Overview
Manuals
Manual Valve Backup
Receiver Compliance
Failover Current Gap
Features:
- Sixteen analog output circuits terminated on fixed screw terminals.
- Standby-manual connection with documented single or redundant use.
- Coated size-B assembly for the PAOY22 output architecture.
MC-TAOY52 is the coated Honeywell field termination assembly for sixteen PAOY22 analog output circuits. It uses nonremovable screw terminals and provides the standby-manual connection listed in the ordering table. The compatible processor/FTA arrangement produces normal 4-20 mA outputs; its directly settable range also includes zero and 2.9-21.1 mA. Those extended settings and the maximum current limit should not be confused with the normal operating range accepted by a field receiver.
The manufacturer specifies a 750-ohm maximum resistive load at 20 mA with the nominal 24 V supply reduced to 20 V. The same table gives a 4 ms settling time to 98% of final value and a maximum 20 ms zero-current gap during redundant failover. Confirm the receiving valve or actuator response to the configured transfer. The 307.3 by 120.65 mm size-B board also requires room for field wiring and the installed standby-manual and processor connections.
The MC-TAOY52 51204174-175 Honeywell Coated Screw-Terminal Analog 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-TAOY52 51204174-175 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.
TAOY52 includes the standby-manual connection in the manufacturer ordering table. Record the actual manual-control station, its cable and the plant transfer procedure before service. The FTA listing does not imply that a station or its associated accessories are included with the replacement board.
The documented load limit is 750 ohms at 20 mA with the supply at 20 V, corresponding to 15 V output compliance. Include the receiver and wiring resistance in the check. Do not assume the same load allowance remains valid outside the stated supply and current conditions.
Honeywell specifies a gap at zero current of no more than 20 ms during redundant failover. Check that the installed processor pair and receiver behavior match the intended control strategy. This figure is a transfer characteristic, not the normal output update interval.
