The RS-485 standard allows more than two devices to communicate with one another. Converting the V.24 (RS-232) point-to-point interface into the bus-capable RS-485 standard makes it possible to network up to 32 devices via a 2- or 4-wire cable.
PSM-ME-RS232/RS485-P
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Interface converter
2744416
Interface converter, for converting RS-232 (V.24) to RS-422 (V.11) and RS-485, with electrical isolation, 2 channels, rail-mountable
Product details
| Note on application | |
| Note on application | Only for industrial use |
| Utilization restriction | |
| EMC note | EMC: class A product, see manufacturer's declaration in the download area |
| Utilization restriction | |
| CCCex note | Use in potentially explosive areas is not permitted in China. |
| Product type | Interface converter |
| Application | RS-232 |
| RS-422 | |
| RS-485 | |
| MTTF | 1654 Years (SN 29500 standard, temperature 25°C, operating cycle 21%) |
| 746 Years (SN 29500 standard, temperature 40°C, operating cycle 34.25%) | |
| 310 Years (SN 29500 standard, temperature 40°C, operating cycle 100%) | |
| MTBF | 10 Years (Telcordia standard, temperature 40 °C, operating cycle 100 % (7 days a week, 24 hours a day)) |
| Insulation characteristics | |
| Pollution degree | 2 |
| Electrical isolation | VCC // V.24 (RS-232) // RS-485 |
| Maximum power dissipation for nominal condition | 2.04 W |
| Test voltage data interface/power supply | 1.5 kV AC |
| 1.5 kV AC | |
| Test voltage data interfaces | 1.5 kV AC |
| 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 |
| Typical current consumption | 85 mA (24 V DC) |
| Max. current consumption | 100 mA |
| 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 |
| Tightening torque | 0.56 Nm ... 0.79 Nm |
| Interface | RS-232/-485 |
| Bit distortion | ≤ 5 % |
| Bit delay | ≤ 2.5 µs |
| Signal | Modbus |
| Transmission channels | 2 (1/1), RxD, TxD, full duplex |
| Data: V.24 (RS-232) interface in acc. with ITU-T V.28, EIA/TIA-232, DIN 66259-1 | |
| Serial transmission speed | 1.2; 2.4; 4.8; 7.2; 9.6; 19.2; 31.25; 38.4; 57.6; 75; 93.75; 115.2 kbps |
| Connection method | D-SUB 9 plug |
| Pin assignment | DTE/DCE switchover via switch |
| Transmission length | 15 m (shielded twisted pair) |
| 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 |
| Protocols supported | transparent protocol |
| Data: RS-422 interface in acc. with ITU-T V.11, EIA/TIA-422, DIN 66348-1 | |
| Serial transmission speed | 1.2; 2.4; 4.8; 9.6; 19.2; 38.4; 57.6; 75; 93.75; 115.2 kbps |
| Connection method | Pluggable screw connection |
| Transmission length | 1200 m (shielded twisted pair) |
| Termination resistor | 390 Ω |
| 150 Ω | |
| 390 Ω (Can be connected) | |
| Single-wire/terminal point, flexible | 0.2 mm² ... 2.5 mm² |
| Max. AWG conductor cross section, flexible | 13 |
| Min. AWG conductor cross section, flexible | 24 |
| Protocols supported | transparent protocol |
| Data: RS-485 interface in acc. with EIA/TIA-485, DIN 66259-1 | |
| Serial transmission speed | 1.2; 2.4; 4.8; 9.6; 19.2; 38.4; 57.6; 75; 93.75; 115.2 kbps |
| Connection method | Pluggable screw connection |
| Transmission length | 1200 m (shielded twisted pair) |
| Termination resistor | 390 Ω |
| 150 Ω | |
| 390 Ω (Can be connected) | |
| Single-wire/terminal point, flexible | 0.2 mm² ... 2.5 mm² |
| Max. AWG conductor cross section, flexible | 14 |
| Min. AWG conductor cross section, flexible | 24 |
| Data direction switching | Automatic control or via RTS/CTS |
| 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 | : 1 m |
| Vibration resistance in accordance with EN 60068-2-6/IEC 60068-2-6 | : 5g, 10...150 Hz, 2.5 h, in XYZ direction |
| Shock in accordance with EN 60068-2-27/IEC 60068-2-27 | : 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 nA IIC T4 Gc |
| Certificate | IBExU16ATEXB004 X |
| Note | Please follow the special installation instructions in the documentation! |
| IECEx | |
| Identification | Ex nA IIC T4 Gc |
| Certificate | IECEx IBE 15.0034X |
| UL, USA/Canada | |
| Identification | 508 Recognized |
| 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 | |
| KC approval for South Korea | |
| Certificate | MSIP-REI-PCK-ME2744416 |
| 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) |
| 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 | ± 2.2 kV (Test Level 3) |
| Signal | ± 2.2 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 | ± 1 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 |
UL Recognized
Approval ID: E238705DNV GL
Approval ID: TAA00001KRKC
Approval ID: MSIP-REI-PCK-ME27444cUL Recognized
Approval ID: E199827| Nominal voltage UN | Nominal current IN | Cross section AWG | Cross section mm2 | |
|---|---|---|---|---|
| 24 V | 0.085 A |
IECEx
Approval ID: IECEx IBE 15.0034 XcUL Listed
Approval ID: E199827UL Listed
Approval ID: E199827ATEX
Approval ID: IBExU 16 ATEX B004 X
Your advantages
Mounting on standard EN DIN rails
Transmission speed of 4.8 Kbps ... 115.2 Kbps
High-quality 3-way isolation between power supply, RS-232, and RS-422/RS-485 for safe decoupling of potentials with 2 kV
RS-422 4-wire point-to-point operation
RS-485 2-wire operation, half duplex
RS-485 4-wire operation, full duplex
Automatic RS-485 transmit/receive changeover
Integrated data indicator for dynamic indication of transmit and receive data
Integrated surge protection with transient discharge to the DIN rail
Shipbuilding approval in accordance with DNV GL