PSI-MOS-RS485W2-FO... Datasheet by Phoenix Contact

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© PHOENIX CONTACT 2010-01-08
101973_en_04
INTERFACE
PSI-MOS-RS485W2/FO…
Data sheet
1Description
PSI-MOS-RS485W2/FO… devices can be used to convert
RS-485 2-wire bus systems to fiber optics.
All bus systems with 10/11-bit UART data format and NRZ
data encoding are supported. This includes popular bus
systems such as:
Modbus ASCII/Modbus RTU
–SUCONET K
–S-BUS
DH-485
Various other company-specific bus systems
A transparent protocol is used to convert all common
transmission speeds up to a maximum of 500 kbps. The
integrated optical diagnostics enable fiber optic paths to be
monitored continuously during installation and even during
operation. The floating switch contact is activated when the
signal output on the fiber optic paths drops to a critical level.
This early alarm generation enables critical system states to
be diagnosed before they result in failure.
PSI-MOS-RS485W2/FO… E termination devices convert
an RS-485 interface to a fiber optic cable. They are ideal for
point-to-point connections.
PSI-MOS-RS485W2/FO… T fiber optic T-couplers convert
to two fiber optic cables.
Virtually any cascadable star and tree structures can be
created using integrated bit retiming, even in a redundant
version if required. In this case, the required devices are
snapped onto DIN rail connectors, which ensure that the
supply voltage and data signals are routed through.
Devices with different transmission technologies (polymer,
HCS, and glass fiber) can be freely combined within a star
coupler.
PSI-MOS-RS485W2/FO 660... devices are networked
using polymer fiber cable for distances up to 100 m and
HCS fiber cable for up to 800 m. They are connected via
F-SMA quick mounting connectors, which can be
assembled locally within a few minutes.
PSI-MOS-RS485W2/FO 850 ... devices are available for
longer paths and can be used for distances up to 2800 m
using HCS fiber cable and B-FOC (ST®) fast connection
technology and up to 4200 m using multi-mode glass fiber
cable.
The PSI-MOS system can be used with input voltages from
18 V DC to 32 V DC and in a temperature range from -20°C
to +60°C.
Fiber optic converter for RS-485 2-wire bus systems
If you have any technical problems, which you cannot resolve with the aid of this documentation, please contact
us during the usual office hours at:
Phone: +49 - 52 35 - 31 98 90
Fax: +49 - 52 35 - 33 09 99
E-mail: interface-service@phoenixcontact.com
Make sure you always use the latest documentation.
It can be downloaded at www.phoenixcontact.net/catalog.
This data sheet is valid for all products listed on the following page:
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 2
Table of contents
1 Description.................................................................................................................................. 1
2 Ordering data.............................................................................................................................. 3
3 Technical data ............................................................................................................................ 4
4 Safety regulations and installation notes..................................................................................... 7
4.1 Installation and operation ............................................................................................................................... 7
4.2 Installation in zone 2 ...................................................................................................................................... 7
5 Supported network structures..................................................................................................... 8
5.1 Point-to-point connections.............................................................................................................................. 8
5.2 Linear structures............................................................................................................................................. 8
5.3 Star structures................................................................................................................................................ 8
5.4 Tree structures ............................................................................................................................................... 9
6 Function elements ...................................................................................................................... 9
7 Definition of fiber optic diagnostics ............................................................................................10
8 Configuration .............................................................................................................................11
8.1 Setting the transmission speed .................................................................................................................... 11
8.2 10/11-bit selection (DIP 5) ............................................................................................................................ 11
8.3 Connection to fiber optic interfaces from third-party suppliers (DIP 6/7)....................................................... 12
8.4 Activating the redundancy function (DIP 8)................................................................................................... 12
8.5 Disabling the second fiber optic port (DIP 9) ................................................................................................ 12
8.6 Switch with no function (DIP 10)................................................................................................................... 12
8.7 Mixed operation of PSI-MOS and PSM-EG.................................................................................................. 12
9 Connection notes ......................................................................................................................13
9.1 Combined assembly with a system power supply unit (modular star coupler).............................................. 13
9.2 Assembly as an individual device in the control cabinet (stand-alone) ......................................................... 14
9.3 Assembly in potentially explosive areas ....................................................................................................... 14
9.4 Removal ....................................................................................................................................................... 14
10 Cabling notes.............................................................................................................................15
10.1 Connecting the supply voltage ..................................................................................................................... 15
10.2 Connecting the data cables/bus termination................................................................................................. 15
10.3 Wiring the switch contact.............................................................................................................................. 16
10.4 Connecting the fiber optic cables ................................................................................................................. 17
11 Signal delay ...............................................................................................................................18
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 3
2Ordering data
Other fiber optic converters in the PSI-MOS system
The PSI-MOS-RS485W2/FO 1300 E is networked for
distances up to 25 km using multi-mode glass fiber cable
and up to 45 km using single mode glass fiber cable.
Fiber optic converters
Description Type Order No. Pcs./Pkt.
Termination device with one fiber optic interface
Fiber optic converter with integrated optical diagnostics, alarm contact, for
RS-485 2-wire bus systems (SUCONET K, Modbus, etc.) up to 500 kbps,
NRZ encoding
660 nm, for polymer/HCS fiber cable, F-SMA
850 nm, for HCS/glass fiber cable, B-FOC (ST®)
PSI-MOS-RS485W2/FO 660 E
PSI-MOS-RS485W2/FO 850 E
2708313
2708339
1
1
T-coupler with two fiber optic interfaces
Fiber optic converter with integrated optical diagnostics, alarm contact, for
RS-485 2-wire bus systems (SUCONET K, Modbus, etc.) up to 500 kbps,
NRZ encoding
660 nm, for polymer/HCS fiber cable, F-SMA
850 nm, for HCS/glass fiber cable, B-FOC (ST®)
PSI-MOS-RS485W2/FO 660 T
PSI-MOS-RS485W2/FO 850 T
2708300
2708326
1
1
Accessories
Description Type Order No. Pcs./Pkt.
System power supply unit for supplying a modular star coupler topology MINI-SYS-PS 100-240AC/24DC/1.5 2866983 1
System power supply unit for supplying a modular star coupler topology, for
potentially explosive areas
MINI-PS-100-240AC/24DC/1.5/EX 2866653 1
End clamps CLIPFIX 35 3022218 50
DIN rail connector, power supply and data (2 per device) ME 17,5 TBUS1,5/5-ST-3,81GN 2709561 10
DIN rail connector, power supply only (2 per device) ME 17,5 TBUS1,5/PP000-3,81BK 2890014 10
Polymer fiber connectors (4 connectors in the set) PSM-SET-FSMA/4-KT 2799720 1
Polishing set for polymer fiber connectors
(required to assemble polymer fiber connectors)
PSM-SET-FSMA-POLISH 2799348 1
Fiber optic polymer fiber cable for indoor installation PSM-LWL-KDHEAVY 2744319 1
F-SMA HCS fiber connectors (4 connectors in the set) PSM-SET-FSMA/4-HCS 2799487 1
B-FOC (ST®) HCS fiber connectors (4 connectors in the set) PSM-SET-B-FOC/4-HCS 2708481 1
Tool set for HCS connectors (F-SMA)
(required for HCS connector assembly)
PSM-HCS-KONFTOOL 2799526 1
Tool set for HCS connectors (B-FOC (ST®))
(required for HCS connector assembly)
PSM-HCS-KONFTOOL/B-FOC 2708465 1
Fiber optic HCS cable for indoor installation PSM-LWL-HCS RUGGED-200/230 2799885 1
Fiber optic HCS cable for outdoor installation PSM-LWL-HCSO-200/230 2799445 1
Fiber optic glass fiber cable for indoor installation PSM-LWL-GDM-RUGGED-50/125 2799322 1
Fiber optic glass fiber cable for outdoor installation PSM-LWL-GDO-50/125 2799432 1
Measuring device for fiber optic power measurement PSM-FO-POWERMETER 2799539 1
Other fiber optic converters
Description Type Order No. Pcs./Pkt.
Fiber optic converter with integrated optical diagnostics, alarm contact, for
RS-485 2-wire bus systems (SUCONET K, Modbus, etc.) up to 500 kbps,
NRZ encoding, termination device with one fiber optic interface (SC duplex),
1300 nm, for glass fiber cable
PSI-MOS-RS485W2/FO 1300 E 2708562 1
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 4
3 Technical data
Interfaces
Power supply 24 V DC (18 V DC ... 32 V DC)
Nominal current consumption 130 mA, maximum
Ready-to-operate indicator "VCC" LED (green)
Maximum star coupler expansion 10
Serial RS-485 interface RS-485, 2-wire, automatic control
Operating mode Half duplex
Bus termination resistor 220 Ω (can be connected to 390 Ω pull-up/pull-down)
Data format/encoding UART (10/11-bit selection, NRZ)
Data direction changeover Automatic control
Transmission speed (set via DIP switches) 4.8/9.6/19.2/38.4/57.6/75/93.75/115.2/136/187.5/375/500 kbps
Transmission length Up to 1200 m, maximum depending on the transmission speed,
with shielded, twisted pair data cable
Connection COMBICON plug-in screw terminal block
Optical interface
Transmission protocol Transparent protocol to RS-485 interface
Connection method F-SMA B-FOC (ST®)
Wavelength 660 nm 850 nm
Minimum transmission power (fiber type) -5.3 dBm (980/1000 μm)
-16.0 dBm (200/230 μm)
-4.0 dBm (200/230 μm)
-17.6 dBm (50/125 μm)
-14.6 dBm (62.5/125 μm)
Receiver sensitivity
Minimum
Maximum
-30.1 dBm
-3.0 dBm (980/1000 μm)
-32.5 dBm (50/125 μm/62.5/125 μm)
-32.1 dBm (200/230 μm)
-3.0 dBm (200/230 μm)
Minimum transmission length including 3 dB system reserve 100 m with F-P 980/1000; 230 dB/km
800 m with F-K 200/230; 10 dB/km
with quick mounting connectors
4200 m with F-G 50/125; 2.5 dB/km
4200 m with F-G 62.5/125; 3.0 dB/km
2800 m with F-K 200/230; 8.0 dB/km
Minimum transmission length 1 m with F-K 200/230; 8.0 dB/km
General data
Bit distortion input ±35%, maximum
Bit distortion output < 6.25%
Bit delay < 1 bit
Electrical isolation RS-485//power supply
Test voltage 1.5 kVrms, 50 Hz, 1 min.
Alarm output 60 V DC/42 V AC, 1 A, maximum
Status and diagnostic indicators Power supply (VCC), transmit/receive data RS-485,
fiber optic bar graph (FO SIGNAL), fiber optic error (FO ERR)
Housing material PA V0, green
Ambient temperature
Operation
Storage/transport
-20°C ... +60°C
-40°C ... +85°C
Humidity 30% ... 95%, no condensation
Dimensions (W x H x D) 35 mm x 99 mm x 105 mm
Degree of protection IP20
Weight 190 g, approximately
MTBF according to Telcordia standard
Ambient temperature 25°C
Ambient temperature 40°C
Termination devices (E) T-couplers (T)
660 nm
358 years
73 years
850 nm
272 years
44 years
660 nm
220 years
44 years
850 nm
159 years
24 years
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 5
Chloroform test Free from substances that would hinder coating with paint or varnish
(according to VW/Audi/Seat specification)
Vibration resistance 5g according to IEC 60068-2-6, 2.5 h each in x, y, and z direction, criterion A
Shock resistance 15g according to IEC 60068-2-27 with 11 ms pulse length, criterion C
Free fall 1 m without packaging according to IEC 60950
Air and creepage distances DIN EN 60664-1/VDE 0110-1, DIN EN 50178, DIN EN 60950
General data (continued)
Tests/approvals
CE c
UL/CUL 1604 Ex listed U
u
PROCESS CONTROL EQUIPMENT FOR HAZARDOUS
LOCATIONS
31ZN
Ex
Fiber optic interface
Device
X II (2) GD [EX op is] IIC (PTB 06 ATEX 2042 u)
X II 3G Ex nAC IIC T4 X
Conformance with EMC Directive 2004/108/EC and Low Voltage Directive 2006/95/EC
Noise immunity test according to EN 61000-6-21
Electrostatic discharge (ESD)
Air discharge
Contact discharge
EN 61000-4-2 Criterion B2
8 kV
6 kV
Electromagnetic HF field
Amplitude modulation
EN 61000-4-3 Criterion A3
10 V/m
Fast transients (burst)
Signal
Power supply
EN 61000-4-4 Criterion B2
2 kV/5 kHz
2 kV/5 kHz
Surge current load (surge)
Signal
Power supply
EN 61000-4-5 Criterion B2
1 kV/42 Ω
0.5 kV/2 Ω
Conducted interference EN 61000-4-6 Criterion A310 V
Noise emission test according to EN 61000-6-4
Noise emission of housing EN 550114Class A5
1EN 61000 corresponds to IEC 61000
2Criterion B: Temporary adverse effects on the operating behavior, which the device corrects automatically.
3Criterion A: Normal operating behavior within the specified limits.
4EN 55011 corresponds to CISPR11
5Class A: Industrial application, without special installation measures.
silk m D?“ 3 i i l: i %>¢.:= ERRE Figure 1 Biock diagram Housing dimensions Figure 2 Housing dimensions (in mm) 1D197Lenjfl PHOENIX CONTACT 6
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 6
Block diagram
Figure 1 Block diagram
Housing dimensions
Figure 2 Housing dimensions (in mm)
ERR B
ERR A
(1)
(2)
24V
0V
11 (3)
12 (4)
CTRL
390 220 390
DC
DC
D(A) (8)
D(B) (7)
GND (6)
PE (5)
24 V 0V GND Data
A
Data
B
gn
rd
rd
ye
gn
Line Diagnostics Port A
Line Diagnostics Port B
Bus Management
FO Port A
FO Port B*)
DIN Rail Connector *) only for PSI-MOS-RS485 W2/FO...T
Retiming
Retiming
Retiming
Alarm
COMBICON
Function/
Data Rate
TD
RD
TD
RD
FO Line
FO Line
SHD
*) Only for PSI-MOS-RS485W2/FO...T
101973A010
105 35
99
PSI-MOS-RS485W2/FO 660T
Ord. No. 27 08 300
VCC
TD
RD
ERR
A
ERR
B
FO
SIGNAL
RS485
TERM.
ON
A A ®®
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 7
4 Safety regulations and installation notes
4.1 Installation and operation
Follow the installation instructions.
When installing and operating the device, the applicable
safety directives (including national safety directives),
accident prevention regulations, as well as general
technical regulations, must be observed.
Do not repair the device yourself, replace it with an
equivalent device. Repairs may only be carried out by the
manufacturer.
For the safety data, please refer to the operating instructions
and certificates (EC-type examination certificate, other
approvals, if necessary).
4.2 Installation in zone 2
Observe the specified conditions for use in potentially
explosive areas.
Installation in areas with a danger of dust explosions
NOTE: Installation, operation, and maintenance
may only be carried out by qualified specialist
personnel.
NOTE: The device must not be opened or
modified apart from the configuration of the DIP
switches.
NOTE: The switches that can be accessed may
only be actuated when the power supply to the
device is disconnected.
NOTE: The IP20 degree of protection
(IEC 60529/EN 60529) of the device is intended
for use in a clean and dry environment. The
device must not be subject to mechanical strain
and/or thermal loads, which exceed the limits
described.
WARNING: Explosion hazard
The device is designed for installation in zone 2
potentially explosive areas.
WARNING: Explosion hazard
Install the device in suitable housing with IP54
protection, minimum, that meets the
requirements of EN 60079-15.
Observe the requirements of EN 60079-14.
WARNING: Explosion hazard
Disconnect the block power supply before:
Snapping it on or disconnecting it.
Connecting or disconnecting cables.
WARNING: Explosion hazard
Only devices which are designed for operation in
zone 2 potentially explosive areas and are
suitable for the conditions at the installation
location may be connected to the supply and
signal circuits in zone 2.
WARNING: Explosion hazard
The device must be stopped and immediately
removed from the Ex area if it is damaged or was
subject to an impermissible load or stored
incorrectly or if it malfunctions.
WARNING: Explosion hazard
The device is not designed for installation in
areas with a danger of dust explosions.
If dust is present, install the device in suitable,
approved housing.
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 8
5 Supported network structures
The PSI-MOS-RS485W2/FO… system can be used to
create network topologies that are ideally adapted to the
relevant application. The structures are described briefly
below.
5.1 Point-to-point connections
Two PSI-MOS-RS485W2/FO… E fiber optic termination
devices can be used to easily convert a data link from
copper cable to fiber optics.
If necessary, the point-to-point connection can also be
designed redundantly to increase availability using
PSI-MOS-RS485W2/FO…T T-couplers.
5.2 Linear structures
PSI-MOS-RS485W2/FO… devices can be used to
network several RS-485 devices to form a linear structure.
PSI-MOS-RS485W2/FO E termination devices are used
at the beginning and end of the fiber optic line.
PSI-MOS-RS485W2/FO… T T-couplers with two fiber
optic ports are used along the line.
5.3 Star structures
RS-485 devices can also be networked in a star structure.
Depending on the number of star lines required, several
T-couplers or termination devices are connected to an
active star coupler.
Up to ten PSI-MOS-RS485W2/FO… devices can be
connected to each star coupler. Cross-wiring for RS-485
data and for the supply voltage is provided automatically by
the DIN rail connector (installation accessory, see page 3).
If increased availability is required, redundant star
distributors can also be created using
PSI-MOS-RS485W2/FO…T T-couplers.
E
E
T
T
FO
Max. 31 Max. 31
Max. 31 Max. 31
E
T
T
Linear structure
FO
FO
FO
Max. 31
Max. 31
Max. 31
TTT
TTT
...
max. 31
max. 31 max. 31 max. 31
FO
Point-to-point connection Redundant point-to-point
connection
Star structure Redundant star structure
7% fixfig /1T\/lI\/fl\/1T\
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 9
6 Function elements
Figure 3 Function elements
124 V DC supply voltage connection
20 V DC supply voltage connection
3Switch contact, connection 11
4Switch contact, connection 12
5SHD, shield
6GND, ground
7D (B), transmit/receive positive
8D (A), transmit/receive negative
9"VCC" LED
10 "TD" LED
11 "RD" LED
12 Bus termination ON/OFF
13 "FO SIGNAL" LED (port A)
14 "FO SIGNAL" LED (port A)
15 "FO SIGNAL" LED (port A)
16 "ERR" LED (port A)
17 Fiber optic transmitter (port A)
18 Fiber optic receiver (port A)
19 "FO SIGNAL" LED (port B)1
20 "FO SIGNAL" LED (port B)1
21 "FO SIGNAL" LED (port B)1
22 "ERR" LED (port B)1
23 Fiber optic transmitter (port B)1
24 Fiber optic receiver (port B)1
Diagnostic and status indicators
5.4 Tree structures
Linear and star structures can be cascaded to create
complex tree structures, even in a redundant version if
required.
The number of devices that can be cascaded is only limited
by the timing response (timeout) of the bus system used
due to the bit retiming of the PSI-MOS-RS485W2/FO…
fiber optic converter.
TT
TTTT TT TT
...
... ... ... ...
max. 31 max. 31 max. 31 max. 31
max. 31
FO
FO
Tree structure
101973A011
12 34
PSI-MOS-RS485W2/FO 660T
Ord. No. 27 08 300
VCC
TD
RD
ERR
A
ERR
B
FO
SIGNAL
RS485
TERM.
ON
5678
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1Only for PSI-MOS-RS485W2/FO… T
Des. Color Meaning
VCC Green Ready-to-operate
TD Yellow Sending data at the RS-485 copper
interface
RD Green Receiving data at the RS-485
copper interface
FO SIGNAL
Green Receiving power
at fiber optic port
A/B (see
page 10)
Very good
Green Good
Yellow Critical
ERR Red Insufficient,
broken fiber
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 10
7 Definition of fiber optic diagnostics
The quality of the path is determined using the incoming
optical power Popt and displayed using the LED bar graph.
DIP 7 = "OFF" is used to switch the transmitters in the idle
state (rest period between transmitting data) to steady light
(INVERS), to enable continuous fiber optic diagnostics.
As soon as the system reserve is reached, only the yellow
LED remains lit. At the same time, the signaling relay drops
and the switch contact opens. Data communication is still
possible.
In "Redundant ring" mode, the affected fiber optic port is
already switched off when the LED goes to yellow.
Echo evaluation
If DIP 7 is set to "ON" (NORM), the echo evaluation
(DIP 6 = "OFF") is available as diagnostics (see "Connection
to fiber optic interfaces from third-party suppliers (DIP 6/7)"
on page 12).
Echo evaluation is used to detect broken fibers for the
devices. During the idle phase (rest period between
transmitting data), the fiber optics between directly
connected devices are monitored for broken fibers.
In the event of a broken fiber, the affected optical fiber is
switched off, the error LED is set (16 in Figure 3 on page 9),
and the switching output is activated.
If the default setting for DIP 7 = "OFF" (INVERS) is used,
echo evaluation is switched off because the built-in
diagnostics (FO signal) permanently evaluates the received
signal and therefore also detects a broken fiber.
If echo evaluation is also switched off (DIP 6 = "ON"), fiber
optic diagnostics are not available.
Basic method of operation
The PSI-MOS device has a maximum of four interfaces for
the RS-485 signal: the electrical interface (COMBICON),
the two fiber optic ports (port B only for T-couplers), and the
DIN rail connector.
All interfaces communicate with one another with equal
rights. A signal available at one of the interfaces is also
available at all other interfaces.
Figure 4 Communication between the interfaces
LED bar
graph
Receive
status
Optical power Popt
Green
Green
Yellow
Very good Popt is considerably greater
than the system reserve
Green
Yellow Good Popt is still greater than the
system reserve
Yellow Critical Popt has reached the system
reserve
Red Error Popt has sapped the system
reserve/broken fiber
DIP 6 DIP 7 Meaning
Not
relevant
OFF
("INVERS")
Continuous fiber optic diagnostics,
broken fiber detection disabled
OFF ON
(NORM)
Continuous fiber optic diagnostics,
broken fiber detection active
ON
(MIXED)
ON
(NORM)
Continuous fiber optic diagnostics
and broken fiber detection disabled.
Diagnostics are no longer available.
101972B012
1
0
1
0
0
1
0
0
1
1
1
0
1
0
1
0
0
1
0
0
1
1
1
0
1
0
1
0
0
1
0
0
1
1
1
0
1
0
1
0
0
1
0
0
1
1
1
0
01011000110100100110
010110001 00100110
T-BUS
Fiber optic
Fiber optic
COMBICON
AKA
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 11
8 Configuration
For configuration, release the housing cover using a
screwdriver (A in Figure 5).
Then carefully pull the PCB out of the housing as far as
possible (B).
Figure 5 Opening the housing
DIP switches 1 to 10 are then freely accessible.
Configure the DIP switches according to the planned
application.
Figure 6 Setting the DIP switches
The following tables provide an overview of the DIP switch
functions. By default upon delivery, all DIP switches are in
the "OFF" position.
8.1 Setting the transmission speed
The transmission speed is set using DIP switches 1 to 4.
8.2 10/11-bit selection (DIP 5)
The standard word length of a UART character is 11 bits.
However, some bus systems, e.g., Modbus in ASCII mode,
transmit 10-bit word lengths.
NOTE: Electrostatic discharge
The device contains components that can be
damaged or destroyed by electrostatic discharge.
When handling the device, observe the
necessary safety precautions against
electrostatic discharge (ESD) according to
EN 61340-5-1.
A
B
A
101973A001
101973A002
S1...S10
ON
DIP
12345678910
NOTE: After changing the device settings,
disconnect the power to the device so that the
settings can be applied.
NOTE: Set all fiber optic converters and all
connected RS-485 devices to the same
transmission speed.
Transmission
speed
DIP switch
1 2 3 4
500 kbps OFF OFF OFF OFF
375 kbps OFF OFF OFF ON
187.5 kbps OFF OFF ON OFF
136 kbps OFF OFF ON ON
115.2 kbps OFF ON OFF OFF
93.75 kbps OFF ON OFF ON
75 kbps OFF ON ON OFF
57.6 kbps OFF ON ON ON
38.4 kbps ON OFF OFF OFF
19.2 kbps ON OFF OFF ON
9.6 kbps ON OFF ON OFF
4.8 kbps ON OFF ON ON
DIP switch ON OFF
510 BIT 11 BIT
6MIXED –
7NORM INVERS
81
1No function for PSI-MOS-RS485W2/FO… E termination devices.
REDUNDANCY –
92
2Not available for PSI-MOS-RS485W2/FO… E termination devices.
END NEXT
102N.C.
Please always observe the UART character word
length specified by the control system
manufacturer.
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 12
Set DIP switch 5 to "ON" ("10 BIT") (default setting:
"OFF").
If operating Modbus in RTU mode, leave DIP switch 5 set to
"OFF" ("11 BIT").
When used with the Inline multiplexer system, select a word
length of 11 bits and 75 kbps.
8.3 Connection to fiber optic interfaces from third-
party suppliers (DIP 6/7)
During the idle phase, fiber optic interfaces return to an idle
setting defined by the manufacturer. This idle setting may
vary for different manufacturers and devices. As fiber optic
interfaces can only be operated together if they have the
same idle setting, this should be set using the DIP switches.
For mixed operation of PSI-MOS with fiber optic interfaces
from other manufacturers, proceed as follows.
Deactivate echo evaluation.
Set DIP 6 to "ON".
Check the idle setting for the third-party interface:
Logic 1 = Light off
Logic 1 = Light on
If necessary, adjust the idle setting of PSI-MOS using
DIP 7.
8.4 Activating the redundancy function (DIP 8)
For increased availability, redundant fiber optic connections
can be created using T-couplers. In this case, the
redundancy function must be activated at the start and end
of the redundant fiber optic connection.
To do this, set DIP switch 8 (REDUNDANCY) to "ON".
When the redundancy function is enabled, data
communication takes place via fiber optic port A by default.
In the event that the signal level of the standard cable drops
to a critical level, it automatically switches to port B.
8.5 Disabling the second fiber optic port (DIP 9)
If the second fiber optic port (B) is not used for
PSI-MOS-RS485W2/FO… T T-couplers, it must be
disabled. Otherwise the red "ERR" LED will light up.
Set DIP 9 to "ON" (END).
8.6 Switch with no function (DIP 10)
This switch has no function at present and is reserved for
later function extensions.
8.7 Mixed operation of PSI-MOS and PSM-EG
Mixed operation of the old PSM-EG series with the new
PSI-MOS series is generally possible. Please note the
following settings and restrictions:
Device configuration
The DIP switch settings depend on the application
requirements. Please note that the idle setting of all devices
used in the entire system must be the same (can be set via
DIP switches) and that the data rate set on all devices is the
same.
Overload/underload capability of fiber optic interfaces
In rare cases (usually in the case of very short fiber optic
connections of just a few meters), an overload of the
PSI-MOS devices may occur in mixed operation. This is due
to the highly sensitive PSI-MOS receivers, which cover
large ranges but can be overloaded on short fiber optic
paths.
In the event of an overload, a patch cable with fiber optic
joint can be used to increase the attenuation of the path,
which will ensure error-free operation.
In mixed operation, observe the following ranges:
DIP 7 Idle setting Meaning
OFF = INVERS Light on1
1Default setting
Logic 1
ON = NORM Light off Logic 1
NOTE: If DIP 7 is set to "ON", fiber optic
diagnostics are not available via the LED bar
graph.
The LED bar graph can light up at high
transmission speeds or flash at low transmission
speeds. This display does not correspond to
continuous evaluation of the optical power.
NOTE: When connecting third-party devices,
observe the receiver sensitivity and overrange of
the fiber optic interfaces.
NOTE: Always connect redundant fiber optic
connections from fiber optic port A to port A of the
opposite device or from port B to port B of the
opposite device.
Fiber Wavelength Maximum range
Glass 50/125 850 nm 1600 m
Glass 62.5/125 850 nm 2200 m
HCS Not permissible for PSM-EG
POF 660 nm 70 m
AA
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 13
9 Connection notes
Install the device on a 35 mm DIN rail according to
DINEN60715.
To avoid contact resistance only use clean, corrosion-
free DIN rails.
End clamps can be mounted on both sides of the device
to stop the devices from slipping on the DIN rail (for
ordering data, see page 3).
9.1 Combined assembly with a system power
supply unit (modular star coupler)
Connect together the required number of DIN rail
connectors for the connection station. Two DIN rail
connectors are required for each device (see A in
Figure 7). A maximum of ten devices are permitted in a
connection station.
Push the connected DIN rail connectors onto the DIN
rail (B and C).
Place the device onto the DIN rail from above. The
upper holding keyway of the device must be hooked
onto the top edge of the DIN rail (see Figure 7). Make
sure that it is aligned correctly with the DIN rail
connectors.
Once the device has been snapped on properly, check
that it is fixed securely on the DIN rail.
Figure 7 Combined assembly
WARNING: Only mount and remove devices
when the power supply is disconnected.
WARNING: PSI-MOS-... devices are designed
for SELV operation according to
IEC 60950/EN 60950/VDE 0805.
WARNING: Connect the DIN rail to protective
earth ground using a grounding terminal block.
The devices are grounded when they are
snapped onto the DIN rail (installation according
to PELV).
This ensures that the shielding is effective.
Connect protective earth ground with low
impedance.
A
BC
101973A003
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 14
9.2 Assembly as an individual device in the control
cabinet (stand-alone)
Place the device onto the DIN rail from above. The
upper holding keyway of the device must be hooked
onto the top edge of the DIN rail (see Figure 8).
Push the device from the front towards the mounting
surface.
Once the device has been snapped on properly, check
that it is fixed securely on the DIN rail.
Figure 8 Assembly in the control cabinet
9.3 Assembly in potentially explosive areas
Areas with a danger of gas explosions
The devices are suitable for use in zone 2. Devices that
are installed in zone 1 cannot be connected to the fiber
optic interface. The fiber optic interface is an associated
item of equipment with protection type "Ex op is".
Areas with a danger of dust explosions
The device is not designed for installation in areas with
a danger of dust explosions.
If dust is present, install the device in suitable, approved
housing.
When installed outside areas with a danger of dust
explosions, devices installed in zone 22 or 21 can also
be connected to the fiber optic interface.
9.4 Removal
Pull the locking latch down using a screwdriver, needle-
nose pliers or similar.
Pull the bottom edge of the module away from the
mounting surface.
Pull the module diagonally upwards away from the DIN
rail.
If removing a complete star distributor, remove the DIN
rail connectors from the DIN rail as well.
101973A004
WARNING: Observe the safety notes on page 7.
101973A013
Zone 1 Zone 2
FO
FO FO
Ex op is
XII 2G
[Ex op is]
XII (2)G
Ex op is
XII 2D
Ex op is
XII 3D
[Ex op is]
II (2)DX
Zone 21 Zone 22 Dust-safe area
FO
[Ex op is]
II (2)GX
Gas-safe area
PSI-MOS-RS485W2/FO660T
Ord.No. 27 08 300
VCC
TD
RD
ERR
A
ERR
B
FO
SIGNAL
RS485
TERM.
ON
PSI-MOS-RS485W2/FO660T
Ord.No. 27 08 300
VCC
TD
RD
ERR
A
ERR
B
FO
SIGNAL
RS485
TERM.
ON
PSI-MOS-RS485W2/FO660T
Ord.No. 27 08 300
VCC
TD
RD
ERR
A
ERR
B
FO
SIGNAL
RS485
TERM.
ON
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 15
10 Cabling notes
10.1 Connecting the supply voltage
Figure 9 Individual/redundant supply
Operation as an individual device
Supply the supply voltage to the module via terminal
blocks 1 (24 V) and 2 (0 V).
Operation in a star coupler topology
When the devices are operated in a star coupler topology,
the supply voltage must only be supplied to the first device
in the station. The remaining devices are supplied via the
DIN rail connector. A redundant supply concept can be
created by connecting a second power supply unit to
another device in the topology.
Using the MINI POWER system power supply unit
As an alternative, the star coupler topology can also be
supplied using the
MINI-SYS-PS 100-240AC/24DC/1.5 (Order No. 2866983)
or MINI-PS-100-240AC/24DC/1.5/EX (Order No. 2866653)
system power supply unit. It is connected via two DIN rail
connectors.
Usually the system power supply unit is mounted as the first
device in a topology. A second power supply unit can be
used to create a redundant supply concept.
10.2 Connecting the data cables/bus termination
Figure 10 Connecting the data cables
Connect the data cables and the data cable shield to
the corresponding contacts on the COMBICON
connector. For optimum shield connection use the
terminal clamp provided.
If the fiber optic converter is located at the start or end
of an electrical RS-485 segment, activate termination
on the top of the device (12 in Figure 3 on page 9).
WARNING: The device is operated with a +24 V
DC SELV.
24 V 0V 24 V 0V 24 V 0V
102964A006
Redundant
supply
Individual
supply
NOTE: Use shielded twisted pair data cables.
Connect the cable shielding at both ends of the
transmission path.
NOTE: The maximum length of the RS-485
cables depends on the transmission speed. The
values listed in the table must not be exceeded.
Transmission speed
[kbps]
Maximum range [m]
93.75 1200
500 400
GND D(B) D(A)
101973A005
SHD
42 «a @2 [2 g w; @9@ @@ km Q @flfez ma l/d pd {41.1 I ‘ L, if ”,i\: x,” ,3» \i," E' ;:, “L , :,
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 16
10.3 Wiring the switch contact
PSI-MOS-RS485W2/FO… converters are equipped with a
floating switch contact for error diagnostics (connection
terminal blocks 3 and 4 in Figure 3 on page 9). This contact
opens on the affected device if:
The supply voltage fails
An interrupt is detected on the fiber optic path
The system reserve for the fiber optic path is not
reached
The switch contact is an N/C contact and can be connected
to a local digital input, e.g., on the PLC, to support error
detection.
When using a device topology (modular star coupler), the
individual contacts can be connected to separate input
points or the individual contacts can be looped to generate
a group message (Figure 11).
Figure 11 Individual and group message
NOTE: The maximum load capacity of the relay
contact is 60 V DC/42 V AC, 1 A.
101973A006
24 V DC
Individual message
24 V DC
Group message
G 999
PSI-MOS-RS485W2/FO…
101973_en_04 PHOENIX CONTACT 17
10.4 Connecting the fiber optic cables
F-SMA connection (PSI-MOS-RS485W2/FO 660 ...)
PSI-MOS-RS485W2/FO 660 ... devices use F-SMA
connectors for the fiber optic connection. F-SMA is a
standardized fiber optic connection.
Figure 12 F-SMA connection
The connectors are secured on the device by manually
tightening the screw collar (see 2 in Figure 12).
B-FOC (ST®) connection
(PSI-MOS-RS485W2/FO 850 ...)
Standardized B-FOC (ST®) connectors are used with
PSI-MOS-RS485W2/FO 850 ... devices.
Figure 13 B-FOC connection
Connect the fiber optic cable to the B-FOC (ST®)
connector for the transmit and receive channel and
push the connector clamp mechanism downwards.
Secure the connection with a quarter turn to the right
(see 2 in Figure 13).
Measuring and connecting devices
Due to the integrated optical diagnostics, there is no need to
measure the path.
Figure 14 Crossed cables
WARNING: Risk of eye injury
During operation, do not look directly into
transmitter diodes or use visual aids to look into
the glass fibers.
The infrared light is not visible.
NOTE: Dust protection caps should only be
removed just before the connectors are
connected. They prevent contamination of the
transmit and receive elements.
The same applies for the protective caps on the
connectors.
NOTE: The following fiber optic lengths must
not be exceeded:
PSI-MOS-RS485W2/FO 660 ...
100 m with F-P 980/1000; 230 dB/km
800 m with F-K 200/230; 10 dB/km
PSI-MOS-RS485W2/FO 850 ...
2800 m with F-K 200/230; 8 dB/km
4200 m with F-G 50/125; 2.5 dB/km
4200 m with F-G 62.5/125; 3.0 dB/km
NOTE: When using fiber optics, observe the fiber
optic installation guidelines,
DB GB IBS SYS FOC ASSEMBLY
(Order No. 9393909).
1
2
NOTE: Note the fiber optic cable signal direction
when coupling two PSI-MOS devices:
Device 1 fiber connection "TD" (transmitter) to
device 2 fiber connection "RD" (receiver)
(Figure 14).
NOTE: Due to different operating wavelengths,
PSI-MOS-RS485W2/FO 660 ...,
PSI-MOS-RS485W2/FO 850 ..., and
PSI-MOS-RS485W2/FO 1300 E
devices should not be connected directly with one
another via fiber optic cables.
1
2
101973A009
PSI-MOS-RS485W2/FO…
101973_en_04 18
PHOENIX CONTACT GmbH & Co. KG • 32823 Blomberg • Germany • Phone: +49 - 52 35 - 30 0
PHOENIX CONTACT • P.O.Box 4100 • Harrisburg • PA 17111-0100 • USA • Phone: +717-944-1300
www.phoenixcontact.com
11 Signal delay
Data transmission cables and network components lead to
signal delays. This may also have to be taken into
consideration when setting the timeout of the bus system
used.
The signal delay dT can be calculated as follows:
dT = b x L + 2 x N
Where:
If necessary, adjust the timeout of your bus system to the
signal delay.
dT = Signal delay in bit periods for one complete signal
cycle
b = Length parameter (see table)
L = Network expansion in km
N = Number of fiber optic converters
Transmission speed
[kbps]
Length parameter b
500 5.00
300 3.00
187.5 1.88
136 1.36
115.2 1.16
93.75 0.94
75 0.75
57.6 0.58
38.4 0.38
19.2 0.19
9.6 0.10
4.8 0.05

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