The ABB 07DC91C is the 07 DC 91 digital I/O module, part number GJR5251400R0202, from the ABB Advant Controller 31 (AC31) family. It is a remote I/O module designed for the CS31 system bus and operates from a 24 V DC supply. The module provides 16 digital inputs, 8 transistor outputs, and 8 configurable input/output channels.

The transistor outputs are rated for 24 V DC / 0.5 A and include overload and short-circuit protection. The eight configurable channels can be assigned as inputs, outputs, or readable outputs according to the application configuration.

Product Datasheet

The published ABB documentation specifies 120 × 140 × 85 mm mechanical dimensions and approximately 450 g weight, with DIN-rail or screw mounting.

Common Questions & Answers

Q1: What is ABB 07DC91C?
A: It is a 07 DC 91 digital input/output module for ABB Advant Controller 31 systems.

Q2: How many I/O channels does it have?
A: It provides 16 digital inputs, 8 digital outputs, and 8 configurable I/O channels.

Q3: What communication bus does it use?
A: The module operates as a remote unit on the ABB CS31 system bus.

Q4: What is the power supply?
A: The module uses a 24 V DC operating supply.

Q5: What is the output capacity?
A: The transistor outputs are specified for 24 V DC with a rated load capacity of 0.5 A and protection against overload and short circuits.

Q6: Can the eight configurable channels be used as inputs or outputs?
A: Yes. Depending on the configuration, the eight channels can function as inputs, outputs, or readable outputs.

Q7: Is 07DC91C the same as 07DC91?
A: 07DC91C is commonly used as the complete ordering designation associated with 07 DC 91 / GJR5251400R0202. Verify the complete part number and hardware revision when replacing an installed unit.

Q8: What should be checked before replacement?
A: Verify the GJR5251400R0202 part number, CS31 bus configuration, I/O addressing, terminal wiring, supply voltage, and hardware revision before installation.