PowerGuard
PRO
User & Installation Guide Rev A
Page 13
Settings
PowerGuard
PRO
will work directly out of the box for a single or twin battery installation. To fine-tune
the system the Disconnect Voltage Settings & Timings may be adjusted using the adjustment
trimming potentiometers (“trim pots”) on the front of the unit. Standard set up allows normal
configuration for most installations.
Caution!
In order to set PowerGuard
PRO
you will need to apply power. Double-check your wiring and
connections before inserting the fuses and applying power.
Adjustment is made by rotating the trim pots using a trimming tool or a small (1.5mm) flat-blade
screwdriver. These are accessed through holes in the front face of the enclosure. Protective rubber
blanking plugs cover the holes and need to be carefully removed in order to adjust the trim pots.
Control
Description
B1 VOLTS
Sets the internal threshold disconnect voltage for battery 1 (Single battery system)
B2 VOLTS
Sets the internal threshold disconnect voltage for battery 2 (Twin battery system)
TIME DELAY
Adjusts the functional time delay (the delay prevents relay chatter)
The range of controls is:
B1 (PowerGuard 1) voltage threshold range = 10.5 to 12.7 V DC [21.0 to 25.4 V DC for 24V unit]
B2 (PowerGuard 2) voltage threshold range = 10.5 to 12.7 V DC [21.0 to 25.4 V DC for 24V unit]
Time Delay = 0 to 240 seconds.
The adjustment range for all three controls is linear so that, using the B1 Control as an example, the
12 o’clock position would represent 11.7 Volts DC
on the 12V variant of PowerGuard
PRO
.
The Disconnect Voltage is the threshold at which PowerGuard
PRO
will disconnect the battery once
the Disconnect Time has elapsed. The type of battery and application in which it is used determines
the Disconnect Voltage and Time setting.
For engine start batteries we recommend:
System
Disconnect Voltage
Disconnect Time
Engine/Primary 12V
12.1V DC
4 minutes
Engine/Primary 24V
24.2V DC
4 minutes
Auxiliary 12V
11.6V DC
2 minutes
Auxiliary 24V
23.2V DC
2 minutes
