Product Details
Configured for power distribution management in System 57 sub-rack enclosures, the Honeywell 05701-A-0325 (05701-A-0325) DC Input Card provides direct physical power entry and routing for rack-mounted electronics. The module accepts a nominal 24 V DC supply, distributing power via the sub-rack backplane while incorporating integrated fuse protection, RFI filtering, and reverse polarity protection for the connected control instrumentation.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 05701-A-0325 |
| Brand | Honeywell |
| Origin | Not specified |
| Weight | 2.0 kg |
| Dimensions | Consult System 57 technical manual |
| Operating Temp | Consult System 57 technical manual |
| Power Consumption | N/A (Power distribution component) |
| Input Type | Nominal 24 V DC |
Channel-to-Channel Isolation
The 05701-A-0325 utilizes internal diode-based isolation to separate the primary power supply unit (PSU) and auxiliary (AUX) standby battery inputs. This isolation architecture ensures that a voltage drop or fault in the primary supply does not back-feed into the battery backup circuit. Furthermore, the module provides RFI filtering to suppress electromagnetic noise, maintaining a clean power rail for the sensitive instrumentation across the backplane. This power conditioning is necessary to preserve the signal integrity of the control modules and prevent transient-induced errors during power state transitions.
Frequently Asked Questions
Q: Can this card be hot-swapped while the sub-rack backplane is under load?
A: No. The card must be removed or inserted only when the rack is de-energized to prevent arcing at the terminal block (TB1) or backplane connector, which could lead to power surges.
Q: How is backplane current managed when multiple catalytic cards are present?
A: In configurations exceeding eight 5704 Catalytic Cards, current load should be distributed by powering Control Cards through their associated Quad Relay Interface Cards, while using the 05701-A-0325 solely for Engineering Card power.
Field Installation Guidelines
- Terminal Block Usage: The card features a two-part terminal block (TB1). Utilize this modular design to disconnect field wiring as a block, minimizing the need to remove individual wires during maintenance.
- Stand-by Battery Connection: Auxiliary connections are provided for backup battery supplies. Ensure that the backup voltage polarity matches the primary supply to prevent diode conduction issues.
- Fuse Inspection: The card incorporates an onboard fuse for overcurrent protection. Verify fuse continuity during power-up or following a rack-wide power loss.
- Wiring Separation: Ensure that DC supply cables are routed separately from signal lines to prevent induced electromagnetic interference on the instrumentation bus.
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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