6 Removal and Replacement
6.4 Standby Manual Device Overview
R688 HPM High-Performance Process Manager Service 407
December 2020 Honeywell
6.4 Standby Manual Device Overview
Introduction
A Standby Manual device provides the capability to maintain output signals from an Analog Output or
24 Vdc Digital Output FTA while its nonredundant IOP is replaced.
No external power source option
The Analog and Digital Output Standby Manual device does not have an external power source option.
Standby Manual device connections
The connection of the Analog Output Standby Manual device and the Digital Output Standby Manual
device to the FTA differs. The Analog Output Standby Manual device connects by cable to a unique
connector on the FTA that is labeled STANDBY MANUAL. The Digital Output Standby Manual device
connects to one of the two IOP interface connectors.
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