ABB 07 KR 91 Central Unit with Max. 28 kB User Program

Brief Description

The ABB 07 KR 91 central unit is a versatile automation device designed to function as:

• Bus Master: In the decentralized automation system ABB Procontic CS31.
• Slave (Remote Processor): In the decentralized automation system ABB Procontic CS31.
• Stand-alone Central Unit: For independent operation.

Main Features

Binary Inputs/Outputs

• 20 binary inputs.
• 12 binary relay outputs.

High-Speed Counting

• 1 counting input for frequencies up to 10 kHz.

System Bus Expansion

• 1 CS31 system bus interface for adding up to 31 remote modules.
• Supports 744 binary inputs, 496 binary outputs, 96 analog input channels, and 48 analog output channels.

Serial Interface COM1

• Default as programming interface.
• Configurable as an ASCII interface for peripheral devices (e.g., MMC devices).

Real-Time Clock

• Integrated with a resolution of 1 second.

Diagnostic Functions

• Self-diagnosis of the central unit.
• Diagnosis of the ABB Procontic CS31 system bus and connected modules.

User-Friendly Design

• LEDs display binary input/output signals, operating conditions, and error messages.
• Detachable screw-type terminal blocks for easy installation.
• Detachable front-side plastic sheet for labeling signal names.
• Fastening via screws or DIN rail mounting.

Backup Capabilities (with 07 LE 90 Lithium Battery)

• Stores and backs up the user program in RAM.
• Retains additional RAM data (e.g., flag statuses).
• Maintains time and date (real-time clock).

RUN/STOP Switch

• For starting and stopping program execution.

General Data

Input/Output

• Number of Binary Inputs: 20.
• Number of Binary Relay Outputs: 12.

System Expansion via CS31 System Bus

• Up to 744 binary inputs.
• Up to 496 binary outputs.
• Up to 96 analog input channels.
• Up to 48 analog output channels.
• Maximum of 31 remote modules.

Memory

• Flash EPROM: 32 kB (30 kB for user program).
• RAM: 256 kB (30 kB for user program with online programming).

Processing Speed

• Binary operations: Typical 0.4–0.6 ms/kB program.
• Mixed operations (65% bits, 35% words): Typical 0.7 ms/kB program.

Timer and Counter

• Software Timers: Maximum of 80 active simultaneously, with delays ranging from 5 ms to 24.8 days.
• Up/Down Counter Software Blocks: Unlimited.

Power Supply

• 07 KR 91 R202:
  • Mains Voltage: 115 V AC or 230 V AC.
  • Power Dissipation: Max. 20 W.
• 07 KR 91 R252:
  • Rated Voltage: 24 V DC.
  • Current Consumption: Max. 0.4 A (plus output current through terminal 34).
  • Protection: Reversed terminal connection protection.

Ordering Data

• Central Unit 07 KR 91 R202: Order No. GJR5 2500 00 R202.
• Central Unit 07 KR 91 R252: Order No. GJR5 2500 00 R252.

Scope of Delivery

• Central Unit 07 KR 91 R202 or R252.
• 2 nine-pole terminal blocks.
• 5 five-pole terminal blocks.
• 2 three-pole terminal blocks.
• Safety and mounting instructions.

Contact Us

• Phone: +86-15915488782
• Email: [email protected]
• WhatsApp: +8615915488782
• Business Hours: 24/7 service
• Address: Unit 601, Powerlong International Center, No. 1599 Luling Road, Siming District, Xiamen City, Fujian, China