The ABB CMA121 (3DDE300401) is a Synpol D series DC power supply module engineered to provide reliable voltage regulation for industrial control systems. This compact unit is designed to convert nominal 24 V DC input power into a stable 5 V DC output, supporting critical operational requirements in automated environments.
Features
Optimized for Synpol D system compatibility.
Provides a stable 5 V DC output with high precision.
Integrated isolation between input and output stages.
Compact form factor suitable for standard industrial cabinets.
Robust design for operation within a wide temperature range.
Technical Specifications
Model
CMA121 / 3DDE300401
Input Voltage Range
18 V DC to 32 V DC (24 V DC Nominal)
Output Voltage
5 V DC +/- 1%
Max Output Current
4 A
Power Output
Up to 20 W
Ripple and Noise
< 50 mV peak-to-peak
Isolation
500 V DC (Input to Output)
Operating Temperature
0 degC to +60 degC
Storage Temperature
-40 degC to +85 degC
Relative Humidity
5% to 95% (non-condensing)
Installation Guidelines
Ensure the module is installed in a clean, dry environment free from excessive dust or corrosive gases.
Verify that the input voltage remains within the specified 18-32 V DC range before powering the unit.
Ensure proper ventilation around the module to maintain operating temperatures within the 0 to 60 degC range.
Use appropriate wire gauges for the power terminals to minimize voltage drop and heating.
Always disconnect power before inserting or removing the module from the rack to prevent electrical damage.
Ensure all chassis grounding connections are secure to mitigate electromagnetic interference (EMI).
FAQ
What is the primary function of the ABB CMA121 module? The CMA121 is a DC-to-DC power supply module designed to deliver a steady 5 V DC output from a 24 V DC source for ABB Synpol D applications.
Can this module operate at extreme temperatures? The module is rated for an operating temperature range of 0 degC to +60 degC. For storage, it can withstand temperatures between -40 degC and +85 degC.
What is the maximum power output for this unit? The CMA121 supports a power output of up to 20 W with a maximum current capacity of 4 A.
