16 | Using the Display
General Purpose Refrigerator and Freezers
Buffer Battery for Alarm in
the Event of Power Failure
A buffer battery which permits the controller to operate
autonomously for approximately 48 hours for alarms in
the event of power failure.
The controller itself will recharge the battery, keeping it
charged and ensuring availability when needed.
Figure 12. Battery label
Figure 13. Buffer Batteries
Short-Term Power Failure
The controller detects the presence or absence of the
mains.
In the event of a short mains failure, the display will show
the message NO MAINS alternating with the main
display frame. The buzzer will activate and the display
will flash. Buzzer MUTING is carried out by pressing any
button.
Any relays configured as a remote alarm are not
activated during this phase, avoiding alarm-ism in the
event of a short power failure.
Long-Term Power Failure
In the event of power failure lasting more than 2
minutes, the display will show the message MAINS
FAILURE alternating with the frame of the selected
mode. The buzzer will activate, and the display will flash
for 5 minutes and then start again after 15 more
minutes, unless muted from the keyboard.
Battery Faults
If the battery is disconnected, the display will show the
message
and connection will have to
be verified.
If battery voltage is Vbatt < 7.0 Volt, on the display the
message
will appear and it will have
to be replaced.
The battery pack position is indicated by the label in
External Terminal Board
for Connection to the
Alarm Relay
External terminal board is present on the back of the
refrigerator, connection can be made to a centralized
alarm system via output AL1. The contact switches
operates in relation with the alarm/fault conditions of the
controller.
Figure 14. Label for Remote Alarm Connection
Figure 15. Position of the Terminal Board for Alarm
Relay
AL1
Potential free contact 1 to remote controlled
alarms/faults (max 500 mA)
AL1
(if present) Potential free contact 2 to remote con-
trolled alarms/faults (max 500 mA)
NO BATTERY
BATTERY FAILURE
