Honeywell MC-TDOY22 51204162-175 Digital Output FTA
Manufacturer: Honeywell
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Part Number: MC-TDOY22-51204162-175
Condition：New with Original Package
Product Type: Digital Output Cards
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Honeywell MC-TDOY22 51204162-175 Digital Output Modules
The Honeywell MC-TDOY22 51204162-175, also cataloged as the MC-TDOY22 Digital Output Field Termination Assembly, operates as a dedicated hardware component for driving discrete field actuators within Experion PKS and TDC 3000 platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | MC-TDOY22 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 1.0 kg (Net) / 4.0 kg (Shipping) |
| Dimensions | Standard Honeywell High-Performance Process Manager (HPM) FTA footprint |
| Operating Temp | -20 deg C to +70 deg C |
| Power Consumption | 24 VDC external loop powered |
| Part Number | 51204162-175 |
| Channel Count | 32 Discrete Digital Outputs |
| Nominal Voltage | 24 VDC |
| Termination Type | Screw-type terminal blocks |
| Configuration | Non-redundant (single I/O link connection) |
4-20 mA HART Loop Protocol and Discrete Control Execution
The MC-TDOY22 51204162-175 routes digital control signals from the I/O processor down to field-level actuators, maintaining galvanically isolated signal paths across its 32 discrete output channels. While designed primarily for discrete relay switching, solenoid excitation, and motor starter activation, the field wiring topology provides robust channel-to-channel isolation that prevents inductive kickback voltages from corrupting adjacent 4-20 mA HART loop protocol lines housed in shared cabinet wireways. Integrated overcurrent protection networks per channel safeguard upstream I/O electronics from direct field shorts.
Frequently Asked Questions
Q: What are the primary grounding requirements for field wiring terminations on the MC-TDOY22 FTA?
A: Connect all field cable shield drain wires directly to the designated cabinet earth bus bar. Do not loop common return paths between separate channel blocks, as maintaining distinct return conductors preserves overcurrent protection integrity and prevents cross-channel electrical noise.
Q: Can the MC-TDOY22 be replaced while the associated 24 VDC power supply remains active?
A: Field technicians must isolate the 24 VDC power feed to the FTA before removing field terminal blocks or multi-pin I/O link cables. Disconnecting active output channels under load risks arcing at terminal contacts and may induce momentary logic faults in connected inductive field devices.
Field Installation Guidelines
Secure the MC-TDOY22 51204162-175 onto the standard Honeywell FTA carrier rail using the integrated mounting clips. Connect the multi-pin I/O link cable between the FTA header and the corresponding digital output card in the I/O rack. Strip field conductor ends to 7 mm, insert them into the screw-type terminal blocks, and torque each terminal screw to 0.5 Nm to ensure reliable galvanic contact. Maintain physical separation between 24 VDC field output cables and high-voltage AC power conductors inside cabinet wiring ducts to minimize inductive noise coupling.