BENCH TEST PROCEDURE: PPC (Analog
metering)
Test equipment
required: Digital Multimeter, Adjustable Power supply
Nominal
Voltage Power Supply Range
12 10-18
Vdc
24 20-36
Vdc
36 30-48
Vdc
48 40-64
Vdc
All measurements
described in this procedure should be made at the controller terminals.
1) Make sure that there is a jumper between
Battery(+) and Battery Voltage Sense(+) and one between Battery(-) and Battery
Voltage Sense(-).
2) Check continuity between Battery(-),Solar
Panel(-) and Load(-).
3) Turn off the load circuit breaker and
measure the resistance between Load(+) and Battery(+). It should be open (more
than 10M ohm). Turn on the load circuit breaker and re-measure. It should be
less than 0.2 ohm.
4) Measure the resistance between Solar
Panel(+) and Battery(+). It should be open.
5) Set the power supply to the nominal system
voltage. Connect the power supply negative to the controller Battery(-)
terminal. Connect the power supply positive to the controller Solar Panel(+)
terminal. For 36 volt and 48 volt chargers, briefly connect a jumper between
Solar Panel(+) and Battery(+). When the charge mode light turns on, remove the
jumper.
6) Verify that the charge mode light is on.
Measure and note the voltage between Solar Panel(+) and Solar Panel(-).
7) Measure the voltage between Battery(+) and
Battery(-). It should be the same as
the voltage measured in step 6 to within +/- 0.1 Volt. Measure the voltage
between Load(+) and Load(-). It should be the same as the voltage measured in
step 6 to within +/- 0.1 Volt.
8) Install a jumper between Battery(+) and
Solar Panel(+).
9) Verify the charge termination and charge
resumption set-points by changing the power supply voltage up and down and
observing the activation of the charge mode light.
10) Set the LVD switch to AUTO LVD. Verify the
load disconnect and load reconnect set-points by changing the power supply
voltage up and down and observing the activation of the load disconnected
light. There is a time delay on the load disconnect circuit. The set-points
must be approached slowly to avoid overshooting. With the controller in the
load disconnected mode, press the MANUAL RESET and verify that the light goes
off momentarily. Set the LVD switch to NO LVD and verify that the load
disconnect does not activate.
11) For 12 and 24 Volt chargers only; remove the
jumper between Battery(+) and Solar Panel(+). Increase the power supply voltage
to 18 volts for a 12 volt system or 36 volts for a 24 volt system. Measure the
voltage between Battery(+) and Battery(-). It should be about the float
voltage.