07AC91 GJR5252300R0101

07AC91 GJR5252300R0101 is an ABB AC31 series CS31 bus remote hybrid analog I/O module. The module is powered by 24V DC and features electrical isolation between the bus and I/O, self-diagnosis for disconnection and over-range, DIN rail installation, and convenient maintenance. As a distributed remote I/O unit, it collects signals from sensors such as temperature, pressure and liquid level nearby and outputs analog signals to control regulating valves and frequency converters. Relying on the integrated mixed-channel design, it saves space inside the cabinet and has strong anti-interference ability. It is a commonly used original I/O spare part for old AC31 projects

Core Product Features

1. Analog quantity acquisition: Collect on-site sensor signals: temperature PT100 with transmitter, pressure, liquid level, flow, pH and other 4-20mA/±10V transmitter signals, convert on-site continuous analog quantities into digital quantities, and upload them to the AC31 controller through the CS31 bus.

2. The analog control output converts the digital instructions issued by the PLC and the controller into 4~20mA / ±10V analog signals to control on-site actuators such as regulating valves, frequency converters, and electric actuators.

3. The CS31 bus remote I/O communication, as a distributed remote station of AC31, forms a CS31 bus network with the AC31 master station CPU, achieving long-distance on-site signal collection and reducing a large amount of hard wires from the control cabinet to the site.

4. Hardware self-diagnosis and fault reporting channel disconnection, signal over-range detection module power supply failure, bus communication failure detection faults are indicated by the red light on the panel, and the diagnosis word is uploaded to the controller for upper-level alarm.

5. Channel mode configuration switching can be achieved by dial-dialing to select either 8AI+8AO or 16 configurable channels, adapting to different point requirements.

6. Signal isolation protection: The CS31 bus and I/O signals are electrically isolated to reduce on-site interference from entering the PLC main control unit and protect the controller.

Application Scenarios

Applicable system: ABB AC31 PLC/Advant Controller31 control system. Cannot be directly used in AC800M, S800, third-party PLC

1. Water treatment industry: sewage, water purification plants, liquid level, pressure and pH collection; 1. Analog control of regulating valves and dosing pumps

2. Power plants, thermal power: boiler auxiliary equipment, heat network systems, temperature, pressure and flow collection, regulating valve control

3. Chemical and petrochemical industries: Process monitoring and regulation control for small-scale facilities and tank farms.

4. Food and Beverage, pharmaceutical production lines: Temperature and pressure collection, variable frequency speed regulation, flow rate regulation.

5. HVAC building large-scale HVAC: Temperature and humidity collection of air conditioning units, analog regulation of cold water valves/hot water valves.

6. Automation renovation of old factories: Replacement of spare parts for the original AC31 system, expansion of remote analog quantity sites for old projects

Important Notes

1. The bus is a CS31 private bus and cannot be directly connected to Profibus, Modbus, S800 I/O, or AC800M. It can only be paired with the AC31 main controller. 

2. The maximum length of the analog cable is recommended to be ≤100 meters. Long cables are prone to introducing interference and require strict shielding and grounding. 

3. It is only for installation inside the cabinet and must not be used in explosion-proof hazardous areas unless an additional explosion-proof installation housing version is provided.