Sun Pumps SCP 48-18-48Y BC - Manual (Page 16)

3.6
Controller Settings
The PCC series controllers have several settings (see figure 3). Most features include system configuration
adjustments, some of which are user selectable by an eight position DIP-switch located on the face of the
controller.
Switch 1 is the Remote Switch Logic. With this switch off (down), terminals “RS+” and “GND” must be
connected to turn the controller off. With this switch on (up), terminals “RS+” and “GND” must be connected to
turn the controller on.
Switch 2 is the Low Water Cutoff Logic. With this switch off (down), terminals “RS+” and “GND” must be
connected to turn the controller off. With this switch on (up), terminals “RS+” and “GND” must be connected to
turn the controller on. (This circuit is not used with pool pumps)
Switches 3 and 4 are delay timer adjustments. The delay timer is used for the remote switch and the low water
cutoff. This timer by default is set for 10 seconds. Switch 3 will increase the timer to 10 minutes; Switch 4 will
increase it to 30 minutes. See Remote Switch and Low Water Cutoff for more information. (This circuit is not
used with pool pumps)
Switch 7 is used to control the user interface. When switch 7 is down, the LCD will display various screens
conveying pump and controller operating parameters. The display will cycle through each screen at a
predetermined rate. For troubleshooting and some setup features certain screens are desired. By turning the
switch number 7 on, the display will stop cycling and the current screen will stay on the display. (Note: Switch 7
is not used on the PCA series controller.)
Switches 5, 6, and 8 are not used at this time and should remain down.
3.7 Auxiliary Control Circuits
The auxiliary control circuits are configured and controlled with the “Dip Switches”, “LP Adj.”, “Speed Control”
and the “RS”, “LW” and “GND” terminals. (See Figure 3)
These circuits offer expanded capability and are described here. The remote switch control is for float switches
(storage tank level), pressure switches or a remote system “ON/OFF” toggle switch. The motor speed control is
for adjusting the flow rate of the pump. There is also the low water cutoff, low power shut down and over current
protection circuits. See each corresponding detailed description below.
NOTE: Use only “Shielded Wire” to run from the remote switch to the controller and the ground wire
must be grounded to the controller side only. The low voltage sensor wire insulation should be the same as
the power wiring. Induced voltages from lightning storms or two-way radio transmissions could damage the
controller. (This circuit is not used with pool pumps)
Over-Current Shut Down Circuit
The over-current shut down circuit will turn the controller off any time the current exceeds the current limit of the
controller. When it turns the controller off it will remain off for 3 minutes and then turn on again. When it turns
off an error light will light and the display will say Over-Current. When it turns on again, if it is still pulling
excessive current it will continue to shut down for 3 minutes and try to restart.
Sensor Low Water Cutoff Circuit
The sensor type low water cutoff circuit is designed as a safety feature to protect your pump from running dry or
your tank from over flowing. This feature is designed for use in the submersible SCS systems with the ground
wire installed. For use with the SCB or SCP systems contact SunPumps for assistance. The “LW” terminal of the
controller should be attached to a low water sensor electrode which is mounted in your tank or well. The system
can be used to detect low water or to detect high water depending on the position of switch 2 on the dip switch.
When dip switch 2 is in the off position, the low water cutoff circuit expects not to touch water. If water comes
into contact with it, and completes the circuit to ground, the pump will shut off until the water is removed and the
delay timer times out. A one minute minimum timeout is default for this feature but is modifiable by switches 3
and 4 to 10 or 30 minutes respectively. At certain times the controller will be off for up to 14 minutes depending
on various factors in the controller program. This timeout applies to remote switch and low water cutoff. (This
circuit is not used with pool pumps)