ABB 07CR42/07CT42 Central Unit

ABB 07CR42/07CT42 Central Unit

Product overview

07CR42 and 07CT42 are expandable independent central units in the AC 31 automation system, suitable for various applications with input/output points ranging from 14 to 110. Its design makes it easy for both beginners and experienced automation users to operate, with components installed close to sensors/actuators. It supports integration with other automation systems in the enterprise through communication interfaces such as MODBUS and ASCII, expanding application possibilities.

Basic configuration rules

The AC 31 system must include a central unit, and both 07CR42 and 07CT42 integrate a certain number of binary inputs/outputs and analog inputs.

The number of inputs/outputs can be increased by adding input/output expansion units directly connected to the central unit, supporting up to 6 binary or analog expansion units.

Product model and reference information

07 CR 42-24VDC: Includes 8 isolated 24V DC inputs, 6 250V AC/2A relay outputs, 3 analog inputs (2 ± 10V voltage inputs and 1 temperature input), with RS232 interface, 24V DC power supply, 1SBP260023R1001

07 CR 42-120/230VAC: The input and output configuration is the same as the 24VDC version, with a power supply of 120/230V AC and a 24V DC output for input power supply. 1SBP260024R1001

07 CT 42-24VDC: Includes 8 isolated 24V DC inputs, 6 24V DC/0.5A transistor outputs, 3 analog inputs (2 ± 10V voltage inputs and 1 temperature input), with RS232 interface, 24V DC power supply, 1SBP260025R1001

Technical specifications

General characteristics

Characteristics: 07 CR 42 24V DC 07 CT 42 24V DC 07 CR 42 120/230V AC

I/O quantity

-Integrated binary input 8 8 8

-Integrated binary output 6 6 6

-Integrated analog input 3 3 3

-Analog potentiometer 2 2 2

-Maximum number of expansion units per central unit 6 6 6

-Maximum binary input number 104 104 104

-Maximum binary output 54 54 54

-Maximum number of analog inputs 51 51 51

-Maximum analog output 12 12 12

Interface without CS 31 interface, 1 RS232 interface (programming, MODBUS or ASCII) without CS 31 interface, 1 RS232 interface (programming, MODBUS or ASCII) without CS 31 interface, 1 RS232 interface (programming, MODBUS or ASCII)

Memory

-User program memory size (without ONLINE), 17000 words (approximately 8.5k instructions), 17000 words (approximately 8.5k instructions), 17000 words (approximately 8.5k instructions)

-User program memory size (with ONLINE), 8000 words (approximately 4k instructions), 8000 words (approximately 4k instructions), 8000 words (approximately 4k instructions)

-User program memory and constants, flash EEPROM, flash EEPROM, flash EEPROM

-Data memory SRAM、SRAM、SRAM

-Data backup, with battery, can be backed up for 20 days at 25 ° C, fully charged in 12 hours, with battery, can be backed up for 20 days at 25 ° C, fully charged in 12 hours, with battery, at 25 ° C