Overview
Configured for interfacing 32 discrete field signals in Honeywell distributed control systems, the Honeywell MC-TDID52 51304441-275 (MC-TDID52 Digital Input Field Termination Assembly) provides direct electrical termination between field devices and associated control system input circuitry. The assembly accepts 24 VDC nominal discrete signals, supports defined ON/OFF voltage ranges, and uses fixed-screw terminals for field wiring.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | MC-TDID52 51304441-275 |
| Base Model | MC-TDID52 |
| Brand | Honeywell |
| Product Type | Digital Input Field Termination Assembly |
| Catalog / Part Number | 51304441-275 |
| Number of Channels | 32 channels |
| Input Signal Type | Digital ON/OFF |
| Nominal Input Voltage | 24 VDC |
| Logic Low (OFF) | 0 to 5 VDC |
| Logic High (ON) | 11 to 30 VDC |
| Termination Type | Fixed-screw terminals |
| Status Indication | Integrated LED channel status indicators |
| Mounting | DIN rail / panel mounting |
| Operating Temp | -40 to +85 deg C |
| Origin | United States |
DCS Field Signal Interface Characteristics
The MC-TDID52 51304441-275 performs physical field termination for discrete process signals before those signals reach the associated Honeywell control system input circuitry. Therefore, the assembly supports organized point-to-point wiring for 32 digital channels.
Honeywell DCS architectures commonly combine field termination hardware with process I/O systems that support analog and digital instrumentation. Depending on the connected I/O architecture, signal segregation and channel handling remain functions of the complete I/O system rather than characteristics that should be assigned solely to the MC-TDID52 field termination assembly.
For this digital input application, the specified voltage thresholds determine the OFF and ON operating states. Consequently, field devices and external wiring should provide voltage levels within the stated input ranges.
Frequently Asked Questions
Q: How many discrete input channels does the Honeywell MC-TDID52 51304441-275 support?
A: The assembly provides termination for 32 digital ON/OFF input channels.
Q: What input voltage levels define the OFF and ON states?
A: Logic Low (OFF) is specified as 0 to 5 VDC, while Logic High (ON) is specified as 11 to 30 VDC.
Q: Can the MC-TDID52 51304441-275 power consumption be determined from the available specifications?
A: No. The provided technical data does not specify power consumption. Therefore, no numerical power consumption value should be assigned without manufacturer documentation for the associated installation.
Field Installation Guidelines
- Mount the MC-TDID52 51304441-275 on the specified DIN rail or panel location according to the installed control cabinet arrangement.
- Verify the part number and base model before connecting field wiring.
- Isolate external field power before installing or removing field conductors.
- Terminate each conductor securely in the corresponding fixed-screw terminal.
- Keep digital input wiring separated from high-current switching conductors where practical.
- Route shielded cables according to the control system grounding design and site electrical standards.
- Verify the external signal voltage before energizing the input circuit.
- Confirm that OFF-state and ON-state voltages remain within the specified input ranges.
- Inspect channel LED indications after commissioning to confirm the physical field signal state.
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