Brand: ABB
Category: Other
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for ILPH RS 232 / RS 422 - RS 485 ISOLATED
Uploaded: Nov. 21, 2025, 6:44 p.m.
Manual Publish Date: 2007-03-01
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1. GENERAL
Interface between an RS 232 serial link and an RS 422 or RS 485 serial link with 500 VDC insulation. Extend transmission distance beyond the 15 m limit of the RS 232 serial link, to cross "noisy" environments, to isolate the 2 systems, to perform multipointing (network) etc.3.1 POWER SUPPLY
8.5 V to 28 VDC, polarity inversion protection, less than 100 mA power requirement. Galvanic isolation: Power supply / RS 422 - RS 485: 500 VDC. Includes one yellow "power on" LED and a screw-type plug-in connector.3.2 RS 232 LINK
Complies with EIA RS 232 C/ CCITT V24 / V28. Features over voltage I/O protection. Supports speeds up to 38400 Bauds over 15 m. Galvanic isolation: RS 232 / RS 422 - RS 485: 500 VDC. Includes 3 green LEDs (RxD, TxD, CTRL IN) and screw connection.3.3 RS 422 - RS 485 LINK
Complies with EIA RS 485 and compatible EIA RS 422 / CCITT V11. Features over voltage I/O protection. Supports speeds up to 38400 Bauds over 1200m. Galvanic isolation: RS 422 - RS 485 / Power supply: 500 VDC, RS 422 - RS 485 / RS 232: 500 VDC. Supports up to 32 receivers simultaneously. Screw connection.Troubleshooting and error codes
| CTRL IN STATUS | ACTION ON RS 485 |
|---|---|
| 0 logic (+3V ≤ U ≤ +25V) | Transmitter active / Receiver inactive |
| 1 logic (-25V ≤ U ≤ -3V) | Transmitter inactive / Receiver active |
| High impedance | Transmitter inactive / Receiver active |