Honeywell MC-PDIY22 80363972-150 80364451-100 Digital Output Module

The Honeywell 80363975-150, also cataloged as the MC-PDOY22 Digital Output Module, operates as a dedicated hardware component for discrete load switching and field actuator command execution within Honeywell High-Performance Process Manager (HPM) and TDC 3000 platforms. Configured as a 32-channel Digital Output Processor, the assembly interfaces control logic to external switching circuits via Field Termination Assemblies (FTAs). It manages load switching across ranges up to 30 VDC or 250 VAC / 125 VDC depending on the connected termination model.

Hardware Specifications

DCS Process Control & Galvanic Isolation

The MC-PDOY22 Digital Output Processor coordinates logic state transitions between the DCS central processor and field-side switching elements. Built to interface with 4-20 mA HART loop protocol environments and discrete marshalling panels, the module provides galvanic channel-to-system isolation to block transient voltage spikes and ground potential differences from entering the control backplane.

Channel outputs map directly to field termination assemblies (such as FTA OY22/62 for low-voltage DC signals or FTA OY23/63 for high-voltage AC/DC loads). By isolating backplane logic from field switching disturbances, the card maintains deterministic loop execution and continuous digital status propagation across industrial process control networks.

Frequently Asked Questions

Q: How many Field Termination Assemblies (FTAs) are required to drive all 32 channels on high-voltage circuits?

A: When utilizing high-voltage FTA models (such as FTA OY23 or OY63 rated for 250 VAC / 125 VDC), two separate FTAs are required to service the full 32-channel output capacity.

Q: Can the MC-PDOY22 card switch both AC and DC load voltages?

A: Yes. The board supports 15-30 VDC switching using FTA OY22/62, and up to 250 VAC / 125 VDC switching when paired with FTA OY23/63 assemblies.

Q: Is the backplane logic electrically isolated from the field load voltage?

A: Yes. The module features integrated galvanic isolation between the backplane bus interface and the field-side termination outputs to prevent common-mode electrical noise from affecting central operations.

Field Installation Guidelines

• FTA Cable Seating: Ensure multi-conductor interface cables connecting the MC-PDOY22 card to the external FTAs are fully seated and secured using locking latches to maintain low-impedance signal paths.
• Cabinet Grounding and Shielding: Connect ground buses and cable shielding directly to the marshalling panel ground bar to maintain system galvanic isolation and protect backplane components from induced electrical transients.
• Voltage Rating Verification: Verify field supply voltage levels before energizing the outputs to ensure compliance with the specified FTA model limits (15-30 VDC for OY22/62 or 250 VAC / 125 VDC for OY23/63).