Description
Honeywell MC-PDOY22 | 32-Channel Digital Output Processor
Product Overview
The Honeywell MC-PDOY22 is a 32-channel Digital Output Processor used in Honeywell’s TPS Process Manager / High-Performance Process Manager I/O architecture. Honeywell’s published planning documentation identifies the model as “Digital Output 32 Processor (32 Outputs)” and assigns 80363975-150 as its CE-compliant assembly number.
That 32-channel architecture is the defining procurement characteristic. This is not simply a generic 32-point PLC output card. The MC-PDOY22 is an I/O processor intended to work with Honeywell’s associated Field Termination Assemblies and the corresponding Process Manager control architecture.
The MC prefix also matters. Honeywell’s TPS Process Manager technical material states that MC model numbers indicate conformally coated boards, while the model list identifies MC-PDOY22 as the coated version of the Digital Output 32 Processor.
For a replacement purchase, retain both identifiers in the sourcing record:
Honeywell MC-PDOY22 — 80363975-150
Do not reduce the description to “Honeywell 32-channel digital output module.” That loses the system-level identification needed for a legacy DCS spare.
MC-PDOY22
Key Technical Specifications
- Model: MC-PDOY22
- Part number: 80363975-150
- I/O type: Digital Output
- Processor type: Digital Output 32 Processor
- Output count: 32
- Board construction: Conformally coated MC-series version
- System family: TPS Process Manager / Honeywell HPM I/O
- Output interface: Compatible Honeywell Digital Output FTAs
- Redundancy: Supported
- Primary field function: Discrete output control
- Typical load applications: Light-duty relays, solenoids and small lamps, depending on the selected FTA and field circuit
- Compatible FTA families reported for the 80363975-150 assembly: MU-TDOY22, MU-TDOY23, MU-TDOY62 and MU-TDOY63; coated counterparts are also listed in supplier documentation
- 24 VDC output architecture: Available through the applicable 24 VDC FTA configuration
- Relay-output architecture: Available through the applicable relay FTA configuration
- IOP driver architecture: Open-collector/current-sinking transistor drivers are documented for the 24 VDC non-isolated DO configuration
Honeywell’s older technical documentation identifies MC- specifically as the Digital Output 32 Processor (32 Outputs). Current supplier documentation for 80363975-150 also identifies compatible FTA families and the supported output arrangements.
Output Electrical Data — Verify Against the Installed FTA
The important point with MC- is that the final field-side electrical characteristics depend on the FTA configuration.
For the 24 VDC FTA arrangement, available documentation describes:
- 15–30 VDC load-voltage range
- Open-collector, current-sinking NPN transistor outputs
- Galvanic isolation through the FTA
- Up to 0.5 A per point for the MU-TDOY22 configuration
- Aggregate current limitations across groups and the complete 32-channel assembly
For the relay-output configuration, supplier documentation lists 240 VAC / 125 VDC relay output and indicates that two FTAs are required to provide all 32 outputs.
These figures should be treated as FTA-specific configuration data, not as a universal rating that can be applied to every MC- installation.
Global Sourcing & Incoming-Test SOP
A surplus MC- should be received as a DCS system component, not as an anonymous digital-output PCB.
Recommended incoming procedure:
- Photograph the complete nameplate and all visible board markings.
- Record and 80363975-150 independently.
- Record serial number, hardware revision and any additional PCB identification.
- Verify that the unit is the conformally coated MC version.
- Inspect the conformal coating for cracking, peeling, contamination, moisture damage or chemical attack.
- Inspect the edge connector for bent, recessed, oxidized or contaminated contacts.
- Check mounting hardware and mechanical surfaces for damage.
- Inspect the PCB for overheated components, repaired traces, corrosion or evidence of unauthorized modification.
- Identify the customer’s existing FTA before approving the spare.
- Confirm whether the application uses 24 VDC transistor outputs or a relay-output FTA arrangement.
- Confirm the intended system architecture and redundancy configuration.
- If functional testing is required, place the processor in an appropriate Honeywell-compatible test environment.
- Verify initialization, diagnostics and communication with the host I/O architecture.
- Exercise representative output channels with controlled simulated loads.
- Verify output state changes and fault indications.
- Record test conditions and results in the inspection report.
- Package the processor in ESD-protective material for storage or shipment.
Important: This is a recommended incoming-test SOP. It does not indicate that any particular marketplace or surplus MC- has been tested.
Field Engineer’s Pitfall Guide
1. Do not substitute MC-PDOX02 simply because both are Honeywell DO processors.
Honeywell’s planning documentation separates the two models:
- MC-PDOX02: Digital Output Processor, 16 outputs
- Digital Output 32 Processor, 32 outputs
They should be treated as separate I/O configurations.
2. The FTA determines more than the connector interface.
The 80363975-150 documentation lists multiple FTA configurations, including 24 VDC and relay-output arrangements. The allowable field load, voltage and current characteristics therefore have to be checked against the actual FTA installed in the cabinet.
3. Do not assume “32 channels” means 32 identical independently powered outputs.
For the 24 VDC arrangement, published data includes both per-channel and aggregate current limitations. The complete output capability depends on the FTA and its power-distribution arrangement. Size the field load from the applicable Honeywell configuration documentation, not from the model number alone.
FAQ
Q: What is Honeywell MC-?
A: It is a 32-channel Digital Output Processor used in Honeywell TPS Process Manager/HPM I/O architectures. Honeywell identifies 80363975-150 as its CE-compliant assembly number.
Q: What is the Honeywell part number for MC-?
A: The documented CE-compliant part number is 80363975-150.
Q: Is MC- conformally coated?
A: Yes. Honeywell’s technical documentation identifies MC models as conformally coated boards and specifically lists MC- as the coated Digital Output 32 Processor.
Q: How many outputs does MC- have?
A: 32 digital outputs. Honeywell’s model table explicitly calls it the Digital Output 32 Processor.
Q: Is MC- compatible with 24 VDC outputs?
A: Yes, the applicable 24 VDC FTA configuration supports 24 VDC digital-output applications. Published documentation describes the associated output stage as current-sinking/open-collector. The actual load limits must be checked against the specific FTA.
Q: Can MC- handle relay outputs?
A: The 80363975-150 documentation lists compatible relay FTAs capable of 240 VAC/125 VDC relay output configurations. Two FTAs are required for a 32-output relay arrangement according to the cited supplier documentation.
Q: Is MC- the same as MC-PDOX02?
A: No. MC-PDOX02 is the 16-output Digital Output Processor, while MC- is the 32-output processor. Honeywell assigns different part numbers to them: 51304487-150 for MC-PDOX02 and 80363975-150 for MC-.
Q: What should I request from a surplus supplier?
A: Request photographs showing MC- / 80363975-150, the hardware revision and serial number, plus confirmation of coating condition. If the supplier claims the unit is tested, request the actual test procedure and results rather than accepting “tested” as a condition description.
