PSM-ME-RS485/RS485-P Repeater
RS485 to RS485 Repeater
- Amplify RS485 signals up to 1.2km [4000 feet]
- Add 32 nodes to an RS-485 data circuit
- Transmission speeds up to 1.5 Mbps
- 3-way isolation between all interfaces
Boost, or amplify, RS-485 signals to cover longer distances with the PSM-ME-RS485 Repeater. By using differential voltage lines for data and control signals RS-485 repeaters overcome the limitations of standard serial ports. This allows you to add 4,000 feet (1.2 km) and 32 nodes to an RS-485 data circuit. In addition, 3-way isolation protects devices from transient surges and ground loops on the data line.
The PSM-ME-RS485 repeater was developed for the high requirements of fieldbus systems. The device can be powered by wall-mount AC or snapped onto standard DIN rails and supplied with 24 V DC or AC.
The PSM-ME-RS485 repeater can be used in all common 2-wire bus systems: Modbus, RACKBUS (Endress &Hauser), SUBCONET-K (Moeller), UNI-TELWAY (Telemecanique), DANBUS (Danfoss), RS-BUS (Landis & Staefa), NET 2000 (B&R), INSUM (ABB), J-BUS (Merlin Gerin), ET-WAY (Jetter), S-BUS (SAIA) and around 60 more company-specific bus systems.
For potential separation and range increase in RS-485 2-wire bus systems, the PSM-ME-RS485 repeater is the optimal solution.
RS485 Repeater Features
- Supports all popular 10/11-bit UART data formats
- Automatic transmit/receive changeover
- Transmission speeds of 1.2 kbps up to 1.5 Mbps
- Integrated, connectable termination resistors
- High-quality 3-way isolation between all interfaces
- Integrated surge protection with transient discharge to the DIN rail
- Supply voltage of 24 V DC or AC to suit the control cabinet
- Plug-in screw connection terminal blocks
- Space-saving slim 22.5 mm device
- Shipbuilding approval per DNV
Hardware Specifications - PSM-ME-RS485/RS485-P Repeater
Serial interface
Interface 1
RS-485 interface, in acc. with EIA/TIA-485, DIN 66259-4/RS-485 2-wire
Operating mode
Semi-duplex
Connection method
Pluggable screw connection
File format/coding
UART (11/10 bit switchable; NRZ)
Data direction switching
Automatic control, min. station response time 1 bits
Transmission medium
2-wire twisted pair, shielded
Transmission length
≤ 1200 m (depends on transmission speed, bus system and cable type)
Cascadability
- 9 (4,8 ... 93,75 kbps)
- 8 (115.2 kbps)
- 7 (136 kbps)
- 6 (187.5 kbps)
- 5 (375 ... 1500 kbps)
Termination resistor
- 390 Ω
- 180 Ω
- 390 Ω (Can be connected)
Conductor cross section flexible min.
0.2 mm²
Conductor cross section flexible max.
2.5 mm²
Conductor cross section AWG min.
24
Conductor cross section AWG max.
12
Protocols supported
transparent protocol
Serial transmission speed
1.2 / 2.4 / 4.8 / 9.6 / 19.2 / 38.4 / 57.6 / 75 / 93.75 / 115.2 / 136 / 187.5 / 375 / 500 / 1500 kbps
Interface 2
RS-485 interface, in acc. with EIA/TIA-485, DIN 66259-4/RS-485 2-wire
Operating mode
Semi-duplex
File format/coding
UART (11/10 bit switchable; NRZ)
Data direction switching
Automatic control, min. station response time 1 bits
Transmission medium
2-wire twisted pair, shielded
Transmission length
≤ 1200 m (depends on transmission speed, bus system and cable type)
Cascadability
9 (4,8 ... 93,75 kbps)
Conductor cross section flexible min.
0.2 mm²
Conductor cross section flexible max.
2.5 mm²
Conductor cross section flexible max.
2.5 mm²
Conductor cross section AWG min.
24
Conductor cross section AWG max.
12
Protocols supported
transparent protocol
Serial transmission speed
1.2 / 2.4 / 4.8 / 9.6 / 19.2 / 38.4 / 57.6 / 75 / 93.75 / 115.2 / 136 / 187.5 / 375 / 500 / 1500 kbps
Ambient conditions
Ambient temperature (operation)
-40°C ... 70°C
Ambient temperature (storage/transport)
-40°C ... 85°C
Permissible humidity (operation)
10 % ... 95 % (non-condensing)
Altitude
5000 m (For restrictions see manufacturer's declaration)
Degree of protection
IP20
Noise immunity
EN 50 082-2
General
Electrical isolation
VCC // RS-485 (A) // RS-485 (B)
Test voltage data interface/power supply
1.5 kVrms (50 Hz, 1 min.)
Electromagnetic compatibility
Conformance with EMC Directive 2014/30/EU
Net weight
188.8 g
Housing material
PA 6.6-FR
Color
green
MTTF
- 1808 Years (SN 29500 standard, temperature 25°C, operating cycle 21 % (5 days a week, 8 hours a day))
- 796 Years (SN 29500 standard, temperature 40°C, operating cycle 34.25 % (5 days a week, 12 hours a day))
- 334 Years (SN 29500 standard, temperature 40°C, operating cycle 100 % (7 days a week, 24 hours a day))
Conformance
CE-compliant
ATEX
II 3 G Ex nA IIC T4 Gc (Please follow the special installation instructions in the documentation!)
UL, USA/Canada
508 recognized
Noise emission
EN 50 081-1
Transmission channels
2 (1/1), TD, RD, half duplex
Bit delay
< 200 ns
Bit distortion
< 1.5 %
Test voltage data interfaces
1.5 kV AC
Test voltage data interface/power supply
1.5 kV AC
Degree of pollution
2
IECEx
Ex nA IIC T4 Gc
Bit distortion, input
max. ± 35 %
Bit distortion, output
< 3.6 %
Power supply
Nominal supply voltage
24 V AC/DC
Supply voltage range
18 V AC/DC ... 30 V AC/DC (via pluggable COMBICON screw terminal block)
Typical current consumption
90 mA (24 V DC)
Max. current consumption
100 mA
Conductor cross section flexible max.
2.50 mm²
Conductor cross section flexible min.
0.20 mm²
Conductor cross section solid max.
2.50 mm²
Conductor cross section solid min.
0.20 mm²
Max. AWG conductor cross section, flexible
12
Min. AWG conductor cross section, flexible
24
Conductor cross section AWG max.
12
Conductor cross section AWG min.
24
Dimensions
Width
22.5 mm
Height
99 mm
Depth
114.5 mm
Environmental Product Compliance
China RoHS
Environmentally Friendly Use Period = 50
Reach and RoHS Compliant
Standards and Regulations
Electromagnetic compatibility
Conformance with EMC Directive 2014/30/EU
Free fall
In acc. with IEC 60068-2-32
Result: 1 m
Vibration resistance
In acc. with EN 60068-2-6/IEC 60068-2-6
Result: 5g, 10...150 Hz, 2.5 h, in XYZ direction
EMC Immunity
- EN 61000-4-2: Contact discharge ± 6 kV (Test Level 3)
- EN 61000-4-3: Frequency range 26 MHz ... 3 GHz (Test Level 3)
- EN 61000-4-4: Criterion B
- EN 61000-4-5: Signal ± 1 kV (Data line, asymmetrical)
- EN 55011
- EN 61000-4-6: Frequency range 0.15 MHz ... 80 MHz
Conformance
CE-compliant
ATEX
II 3 G Ex nA IIC T4 Gc
UL, USA/Canada
508 recognized
Noise emission
EN 50 081-1
Noise immunity
EN 50 082-2
Shock
In acc. with EN 60068-2-27/IEC 60068-2-27
Result: 25g, 11 ms period, half-sine shock pulse
Connection in acc. with standard
CUL
IECEx
Ex nA IIC T4 Gc
UL, USA/Canada
- Class I, Div. 2, Groups A, B, C, D
- Class I, Zone 2, AEx nA IIC T4
- Class I, Zone 2, Ex nA IIC T4 Gc X
Approvals
- UL Recognized
- cUL Recognized
- DNV
- EAC
- KC
- cULus Recognized
- UL Listed
- cUL Listed
- IECEx
- ATEX
- cULus Listed
Commercial data
Packing unit
1
Weight per piece
202.0 g
Country of origin
Germany
Application Diagrams
PSM-ME-RS485/RS485-P Repeater Applications
- Electrical isolation and bus segmentation
- Increasing system availability
- Increasing the range
- Increasing the range
- Extending the number of devices
- Creation of mixed and network structures
Linear Network Diagram
The PSM-ME-RS485 repeater can be used to create network structures that are tailored to the relevant application. The limits set by the RS-485 standard are therefore extended. The standard defines the following basic specifications:
- Up to 32 devices per potential segment
- Only line structures
- Maximum bus cable length: 1200 m
- Maximum branch line length without termination resistor: 5 m, depending on the transmission speed
- Bus cable termination at the start and end of the bus cable
Block diagram
Click on a part number for ordering information
Product Image
Product Description
Power Cord & Part No.
PSM-ME-RS485/RS485-P - RS-485 Repeater. For electrical isolation and range increase in RS-485 2-wire bus systems. Connections via terminal block - requires external DC power supply
PSM-ME-RS485/RS485-P - RS-485 Repeater. For electrical isolation and range increase in RS-485 2-wire bus systems. Connections via terminal block– 24VDC USA wall power adapter included
PSM-ME-RS485/RS485-P - RS-485 Repeater. For electrical isolation and range increase in RS-485 2-wire bus systems. Connections via terminal block– 24VDC UK wall power adapter included
PSM-ME-RS485/RS485-P - RS-485 Repeater. For electrical isolation and range increase in RS-485 2-wire bus systems. Connections via terminal block– 24VDC EU wall power adapter included
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