Communication Module | ABB 1VCF750079R801 REF 542plus
Manufacturer: ABB
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Part Number: 1VCF750079R801
Condition：New with Original Package
Product Type: Communication Modules
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
ABB 1VCF750079R801 Modbus RS485 Communication Module
The ABB 1VCF750079R801 (Product ID: 1VCF750079801) is a serial communication module designed for integration with ABB REF 542plus protection and control systems. It provides a dedicated RS485 interface to enable data exchange between medium-voltage feeder protection relays and supervisory networks such as SCADA systems, PLCs, and remote monitoring consoles.
Serial Protocol and Interface Specifications
Operating on an RS485 physical layer, the module supports Modbus RTU and ASCII protocols over 2-wire or 4-wire bus topology. It handles serial transmission speeds up to 115.2 kbps, allowing real-time retrieval of protection parameters, telemetry, and event records over network distances up to 1200 meters.
Isolation and Electrical Requirements
To protect internal relay logic from field noise and ground loops, the module incorporates galvanic isolation between the internal control circuitry and the external RS485 communication bus. The unit operates from an auxiliary DC supply with an input voltage range of 12-24 V DC (typical 24 V DC plus-minus 10%), drawing approximately 100 mA with power consumption rated at 1.2 W to 3 W.
| Parameter | Specification |
|---|---|
| Model | 1VCF750079R801 |
| Brand | ABB |
| Product ID | 1VCF750079801 |
| Product Type | Modbus RS485 Communication Module |
| Compatible Equipment | ABB REF 542plus Protection and Control Systems |
| Communication Interface | RS485 (2-wire or 4-wire) |
| Supported Protocols | Modbus RTU, ASCII |
| Transmission Speed | Up to 115.2 kbps (9600 bps default) |
| Maximum Cable Distance | Up to 1200 m |
| Isolation | Galvanic isolation between system and network |
| Power Supply Voltage | 12-24 V DC (24 V DC plus-minus 10%) |
| Power Consumption | 1.2 W to 3 W (approx. 100 mA) |
| Operating Temperature | -25 deg C to +70 deg C |
| Protection Rating | IP20 (when installed in enclosure) |
| Dimensions (W x H x D) | 110 mm x 75 mm x 40 mm |
| Net Weight | 0.28 kg |
| Country of Origin | Malaysia |
Frequently Asked Questions
Q: Which ABB protection platform uses the 1VCF750079R801 module? A: The module is designed specifically for integration with ABB REF 542plus medium-voltage feeder protection and control systems.
Q: Does the 1VCF750079R801 support 4-wire RS485 connections? A: Yes, the RS485 serial interface supports both 2-wire and 4-wire bus wiring configurations for Modbus RTU communications.