Description

The Yaskawa JRMSI-B1026 is a 9-slot mounting base (rack backplane) engineered for the legacy Yaskawa Memocon-SC R84H programmable logic controller architecture. It provides the physical slot layout, mechanical guidance, and internal bus backplane trace routing required to interconnect the CPU, power supply module (such as the JRMSP-P8101), and associated I/O cards.

Technical Specifications

Commercial Terms & Availability

• Condition: Refurbished, Tested Working Surplus, or New Surplus (discontinued by OEM).
• Availability: Sourced through specialized legacy automation parts distributors; subject to limited regional inventory.
• Warranty: Varies by supplier (typically 30-day functional to 1-year replacement warranty).
• Pricing Note: Price is subject to current surplus market availability. Contact our technical sales desk for a formal quote and lead time verification.

Engineering & Integration Context

While backplanes like the JRMSI-B1026 are passive components containing primarily trace lines, connectors, and bus termination circuitry, they remain critical points of failure in aging installations due to mechanical wear and backplane connector pin oxidation.

Key Maintenance Considerations:

1. Backplane Connector Integrity: Inspect the multi-pin edge connectors inside each slot prior to inserting modules. Bent pins or dust accumulation can cause intermittent communication dropouts between the CPU and I/O cards.
2. Slot Allocation: When laying out cards on the 9-slot chassis, ensure power-hungry modules and high-density I/O cards are distributed properly relative to the power supply slot to prevent localized voltage drop on the backplane traces.
3. Chassis Grounding: Verify that the mounting base grounding lug is tied cleanly to the enclosure subpanel ground reference to mitigate electrical noise interference in high-EMI industrial environments.

Frequently Asked Questions

Q: Are the module slot connectors on the JRMSI-B1026 keyed to prevent incorrect module insertion?

A: Yes, mechanical keying provisions are built into the Memocon-SC rack slots to prevent inserting incompatible module types into designated CPU or power supply positions, though care should still be taken with standard I/O cards.

Q: Can I use this 9-slot base to expand an existing smaller Memocon-SC rack configuration?

A: Transitioning from a smaller rack to the 9-slot JRMSI-B1026 requires physical panel space modification and verification that your current power supply unit can handle the total current draw of additional I/O modules.