The performance and availability of bus systems can be significantly increased by using repeaters. In addition to electrical isolation, bus segmentation with repeaters makes it possible to multiply the permissible coverage of the network and to extend the number of devices. The PSM-ME-RS485/RS485-P compact repeater is for universal use in RS-485 2-wire bus systems. The device supports bus systems that rely on the UART/NRZ data format with a character length of 10 or 11 bits.
PSM-ME-RS485/RS485-P
-
Repeater
2744429
Repeater, for electrical isolation and increasing the range in RS-485 2-wire bus systems, 3-way isolation, DIN-rail mountable. Product is being prepared for compliance with the Cyber Resilience Act (CRA).
Product details
| Note on application | Only for industrial use |
| Note on application | As things stand now, we are preparing the product so that, as of December 11, 2027, it will comply with the requirements of the EU Cyber Resilience Act (CRA) based on the information currently available regarding the CRA. |
| Utilization restriction | |
| CCCex note | Use in potentially explosive areas is not permitted in China. |
| Product type | Interface converter |
| Application | RS-485 |
| MTTF | 1808 Years (SN 29500 standard, temperature 25°C, operating cycle 21%) |
| 796 Years (SN 29500 standard, temperature 40°C, operating cycle 34.25%) | |
| 334 Years (SN 29500 standard, temperature 40°C, operating cycle 100%) | |
| Insulation characteristics | |
| Pollution degree | 2 |
| Electrical isolation | VCC // RS-485 (A) // RS-485 (B) |
| Maximum power dissipation for nominal condition | 2.16 W |
| Test voltage data interface/power supply | 1.5 kVrms (50 Hz, 1 min.) |
| Supply | |
| Supply voltage range | 18 V AC/DC ... 30 V AC/DC (via pluggable COMBICON screw terminal block) |
| Nominal supply voltage | 24 V AC/DC (±20 %) |
| Typical current consumption | 25 mA (24 V DC) |
| Supply | |
| Single conductor/terminal point, rigid | 0.2 mm² ... 2.5 mm² |
| Single-wire/terminal point, flexible | 0.2 mm² ... 2.5 mm² |
| Conductor cross-section, flexible [AWG] | 24 ... 12 |
| Stripping length | 7.00 mm |
| Tightening torque | 0.56 Nm ... 0.79 Nm |
| Bit distortion | < 1.5 % |
| Bit distortion, input | max. ± 35 % |
| Bit distortion, output | < 3.6 % |
| Bit delay | < 200 ns |
| Signal | Modbus |
| Transmission channels | 2 (1/1), TD, RD, half duplex |
| Data: RS-485 interface, in acc. with EIA/TIA-485, DIN 66259-4/RS-485 2-wire | |
| 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 |
| Connection method | Pluggable screw connection |
| Tightening torque | 0.5 Nm ... 0.6 Nm (Shield clamp) |
| 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) | |
| Single conductor/terminal point, rigid | 0.2 mm² ... 2.5 mm² |
| Single-wire/terminal point, flexible | 0.2 mm² ... 2.5 mm² |
| Max. AWG conductor cross-section, flexible | 12 |
| Min. AWG conductor cross-section, flexible | 24 |
| Stripping length | 7 mm |
| Transmission medium | 2-wire twisted pair, shielded |
| File format/coding | UART (11/10 bit switchable; NRZ) |
| Data direction switching | Automatic control, min. station response time 1 bits |
| Protocols supported | transparent protocol |
| Data: RS-485 interface, in acc. with EIA/TIA-485, DIN 66259-4/RS-485 2-wire | |
| 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 |
| 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) | |
| Single-wire/terminal point, flexible | 0.2 mm² ... 2.5 mm² |
| Max. AWG conductor cross-section, flexible | 12 |
| Min. AWG conductor cross-section, flexible | 24 |
| Transmission medium | 2-wire twisted pair, shielded |
| File format/coding | UART (11/10 bit switchable; NRZ) |
| Data direction switching | Automatic control, min. station response time 1 bits |
| Protocols supported | transparent protocol |
| Dimensional drawing |
|
| Width | 22.5 mm |
| Height | 99 mm |
| Depth | 114.5 mm |
| Color (Housing) | green (RAL 6021) |
| Material (Housing) | PA 6.6-FR |
| Free fall in accordance with IEC 60068-2-32 | Free fall: 1 m |
| Vibration resistance in accordance with EN 60068-2-6/IEC 60068-2-6 | Operation: 5g, 10...150 Hz, 2.5 h, in XYZ direction |
| Shock in accordance with EN 60068-2-27/IEC 60068-2-27 | Operation: 25g, 11 ms period, half-sine shock pulse |
| Ambient conditions | |
| Degree of protection | IP20 |
| Ambient temperature (operation) | -40 °C ... 70 °C |
| Ambient temperature (storage/transport) | -40 °C ... 85 °C |
| Altitude | ≤ 5000 m (For restrictions, see the manufacturer's declaration for altitude operation) |
| Permissible humidity (operation) | 10 % ... 95 % (non-condensing) |
| CE | |
| Certificate | CE-compliant |
| ATEX | |
| Identification | II 3 G Ex ec IIC T4 Gc |
| Certificate | IBExU16ATEXB004 X |
| Note | Please follow the special installation instructions in the documentation! |
| IECEx | |
| Identification | Ex ec IIC T4 Gc |
| Certificate | IECEx IBE 15.0034X |
| UL, USA/Canada | |
| Identification | 508 Recognized |
| Class I, Zone 2, AEx nA IIC T4 | |
| Ex nA IIC T4 Gc X | |
| Class I, Div. 2, Groups A, B, C, D T4 | |
| KC approval for South Korea | |
| Certificate | KCC-REI-PCK-FL2744429 |
| Corrosive gas test | |
| Identification | ISA-S71.04-1985 G3 Harsh Group A |
| Shipbuilding | |
| Identification | DNV GL |
| Shipbuilding data | |
| Temperature | B |
| Humidity | A |
| Vibration | A |
| EMC | B |
| Enclosure | Required protection according to the Rules shall be provided upon installation on board |
| Electromagnetic compatibility | Conformance with EMC Directive 2014/30/EU |
| Noise immunity | EN 61000-6-2:2005 |
| Noise emission | |
| Standards/regulations | EN 61000-6-4 |
| Electrostatic discharge | |
| Standards/regulations | EN 61000-4-2 |
| Electrostatic discharge | |
| Contact discharge | ± 6 kV (Test Level 3) |
| Discharge in air | ± 8 kV (Test Level 3) |
| Indirect discharge | ± 6 kV (Test Level 3) |
| Comments | Criterion B |
| Electromagnetic HF field | |
| Standards/regulations | EN 61000-4-3 |
| Electromagnetic HF field | |
| Frequency range | 26 MHz ... 3 GHz (Test Level 3) |
| Field intensity | 10 V/m |
| Comments | Criterion A |
| Fast transients (burst) | |
| Standards/regulations | EN 61000-4-4 |
| Fast transients (burst) | |
| Input | ± 4 kV (Test Level 3) |
| Signal | ± 2 kV (Test Level 3) |
| Comments | Criterion B |
| Surge current load (surge) | |
| Standards/regulations | EN 61000-4-5 |
| Surge current load (surge) | |
| Input | ± 0.5 kV (DC supply) |
| Signal | ± 2 kV (Data line, asymmetrical) |
| Comments | Criterion B |
| Conducted interference | |
| Standards/regulations | EN 61000-4-6 |
| Conducted interference | |
| Frequency range | 0.15 MHz ... 80 MHz |
| Comments | Criterion A |
| Voltage | 10 V |
| Emitted interference | |
| Standards/regulations | EN 55011 |
| Comments | Class A, industrial applications |
| Criteria | |
| Criterion A | Normal operating behavior within the specified limits. |
| Criterion B | Temporary impairment to operational behavior that is corrected by the device itself. |
| Mounting type | DIN rail mounting |
| Mounting position | On horizontal DIN rail |
UL Recognized
Approval ID: E238705DNV GL
Approval ID: TAA00001KR_7KC
Approval ID: KCC-REI-PCK-FL274442cUL Recognized
Approval ID: E199827| Nominal voltage UN | Nominal current IN | Cross section AWG | Cross section mm2 | |
|---|---|---|---|---|
| keine | ||||
| 24 V | 0.09 A | |||
cUL Listed
Approval ID: E199827UL Listed
Approval ID: E199827
Your advantages
Mounting on standard EN DIN rails
Transmission speeds of up to 1.5 Mbps
High-quality 3-way isolation between all interfaces
Space-saving slim 22.5 mm device
Integrated, connectable termination resistors
All connections can be plugged in using a COMBICON screw terminal block
Shipbuilding approval in accordance with DNV GL
