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InquiryFoxboro RH923DD Cable Assembly
The Foxboro RH923DD, also cataloged as the RH923DD alarm status relay output cable, serves as a dedicated SPDT relay output harness for interfacing alarm contacts from Foxboro 200 Series power modules to external indicators or control systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | RH923DD |
| Brand | Foxboro (Schneider Electric) |
| Origin | USA |
| Weight | Not specified |
| Dimensions | Cable length ~1.8 m (6 ft) |
| Operating Temp | 0 to +60 deg C (typical industrial rating) |
| Core Performance | SPDT relay output, DIN-rail terminal block termination |
FOUNDATION Fieldbus Connectivity and Channel Isolation
The RH923DD cable assembly provides Form C relay logic (NC, NO, COM) for alarm status signaling. It is designed to integrate with Foxboro FPS400-24 power modules, routing alarm contacts to external monitoring systems. Channel isolation is maintained through galvanic separation of relay contacts, ensuring deterministic signaling under industrial noise conditions. Cold junction compensation (CJC) is not applicable, but the assembly supports robust signal routing with minimal interference.
Frequently Asked Questions
Q: What relay contact configuration is provided? A: SPDT contacts are available, including NC, NO, and COM terminals.
Q: Can the RH923DD be used in hazardous areas? A: Yes, it is certified for Class I, Division 2, Groups A-D and Zone 2 hazardous locations, temperature class T4.
Q: Is there a replacement option for longer cable runs? A: The RH926CF (2.1 m / 7 ft) can be used as an alternative in new system designs.
Field Installation Guidelines
- Mount the DIN-rail terminal block securely within the designated enclosure.
- Route the 1.8 m cable with minimal bending radius to avoid conductor stress.
- Ensure shielded wiring is grounded at a single point to prevent circulating currents.
- Connect relay outputs to external indicators or shutdown circuits according to Form C logic.
- Verify environmental conditions meet G3 corrosion resistance certification before commissioning.
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