Description
Detailed parameter table
Parameter name | Parameter value |
Product model | CMA120 |
Manufacturer | ABB |
Product category | Motor control module (part of ABB’s low-voltage drive accessories) |
Power supply | 24 V DC ±10%, power consumption ≤ 8 W |
Input signals | 2 x analog (0-10 V, 4-20 mA); 4 x digital (dry contact) |
Output signals | 2 x relay outputs (NO/NC, 250 V AC, 5 A); 1 x analog (0-10 V) |
Communication protocol | Modbus RTU (RS485) |
Operating temperature | -10°C to +55°C |
Storage temperature | -40°C to +85°C |
Dimensions (WxHxD) | 45 mm x 175 mm x 120 mm |
Mounting | DIN rail (35 mm) |
Protection class | IP20 |
Isolation | 2.5 kV AC between analog/digital circuits and power |
Certifications | CE, UL 508, IEC 61010-1 |
ABB CI867K01 3BSE043660R1
Product introduction
The ABB CMA120 is a compact motor control module designed to enhance the functionality of low-voltage drives, such as the ACS800-104-0016-3+N682+Q967, by enabling advanced monitoring and control of motors like the 1TGE106170M4200. As part of ABB’s drive accessory portfolio, it acts as an interface between sensors, switches, and the drive, extending automation capabilities in applications ranging from conveyor systems to pumps.
This module accepts analog signals (e.g., from pressure or flow sensors) and digital inputs (e.g., emergency stops), processing them to adjust motor operation via the connected drive. The CMA120 communicates with the ACS800-104-0016-3+N682+Q967 drive via Modbus RTU, allowing seamless integration into larger control systems monitored by HMIs like the HC800. Its compact DIN rail design and wide operating temperature range make it suitable for industrial cabinets in manufacturing, water treatment, and food processing facilities.
Core advantages and technical highlights
Flexible signal processing: The CMA120’s dual analog inputs enable precise motor control based on process variables. A wastewater plant used it to adjust a 1TGE106170M4200 motor-driven pump via the ACS800-104-0016-3+N682+Q967 drive, using a 4-20 mA signal from a level sensor—maintaining constant tank levels with ±2% accuracy.
Simplified system integration: With Modbus RTU communication, the CMA120 connects directly to HMIs like the HC800 and PLCs such as the PM861AK01 3BSE018157R1. A food packaging line integrated the module to send motor runtime data to the HC800, enabling predictive maintenance scheduling that reduced downtime by 18%.
Enhanced safety features: Four digital inputs support emergency stop and interlock signals, triggering drive shutdowns within 10 ms. An automotive plant used the CMA120 to link safety doors to a 1TGE106170M4200 motor, stopping the conveyor instantly when doors opened—meeting ISO 13849-1 PLd requirements.
Cost-effective automation: The module eliminates the need for a separate PLC in small-scale applications. A small factory controlling two 1TGE106170M4200 motors used the CMA120 to handle start/stop logic and sensor feedback, reducing hardware costs by 30% compared to a PLC-based setup.
Typical application scenarios
Pump control systems: In a municipal water distribution network, the CMA120 monitors pressure sensors (4-20 mA) and adjusts the 1TGE106170M4200 motor via the ACS800-104-0016-3+N682+Q967 drive. It triggers alarms through relay outputs when pressure drops below 3 bar, ensuring consistent water supply while communicating status to the HC800 HMI for remote monitoring.
Conveyor belt automation: A logistics warehouse uses the CMA120 to control a 1TGE106170M4200-powered conveyor. Digital inputs detect package presence, while analog inputs adjust speed based on upstream/downstream traffic. The module’s relay outputs activate diverters, optimizing package sorting—boosting throughput by 25% compared to manual control.
HVAC fan regulation: In a commercial building, the CMA120 receives temperature sensor data (0-10 V) and modulates a 1TGE106170M4200 fan motor via the drive. It integrates with building management systems via Modbus, adjusting fan speed between 30-100% to maintain set temperatures—reducing energy use by 30% versus fixed-speed operation.
ABB CI867K01 3BSE043660R1
Related model recommendations
CMA140: Advanced version of the CMA120 with 6 digital inputs and Profibus DP communication, suitable for larger systems.
ACS800-104-0016-3+N682+Q967: ABB’s variable speed drive, controlled by the CMA120 to regulate motors like the 1TGE106170M4200.
HC800: Industrial HMI that visualizes data from the CMA120, enabling operators to monitor motor status and adjust setpoints.
1TGE106170M4200: IE3 motor, whose speed and torque are managed by the CMA120 via the connected drive.
PM861AK01 3BSE018157R1: PLC controller that can override CMA120 settings in complex automation networks, ensuring system-wide coordination.
07AC91: Communication module that extends the CMA120’s Modbus signal to Profibus networks, integrating with DCS systems.
Installation, commissioning and maintenance instructions
Installation preparation: Mount the CMA120 on a 35 mm DIN rail, leaving 20 mm clearance for cooling. Connect 24 V DC power using 0.5 mm² shielded cables, torquing terminals to 0.5 Nm. Wire analog inputs (e.g., from sensors) using twisted-pair cables, and digital inputs (e.g., emergency stops) with 1 mm² wires. Link the module to the ACS800-104-0016-3+N682+Q967 drive via RS485 (Modbus), ensuring a maximum cable length of 1200 m. Set the module address (1-247) via DIP switches before power-up.
Maintenance suggestions: Inspect quarterly for dust buildup—clean with compressed air (max 5 bar). Test input/output signals annually using a multimeter to verify accuracy (e.g., 4 mA = 0%, 20 mA = 100% for analog inputs). Check Modbus communication with a protocol analyzer to ensure <0.1% error rate. Replace relay outputs if contacts show pitting (visible via inspection window). Store spare CMA120 modules in anti-static bags at 10-30°C, avoiding moisture exposure.
Service and guarantee commitment
ABB provides a 2-year warranty for the CMA120, covering manufacturing defects and component failures under normal operation. During this period, technical support offers 24/7 assistance, including help with wiring, Modbus configuration, and integration with drives like the ACS800-104-0016-3+N682+Q967.
Customers access user manuals, wiring diagrams, and compatibility guides via ABB’s Industrial Portal. Optional services include on-site commissioning (with signal calibration) and training on Modbus communication setup. ABB guarantees spare parts availability for 8 years post-production, ensuring long-term support for motor control systems. This commitment reflects confidence in the module’s reliability as a key accessory in drive-based automation.
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