Product Details
Configured for contact expansion in safety-instrumented systems, the Honeywell FF-SRE30812-C (FF-SRE30812 Safety Relay Expansion Module) provides direct physical/electrical execution for safety output multiplier circuits across industrial protection platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FF-SRE30812-C |
| Brand | Honeywell |
| Origin | USA / Germany |
| Weight | Approx. 0.35 kg |
| Dimensions | Standard 22.5 mm DIN-rail enclosure |
| Operating Temp | -10 deg C to +55 deg C |
| Power Consumption | Max. 3.5 W via 24 VDC bus |
| Operating Voltage | 24 VDC (+/-10%) |
| Output Contacts | 4 NO safety contacts, 1 NC auxiliary diagnostic contact |
| Safety Category | Up to SIL3 / PL e (system dependent) |
| Mounting Type | 35 mm DIN-rail |
4-20 mA HART Loop Protocol and Channel-to-Channel Isolation
The FF-SRE30812-C incorporates redundant positively guided (mechanically linked) relays housed behind channel-to-channel isolation barriers. The high galvanic isolation rating prevents field switching surges on safety output channels from feeding back into upstream 24 VDC control circuits or corrupting low-voltage analog lines executing 4-20 mA HART loop protocol telemetry across shared control bays.
Frequently Asked Questions
Q: Can the FF-SRE30812-C be operated as a standalone safety master relay?
A: No, the FF-SRE30812-C functions as a contact expansion module and must be controlled by a primary safety relay base unit or safety PLC output channel to execute safe state de-energization.
Q: What is the mechanical function of the NC auxiliary contact on the module?
A: The NC contact is mechanically linked to the NO safety contacts, serving as a feedback monitoring loop to the primary safety device to verify contact opening before allowing a system reset.
Field Installation Guidelines
- Snap the module securely onto a grounded 35 mm DIN-rail inside a dust-free control cabinet.
- De-energize all 24 VDC power and field load circuits before wiring input or output terminals.
- Wire the NC feedback contact into the reset loop of the master safety device to maintain SIL3 system integrity.
- Maintain a minimum clearance of 10 mm above and below the module for passive thermal dissipation.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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