PSM-ME-RS232/RS232-P Serial Isolator
Interface converter for the electrical isolation of RS-232 interfaces
PSM-ME-RS232/RS232-P Serial Isolator
- 3-way isolation up to 2 kV
- Transmission speed of 115.2 kbps
- Integrated surge protection
- Transmit TxD/RxD data channels and RTS/CTS control lines
For the electrical isolation of RS-232 (V.24) interfaces, the PSM-ME-RS232/RS232-P is the ideal solution.
3-way EMI, RFI and Transient Surge Immunity
The RS-232 interface is an asymmetric voltage interface with common signal ground for all signals. In addition to its very low signal power, a characteristic feature of the interface is that the signal ground is connected to the grounded chassis housing. This results in very little immunity to interference and a maximum range of 15 meters. Using the PSM-ME-RS232/RS232-P Serial Isolator, considerably higher immunity to interference in industrial applications can be achieved.
By isolating the TX/RX data channels and the RTS/CTS control lines the PSM-ME-RS232 Serial Isolator effectively protects your RS232 devices from transient surges, lightning strikes, ground loops and noise issues.
With their high-grade 3-way isolation between both interface sides the PSM-ME-RS232 provides a floating and interference resistant RS-232 interface for the supply and ground potential. Expensive termination devices are also protected against damage by this decoupling.
Any additional potential EMI can be removed from the transmission path by using additional PSM-ME-RS232 Serial Isolators on both device interfaces.
The PSM-ME-RS232 Serial Isolators can be wall mount AC powered or snapped onto standard DIN rails supplied with 24V DC or AC. In the case of variable cable lengths, the RS-232 connection on the field side can be established conveniently using plug-in screw terminal blocks
Serial Isolator Features
- Maximum transmission speed of 115.2 kbps
- High-quality 3-way isolation up to 2 kV (VCC, V.24 (RS-232), TTY)
- Integrated surge protection with transient discharge to the DIN rail
- Transmission speed up to 115.2 kbps
- Transmission of TxD/RxD data channels and RTS/CTS control lines
- Active data transmission indicated by separate data indicators for the transmit and receive channels
- 24 V DC or AC power supply suitable for the control cabinet
PSM-ME-RS232/RS232-P Technical Specifications
| Serial interface | |
|---|---|
| Interface 1 | V.24 (RS-232) interface in acc. with ITU-T V.28, EIA/TIA-232, DIN 66259-1 |
| Connection method | D-SUB 9 plug |
| Transmission length | 15 m (shielded twisted pair) |
| 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. | 13 |
| Pin assignment | DTE/DCE switchover via switch |
| Protocols supported | transparent protocol |
| Serial transmission speed | 115.2 kbps |
| Interface 2 | V.24 (RS-232) interface in acc. with ITU-T V.28, EIA/TIA-232, DIN 66259-1 |
| Connection method | Pluggable screw connection |
| Transmission length | 15 m (shielded twisted pair) |
| Conductor cross section flexible min. | 0.2 mm² |
| Conductor cross section AWG min. | 24 |
| Conductor cross section AWG max. | 13 |
| Ambient Conditions | |
| Ambient temperature (operation) | 0 °C ... 55 °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 61000-6-2:2005 |
| General | |
| Electrical isolation | VCC // V.24 (RS-232) (A) // V.24 (RS-232) (B) |
| Test voltage data interface/power supply | 2 kVrms (50 Hz, 1 min.) |
| Standards/regulations | |
| Electromagnetic compatibility | Conformance with EMC Directive 2014/30/EU |
| Net weight | 123.18 g |
| Housing material | PA |
| Color | green |
| Conformance | CE-compliant |
| UL, USA/Canada | 508 recognized |
| Noise emission | EN 61000-6-3 |
| MTBF | 2263 Years (Telcordia standard, 25°C temperature, 21% operating cycle (5 days a week, 8 hours a day)) |
| 438 Years (Telcordia standard, 40°C temperature, 34.25% operating cycle (5 days a week, 12 hours a day)) | |
| Transmission channels | 4 (2/2), RxD, TxD, RTS, CTS; full duplex |
| Bit delay | < 3 µs |
| Bit distortion | < 5 % |
| Test voltage data interfaces | 2 kV AC |
| Test voltage data interface/power supply | 2 kV AC |
| Power supply | |
| Nominal supply voltage | 24 V AC/DC ±20 % |
| Supply voltage range | 19.2 V AC/DC ... 28.8 V AC/DC |
| Typical current consumption | 40 mA (24 V DC) |
| Protective circuit | Surge protection Suppressor diode |
| Dimensions | |
| Width | 22.5 mm |
| Height | 99 mm |
| Depth | 118.6 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 |
| EMC Immunity | EN 61000-4-2: Contact discharge ± 6 kV (Test Level 3) EN 61000-4-3: Frequency range Test Level 3 EN 61000-4-4: Criterion B EN 61000-4-5: Signal ± 2 kV (12 Ω) EN 55011 EN 61000-4-6 |
Conformance | CE-compliant |
| UL, USA/Canada | 508 recognized |
| Noise emission | EN 61000-6-3 |
| Noise immunity | EN 61000-6-2:2005 |
| Connection in acc. with standard | CUL |
| 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 cULus Recognized UL Listed cUL Listed cULus Listed |
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| Commercial data | |
| Packing unit | 1 |
| Weight per piece | 181.2 g |
| Country of origin | Germany |
| Interference-free RS-232 interface |
|---|
Use the PSM-ME-RS232/RS232-P Serial Isolator for considerably higher immunity to interference in industrial applications. |
| Electrical isolation |
Use a PSM-ME-RS232/RS232-P Serial Isolator on both device interfaces to remove any potential EMI. |
| Interface Converter |
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| Block Diagram |
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