New Original ABB 07CR41 Controller Basic Unit

Product Details

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FAQs

Q1: What is the primary function of the ABB 07CR41?

It is a Controller Basic Unit that serves as the central processing element in an Advant Controller 31 system. It executes user programs (logic processing, data handling), manages communication over the CS31 System Bus, and coordinates connected I/O extension modules and remote units.

Q2: What programming software and cable are required?

The 07CR41 is programmed using AC31GRAF software. The required programming cable is the 07SK50 (shielded RS-232 cable with a built-in signal-conditioning PCB). A standard null-modem cable will not work and will fail the handshake at the COM1 configuration stage.

Q3: How many remote units can the 07CR41 manage?

As a CS31 bus master, the 07CR41 can manage up to 31 remote units. The CS31 protocol uses addresses from 0 to 61, and an extensible remote unit with analog extensions occupies two addresses.

Q4: Is the 07CR41 still in production?

No. The 07CR41 is a legacy/discontinued product and is no longer manufactured by ABB. It is available through aftermarket suppliers as new surplus or refurbished stock, typically with a 12-month warranty

Q5: What are the key technical considerations when replacing a 07CR41?

Verify the exact suffix (07CR41-C12, 07CR41-I22, etc.) and confirm the power supply configuration (24 VDC nominal). The unit uses relay outputs rated at 2 A per contact. When programming, ensure the COM1 parameters match the defaults (9600 baud, 8 data bits, no parity, RTS/CTS handshake).