Sun Pumps MTR BLM-SB-103S-120Y - Manual (Page 11)

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.
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 one minute. 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.
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.
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. Induced voltages from lightning storms or two-way
radio transmissions could damage the controller.
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. 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 three minute timeout is default for this feature but is modifiable by switches 3 and 4 to 10 or 30
minutes respectively. This timeout applies to remote switch and low water cutoff.