Overview
Manuals
Eight-Point Groups
Sinking Load Path
Fuse Coordination
Features:
- Thirty-two 15-30 V DC open-collector sinking output circuits.
- Fixed screw terminals with one fuse per eight outputs.
- 0.5 A per point, 1.2 A per eight-point group and 5 A total limits.
Honeywell MC-TDOY62 provides the screw-terminal field interface for thirty-two PDOY22 digital outputs. The documented circuit is an open-collector NPN sinking output with a 15-30 V DC field-voltage range. This is not an electromechanical relay termination. Each output is rated for up to 0.5 A, but the eight-point group and complete-board limits also apply. The MC ordering prefix identifies the conformally coated version of this termination arrangement.
The TDOY62 grouping is important when several outputs operate together: Honeywell allows 1.2 A for each eight-point group and 5 A over all thirty-two circuits. A single fuse serves each group of eight, unlike the two-point grouping on TDOY22. The specification gives a maximum 0.5 V ON-state drop at 0.5 A and 0.5 microampere maximum OFF leakage. Match these characteristics to the field loads, preserve the existing power grouping and allow for the 307.3 by 120.65 mm board footprint.
The MC-TDOY62 Honeywell Coated Screw-Terminal DC Output Assembly may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell MC-TDOY62 official technical documentation and product links.
This multi-page Honeywell technical document contains the exact model and its technical data. Apply the values to the supplied type number and verify its revision before installation.
Each group of eight outputs shares a 1.2 A limit and one fuse. Adding eight individual 0.5 A ratings would exceed the permitted group load. Review simultaneous operating states and load inrush against the complete specification rather than sizing the circuit from channel ratings alone.
The output transistor provides an NPN open-collector sinking path. The field supply and load wiring must match that arrangement; it is not a potential-free relay contact or sourcing output. Verify polarity, supply return and required suppression using the approved field circuit.
Honeywell specifies a 1.6 A, 125 V fuse measuring 5.5 by 17.2 mm for the documented grouping. The fuse rating is not the continuous group-current allowance. Retain the approved protective arrangement and investigate a failed group before fitting replacement hardware or restoring the field supply.
