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07 KR 91

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07 KR 91 is a Procontic CS31 CPU with integral 24 V DC inputs, relay outputs, serial communication, and an RS-485 CS31 system bus.
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Technical specifications for 07 KR 91

  • Manufacturer:
    ABB
  • Part Number:
    07 KR 91
  • Product Family:
    ABB Procontic
  • Product Type:
    Procontic CS31 Central Processing Unit
  • Stock:
    1
  • Program memory:
    7 K Flash EPROM
  • Digital inputs:
    Twenty 24 V DC inputs
  • Relay outputs:
    Twelve 2 A relay outputs
  • Serial interface:
    Programmable RS-232 port
  • System bus:
    RS-485 CS31
  • Integrated functions:
    Real-time clock, 10 kHz counter, PID, and data handling
  • Tariff Code:
    8473309000
  • Country of origin:
    Sweden
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals CPU and I/O Power and Interfaces Program and CS31 Application
  • 115/230 V AC R101 supply version
  • 20 binary inputs and 12 binary relay outputs
  • CS31 central unit with COM1 and a 10 kHz counting input

07 KR 91 GJR5250000R0101 is an ABB Procontic CS31 central processing unit in the R101 supply version.

The unit combines 20 binary inputs, 12 binary relay outputs, one counting input for frequencies up to 10 kHz, a CS31 system bus interface, and a COM1 serial interface.

Match the complete order code, supply voltage, program backup, field wiring, and CS31 project before replacement.

Availability, condition, price, and shipping time for 07 KR 91 GJR5250000R0101 are confirmed during quotation.

ABB 07KR91 GJR5250000R0101 ABB Procontic Manuals, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • 20 binary inputs for local field signals
  • 12 binary relay outputs for control circuits
  • One counting input for frequencies up to 10 kHz
  • R101 version with 115/230 V AC supply
  • 24 V output for supplying the unit's own binary inputs
  • COM1 programmable serial interface with ASCII peripheral mode
  • User program capacity of up to 7 k instructions
  • Stand-alone, CS31 master, or CS31 slave operation
  • Program backup, real-time clock, battery support, and system-bus diagnostics
  • Central control in ABB Procontic CS31 automation systems
  • Local binary I/O and frequency-counting tasks in machine sequences
  • Programming, serial peripheral access, and decentralized CS31 expansion
Description
07 KR 91 GJR5250000R0101 is an ABB Procontic CS31 central processing unit in the R101 supply version.

The official ABB hardware description specifies 115/230 V AC supply, 20 binary inputs, 12 binary relay outputs, one counting input for frequencies up to 10 kHz, a CS31 system bus interface, a COM1 serial interface, and capacity for a user program of up to 7 k instructions.

Before replacement, match the complete order code and supply voltage, back up the user program, record COM1 and CS31 settings, and verify every field connection.
Alternative Names
07KR91 07 KR91 07KR 91 GJR 525 0000 R0252 GJR5250000R0252 GJR 525 0000 R0202 GJR5250000R0202
Technical notes
07 KR 91: verify the installed supply variant, ABB order code, CS31 bus wiring, relay load wiring, RS-232 configuration, and backed-up program before replacement; an incorrect supply or configuration can prevent startup.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Which supply version is represented by ABB 07 KR 91 GJR5250000R0101?
ABB identifies the R101 version of 07 KR 91 with a 115/230 V AC supply. Confirm the original nameplate and complete order code before replacement.
What local I/O is provided by ABB 07 KR 91 GJR5250000R0101?
The central unit provides 20 binary inputs, 12 binary relay outputs, and one counting input for frequencies up to 10 kHz.
How is COM1 used on ABB 07 KR 91 GJR5250000R0101?
COM1 is the serial interface used for programming and can be configured as an ASCII interface for compatible peripheral devices.
Can ABB 07 KR 91 GJR5250000R0101 operate without a CS31 network?
Yes. ABB documents the central unit for stand-alone operation as well as CS31 master or slave operation; the selected mode must match the project.
What must be preserved before replacing ABB 07 KR 91 GJR5250000R0101?
Back up the user program, record the COM1 settings, identify the CS31 bus arrangement, and document every input and relay-output connection.
What should be checked if the replacement ABB 07 KR 91 GJR5250000R0101 does not start?
Check the 115/230 V AC supply selection, RUN/STOP state, program backup, battery condition, terminal wiring, and CS31 configuration before troubleshooting further.
How should ABB 07 KR 91 GJR5250000R0101 be commissioned after replacement?
Restore the verified program, test the 20 inputs and relay outputs, confirm the counting input, check COM1 communication and CS31 diagnostics, then run the approved machine sequence.