SATEC C192PF8-RPR - Manual (Page 37)

Chapter 4 Setup Menus 32
not be affected. After the alarm condition passes, the PFC will return to automatic
operation after the safety delay which is 50 times the power factor setpoint operate
delay (see Note to Table 4-11).
The Stop action freezes the PFC operations in automatic operation modes. The PFC
avoids any automatic switching operations on the capacitor banks while the alarm
condition is present. This action does not affect operations in the Manual/Remote mode.
Alarm relays operate in unlatched mode. This means that a relay is operated while an
alarm condition is present and is automatically released when an alarm condition
disappears. Each relay can be operated from any number of setpoints using an OR
scheme, i.e., a relay will be operative while either of the alarm conditions is still present.
This action converts a common-use event counter to the dedicated time counter that
measures time at 0.1-hour resolution while the setpoint is operative. Each time counter
has a non-volatile shadow counter that counts time at 1-second resolution before the
corresponding time counter is incremented. The time counters can be inspected via the
Status Information Menu. They are labeled by an hour mark in the middle window.
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
from the front panel or 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 or is controlled by the PFC.
2. When a failsafe relay is allocated for pulsing or to the PFC, it automatically reverts to
normal operation.
rELo
nor
rEL.1
SELECT CHG rELo ENTER ENTER
SELECT
SELECT
ENTER
ENTER
ESC
ESC