6 Removal and Replacement
6.5 AO Standby Manual Device Operation
R688
HPM High-Performance Process Manager Service
409
December 2020
Honeywell
Device interchangeability
There is an interchangeability problem with the Digital Output Standby Manual devices. The software
Release 300, or later, model of the Digital Output Standby Manual device is not compatible with a
Release 230, or earlier Digital Output FTA, nor is the Release 230, or earlier, Digital Output Standby
Manual device compatible with a software Release 300, or later, FTA. Software Release 300, or later,
devices are identified by having phone-type cable connectors, while software Release 230, or earlier,
devices have DIN-type cable connectors.
DIN to phone connector adaptor cable
A DIN to phone connector adaptor cable, Honeywell part number 51201561-xxx, where the suffix “xxx”
is the length of the cable in meters, can be used to interconnect an incompatible Digital Output Standby
Manual device to an FTA, provided the circuit board inside the Digital Output Standby Manual device is
the proper revision as follows.
Digital Standby Manual device with phone connectorPWB 51304451-100, Revision B
Digital Standby Manual device with DIN connectorPWB 51304076-100, Revision C
Board revision level
The 24 Vdc required by the Digital Output Standby Manual device will be missing if the device’s circuit
board is not at the listed revision level.
The R230 and R300 Analog Output Standby Manual devices do not have the same problem.
6.5 AO Standby Manual Device Operation
Purpose
There are two models of the Analog Output Standby Manual (AOSM) device. Both models provide the
same primary function, which is to control the loads connected to an Analog Output FTA while its
associated Analog Output IOP can be removed from service and replaced. The Analog Output Standby
Manual device connects to the Analog Output FTA and provides control of any or all eight of the outputs
that are normally controlled by the IOP.
Two models
The original Analog Output Standby Manual device model is not as convenient to use as the newer
compact Analog Output Standby Manual device model which also offers more features. A description
and the use of both models is discussed in the information that follows.
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