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The SC100 controller is a low cost, simple to use simplex or duplex controller for lift station liquid level control. It operates the pumps based on the selected setup parameter values and the 4-20 mA wet well level input signal. The controller has relays for two pump call outputs, and for high and low level alarms outputs. A regulated 24 VDC power supply is provided for powering the pressure transducer circuit. A four digit seven segment red LED display is provided for parameter setup and level display. Red LED’s are provided for pump 1 and 2 call and for high and low level alarm indication. Alternation of the pumps is provided, and a fixed 1-2 or 2-1 sequence may also be selected through the menu. The controller can be setup to perform either pump up control (fill a tank) or pump down control (empty a tank). It also has a fixed 10 second power-up delay, and an adjustable lag pump delay to prevent the turning on of one or both of the pumps immediately after a power interruption. Zero and Span parameters are provided for field calibration of the level input for a wide variety of submersible pressure transducers. The level display is made even more flexible by the addition of a parameter to set the decimal point position, and by a parameter to adjust how fast the level display responds to changes in the level input signal, from very slow to fast. A level simulation feature is provided to test the lift station controls and pump operation.
Unit of Measure


UL File No.

N/A E101681

Operating Voltage (AC)

N/A 120 V

Operating Voltage Tolerance (AC)

N/A ± 10 %

Maximum Input Power

N/A 3.0 V·A

Power for Analog Input

N/A 24 V

Analog Input Voltage Tolerance

N/A ± 1 V

Agency Approval


Operating Temperature

N/A -20 to +65 ºC

Storage Temperature

N/A -45 to 85 ºC

Display Indicator

N/A 4 Digit, 7 Segment, Red LED

Display Range (Selectable Decimal Point Position)

N/A 0 - 2310 ft

Relay Output

N/A 8 A

Analog Input Current (Transient Protected)

N/A 4-20 mA

Analog Input Load (Transient Protected)

N/A 147 ohm


N/A 6.10 in


N/A 7.70 in


N/A 2.78 in


N/A White with Blue Lettering

Enclosure Material

N/A Aluminum