ABB 07KR51 AC31 PLC CPU Module 1SBP260011R1001
Manufacturer: ABB
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Part Number: 07KR51 1SBP260011R1001 W3.9
Condition：New with Original Package
Product Type: CPU Processors
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
ABB 07KR51 AC31 PLC CPU Module
The ABB 07KR51-W3.6 (order code 1SBP260011R1001 W3.9), also cataloged as the 07KR51 CPU Module, operates as a dedicated hardware component for integrated control logic execution and local/distributed I/O management within Advant Controller 31 PLC platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 07KR51-W3.6 (Order Code: 1SBP260011R1001 W3.9) |
| Brand | ABB |
| Origin | Sweden |
| Module Type | PLC CPU Module |
| Integrated I/O | 8 digital inputs (24 VDC, PNP/NPN), 6 relay outputs (250 VAC / 2 A) |
| Program Memory | 34 KB user program memory |
| Data Storage | Non-volatile RAM |
| Communication Interfaces | RS232 (Modbus, ASCII), CS31 bus |
| Local Expansion Capacity | Up to 6 local modules (~110 digital or 36 analog I/O) |
| Distributed Expansion Capacity | Up to ~1000 I/O points via CS31 bus (maximum 31 nodes) |
| Power Consumption | Backplane drawn (24 VDC internal, load dependent) |
| Output Voltage (Uout) | 24 VDC |
| Dimensions | 120 x 93 x 84 mm |
| Weight | 0.8 kg |
| Operating Temp | 0 deg C to +55 deg C (horizontal), 0 deg C to +40 deg C (vertical) |
| Storage Temp | -40 deg C to +75 deg C |
| Humidity | Max 75% average, 95% occasional non-condensing |
Deterministic CS31 Bus Communication and Local I/O Density Scaling
The CPU utilizes the proprietary CS31 serial bus protocol to handle remote, deterministic I/O expansion up to 31 slave nodes, extending system capacity to approximately 1000 I/O points. Local I/O density scaling is executed via the physical integration of up to 6 local expansion modules directly connected to the CPU. The internal backplane bus interface coordinates data cycles across local digital and analog channels, preventing latency spikes during intensive execution tasks.
Frequently Asked Questions
Q: How do the mounting orientations affect the thermal ratings of the CPU?
A: Horizontal mounting on a DIN rail supports operation up to +55 deg C. Vertical mounting restricts passive convective heat dissipation, limiting the maximum operating temperature to +40 deg C.
Q: Can the 07KR51 real-time clock maintain its configuration after power loss?
A: Yes, the integrated real-time clock and program memory are supported by non-volatile storage to retain critical variables and timing data during unpowered states.
Q: Does the RS232 programming port support simultaneous HMI and software communication?
A: The physical RS232 port operates on a single active protocol line (ASCII or Modbus) and must be switched or multiplexed to handle alternate software tasks.
Field Installation Guidelines
- DIN-Rail Mounting Stability: Clip the module onto a standard 35 mm DIN rail, verifying that the physical metal locking tab snaps completely into place to prevent vibrational slippage.
- Wiring Separation: Route the low-voltage 24 VDC digital input cables and RS232 communication lines through dedicated trays separated from high-voltage 250 VAC relay output wiring.
- Shield Grounding: Connect the CS31 bus cable shields to the functional ground bar at the entry point of the cabinet to prevent high-frequency noise injection.
- Thermal Dissipation Spacing: Maintain a minimum clearances of 50 mm above and below the module to facilitate convective airflow.