Future Design MCT-CM, User Manual

Page: 139 / 247

MCT-CM
139
The redundancy settings
are accessed by selecting ‘Redundancy’ from the device settings ‘View’ menu. They
allow the user to set the redundancy mode of operation, select the primary system and adjust the concurrent
minimum runtime and/or alternating times. The user can also activate the product Load Timer which enables
the alarm inhibit of the OEM configured redundancy alarm. Consult your OEM configuration for the redundancy
type settings.
The redundancy
Status indicates the current operating condition of redundancy. These include:
System 1/2 Inactive
= Redundancy not operating, control outputs off (system 1 and 2)
System 1 Active (automatic) = Redundancy operating system 1 as primary system in auto
System 1 Active (manual) = Redundancy operating system 1 as primary system in manual
System 2 Active (automatic) = Redundancy operating system 2 as primary system in auto
System 2 Active (manual) = Redundancy operating system 2 as primary system in manual
System 1 Active (fail Mode) = Redundancy operating system 1 in auto, primary system 2 failed
System 2 Active (fail Mode) = Redundancy operating system 2 in auto, primary system 1 failed
System 1/2 Active = Redundancy operating system 1 and 2 concurrently (alarm activated)
System 1/2 Failed = Redundancy operating, system 1 and 2 off (dual system failure)
The operational
Mode selection indicates the redundancy mode and allows the user to place redundancy in
auto or manual operation. When in manual mode, only the primary system will operate and equal run time
switching will not take place. System failure alarm inputs and the redundancy process alarm are ignored. When
in auto mode, systems will perform equal run time switching based on user time settings and alternate
automatically upon system failure and redundancy process alarms.
The
Primary system selection allows the user to select system 1 or system 2 for operation. The primary system
selection can only be made when redundancy is placed in manual mode. When in auto mode, the primary
system selection will automatically alternate according to the alternating time settings.
The product
Load Timer button allows the user to activate the alarm start delay of the OEM configured
redundancy process alarm. This alarm is one of the 30 alarms provided by the MCT and can be configured
by the user for process high/low, deviation or rate of change (see section 0