ABB CMA120 3DDE300400 Basic Controller Panel Unit

Technical Specifications

Model: CMA120

Part Number: 3DDE300400

Brand: ABB

Product Type: Integrated basic controller panel with HMI

Power Supply: 24VDC

Digital Input: 8‑channel 24VDC sink‑type digital input

Analog Input: 4‑channel, 4‑20mA / 0‑10V configurable

Relay Output: 2‑channel relay output, 5A 250VAC

Display & Operation: Monochrome LCD display, membrane keypad

Communication Interface: RS‑485, supports Modbus‑RTU protocol

Processor: 32‑bit processor

Memory: 1MB Flash, 256KB RAM

Front Panel Protection: IP65, rear side IP20

Installation Method: Cabinet door mounting

Operating Temperature: ‑20℃ ~ +60℃, non‑condensing

Weight: 0.35kg

Dimension: 144mm ×82mm ×40mm

Compatible System: Industrial machinery, power auxiliary equipment, on‑site local control cabinet

Core Function: Integrates control logic, I/O acquisition and local man‑machine interface. Complete field signal collection, logic control and on‑site parameter setting, status monitoring via LCD screen and keypad; realize data interaction with upper‑level control system through Modbus‑RTU communication.

Product Details

The CMA120 3DDE300400 is ABB integrated basic controller panel unit, combining controller core, I/O channels and local HMI in one compact panel‑mount housing.

This unit is designed for cabinet door installation, front‑panel IP65 protection grade adapts to workshop dust‑proof environment. It collects digital and analog signals from field sensors, executes local control logic, and drives peripheral actuators through relay outputs.

Equipped with monochrome LCD screen and membrane keypad, operators can set parameters, view process data and check alarm status locally without connecting extra HMI device. RS‑485 Modbus‑RTU interface supports data exchange with PLC and upper monitoring system.

Built‑in hardware self‑diagnosis function detects power fault, channel abnormality and internal operation error, and displays alarm information on local screen for quick troubleshooting.

Compact panel‑mount structure saves cabinet internal space, convenient for on‑site maintenance and module replacement.

Widely applied in mechanical equipment transformation, power plant auxiliary control, process industry local control renovation projects.

It is important spare hardware for local control loop debugging and defective CMA120 controller panel replacement.