Description
The Honeywell MC-TDOY22 is a robust digital output termination assembly specifically designed for industrial control systems, primarily used in Honeywell’s TDC 3000 Distributed Control System (DCS). It is engineered to deliver 32 isolated, fail-safe digital output channels with a load voltage range of 15-30 V DC, making it suitable for controlling a wide variety of field devices such as solenoids, alarms, and indicators within process automation environments. This module plays a critical role in extending the control capabilities of DCS setups by converting control logic commands into reliable digital signals for field actuation.
Its design accommodates integration within high-availability systems, supporting one-on-one I/O redundancy to ensure continuous operation through hardware failures or replacements. The MC-TDOY22 works in tandem with the MU-PDOY22 processor module, facilitating enhanced diagnostics and fast switchover times essential for maintaining process uptime. Compact with dimensions around 3.2 cm by 10.7 cm by 13 cm and weighing approximately 0.3 kg, it mounts efficiently in control cabinets, simplifying wiring and reducing space requirements.
Key technical aspects include its intrinsic safety isolators that allow direct connection to Class 1 Division 1 hazardous areas. The module supports Modbus RTU/TCP communication facilitating seamless integration with control networks. Its durable construction and galvanic isolation enhance reliability and reduce electrical noise interference, ensuring stable performance in harsh industrial environments.
| Parameter | Value |
|---|---|
| Model | MC-TDOY22 |
| Brand | Honeywell |
| Product Type | Digital Output Termination Assembly |
| Output Channels | 32 isolated channels |
| Load Voltage Range | 15-30 V DC |
| Communication | Modbus RTU/TCP (with MU-PDOY22) |
| Dimensions | 3.2 cm x 10.7 cm x 13 cm |
| Weight | 0.3 kg |
| Mounting | Control cabinet assembly |
| Safety Rating | Intrinsically safe for Class 1 Div 1 areas |
| I/O Redundancy Support | Yes, one-on-one I/O redundancy |
- MC-TDOY22
Related Honeywell products for system compatibility and extended functionality include:
MU-PDOY22—digital output processor module required for full digital output control.
MC-TAOY22—analog output module complementing digital operations.
MC-TDIY22—digital input termination assembly for input handling.
Honeywell TDC 3000 DCS—the distributed control system platform integrating MC-TDOY22.
FTAs (Field Termination Assemblies)—for various analog and digital input/output connections enhancing system scalability.
Installation requires ensuring appropriate cabinet space and proper grounding practices to maintain signal integrity. Regular maintenance involves visual inspections for terminal tightness and troubleshooting with control software that supports diagnostic feedback on channel statuses. Firmware updates for related software modules help maintain interoperability and security compliance.




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