Power Supply QS40.481 48-54V Standard unit
Accessory ZM2.WALL Wall mount bracket
UF20.481 Buffer unit
YR40.482 Redundancy module
MARKINGS
IND. CONT. E
Q.
UL 508
UL 60950-1
EMC, LVD, RoHS, ATEX
Class I Div 2 IECEx ATEX
II 3G Ex nA nC II T3 Gc
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
IIIIIIIII
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
INDEX
Page Page
1. Intended Use .......................................................3
2. Installation Requirements...................................3
3. AC-Input...............................................................4
4. Input Inrush Current ...........................................5
5. DC-Input...............................................................5
6. Output .................................................................6
7. Hold-up Time.......................................................8
8. DC-OK Relay Contact ..........................................9
9. Shut-down Input .................................................9
10. Remote Control of Output Voltage .................10
11. Internal Data Logging.......................................10
12. Efficiency and Power Losses..............................11
13. Lifetime Expectancy and MTBF.........................12
14. Functional Diagram...........................................12
15. Terminals and Wiring........................................13
16. Front Side and User Elements...........................14
17. EMC....................................................................15
18. Environment ......................................................16
19. Protection Features ...........................................17
20. Safety Features ..................................................17
21. Dielectric Strength ............................................18
22. Approvals.......................................................... 18
23. Physical Dimensions and Weight ..................... 19
24. Accessories ........................................................ 20
24.1. ZM2.WALL - Wall mounting bracket .......20
24.2. UF20.481 - Buffer module ........................20
24.3. YR40.482 - Redundancy Module..............21
25. Application Notes............................................. 22
25.1. Repetitive Pulse Loading..........................22
25.2. Peak Current Capability ...........................23
25.3. External Input Protection.........................23
25.4. Charging of Batteries ...............................24
25.5. Output Circuit Breakers............................24
25.6. Parallel Use to Increase Output Power....25
25.7. Parallel Use for Redundancy ....................25
25.8. Series Operation .......................................26
25.9. Inductive and Capacitive Loads................26
25.10. Back-feeding Loads ..................................26
25.11. Operation on Two Phases ........................27
25.12. Use in a Tightly Sealed Enclosure ............27
25.13. Mounting Orientations ............................28
The information presented in this document is believed to be accurate and reliable and may change without notice.
No part of this document may be reproduced or utilized in any form without permission in writing from the publisher.
TERMINOLOGY AND ABREVIATIONS
PE and symbol PE is the abbreviation for Protective Earth and has the same meaning as the symbol .
Earth, Ground This document uses the term “earth” which is the same as the U.S. term “ground”.
T.b.d. To be defined, value or description will follow later.
AC 230V A figure displayed with the AC or DC before the value represents a nominal voltage with
standard tolerances (usually ±15%) included.
E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)
230Vac A figure with the unit (Vac) at the end is a momentary figure without any additional
tolerances included.
50Hz vs. 60Hz As long as not otherwise stated, AC 230V parameters are valid at 50Hz mains frequency.
may A key word indicating flexibility of choice with no implied preference.
shall A key word indicating a mandatory requirement.
should A key word indicating flexibility of choice with a strongly preferred implementation.
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
2/28
EllnnenJSlCan Q-Series 48V, 20A, SINGLE PHASE INPUT PULS QS40.481 I
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
1. INTENDED USE
This device is designed for installation in an enclosure and is intended for the general use such as in industrial control,
office, communication, and instrumentation equipment.
Do not use this power supply in equipment, where malfunction may cause severe personal injury or threaten human
life.
This device is designed for use in hazardous, non-hazardous, ordinary or unclassified locations.
2. INSTALLATION REQUIREMENTS
This device may only be installed and put into operation by qualified personnel.
This device does not contain serviceable parts. The tripping of an internal fuse is caused by an internal defect.
If damage or malfunction should occur during installation or operation, immediately turn power off and send unit to
the factory for inspection.
Mount the unit on a DIN-rail so that the output and input terminals are located on the bottom of the unit. For other
mounting orientations see de-rating requirements in this document. See chapter 25.13.
This device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do
not cover ventilation grid (e.g. cable conduits) by more than 15%!
Keep the following installation clearances: 40mm on top, 20mm on the bottom, 5mm on the left and right sides are
recommended when the device is loaded permanently with more than 50% of the rated power. Increase this clearance
to 15mm in case the adjacent device is a heat source (e.g. another power supply).
A disconnecting means shall be provided for the output of the power supplies when used in applications according to
CSA C22.2 No 107.1-01.
WARNING Risk of electrical shock, fire, personal injury or death.
- Do not use the power supply without proper grounding (Protective Earth). Use the terminal on the input block for
earth connection and not one of the screws on the housing.
- Turn power off before working on the device. Protect against inadvertent re-powering.
- Make sure that the wiring is correct by following all local and national codes.
- Do not modify or repair the unit.
- Do not open the unit as high voltages are present inside.
- Use caution to prevent any foreign objects from entering the housing.
- Do not use in wet locations or in areas where moisture or condensation can be expected.
- Do not touch during power-on, and immediately after power-off. Hot surfaces may cause burns.
Notes for use in hazardous location areas:
The power supply is suitable for use in Class I Division 2 Groups A, B, C, D locations and for use in Group II Category 3
(Zone 2) environments and are evaluated according to EN 60079-0:2012 and EN 60079-15:2010.
WARNING EXPLOSION HAZARDS!
Substitution of components may impair suitability for this environment. Do not disconnect the unit or operate the
voltage adjustment or S/P jumper unless power has been switched off or the area is known to be non-hazardous.
A suitable enclosure must be provided for the end product which has a minimum protection of IP54 and fulfils the
requirements of the EN 60079-15:2010.
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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PULS DIMENSION 417174, ‘4“: 4 7 7 7 41‘
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
3. AC-INPUT
AC input nom. AC 100-240V suitable for TN, TT and IT mains networks
AC input range min. 90-264Vac continuous operation
min. 85-90Vac < 55°C ambient temperature continuously allowed
> 55°C ambient temperature short term or with output
derating according Fig. 18-1
min. 60-85Vac full power for up to 200ms
min. 0-85Vac no damage to the unit
min. 264-300Vac < 500ms
Allowed voltage L or N to earth max. 300Vac continuous, IEC 62103
Input frequency nom. 50–60Hz ±6%
Turn-on voltage typ. 80Vac steady-state value, load independent, see Fig. 3-1
Shut-down voltage typ. 74Vac steady-state value, load independent, see Fig. 3-1
External input protection See recommendations in chapter 25.3.
AC 100V AC 120V AC 230V
Input current typ. 10.5A 8.6A 4.5A at 48V, 20A, see Fig. 3-3
Power factor*) typ. 0.99 0.99 0.99 at 48V, 20A, see Fig. 3-4
Crest factor**) typ. 1.47 1.53 1.56 at 48V, 20A
Start-up delay typ. 800ms 750ms 700ms see Fig. 3-2
Rise time typ. 16ms 16ms 16ms at 48V, 20A, resistive load,
0mF see Fig. 3-2
typ. 55ms 55ms 55ms at 48V, 20A, resistive load,
20mF see Fig. 3-2
Turn-on overshoot max. 100mV 100mV 100mV see Fig. 3-2
*) The power factor is the ratio of the true (or real) power to the apparent power in an AC circuit.
**) The crest factor is the mathematical ratio of the peak value to RMS value of the input current waveform.
Fig. 3-1 Input voltage range Fig. 3-2 Turn-on behavior, definitions
Turn-on
85
Rated input range
V
IN
P
OUT
74 264Vac
Shut-down
80
Start-up
delay Rise
Time
Overshoot
- 5%
Output
Voltage
Input
Voltage
Fig. 3-3 Input current vs. output load at 48V Fig. 3-4 Power factor vs. output load at 48V
20A
2 4 6 8 10 12 14 16 18
0
2
4
6
8
10
12A
Input Current, typ.
A: 100Vac
B: 120Vac
C: 230Vac
A
B
C
Output Current
Power Factor, typ.
2 4 6 8 10 12 14 16 18 20A
0.75
0.8
0.85
0.9
0.95
1.0
Output Current
A: 100Vac
B: 120Vac
C: 230Vac
A
B
C
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
4/28
PULS DIMENSION Wm ‘ wPWJ‘“L“I‘“L"I[\H‘l
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
4. INPUT INRUSH CURRENT
The power supply is equipped with an active inrush current limitation circuit, which limits the input inrush current
after turn-on to a negligible low value. The input current is usually smaller than the steady state input current.
AC 100V AC 120V AC 230V
Inrush current*) max. 25Apeak 22Apeak 16Apeak over entire temperature range;
mains interruptions > 1s
typ. 20Apeak 17Apeak 11Apeak over entire temperature range;
mains interruptions > 1s
Inrush energy max. 5A2s 5A2s 5A2s over entire temperature range;
mains interruptions > 1s
*) The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on.
Fig. 4-1 Typical turn-on behaviour at nominal
load and 25°C ambient temperature
Output
100mS/DIV
Input
230Vac
48Vdc
Input Current 5A / DIV
5. DC-INPUT
Do not operate this power supply with DC-input voltage. Check the CPS20.481-D1 unit instead. Two CPS20.241-D1
units in parallel might be necessary.
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
5/28
IIIIIIIII
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
6. OUTPUT
Output voltage nom. DC 48V
Adjustment range min. 48-54Vdc guaranteed
max. 56Vdc****) at clockwise end position of potentiometer
Factory setting typ. 48.0Vdc ±0.2%, at full load, cold unit, in “single use” mode
typ. 46.0Vdc ±0.5%, at full load, cold unit, in “parallel use” mode
typ. 48.0Vdc at no load, cold unit, in “parallel use” mode
Line regulation max. 10mV 85-300Vac
Load regulation max. 50mV in “single use” mode: static value, 0AÆ20A, see Fig. 6-1
typ. 2000mV in “parallel use” mode: static value, 0AÆ20A,
see Fig. 6-2
Ripple and noise voltage max. 150mVpp 20Hz to 20MHz, 50Ohm
Output current nom. 20A continuously available at 48V, see Fig. 6-1 and Fig. 6-2
nom. 17.8A continuously available at 54V, see Fig. 6-1 and Fig. 6-2
nom. 30A short term available BonusPower®*), at 48V
for typical 4s, see Fig. 6-1 and Fig. 6-2
nom. 26.7A short term available BonusPower®*), at 54V
for typical 4s, see Fig. 6-1 and Fig. 6-2
typ. 55A up to 10ms, output voltage stays above 40V, see Fig.
6-4, This peak current is available once every second.
See chapter 25.2 for more peak current measurements.
Output power nom. 960W continuously available at 48-54V
nom. 1440W*) short term available BonusPower®*) at 48-54V
BonusPower® time typ. 4s duration until the output voltage dips, see Fig. 6-5
BonusPower® recovery time typ. 7s overload free time to reset power manager, see Fig. 6-6
Overload behavior cont. current output voltage > 40Vdc, see Fig. 6-1
HiccupPLUS mode**) output voltage < 40Vdc, see Fig. 6-1
Short-circuit current min. 30A***) load impedance 50mOhm, see Fig. 6-3
max. 35A***) load impedance 50mOhm, see Fig. 6-3
max. 11.5A average (R.M.S.) current, load impedance 50mOhm, see
Fig. 6-3
typ. 62A up to 10ms, load impedance <10mOhm, see Fig. 6-4
Output capacitance typ. 3 700μF included in the power supply
*) BonusPower®, short term power capability (up to typ. 4s)
The power supply is designed to support loads with a higher short-term power requirement without damage or shutdown. The short-
term duration is hardware controlled by an output power manager. This BonusPower® is repeatedly available. Detailed information
can be found in chapter 25.1. If the power supply is loaded longer with the BonusPower® than shown in the Bonus-time diagram (see
Fig. 6-5), the max. output power is automatically reduced to 960W. If the power requirement is continuously above 960W and the
voltage falls below approx. 40V (due to the current regulating mode at overload), the unit shuts-off and makes periodical restart
attempts. This behavior is called hiccup mode which is described below. If the voltage is above 40V, the unit continuously delivers
current.
**) HiccupPLUS Mode
Up to 4s of overloading, the power supply delivers continuous output current. After this, the output power is reduced to nearly zero
for approx. 17s before a new start attempt is automatically performed. If the overload has been cleared, the device will operate
normally. If the overload still exists, the output current will be delivered for 2 to 4s (depending on the overload) again followed by a
17s rest time. This cycle is repeated as long as the overload exists. See Fig. 6-3. During the off-period a small rest voltage and rest
current is present on the output.
***) Discharge current of output capacitors is not included.
****) This is the maximum output voltage which can occur at the clockwise end position of the potentiometer due to tolerances. It is not
guaranteed value which can be achieved. The typical value is about 55V.
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
6/28
QS40.48 48V, 20A, SINGLE PHASE INP DIMENSION 0-Series PULS LJ+1+,,‘L,J‘ 7477‘p74 \ ”1”T”F’1 1k 77777 ’F’T’MEXF
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
Fig. 6-1 Output voltage vs. output current in
“single use” mode, typ.
Fig. 6-2 Output voltage vs. output current in
“parallel use” mode, typ.
Output Voltage
0
0 5 10 15 20
8
16
24
56V
32
40
48
3025 35A
Output Current
Adjustment Range
Hiccup
mode
AB
A
B
Short-term (4s)
then switching
to curve
Continuously
available
A
A B
Output Voltage
(Parallel Use, typ.)
42V 01020
44V
46V
48V
56V
50V
52V
54V
30A25155
Adjustment Range
Factory
setting
Continuously
allowed Bonus
Power
Output Current
Fig. 6-3 Short-circuit on output, HiccupPLUS mode, typ. Fig. 6-4 Dynamic overcurrent capability, typ.
Output
Current
0
35A
17s 17s
17s 2s 2s
2s
t
Short -circuit Normal
operation
Normal
operation
Output Voltage
(dynamic behavior, <10ms)
0
0
8
16
24
54V
32
40
48
70A30 6010 20 40 50
Adjustment
Range
Output Current
Fig. 6-5 Bonus time vs. output power Fig. 6-6 BonusPower® recovery time
max.
Bonus Time
0
100 120 130 140 150 170%
1
2
3
4
5s
110 160
Output Power
min.
Power
Demand
100%
t
t
Limitation by
Power Manager
Output
Voltage
Bonus Power disabled
Bonus
Time
Recovery Time
The BonusPower® is available as soon as power comes on and after the end of an output short circuit or output
overload.
Fig. 6-7 BonusPower® after input turn-on Fig. 6-8 BonusPower® after output short
100%
Output
Voltage
Input
Voltage
Bonus
Power
Output
Power
150%
Short of
Output
100%
Output
Voltage
Bonus
Power
Output
Power
150%
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
7/28
PULS DIMENSION _,,,,r,,,r ,,,,,,,,,, —O—v—v—v— / ””V”’V’43v IOA mm," m— iiiiriiiriiiriiifiii I \ 7,7,},777F743V10AAXE ,,
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
7. HOLD-UP TIME
AC 100V AC 120V AC 230V
Hold-up Time typ. 54ms 54ms 54ms at 48V, 10A, see Fig. 7-1
min. 45ms 45ms 45ms at 48V, 10A, see Fig. 7-1
typ. 27ms 27ms 27ms at 48V, 20A, see Fig. 7-1
min. 23ms 23ms 23ms at 48V, 20A, see Fig. 7-1
Fig. 7-1 Hold-up time vs. input voltage Fig. 7-2 Shut-down behavior, definitions
0
10ms
20ms
30ms
40ms
60ms
90 120 155 190 230Vac
Input Voltage
50ms
Hold-up Time
48V, 20A, typ.
48V, 10A, min.
48V, 10A, typ.
48V, 20A, min.
- 5%
Hold-up Time
Zero Transition
Output
Voltage
Input
Voltage
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
8/28
PULS DIMENSION Option B:
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
8. DC-OK RELAY CONTACT
This feature monitors the output voltage, which is produced by the power supply itself. It is independent of a back-fed
voltage from a unit connected in parallel to the power supply output.
Contact closes As soon as the output voltage reaches 90% of the adjusted output voltage.
Contact opens As soon as the output voltage dips more than 10% below the adjusted output voltage.
Short dips will be extended to a signal length of 250ms. Dips shorter than 1ms will be ignored.
Contact re-closes As soon as the output voltage exceeds 90% of the adjusted voltage.
Contact ratings max 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A resistive load
min 1mA at 5Vdc min. permissible load
Isolation voltage See dielectric strength table in section 21.
Fig. 8-1 DC-ok relay contact behavior
250ms
0.9* V
ADJ
<
1ms
10%
open
V
OUT
= V
ADJ
openclosed closed
>
1ms
9. SHUT-DOWN INPUT
This feature allows a switch-off of the output of the power supply with a signal switch or an external voltage. The
shut-down occurs immediately while the turn-on is delayed up to 350ms. In a shut-down condition, the output voltage
is <4V and the output power is <0.5W.
The voltage between different minus pole output terminals must be below 1V when units are connected in parallel. In
a series operation of multiple power supplies only wiring option “A” with individual signal switches is allowed.
Please note:
- Option C requires a current sink capability of the voltage source. Do not use a blocking diode.
- The shut-down function has no safety feature included.
Fig. 9-1 Activation of the shut-down input
15
16
OFF: linked
ON : open
Shut-
down
Input
Option A:
15
16
OFF: I > 0.3mA
ON : I < 0.1mA
Shut-
down
Input
Option B:
-
(via open
collector) I
n.c.
15
16
OFF: U < 1V
ON : U = 4 -29V
Shut-
down
Input
Option C:
-
(via external
voltage
+
U
n.c.
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
9/28
PULS DIMENSION
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
10. REMOTE CONTROL OF OUTPUT VOLTAGE
The shut-down input can also be used to remotely adjust the output voltage between typically 44Vdc and 54Vdc. All
other functions of shut-down input remain the same.
The control voltage is referenced to the main ground (negative output voltage)
Fig. 10-1 Remote control of the output voltage Fig. 10-2 Applying the control voltage
Output Voltage
24V
0V 5V
28V
32V
36V
56V
40V
44V
52V
Control Voltage
48V
10V
Potentiometer:
54V setting
48V setting
15
16
Control
Voltage
Shut-
down
Input
-
+
n.c.
Instructions:
1. Set the unit into “Single Use” mode
2. Set the output voltage adjustment (48-54V) to the maximum desired voltage.
3. Apply a control voltage to reduce the output voltage
11. INTERNAL DATA LOGGING
A protected microcontroller inside the power supply acquires and stores operating data during the life of the unit. The
data can be downloaded with a small tool and special software by the PULS service and repair personnel, even when
the unit is defect. The data allows for better troubleshooting. Analysis of what happened before a failure can be
determined much more accurately.
Acquired data:
- Family name of unit (QS40), revision of firmware
- Operational hours
- Expired portion of lifetime (combination of temperature and period of time)
- Maximum ambient temperatures with timestamp (max. 47 values)
- Maximal input voltages with timestamp (max. 47 values) and type of input voltage (AC or DC)
- Failure report (various internal errors)
- Number and timestamp of input overvoltage transients
- Number and timestamp of over-temperature shut-downs
- Number of turn-on sequences
The data will be acquired with a fixed sampling rate unless the peak detectors do trigger due to an abnormal
condition. In such cases, the abnormal condition will be captured. Furthermore, data will be acquired every time
shortly before the unit switches off.
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
10/28
PULS DHWENUSHJN ””’\”’T”’T”’F”1 \ ”\”’T”’T”’r”1 100v 7+7477P
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
12. EFFICIENCY AND POWER LOSSES
AC 100V AC 120V AC 230V
Efficiency typ. 93.5% 93.9% 95.0% at 48V, 20A
Average efficiency*) typ. 92.9% 93.3% 93.9% 25% at 5A, 25% at 10A, 25%
at 15A. 25% at 20A
Power losses typ. 3.6W 3.5W 3.3W with activated shut-down
typ. 13.5W 12.8W 12.8W at 48V, 0A (no load)
typ. 35.6W 34.0W 30.1W at 48V, 10A (half load)
typ. 66.7W 62.4W 50.5W at 48V, 20A (full load)
*) The average efficiency is an assumption for a typical application where the power supply is loaded with 25% of the nominal load for 25%
of the time, 50% of the nominal load for another 25% of the time, 75% of the nominal load for another 25% of the time and with 100%
of the nominal load for the rest of the time.
Fig. 12-1 Efficiency vs. output current at 48V,
typ.
Fig. 12-2 Losses vs. output current at 48V,
typ.
Efficiency
4 6 8 101214161820A
88
89
90
91
92
93
Output Current
94
95
96%
120Vac
100Vac
230Vac
Power Losses
02468101214 20A
10
0
30
40
50
70
80W
120Vac
100Vac
230Vac
16 16
60
20
Output Current
Fig. 12-3 Efficiency vs. input voltage at 48V,
20A, typ.
Fig. 12-4 Losses vs. input voltage at 48V, 20A,
typ.
Efficiency
85 120 155 190 225 260Vac
89
90
91
92
Input Voltage
93
94
95%
Power Losses
20
30
40
50
60
70
80W
85 120 155 190 225 260Vac
Input Voltage
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
11/28
PULS DIMENSION .' """"""""""""" ‘ | 1L®\ >—|— ‘ 3—:P i _ 7 :12 (9)1? * TEE J \ l 1% ‘ ® : A B; : I a : |:F® +< h—c="">
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
13. LIFETIME EXPECTANCY AND MTBF
AC 100V AC 120V AC 230V
Calculated lifetime expectancy*) 299 000h*) 305 000h*) 327 000h*) at 48V, 10A and 25°C
106 000h 108 000h 116 000h at 48V, 10A and 40°C
180 000h*) 193 000h*) 253 000h*) at 48V, 20A and 25°C
64 000h 68 000h 90 000h at 48V, 20A and 40°C
MTBF**) SN 29500, IEC 61709 491 000h 481 000h 537 000h at 48V, 20A and 25°C
274 000h 269 000h 300 000h at 48V, 20A and 40°C
MTBF**) MIL HDBK 217F
Ground Benign
170 000h 171 000h 183 000h at 48V, 20A and 25°C;
Ground Benign GB25
126 000h 127 000h 137 000h at 48V, 20A and 40°C;
Ground Benign GB40
MTBF**) MIL HDBK 217F
Ground Fixed
36 000h 36 000h 39 000h at 48V, 20A and 25°C;
Ground Fixed GF25
27 000h 27 000h 30 000h at 48V, 20A and 40°C;
Ground Fixed GF40
*) The calculated lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by the
lifetime expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and is calculated according
to the capacitor’s manufacturer specification. The manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15
years (131 400h). Any number exceeding this value is a calculated theoretical lifetime which can be used to compare devices.
**) MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicates reliability of a
device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily represent the life of a product.
The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h means that
statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it can not be determined if the failed unit
has been running for 50 000h or only for 100h.
14. FUNCTIONAL DIAGRAM
Fig. 14-1 Functional diagram
+
+
-
-
V
OUT
DC-ok
Contact
Output
Over-
Voltage
Protection
Bridgeless
PFC
Converter
Input Fuse
Input Filter
Inrush Limiter
Output
Voltage
Regulator
Power
Converter
Output
Filter
DC ok
Relay
Output
Voltage
Monitor
Output
Power
Manager
Temper-
ature
Shut-
down
Overload
LED
DC-ok
LED
N
L
Single /
Parallel
Shut-down
Input &
Remote
Control
Shut-
down
13
14
15
16
Event Datalogger
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
12/28
PULS QS40.48 I EllnnenJSlCan Q-Series 48V, 20A, SINGLE PHASE INP Dism Term
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
15. TERMINALS AND WIRING
The terminals are IP20 Finger safe constructed and suitable for field and factory wiring.
Input Output DC-OK, Shut-down
Type screw termination screw termination spring-clamp termination
Solid wire 0.5-6mm2 0.5-16mm2 0.15-1.5mm2
Stranded wire 0.5-4mm2 0.5-10mm2 0.15-1.5mm2
American Wire Gauge AWG 20-10 AWG 22-8 AWG 26-14
Max. wire diameter 2.8mm
(including ferrules)
5.2mm
(including ferrules)
1.5mm
(including ferrules)
Wire stripping length 7mm / 0.28inch 12mm / 0. 5inch 7mm / 0.28inch
Screwdriver 3.5mm slotted or cross-
head No 2
3.5mm or 5mm slotted
or cross-head No 2
3mm slotted
(to open the spring)
Recommended tightening torque 1Nm, 9lb.in 2.3Nm, 20.5lb.in Not applicable
Instructions:
a) Use appropriate copper cables that are designed for minimum operating temperatures of:
60°C for ambient up to 45°C and
75°C for ambient up to 60°C minimum
90°C for ambient up to 70°C minimum.
b) Follow national installation codes and installation regulations!
c) Ensure that all strands of a stranded wire enter the terminal connection!
d) Do not use the unit without PE connection.
e) Unused terminal compartments should be securely tightened.
f) Ferrules are allowed.
Daisy chaining:
Daisy chaining (jumping from one power supply output to the next) is allowed as long as the average output current
through one terminal pin does not exceed 54A. If the current is higher, use a separate distribution terminal block as
shown in Fig. 15-2.
Fig. 15-1 Daisy chaining of outputs Fig. 15-2 Using distribution terminals
Load
+
-
Power
Supply
+ +
- -
Output
Power
Supply
+ +
- -
Output
max 54A!
Distribution
Terminals
Load
+
-
Power
Supply
+ +
- -
Output
Power
Supply
+ +
- -
Output
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
13/28
PULS DIMENSION 0-Series QS40.48 48V, 20A, SINGLE PHASE INP PULS nwemslnm % aw rmsum \> \n HI ‘0
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
16. FRONT SIDE AND USER ELEMENTS
Fig. 16-1 Front side
A Input Terminals (Screw terminals)
N, L Line input
...PE (Protective Earth) input
B Output Terminals (Screw terminals, two pins per pole)
+ Positive output
Negative (return) output
C “Parallel Use” “Single Use” Selector
Set jumper to “Parallel Use” when power supplies are
connected in parallel to increase the output power. In order
to achieve a sharing of the load current between the
individual power supplies, the “parallel use” regulates the
output voltage in such a manner that the voltage at no load
is approx. 4% higher than at nominal load. See also chapter
25.6. A missing jumper is equal to a “Single Use” mode.
D Output Voltage Potentiometer
Multi turn potentiometer;
Open the flap to set the output voltage.
Factory set: 48.0V at full output current, “Single Use” mode.
E DC-OK LED (green)
On, when the voltage on the output terminals is >90% of the
adjusted output voltage
F Overload LED (red)
- On, when the voltage on the output terminals is <90% of
the adjusted output voltage, or in case of a short circuit in
the output.
- Flashing, when the shut-down has been activated or the
unit has switched off due to over-temperature.
- Input voltage is required
G DC-OK Relay Contact
The DC-OK relay contact is synchronized with the DC-OK LED.
See chapter 8 for details.
H Shut-down and Remote Control Input
Allows the power supply to be shut down. Can be activated
with a switch contact or an external voltage.
The remote control input allows adjusting the output voltage
between 44V and 54V. See chapter 9 and 10 for details.
Indicators, LEDs
Overload LED DC-OK LED DC-OK Contact
Normal mode OFF ON Closed
During BonusPower® OFF ON Closed
Overload (Hiccup mode) flashing OFF Open
Output short circuit flashing OFF Open
Temperature Shut-down flashing OFF Open
Active Shut-down input flashing OFF Open
No input power OFF OFF Open
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
14/28
PULS QS40.481 I EllnnenJSlCan Q-Series 48V, 20A, SINGLE PHASE INPUT
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
17. EMC
The power supply is suitable for applications in industrial environment as well as in residential, commercial and light
industry environment without any restrictions. A detailed EMC report is available on request.
EMC Immunity According generic standards: EN 61000-6-1 and EN 61000-6-2
Electrostatic discharge EN 61000-4-2 contact discharge
air discharge
8kV
15kV
Criterion A
Criterion A
Electromagnetic RF field EN 61000-4-3 80MHz-2.7GHz 20V/m Criterion A
Fast transients (Burst) EN 61000-4-4 input lines
output lines
signal lines (coupling clamp)
4kV
2kV
2kV
Criterion A
Criterion A
Criterion A
Surge voltage on input EN 61000-4-5 L Æ N
L Æ PE, N Æ PE
2kV
4kV
Criterion A
Criterion A
Surge voltage on output EN 61000-4-5 + Æ -
+ / - Æ PE
1kV
1kV
Criterion A
Criterion A
Surge voltage on signal lines EN 61000-4-5 DC-OK signal Æ PE 1kV Criterion A
EN 61000-4-5 Shut-down input Æ PE not relevant due to wire length **)
Conducted disturbance EN 61000-4-6 0.15-80MHz 20V Criterion A
Mains voltage dips EN 61000-4-11 0% of 100Vac
40% of 100Vac
70% of 100Vac
0% of 200Vac
40% of 200Vac
70% of 200Vac
0Vac, 20ms
40Vac, 200ms
70Vac, 500ms
0Vac, 20ms
80Vac, 200ms
140Vac, 500ms
Criterion A
Criterion C
Criterion A
Criterion A
Criterion A
Criterion A
Voltage interruptions EN 61000-4-11 0% of 200Vac (=0V) 5000ms Criterion C
Voltage sags SEMI F47 0706 dips on the input voltage according to SEMI F47 standard
80% of 120Vac (96Vac)
70% of 120Vac (84Vac)
50% of 120Vac (60Vac)
1000ms
500ms
200ms
Criterion A
Criterion A
Criterion A
Powerful transients VDE 0160 over entire load range 750V, 1.3ms Criterion B*)
*) Criterion A is fulfilled for output current up to 15A.
**) Do not use longer wires than 30m for the shut-down input or use an additional protection.
Criterions:
A: Power supply shows normal operation behavior within the defined limits.
B: Output voltage will dip from 48V to 42V for 5ms
C: Temporary loss of function is possible. Power supply may shut-down and restarts by itself. No damage or hazards for the power supply
will occur.
EMC Emission According generic standards: EN 61000-6-3 and EN 61000-6-4
Conducted emission
input lines
EN 55011, EN 55022, FCC Part 15, CISPR 11,
CISPR 22
Class B
Conducted emission
output lines
IEC/CISPR 16-1-2, IEC/CISPR 16-2-1 10dB higher than average limits for DC
power port according EN 61000-6-3***)
Radiated emission EN 55011, EN 55022 Class B
Harmonic input current EN 61000-3-2 fulfilled for class A equipment
Voltage fluctuations, flicker EN 61000-3-3 fulfilled**)
This device complies with FCC Part 15 rules.
Operation is subjected to following two conditions: (1) this device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause undesired operation.
**) Tested with constant current loads, non pulsing
***) Restrictions apply for applications in residential, commercial and light-industrial environments, where local DC power networks according
to EN 61000-6-3 are involved. No restrictions for all kinds of industrial applications.
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
15/28
PULS DIMENSION 0-Series QS40.481 48V, 20A, SINGLE PHASE INPUT ’7777‘7777777T777VAV’ \ w 7* ,,,,, ‘,,,,,T,,:>:;; \ x ”T ,,,,, T’ ,,+,,,,,L,
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
Switching Frequencies The power supply has four converters with four different switching frequencies included.
One is nearly constant. The others are input voltage and load dependent.
Switching frequency 1 105kHz Resonant converter, nearly constant
Switching frequency 2 1kHz to 150kHz Boost converter, input voltage and load dependent
Switching frequency 3 1kHz to 100kHz PFC converter, input voltage and load dependent
Switching frequency 4 25kHz to 45kHz Aux. converter, input voltage and load dependent
18. ENVIRONMENT
Operational temperature*) -25°C to +70°C (-13°F to 158°F) reduce output power according Fig. 18-1
Storage temperature -40 to +85°C (-40°F to 185°F) for storage and transportation
Output de-rating 24W/°C 60-70°C (140°F to 158°F)
Humidity**) 5 to 95% r.H. IEC 60068-2-30
Vibration sinusoidal 2-17.8Hz: ±1.6mm; 17.8-500Hz: 1g ***)
2 hours / axis
IEC 60068-2-6
Shock 15g 6ms, 10g 11ms ***)
3 bumps / direction, 18 bumps in total
IEC 60068-2-27
Altitude 0 to 2000m (0 to 6 560ft) without any restrictions
2000 to 6000m (6 560 to 20 000ft) reduce output power or ambient temperature,
see Fig. 18-2
IEC 62103, EN 50178, overvoltage category II
Altitude de-rating 60W/1000m or 5°C/1000m > 2000m (6500ft), see Fig. 18-2
Over-voltage category III IEC 62103, EN 50178, altitudes up to 2000m
II altitudes from 2000m to 6000m
Degree of pollution 2 IEC 62103, EN 50178, not conductive
LABS compatibility The unit does not release any silicone or other LABS-critical substances and is suitable for
use in paint shops.
*) Operational temperature is the same as the ambient or surrounding temperature and is defined as the air temperature 2cm below the
unit.
**) Do not energize while condensation is present.
***) Higher levels allowed when using the wall mounting bracket ZM2.WALL
Fig. 18-1 Output current vs. ambient temp. Fig. 18-2 Output current vs. altitude
Allowed Output Current at 48V
0
-25 0 20 40 70°C
5
10
15
20
25
30A
60
Ambient Temperature
A
B
A... 90-264Vac
B... 85-90Vac
short-term (4s)
continuous
0
0 2000 4000 6000m
5
10
15
20
25
30A
continuous
Altitude
A... Tamb < 60°C
B... Tamb < 50°C
C... Tamb < 40°C
ABC
short-term (4s)
Allowed Output Current at 48V
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
16/28
IIIIIIIII
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
19. PROTECTION FEATURES
Output protection Electronically protected against overload, no-load and short-circuits*)
Output over-voltage protection typ. 58.8Vdc
max. 60Vdc
In case of an internal power supply defect, a redundant
circuit limits the maximum output voltage. The output
shuts down and automatically attempts to restart.
Degree of protection IP 20 EN/IEC 60529
Caution: For use in a controlled environment according
to CSA 22.2 No 107.1-01.
Penetration protection > 5mm e.g. screws, small parts
Over-temperature protection yes Output shut-down with automatic restart
Input transient protection MOV (Metal Oxide Varistor)
Internal input fuse included not user replaceable
*) In case of a protection event, audible noise may occur.
20. SAFETY FEATURES
Input / output separation*) SELV IEC/EN 60950-1
PELV IEC/EN 60204-1, EN 50178, IEC 62103, IEC 60364-4-41
double or reinforced insulation
Class of protection I PE (Protective Earth) connection required
Isolation resistance > 5MOhm input to output, 500Vdc
PE resistance < 0.1Ohm
Touch current (leakage current) typ. 0.39mA / 1.0mA 100Vac, 50Hz, TN-,TT-mains / IT-mains
typ. 0.56mA / 1.43mA 120Vac, 60Hz, TN-,TT-mains / IT-mains
typ. 0.90mA / 2.25mA 230Vac, 50Hz, TN-,TT-mains / IT-mains
max. 0.50mA / 1.21mA 110Vac, 50Hz, TN-,TT-mains / IT-mains
max. 0.71mA / 1.73mA 132Vac, 60Hz, TN-,TT-mains / IT-mains
max. 1.18mA / 2.82mA 264Vac, 50Hz, TN-,TT-mains / IT-mains
*) double or reinforced insulation
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
17/28
PULS QS40.48 I EllnnenJSlCan Q-Series 48V, 20A, SINGLE PHASE INP ll: C E IECEE CE SCHEME c.Nus LISTED I?“ [IS £5; (£3)
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
21. DIELECTRIC STRENGTH
The output voltage is floating and has no ohmic connection to the ground. Type and factory tests are conducted by
the manufacturer. Field tests may be conducted in the field using the appropriate test equipment which applies the
voltage with a slow ramp (2s up and 2s down). Connect all input-terminals together as well as all output poles before
conducting the test. When testing, set the cut-off current settings to the value in the table below.
Fig. 21-1 Dielectric strength
A B C D
Type test 60s 2500Vac 3000Vac 500Vac 500Vac
Factory test 5s 2500Vac 2500Vac 500Vac 500Vac
Field test 5s 2000Vac 2000Vac 500Vac 500Vac
Cut-off current setting > 20mA > 20mA > 40mA > 1mA
AD
C
B
B
*)
L
Input DC-ok
13
14
Earth, PE Output
15/16
+/-
Shut-down
N
To fulfil the PELV requirements according to EN60204-1 § 6.4.1, we
recommend that either the + pole, the – pole or any other part of
the output circuit shall be connected to the protective earth
system. This helps to avoid situations in which a load starts
unexpectedly or can not be switched off when unnoticed earth
faults occur.
B*) When testing input to DC-OK ensure that the max. voltage between DC-OK and the output is not exceeded (column D). We recommend
connecting DC-OK pins and the output pins together when performing the test.
22. APPROVALS
EC Declaration of Conformity
The CE mark indicates conformance with the
- EMC directive 2004/108/EC,
- Low-voltage directive (LVD) 2006/95/EC
- RoHS directive 2011/65/EC and the
- ATEX directive 94/9/EC (for use in explosive atmospheres).
IEC 60950-1 2nd Edition
CB Scheme,
Information Technology Equipment
Applicable for altitudes up to 2000m.
UL 508
IND. CONT. EQ.
Listed for use as Industrial Control Equipment;
U.S.A. (UL 508) and Canada (C22.2 No. 107-1-01);
E-File: E198865
UL 60950-1, 2nd Edition
Recognized for use as Information Technology Equipment,
Level 5; U.S.A. (UL 60950-1) and Canada (C22.2 No. 60950-1);
E-File: E137006
Applicable for altitudes up to 2000m.
ANSI / ISA 12.12.01-2013
Class I Div 2
Recognized for use in Hazardous Location Class I Div 2 T3
Groups A,B,C,D systems; U.S.A. (ANSI / ISA 12.12.01-2013) and
Canada (C22.2 No. 213-M1987)
EN 60079-0, EN 60079-15
ATEX
II 3G Ex nA nC II T3 Gc
Approval for use in hazardous locations Zone 2 Category 3G.
Number of ATEX certificate: EPS 14 ATEX 1 638 X
The power supply must be built-in in an IP54 enclosure.
IEC 60079-0, IEC 60079-15 IECEx Suitable for use in Class 1 Zone 2 Groups IIa, IIb and IIc
locations. Number of IECEx certificate: IECEx EPS 14.0007X
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
18/28
PULS DIMENSION 0-Series QS40.481 48V, 20A, SINGLE PHASE INPUT \ l E wsw D DC ck o 5qu w ,L Over‘oad o um; 75.4 W'uflh 125mm Heig M: 124mm, 4.88" Deplh:127mm, 5.0" DlNrRail depth
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
23. PHYSICAL DIMENSIONS AND WEIGHT
Width 125mm 4.92’’
Height 124mm 4.88’’
Depth 127mm 5.0’’
The DIN-rail height must be added to the unit depth to calculate the total required
installation depth.
Weight 1900g / 4.2lb
DIN-Rail Use 35mm DIN-rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm.
Housing material Aluminium body, steel cover
Installation clearances See chapter 2
Fig. 23-1 Front view Fig. 23-2 Side view
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
19/28
PULS DIMENSION
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
24. ACCESSORIES
24.1. ZM2.WALL - WALL MOUNTING BRACKET
This bracket is used to mount specific DIMENSION units onto a flat surface without
utilizing a DIN-Rail.
24.2. UF20.481 - BUFFER MODULE
This buffer unit is a supplementary device for DC 48V power supplies. It delivers power
to bridge typical mains failures or extends the
hold-up time after turn-off of the AC power.
In times when the power supply provide
sufficient voltages, the buffer unit stores
energy in integrated electrolytic capacitors. In
case of mains voltage fault, this energy is
released again in a regulated process.
DC
Buffer
Unit(s)
Power
Supply Load
AC
+
-
s
The buffer unit does not require any control wiring. It can be added in parallel to the
load circuit at any given point. Buffer units can be added in parallel to increase the
output ampacity or the hold-up time.
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
20/28
PULS DIMENSION
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
24.3. YR40.482 - REDUNDANCY MODULE
The YR40.482 is equipped with two input channels (20A each), which are individually
decoupled by utilizing mosfet technology. The output current can go as high as 40A.
Using mosfets instead of diodes reduces the heat generation and the voltage drop between
input and output.
The YR40.482 does not require an additional auxiliary voltage and is self-powered even in
case of a short circuit across the output.
Due to the low power losses, the unit is very slender and only requires 46mm width on the
DIN-rail.
Fig. 24-1 Typical 1+1 Redundant configuration for 20A with a dual redundancy module
L
N
PE
I
L N PE
+ +
- -
48V, 20A
Parallel Use
Single Use
DC-
OK
QS40.481
48-54V 960W
Power Supply
AC Input
L N PE
+ +
- -
48V, 20A
Parallel Use
Single Use
DC-
OK
QS40.481
48-54V 960W
Power Supply
AC Input
48V
20A
Load
Failure
Monitor
YR40.482
Redundancy
Module
Input
1
Input
2
Output
+
-
+
-
+
-
I
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
21/28
IIIIIIIII
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
25. APPLICATION NOTES
25.1. REPETITIVE PULSE LOADING
Typically, a load current is not constant and varies over time. This power supply is designed to support loads with a
higher short-term power demand (=BonusPower®). The short-term duration is hardware controlled by an output
power manager and is available on a repeated basis. If the BonusPower® load lasts longer than the hardware
controller allows it, the output voltage will dip and the next BonusPower® is available after the BonusPower® recovery
time (see chapter 6) has elapsed.
To avoid this, the following rules must be met:
a) The power demand of the pulse must be below 150% of the nominal output power.
b) The duration of the pulse power must be shorter than the allowed BonusPower® time. (see output section)
c) The average (R.M.S.) output current must be below the specified continuous output current.
If the R.M.S. current is higher, the unit will respond with a thermal shut-down after a period of time. Use the
maximum duty cycle curve (Fig. 25-2) to check if the average output current is below the nominal current.
d) The duty cycle must be below 0.75.
Fig. 25-1 Repetitive pulse loads, definitions Fig. 25-2 Max. duty cycle curve
100%
P
PEAK
T
PEAK
P
0
T
0
max.
150%
150%100
0
0.2
0.4
0.6
0.75
Duty Cycle
110 120 130 140
P
PEAK
P
0
= 10%
P
0
= 50%
P
0
= 75%
P
0
= 100%
P0 Base load (W)
PPEAK Pulse load (above 100%)
T0 Duration between pulses (s)
TPEAK Pulse duration (s)
D
uty
C
ycle
T
0
=
T
peak
-
(D
uty
C
ycle
x T
peak
)
T
peak +
T
0
T
peak
D
uty
C
ycle
=
Example: A load is powered continuously with 480W (= 50% of the rated output load). From time to time a peak
power of 1440W (= 150% of the rated output load) is needed for 1 second.
The question is: How often can this pulse be supplied without overloading the power supply?
- Make a vertical line at PPEAK = 150% and a horizontal line where the vertical line crosses the P0 = 50%
curve. Read the max. duty cycle from the duty cycle-axis (= 0.37)
- Calculate the required pause (base load) length T0:
22/28
- Result: The required pause length = 1.7s
- Max. repetition rate = pulse +pause length = 2.7s
More examples for pulse load compatibility:
PPEAK P
0 T
PEAK T
0 P
PEAK P
0 T
PEAK T
0
1440W 960W 1s >25s 1440W 480W 0.1s >0.16s
1440W 0W 1s >1.3s 1440W 480W 1s >1.6s
1200W 480W 1s > 0.75s 1440W 480W 3s >4.9s
D
uty
C
ycle
T
0
=
T
peak
-
(D
uty
C
ycle
x T
peak
)
0.37
1s
-
(0.37 x 1s)
==1.7s
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
PULS DIMENSION
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
25.2. PEAK CURRENT CAPABILITY
The power supply can deliver peak currents (up to several milliseconds) which are higher than the specified short term
currents.
This helps to start current demanding loads. Solenoids, contactors and pneumatic modules often have a steady state
coil and a pick-up coil. The inrush current demand of the pick-up coil is several times higher than the steady-state
current and usually exceeds the nominal output current (including the BonusPower®). The same situation applies when
starting a capacitive load.
The peak current capability also ensures the safe operation of subsequent circuit breakers of load circuits. The load
branches are often individually protected with circuit breakers or fuses. In case of a short or an overload in one branch
circuit, the fuse or circuit breaker need a certain amount of over-current to open in a timely manner. This avoids
voltage loss in adjacent circuits.
The extra current (peak current) is supplied by the power converter and the built-in large sized output capacitors of
the power supply. The capacitors get discharged during such an event, which causes a voltage dip on the output. The
following two examples show typical voltage dips:
Fig. 25-3 Peak load with 2x the nominal
current for 50ms, typ.
Fig. 25-4 Peak load with 5x the nominal
current for 5ms, typ.
10ms/DIV
Output
Voltage
Output
Current
48V
0A
40A 37.9V
1ms/DIV
Output
Voltage
Output
Current
48V
0A
100A 28.9V
40A Peak load (resistive) for 50ms
Output voltage dips from 48V to 37.9V. 100A Peak load (resistive) for 5ms
Output voltage dips from 48V to 28.9V.
Please note: The DC-OK relay triggers when the voltage dips more than 10% for longer than 1ms.
Peak current voltage dips typ. from 48V to 37.9V at 40A for 50ms, resistive load
typ. from 48V to 34.9V at 100A for 2ms, resistive load
typ. from 48V to 28.9V at 100A for 5ms, resistive load
25.3. EXTERNAL INPUT PROTECTION
The unit is tested and approved for branch circuits up to 30A (U.S.A.) and 32A (IEC). An external protection is only
required if the supplying branch has an ampacity greater than this. Check also local codes and local requirements. In
some countries local regulations might apply.
If an external fuse is necessary or utilized, minimum requirements need to be considered to avoid nuisance tripping of
the circuit breaker. A minimum value of 16A B- or C-Characteristic breaker should be chosen, when the unit is used at
AC100 and AC120V mains voltages (including AC 230V). If the unit is used only at AC 230V mains, a 10A B- or C-
Characteristic breaker is sufficient.
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
23/28
PULS DIMENSION
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
25.4. CHARGING OF BATTERIES
This power supply is not recommended to charge lead-acid or maintenance free batteries. The recommended end-of-
charge voltage of 55.0V (at 20°C) for four 12V VRLA lead-acid batteries in series can not be supplied from the QS40.481
unit.
25.5. OUTPUT CIRCUIT BREAKERS
Standard miniature circuit breakers (MCB’s or UL1077 circuit breakers) are commonly used for AC-supply systems and
may also be used on DC branches.
MCB’s are designed to protect wires and circuits. If the ampere value and the characteristics of the MCB are adapted to
the wire size that is used, the wiring is considered as thermally safe regardless of whether the MCB opens or not.
To avoid voltage dips and under-voltage situations in adjacent 48V branches which are supplied by the same source, a
fast (magnetic) tripping of the MCB is desired. A quick shutdown within 10ms is necessary corresponding roughly to
the ride-through time of PLC's. This requires power supplies with high current reserves and large output capacitors.
Furthermore, the impedance of the faulty branch must be sufficiently small in order for the current to actually flow.
The best current reserve in the power supply does not help if Ohm’s law does not permit current flow. The following
table has typical test results showing which B- and C-Characteristic MCBs magnetically trip depending on the wire cross
section and wire length.
Fig. 25-5 Test circuit Maximal wire length*) for a fast (magnetic) tripping:
0.75mm² 1.0mm² 1.5mm² 2.5mm²
C-2A 68m 89m >100m >100m
C-3A 53m 75m >100m >100m
C-4A 44m 57m 88m >100m
C-6A 18m 25m 38m 58m
C-8A 9m 12m 18m 24m
C-10A 8m 11m 16m 23m
C-13A 4m 5m 8m 12m
B-6A 39m 50m 74m >100m
B-10A 21m 29m 44m 68m
B-13A 13m 21m 34m 52m
B-16A 7m 9m 13m 17m
MCB
Power Supply
AC
DC
+
-
+
-
Load
Wire length
S1... Fault simulation switch
S1
B-20A 2m 3m 4m 5m
*) Don’t forget to consider twice the distance to the load (or cable length) when calculating the total wire length (+ and – wire).
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
24/28
IIIIIIIII
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
25.6. PARALLEL USE TO INCREASE OUTPUT POWER
Unit A
AC
DC
Unit B
AC
DC
-
+
-
+
Load
+
-
Power supplies from the same series (Q-Series) can be paralleled to increase
the output power. The output voltage shall be adjusted to the same value
(±100mV) in “Single use” mode with the same load conditions on all units, or
the units can be left with the factory settings. After the adjustments, the
jumper on the front of the unit shall be moved from “Single use” to “Parallel
use”, in order to achieve load sharing. The “Parallel use” mode regulates the
output voltage in such a manner that the voltage at no load is approx. 4%
higher than at nominal load. See also chapter 6. If no jumper is plugged in, the
unit is in “Single use” mode. Factory setting is also “Single use” mode.
If more than three units are connected in parallel, a fuse or circuit breaker with a rating of 30A or 32A is required on
each output. Alternatively, a diode or redundancy module can also be utilized.
Energize all units at the same time to avoid the overload HiccupPLUS mode. It also might be necessary to cycle the input
power (turn-off for at least five seconds), if the output was in HiccupPLUS mode due to overload or short circuits and the
required output current is higher than the current of one unit.
Keep an installation clearance of 15mm (left / right) between two power supplies and avoid installing the power
supplies on top of each other. Do not use power supplies in parallel in mounting orientations other than the standard
mounting orientation (terminals on the bottom of the unit) or in any other condition where a derating of the output
current is required (e.g. altitude, above 60°C, …).
Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple power supplies.
25.7. PARALLEL USE FOR REDUNDANCY
Power supplies can be paralleled for redundancy to gain higher system availability. Redundant systems require a
certain amount of extra power to support the load in case one power supply unit fails. The simplest way is to put two
power supplies in parallel. This is called a 1+1 redundancy. In case one power supply unit fails, the other one is
automatically able to support the load current without any interruption. Redundant systems for a higher power
demand are usually built in a N+1 method. E.g. five power supplies, each rated for 20A are paralleled to build a 80A
redundant system. For N+1 redundancy the same restrictions apply as for increasing the output power, see also
chapter 25.6.
Please note: This simple way to build a redundant system does not cover failures such as an internal short circuit in
the secondary side of the power supply. In such a case, the defective unit becomes a load for the other power supplies
and the output voltage can not be maintained any more. This can be avoided by utilizing redundancy modules, which
have decoupling devices (diodes or mosfets) included. Further information and wiring configurations can be found in
chapter 24.3.
Recommendations for building redundant power systems:
a) Use separate input fuses for each power supply. A separate source for each supply when possible increases the
reliability of the redundant system.
b) Set the power supply into “Parallel Use” mode.
c) Monitor the individual power supply units. Therefore, use the DC-OK relay contact of the QS40 power supply.
d) It is desirable to set the output voltages of all units to the same value (± 100mV) or leave it at the factory setting.
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
25/28
PULS DIMENSION 0-Series E \‘n QS40.481 48V, 20A, SINGLE PHASE INPUT
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
25.8. SERIES OPERATION
Unit A
AC
DC
Unit B
AC
DC
-
+
-
+
Load
+
-
Earth
(see notes)
Power supplies of the same type can be connected in series for higher
output voltages. It is possible to connect as many units in series as needed,
providing the sum of the output voltage does not exceed 150Vdc. Voltages
with a potential above 60Vdc are not SELV any more and can be dangerous.
Such voltages must be installed with a protection against touching.
Earthing of the output is required when the sum of the output voltage is
above 60Vdc.
Avoid return voltage (e.g. from a decelerating motor or battery) which is
applied to the output terminals.
Keep an installation clearance of 15mm (left / right) between two power supplies and avoid installing the power
supplies on top of each other. Do not use power supplies in series in mounting orientations other than the standard
mounting orientation (terminals on the bottom of the unit).
Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple power supplies.
25.9. INDUCTIVE AND CAPACITIVE LOADS
The unit is designed to supply any kind of loads, including capacitive and inductive loads. If extreme large capacitors,
such as EDLCs (electric double layer capacitors or “UltraCaps”) with a capacitance > 1F are connected to the output,
the unit might charge the capacitor in the HiccupPLUS mode (see chapter 6).
25.10. BACK-FEEDING LOADS
Loads such as decelerating motors and inductors can feed voltage back to the power supply. This feature is also called
return voltage immunity or resistance against Back- E.M.F. (Electro Magnetic Force).
This power supply is resistant and does not show malfunctioning when a load feeds back voltage to the power supply.
It does not matter whether the power supply is on or off.
The maximum allowed feed-back-voltage is 63Vdc. The absorbing energy can be calculated according to the built-in
large sized output capacitor which is specified in chapter 6.
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
26/28
IIIIIIIII
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
25.11. OPERATION ON TWO PHASES
240V +10% max.
L2
L1
L3
L
N
PE
Power Supply
AC
DC
internal
fuse
The power supply can also be used on two-phases of a three-phase-system.
Such a phase to phase connection is allowed as long as the supplying voltage
is below 240V+10%.
25.12. USE IN A TIGHTLY SEALED ENCLOSURE
When the power supply is installed in a tightly sealed enclosure, the temperature inside the enclosure will be higher
than outside. In such situations, the inside temperature defines the ambient temperature for the power supply.
The following measurement results can be used as a reference to estimate the temperature rise inside the enclosure.
The power supply is placed in the middle of the box, no other heat producing items are inside the box
Enclosure: Rittal Typ IP66 Box PK 9522 100, plastic, 254x180x165mm
Load: 48V, 16A; (=80%) load is placed outside the box
Input: 230Vac
Temperature inside enclosure: 65.6°C (in the middle of the right side of the power supply with a distance of 2cm)
Temperature outside enclosure: 24.1°C
Temperature rise: 41.5K
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
27/28
PULS DIMENSION l—V fl j dn Mod \_H_l E j V—I Jul, 2015 / Rev. 1,2 DS-QS40ABI-EN AH pavemetevs ave spedfied at 48V, 20A, Bevan, 25%: ambwem and any a 5 minmes run-m ‘ime unless otherwwse nmed www.pulspower.(om Phone ‘49 39 9173 0 Germany
QS40.481
Q-Series 48V, 20A, SINGLE PHASE INPUT
Jul. 2015 / Rev. 1.2 DS-QS40.481-EN
All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
25.13. MOUNTING ORIENTATIONS
Mounting orientations other than all terminals on the bottom require a reduction in continuous output power or a
limitation in the maximum allowed ambient temperature. The amount of reduction influences the lifetime expectancy
of the power supply. Therefore, two different derating curves for continuous operation can be found below:
Curve A1 Recommended output current.
Curve A2 Max allowed output current (results in approximately half the lifetime expectancy of A1).
Fig. 25-6
Mounting
Orientation A
(Standard
orientation)
Power
Supply
OUTPUTINPUT
Output Current
0
10 20 30 40 60°C
5
10
15
20A
50
A1
Ambient Temperature
Fig. 25-7
Mounting
Orientation B
(Upside down)
Power
Supply
OUTPUTINPUT
Output Current
0
10 20 30 40 60°C
5
10
15
20A
50
A2
Ambient Temperature
A1
Fig. 25-8
Mounting
Orientation C
(Table-top
mounting)
Output Current
0
10 20 30 40 60°C
5
10
15
20A
50
Ambient Temperature
A1
A2
Fig. 25-9
Mounting
Orientation D
(Horizontal cw)
Power
Supply
OUTPUTINPUT
Output Current
0
10 20 30 40 60°C
5
10
15
20A
50
Ambient Temperature
A1
A2
Fig. 25-10
Mounting
Orientation E
(Horizontal ccw)
Power
Supply
OUTPUTINPUT
Output Current
0
10 20 30 40 60°C
5
10
15
20A
50
Ambient Temperature
A1
A2
28/28

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