SOLARJACK PCA 8-60B, User Manual, Page: 4 / 13

7/19/1999 4
CONTROLLER ADJUSTING PROCEEDURE
The PC series controller has an easy to adjust pre-set voltage selector switch.
This six position selector DIP switch is located on the face of the controller
and has three preset voltage settings for various panel and battery
arrangements. Please refer to the chart below for the switch position for your
system.
Only one of the first 3 switches should be in the on position at one time. These
preset voltage settings will work with most standard solar modules on the
market. If you need to change these voltage set points the "panel voltage
adjusting pot" will allow you to do so. (Refer to the controller adjusting
procedures below). CAUTION: Improper adjustment of this pot will decrease the
flow rate of the pump or will not allow the controller to turn on.
The controller is designed to hold the voltage constant around the maximum power
point of the panels. The set points available on this controller are as follows:
Switch No. Used For Voltage Set Point
1. 30 Volt Panel Direct 26.0
2. 45 Volt Panel Direct 41.O
3. 60 Volt Panel Direct 54.0
4. For Factory Use Only
5. Remote Switch Logic
6. Electrode Logic
The purpose of this procedure is to adjust the voltage of the PV array to its
peak power point and thus obtain the maximum water delivery from the pump. This
procedure should be performed with the panels at their normal operating
temperature at mid-day and the appropriate DIP switch in the up position.
1. With the system installed and pumping water, turn the panels away from the
sun until the pump flow rate is reduced by approximately 50%. If this is not
possible then shade the panels slightly until you obtain the same results.
2. Connect a DC volt meter to the pump side of the controller.
(LD+ and LD-)
3. Turn the small brass adjusting screw on the "Panel Voltage Adjusting Pot",
located on the front of the controller, in both directions until the highest
possible voltage is obtained.
4. Return the panels to their normal position. The pump will then operate at its
maximum output.