ABB CI867 3BSE043661R1 Dual Channel Modbus TCP

Description

3. Key Technical Specifications

• Communication Protocol: Modbus TCP
• Number of Channels: 2 (Ch1: 10/100 Mbit/s full duplex, Ch2: 10 Mbit/s half duplex)
• Master/Slave: Master and Slave supported
• Max Stations: 70 slaves + 8 masters (combined channels)
• Connector: RJ-45 female (8-pin) per channel
• Max Units on CEX Bus: 12
• Power Consumption: Typ. 160 mA at 24 V (via CEX bus)
• Operating Temperature: 0 to +55 °C
• Storage Temperature: -40 to +70 °C
• Dimensions (W x H x D): 59 mm x 185 mm x 127.5 mm
• Weight (including base): Approx. 700 g
• Hot Swap: Supported
• Module Redundancy: Supported

4. Product Introduction

The ABB CI867 (3BSE043661R1) is a dual-channel Modbus TCP communication interface for the AC800M controller. It connects the controller to external devices such as drives, instruments, and third-party PLCs over Ethernet using the Modbus TCP protocol.

This module sees regular use in integration projects where AC800M systems exchange data with Modbus TCP-enabled equipment. It offers two Ethernet ports for flexible network setups and supports both master and slave operation, making it a practical choice for expanding I/O or linking to existing Modbus infrastructure without major rewiring.

CI867 3BSE043661R1

CI867 3BSE043661R1

5. Installation & Configuration Guide

Stage 1: Pre-Installation Preparation (15-20 minutes) ⚠️ Safety First: Notify operations of planned downtime, verify safe state, lock out/tag out power, and wait 5 minutes for capacitor discharge. Tools Required: Grounded ESD wrist strap, PH1 screwdriver, multimeter, wire labels, smartphone for photos. Data Backup: Export communication settings, photograph existing wiring and port configurations, document IP addresses and slave mappings.

Stage 2: Removing the Old Module

1. Remove the front cover.
2. Label and disconnect Ethernet cables and any field connections.
3. Release locking tabs and pull the module straight out to protect CEX bus connectors.
4. Inspect the backplane for debris or damage.

⚠️ Retain the old module for reference during commissioning.

Stage 3: Installing the New Module (10-15 minutes)

1. Confirm the replacement is CI867 (3BSE043661R1) and use ESD precautions.
2. Configuration Clone: Match any hardware settings from photos of the old unit.
3. Seat the module firmly into the CEX bus slot until it locks.
4. Reconnect Ethernet cables and secure all connections.

Self-Checklist: [ ] Model verified, [ ] Ports configured, [ ] Module fully seated, [ ] Cables secure.

Stage 4: Power-On & Testing (15-25 minutes) Pre-Power Check: Verify no shorts on the 24 V supply with a multimeter. Power-On Steps:

1. Power the rack.
2. Monitor LEDs for normal status (green indicators).
3. Use Control Builder to verify module detection and set IP parameters.
4. Download configurations and test Modbus communication with target devices.
5. Perform read/write tests on key registers.

⚠️ Troubleshooting Note: Communication failures often stem from IP address conflicts, incorrect port usage (Ch1 vs Ch2), or firewall settings on the network. Solid error LEDs typically point to configuration or cable problems.

6. Frequently Asked Questions (FAQ)

Can this module be hot-swapped under power? It supports hot swap, but I recommend powering down the section if possible. In running plants, follow proper procedures to minimize risk to the CEX bus and ongoing communications.

Is this model obsolete, and are the units genuinely new? The CI867 series is established but still widely deployed. New Original units come from surplus with complete traceability. Every module receives full functional testing on an AC800M rack, including extended communication load runs.

What is the direct replacement if this exact model is out of stock? The CI867A is the updated version with a single higher-speed channel. Confirm compatibility with your specific AC800M firmware and application before substituting.

Will I lose my programming logic when replacing this communication module? No. The application logic stays in the CPU. You will need to reload or verify the Modbus TCP communication settings and connections after installation.

Why is your price lower than current OEM factory list price? These are new surplus modules from verified channels. They undergo the same quality checks as new production but avoid full OEM distribution markups. All units ship with test reports.