Honeywell 900U02-0100 - Figure 14 - Redundancy Switch Module; Figure 15 - Scanner 1 Module

28 ControlEdge HC900 Process & Safety Controller User and Installation Manual Revision 10
May 2019
Redundancy Switch Module (C75/C75S only)
The Redundancy Switch Module (RSM) is shown in Figure 14.
It sits between C75/C75S controllers in the redundant controller
rack. Left Controller is designated
“CPU-A”; right Controller is “CPU-B.” Features include:
1. Lead/Reserve controller status indicators.
2. Keyed switch for manual changes to controller modes or
to facilitate a Manual Fail Over.
Figure 14 – Redundancy Switch Module
Scanner 1 Module (S50/S50S only)
900S50, Scanner1 module is shown in Figure 15
It sits in the I/O rack and provides the link between the
controller and remote I/O. Features at the front of the module
include:
1. LED status/diagnostics indicator for scanner
functions.
2. One private Ethernet 10/100 Base-T Port;
connects to the I/O expansion port on
Controller Module (or to a port on a Switch that
connects to the Controller Module)
3. LED status/diagnostic indicators for
communications functions.
Figure 15 – Scanner 1 Module