Honeywell 05701-A-0327 – Double SPCO Relay Output Card | TDC-3000 DCS Platform
Engineering Background
The Honeywell 05701-A-0327 is a Double SPCO (Single Pole Change Over) Relay Card designed for use within Honeywell’s TDC-3000 Distributed Control System architecture. This module provides reliable discrete output switching capability for process control applications in refining, petrochemical, power generation, and continuous manufacturing environments.
Product Positioning
As a verified surplus and refurbished automation component supplier, Konmask.com sources the 05701-A-0327 directly from decommissioned plant inventories and authorized distributors. Each unit undergoes functional inspection prior to dispatch, making it the preferred procurement channel for MRO engineers maintaining legacy TDC-3000 infrastructure.
Complete Technical Specifications
| Part Number | 05701-A-0327 |
| Manufacturer | Honeywell Process Solutions |
| Module Type | Double SPCO Relay Output Card |
| Platform Compatibility | Honeywell TDC-3000 DCS |
| Contact Configuration | SPCO (Single Pole Change Over) × 2 |
| Output Type | Discrete relay contact output |
| HS Code | 853710 |
| Weight | 1,560 g (approx.) |
| Condition | Surplus / Refurbished – Functionally Tested |
| Warranty | 90-day functional warranty |
Proven Application Environments
- Petroleum refining and upstream oil & gas process control
- Petrochemical and chemical plant DCS relay output loops
- Power generation plant control systems (coal, gas, nuclear auxiliary)
- Pulp & paper and continuous process manufacturing
- Water treatment and utility SCADA/DCS hybrid architectures
- MRO replacement for aging TDC-3000 relay output cards
Engineering Advantages
- Dual-channel SPCO design – two independent relay contacts per card, maximizing I/O density in existing TDC-3000 cabinets
- Drop-in replacement – fully backward-compatible with original Honeywell TDC-3000 backplane and wiring terminations
- Surplus availability – sourced from decommissioned plant stock, providing cost-effective alternative to new OEM pricing
- Pre-shipment functional test – each unit verified for relay actuation, contact continuity, and card communication
- Immediate dispatch – in-stock units ship within 1–3 business days globally
System Architecture & Signal Flow
Within the TDC-3000 architecture, the 05701-A-0327 resides in the High-Performance Process Manager (HPPM) or compatible I/O subsystem. The card receives discrete output commands from the controller via the backplane bus and actuates the corresponding SPCO relay contacts. Each relay provides a normally-open (NO), normally-closed (NC), and common (COM) terminal, enabling both energize-to-trip and de-energize-to-trip wiring configurations. Signal flow: Controller → Backplane Bus → Relay Driver Circuit → SPCO Contact Output → Field Device.
Sourcing & Quality Verification
- All units sourced from traceable plant decommissions or authorized surplus channels
- Visual inspection: PCB integrity, connector condition, label legibility
- Functional test: relay coil actuation, contact resistance measurement, backplane communication check
- Anti-static packaging with humidity indicator card for international shipment
- Certificate of conformance available upon request for regulated industries
Procurement Process
- Submit your RFQ via support@konmask.com or WhatsApp +0086 19859288691
- Receive stock confirmation and proforma invoice within 4 business hours
- Payment via T/T, PayPal, or trade assurance
- Dispatch within 1–3 business days; DHL / FedEx / UPS express available
- Tracking number and commercial invoice provided for customs clearance
Technical FAQ
Q: Is the 05701-A-0327 compatible with TDC-2000 systems?
A: This card is designed for TDC-3000 architecture. Compatibility with TDC-2000 backplanes is not confirmed — please consult your system documentation or contact our engineers before ordering.
Q: Can you provide a test report?
A: Yes. A functional test report is available upon request at no additional charge for orders of 2+ units.
Q: What is the lead time for bulk orders (10+ units)?
A: Lead time for bulk quantities depends on current stock levels. Submit an RFQ and we will respond within 1 business day with availability and pricing.
Q: Do you accept returns?
A: Yes, within 30 days of receipt for units that fail to function as described, subject to our standard RMA process.
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Contact: support@konmask.com | +0086 19859288691
