Tutto sui PLC: la CPU
A practical engineering guide to PLC CPU operation, from deterministic scan cycles and I/O image tables to memory, communications, diagnostics, redundancy, processor sizing, and reliable system...
Functioning as a core architectural module within legacy plant control networks, the ABB GJR2237500R1 is an engineered printed circuit board developed for the Procontrol P13 system platform. This module, designated under the engineering code CT 370A (and alternative reference GJR2-237500-R1), processes critical signal paths and local bus coordination within utility-grade steam turbine, gas turbine, and generator control architectures. Built to rigorous power utility standards, it maintains signal integrity across backplane communication networks under challenging thermal and electromagnetic conditions.
| Parameter | Value / Specification |
|---|---|
| Manufacturer | ABB |
| Model / Article Number | GJR2237500R1 |
| Subcomponent Designation | CT 370A / GJR2-237500-R1 |
| Control System Platform | Procontrol P13 |
| Component Type | Printed Circuit Board (PCB) |
| Commodity Code (HS Code) | 85371091 |
| Shipping Weight (Calculated) | 0.54 kg |
| Package Dimensions (Calculated) | 235 mm x 180 mm x 25 mm |
The CT 370A module is highly revision-sensitive. When replacing older revisions of the GJR2-237500-R1 board, check for hardware-configured jumpers or DIP switches on the circuit board's surface. Ensure the hardware addressing on the replacement module matches the faulty board exactly to maintain the same slot addressing configuration on the P13 local bus.
Because this product is part of an obsolete DCS ecosystem, system engineers should monitor localized thermal performance. Older Procontrol racks can develop hot zones if cabinet cooling fans fail or are restricted. Ensure the standard spacing around the CT 370A rack mounting slot is clear to prevent thermal degradation of aging onboard passive components.
Always discharge any static electricity from your body or tools by utilizing a grounded ESD wrist strap before handling this module. Ensure the rack backplane connections are clean and free of oxides or debris before inserting the board. Never use excessive force; the module should slide smoothly into its corresponding guide rails and seat firmly into the backplane connectors.
CRITICAL WARNING
This module is NOT hot-swappable. Prior to removing or inserting the board, completely de-energize the subrack. Failure to isolate the power supply before handling this printed circuit board can result in severe backplane data bus corruption, permanent component damage, or unexpected system trips on adjacent operational control modules.
Isolate and verify de-energization of the target Procontrol P13 subrack.
Verify that the onboard jumper configurations of the replacement GJR2237500R1 match the settings of the original board being replaced.
Align the circuit board with the upper and lower slot guide rails in the card cage.
Gently push the card inward until the backplane connectors interface firmly, then secure any card retention latches or faceplate fasteners.
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Returns & Warranty






Functioning as a core architectural module within legacy plant control networks, the ABB GJR2237500R1 is an engineered printed circuit board developed for the Procontrol P13 system platform. This module, designated under the engineering code CT 370A (and alternative reference GJR2-237500-R1), processes critical signal paths and local bus coordination within utility-grade steam turbine, gas turbine, and generator control architectures. Built to rigorous power utility standards, it maintains signal integrity across backplane communication networks under challenging thermal and electromagnetic conditions.
| Parameter | Value / Specification |
|---|---|
| Manufacturer | ABB |
| Model / Article Number | GJR2237500R1 |
| Subcomponent Designation | CT 370A / GJR2-237500-R1 |
| Control System Platform | Procontrol P13 |
| Component Type | Printed Circuit Board (PCB) |
| Commodity Code (HS Code) | 85371091 |
| Shipping Weight (Calculated) | 0.54 kg |
| Package Dimensions (Calculated) | 235 mm x 180 mm x 25 mm |
The CT 370A module is highly revision-sensitive. When replacing older revisions of the GJR2-237500-R1 board, check for hardware-configured jumpers or DIP switches on the circuit board's surface. Ensure the hardware addressing on the replacement module matches the faulty board exactly to maintain the same slot addressing configuration on the P13 local bus.
Because this product is part of an obsolete DCS ecosystem, system engineers should monitor localized thermal performance. Older Procontrol racks can develop hot zones if cabinet cooling fans fail or are restricted. Ensure the standard spacing around the CT 370A rack mounting slot is clear to prevent thermal degradation of aging onboard passive components.
Always discharge any static electricity from your body or tools by utilizing a grounded ESD wrist strap before handling this module. Ensure the rack backplane connections are clean and free of oxides or debris before inserting the board. Never use excessive force; the module should slide smoothly into its corresponding guide rails and seat firmly into the backplane connectors.
CRITICAL WARNING
This module is NOT hot-swappable. Prior to removing or inserting the board, completely de-energize the subrack. Failure to isolate the power supply before handling this printed circuit board can result in severe backplane data bus corruption, permanent component damage, or unexpected system trips on adjacent operational control modules.
Isolate and verify de-energization of the target Procontrol P13 subrack.
Verify that the onboard jumper configurations of the replacement GJR2237500R1 match the settings of the original board being replaced.
Align the circuit board with the upper and lower slot guide rails in the card cage.
Gently push the card inward until the backplane connectors interface firmly, then secure any card retention latches or faceplate fasteners.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Sweden
|