SATEC C191HM - Manual (Page 41)

Chapter 4 Setup Menus 32
4.7 Relay Operation Control Menu
This menu allows you to set the relay operation mode: non-failsafe or failsafe.
Failsafe relay operation is the opposite of normal operation where relay contacts
are closed when a relay is operated (activated), and are open when a relay is
released (de-activated). In failsafe mode, an alarm is activated by a non-
energized relay which will open in all cases when an alarm condition is present
or an alarm setpoint is not operational either due to a loss of control power or
due to corruption of the setpoint setup configuration. A failsafe relay is closed
only if it is under setpoint control and no alarm conditions exist, or if it is manually
operated via communications.
To select a relay:
Press to activate the middle window, and then use
the up/down arrow keys to scroll to the desired relay.
To change the relay operation mode:
Press to activate the lower window.
Use the up/down arrow keys to set the desired option.
Select nor for normal (non-failsafe) relay operation, or
select FSAFE for failsafe relay operation.
Press to store your new setting or press to
leave your previous setting unchanged.
To quit the setup menu:
From the middle window, press or .
NOTES
1. You will not be able to change the relay operation mode if a relay has been allocated
for pulsing.
2. When a failsafe relay is allocated for pulsing, it automatically reverts to normal
operation.
rELo
nor
rEL.1
SELECT
SELECT
ENTER
ENTER
ESC
ESC
SELECT CHG rELo ENTER ENTER