Configured for fiber optic data exchange in ACS800 drive systems, the ABB RDCO-03C (RDCO-03C DDCS Communication Modules) provides direct physical execution of high-speed inter-drive synchronization and external controller interfacing.

Model Identification

The RDCO-03C is a DDCS (Distributed Drives Communication System) interface module featuring four independent fiber optic channels (CH0 to CH3). It is engineered for direct mounting onto RMIO control boards or BCU units within the ACS800 drive platform.

Hardware Specifications

ABB Industrial Control & Drive Communication

The RDCO-03C leverages deterministic backplane bus communication velocity to maintain tight synchronization across multi-drive arrays. It supports I/O density scaling via fiber optic distribution and offers firmware flash compatibility for system-level logic updates. The module utilizes optical transmission to ensure immunity against electromagnetic interference, providing stable communication links for Master/Follower coordination and fieldbus integration.

## Ordering info

• RDCO-03C DDCS Communication Module.

• Mounting hardware for RMIO/BCU interface.

• Technical documentation for fiber optic channel configuration.

Field Installation Guidelines

Mounting

• Align the module with the dedicated expansion connector on the RMIO or BCU board.

• Secure the module into position to ensure proper alignment of the fiber optic transceivers.

Wiring

• Connect Plastic Optical Fiber (POF) or Hard Clad Silica (HCS) cables to the appropriate CH0-CH3 ports.

• Observe minimum bending radii for fiber optic cables to prevent signal attenuation.

• Ensure connectors are fully seated and free from dust or contaminants to maintain signal integrity.

Frequently Asked Questions

• Q: Does the module support hot-swapping?

  A: No. Ensure all drive power is removed and internal capacitors are discharged before installing or removing the RDCO-03C to prevent damage to the control board interface.

• Q: What are the primary functions of the four channels?

  A: CH0 is for fieldbus/controller interfacing, CH1 for local I/O expansion, CH2 for Master/Follower synchronization, and CH3 for PC-based diagnostics.

• Q: What types of fiber optic cable are supported?

  A: The module supports both Plastic Optical Fiber (POF) and Hard Clad Silica (HCS) cabling.

• Q: How does the module maintain communication integrity?

  A: Optical transmission provides inherent galvanic isolation and immunity to electromagnetic interference common in high-power drive environments.

• Q: Can I update the module firmware?

  A: Yes, the module supports firmware flashing to ensure compatibility with specific drive application software versions.

• Q: Is the module compatible with other ABB drive series?

  A: The RDCO-03C is specifically optimized for the ACS800 drive family; compatibility with other series should be verified via the specific drive hardware manual.

• Q: What is the maximum data transmission rate?

  A: The communication interface supports transmission rates up to 1 Mbps.

• Q: Are there diagnostic LEDs on the module?

  A: Yes, status LEDs are provided to monitor channel activity and communication link health between the drive and the external network nodes.