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3. Key Technical Specifications
The Woodward 5501-376 Analog Combination Field Termination Module (FTM) acts as the rugged interface bridge between field-installed analog transmitters/actuators and VME-based MicroNet control cards.
| Parameter | Value |
| Part Number | 5501-376 |
| Manufacturer | Woodward |
| System Compatibility | MicroNet Simplex, Dual, and TMR Architectures |
| I/O Capacity | Interfaces 24 Analog Inputs (4–20 mA/0–5 V) and 8 Analog Outputs (4–20 mA) |
| Cable Connection | Dual High-Density D-Sub Connectors to MicroNet I/O Module |
| Field Wiring | Screw-cage barrier block terminals (12 to 24 AWG wire capacity) |
| Mounting Style | Standard 35 mm DIN-rail mounting base |
| Isolation | Channel-to-channel and field-to-chassis surge suppression |
| Operating Temperature | -40°C to +85°C |
| Dimensions | Standard MicroNet FTM footprint (approx. 12.5″ length) |
4. Product Introduction & Supply Chain Strategy
The Woodward 5501-376 is an Analog Combo Field Termination Module designed to organize, suppress noise, and route analog field signals directly into Woodward MicroNet digital control systems. By consolidating 24 analog inputs (pressure, temperature, valve position) and 8 analog outputs (actuator positioning commands) onto a single DIN-rail terminal assembly, it eliminates loose cabinet wiring and reduces system installation footprint.
Carrying a spare 5501-376 in your inventory as New Surplus is a critical insurance policy against unexpected field wiring faults. Because field termination blocks house delicate onboard signal isolation and surge suppression networks, an electrical surge or severe field short can fry terminal tracks, disabling multiple analog loops simultaneously. Purchasing an uninstalled, original New Surplus 5501-376 guarantees fast DIN-rail replacement without long OEM factory lead times or the risk of broken housing clips and oxidized terminal screws common to second-hand parts.
5501-376
5501-376
5. Installation & Configuration Guide
Critical Safety Warning
External loop power (24 VDC) routed through terminal blocks can cause short circuits if stripped field leads touch the mounting rail. Always de-energize transmitter loop power supplies before disconnecting or reconnecting field wiring to the 5501-376 assembly.
1.Pre-Installation & Wiring Documentation:Prerequisite.
Label all incoming field wire pairs according to your plant’s loop diagrams. Connect a grounded ESD wrist strap before handling the internal connector interfaces. Take clear photos of existing terminal block wire connections.
2.Loop Power Disconnection & Harness Extraction:Power & Isolation.
Switch off external 24 VDC instrument power supplies powering the analog loops. Unbolt and disconnect the high-density shield cables linking the 5501-376 to the MicroNet rack module. Carefully unscrew field wiring leads from the terminal block cage clamps.
3.DIN-Rail Mounting & Harness Attachment:Hardware Swap.
Release the DIN-rail locking feet on the old unit and remove it. Snap the replacement 5501-376 onto the 35 mm DIN rail. Reattach the high-density interconnect cables from the MicroNet rack, ensuring side locking screws are fully tightened.
4.Field Wiring & Signal Check:Re-wiring & Verification.
Reconnect field wire leads into their designated terminal positions based on your wiring schematics. Re-energize 24 VDC instrument loop power. Verify 4–20 mA loop current values in AppManager or Coder diagnostics to confirm signal continuity.
6. Firmware/Software Versions & Upgrade Notes
- Software Compatibility: The 5501-376 is a passive/semipassive hardware interface board; it contains no programmable onboard CPU firmware and requires no software flashing.
- I/O Card Pairing: Must be paired with the corresponding Woodward MicroNet Analog Combo I/O Module (e.g., 5466-series cards) and matching Woodward pre-fabricated high-density cables.
- Hardware Revisions: Verify that terminal numbering and jumper settings (if configured for voltage vs. current inputs) match the previous revision card layout before landing wires.
- Wiring Caution: Never mix 125 VDC discrete signal lines with the 4–20 mA analog terminal channels on this board. Overvoltage will permanently damage onboard filter networks.
7. Frequently Asked Questions (FAQ)
Q: Is this Woodward 5501-376 terminal block genuinely new, or is it pulled from a used control cabinet?
A: This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability.
Q: Why should I purchase New Surplus instead of a cheaper refurbished termination module?
A: Refurbished termination blocks often suffer from stripped screw terminals, hair-line copper track fractures, and degraded surge suppression components caused by environmental heat. Buying New Surplus ensures intact terminal clamps, clean contacts, and total signal integrity.
Q: Does the 5501-376 include the interconnecting cables to the MicroNet rack?
A: The 5501-376 module is sold as the terminal block assembly itself. High-density molded cables are typically ordered separately based on the required cable length between your field cabinet and the MicroNet chassis.
Q: Can this terminal block supply 24 VDC power to 2-wire field transmitters?
A: Yes. The 5501-376 includes dedicated power distribution terminals designed to route external 24 VDC loop power to 2-wire current transmitters when wired according to Woodward installation schematics.
Q: What warranty and quality guarantees come with this unit?
A: Every 5501-376 unit is shipped in anti-static protective packaging and includes a full QC inspection report along with a 1-year full replacement warranty.
