MC-TDIY22 Honeywell Digital Input FTA | New & Original Stock
Manufacturer: Honeywell
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Part Number: MC-TDIY22 51204160-175
Condition：New with Original Package
Product Type: Digital Input Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Honeywell MC-TDIY22 Experion PKS Digital Input FTA Module
Configured for discrete signal collection in Experion PKS networks, the Honeywell MC-TDIY22 (MC-TDIY22 Digital Input Module) provides direct physical/electrical execution. The hardware interface functions as a 32-channel Field Termination Assembly (FTA) that acquires binary state transitions from field switches, sensors, and contact points, converting physical contact breaks into localized electronic status packets.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | MC-TDIY22 (Part Number: 51204160-175) |
| Brand | Honeywell |
| Origin | United States |
| Weight | 0.308 kg |
| Dimensions | 160 mm x 100 mm x 30 mm |
| Operating Temp | -40 to 70 deg C |
| Power Consumption | Sourced via backplane interface (5 mA nominal per input channel) |
| Input Density | 32 discrete digital input channels |
| Nominal Input Voltage | 24 VDC |
| Isolation Type | Optical isolation between channels and internal system bus |
| Form Factor | Compact rack-mount / Field Termination Assembly layout |
| Storage Temp | -50 to 85 deg C |
| Humidity Range | 5% to 95% non-condensing relative humidity |
| Certifications | CE, UL508, CSA, TUV compliant |
Process Control and Channel-to-Channel Isolation
The MC-TDIY22 coordinates discrete signal acquisition across its high-density termination layout by deploying optoelectronic decoupling pairs. While analog instrumentation tracks fluid variables over the 4-20 mA HART loop protocol, this digital module isolates binary switching logic from control room backplane hardware through strict channel-to-channel isolation arrays. This design blocks inductive transients, high-voltage field spikes, and ground potential differences from jumping the primary logic boundary, eliminating cross-talk and protecting the central processor loops from noise during contact bouncing.
Frequently Asked Questions
Q: Does the MC-TDIY22 assembly allow live replacement or hot-swapping while the host I/O rack is online?
A: No. Removing or seating this Field Termination Assembly while power is applied to the 24 VDC input circuits can cause terminal arcing and signal disruptions on adjacent modules. Power to the field loop and system interface cables must be isolated prior to replacement.
Q: How is the 24 VDC wet supply monitored for faults across the 32 input channels?
A: The module relies on the host controller software to verify input circuit loop status. If field loop voltage drops below the designated threshold, the channel registers an open or un-wet contact state, protecting downstream control algorithms from corrupted binary tracking.
Field Installation Guidelines
- FTA Chassis Rail Grounding: Mount the assembly firmly onto the designated cabinet chassis plate or DIN-rail structure. Verify a low-resistance metallic connection between the module framing ground points and the primary cabinet master earth bus.
- Signal Wire Separation: Route all 24 VDC field contact wires in dedicated, low-voltage wire trays. Ensure complete separation from high-voltage AC motor conductors and heavy inductive ignition lines to suppress electromagnetic noise coupling.
- Shield Continuity Management: Connect external multi-conductor field cable shields directly to the chassis ground terminal block. Ensure the field-side shield ends are insulated to prevent the formation of circulating ground loops across long conduit paths.
- Cabinet Environment Verification: Mount the FTA inside a sealed control enclosure that maintains ambient conditions between -40 and 70 deg C, keeping convective airflow unimpeded across the module surface.