The ABB 07CR41 is a basic controller unit from the Advant Controller 31 (AC31) Series 40 PLC family. ABB documentation identifies 07CR41 as part of the Series 40/50 CPU family, while ABB application documentation lists it with product reference 1SBN260020R1001.

The unit provides 8 digital inputs and 6 relay outputs and is designed for industrial automation systems using the AC31 architecture. The Series 40/50 platform supports local I/O expansion, with up to six local digital or analog extension units.

Product Datasheet

ABB’s dimensional documentation gives 120 × 93 × 84 mm for the 07CR41/42, 07CT41/42, 07KR51 and 07KT51 CPU group, with 35 mm DIN-rail or screw mounting.

Common Questions & Answers

Q: What is ABB 07CR41?
A: It is an Advant Controller 31 (AC31) Series 40 basic PLC unit intended for industrial control applications.

Q: How many I/O points does it have?
A: The commonly documented configuration provides 8 digital inputs and 6 relay outputs.

Q: What power supply does the 07CR41 use?
A: The 07CR41 configuration referenced by ABB uses a 24 V DC power supply.

Q: Can additional I/O be connected?
A: Yes. The AC31 Series 40/50 architecture supports local I/O expansion, with up to six central extension units according to the operating documentation.

Q: What communication system does it use?
A: AC31 Series 40/50 controllers support the CS31 system architecture and provide serial communication functions including programming and integrated MODBUS/ASCII communication depending on configuration.

Q: What should be checked before replacement?
A: Verify the exact 07CR41 variant, product/order number, power supply, I/O configuration, firmware/program compatibility, expansion modules, and communication configuration before installation.