PSM-ME-RS485/RS485-P Repeater
RS485 to RS485 Repeater
PSM-ME-RS485/RS485-P 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
PSM-ME-RS485/RS485-P Technical Specifications
| 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 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 |
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| Environmental Product Compliance | |
| China RoHS | Environmentally Friendly Use Period = 50 |
| Reach and RoHS Compliant | 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), Indirect 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 |
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| Commercial data | |
| Packing unit | 1 |
| Weight per piece | 202.0 g |
| Country of origin | Germany |
| PSM-ME-RS485/RS485-P Repeater Applications |
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| 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:
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| Block diagram |
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