CPA-FS1/2.2 DOL

Operating Principle

• CPA-HS (analogue sensor control): A 4-20 mA level transmitter in the sump sends a continuous signal to the panel PLC. Each pump has its own user-defined start level; the PLC stages pumps in or out to keep the liquid at the programmed minimum level.

• CPA-FS (float switch control): The system operates with a minimum-level float, a maximum-level float, and one auxiliary float per pump. Pumps start and stop sequentially as each float is reached.

• Two selectable modes via the touch-screen HMI

– Mode 0 – Emergency: All pumps start individually at their set level and stop together when the minimum level is reached.

– Mode 1 – Standard: Pumps start individually at their set levels, then stop one-by-one as the water falls; the last running pump stops at the minimum level.

Product Features and Benefits

• Lockable main isolator and Hand-0-Auto selector for every pump

• Phase-failure relay and emergency stop for enhanced safety

• Automatic duty rotation and instant standby takeover on pump fault

• Touch-screen display shows all set-points, levels and pump status; operating hours can be reset per pump

• Adjustable start/stop delays and individual run / rest timers for each pump

• Built-in self-test (auto test) and service hour counter for preventive maintenance

• Two-mode operation (Emergency / Standard) adapts to site priorities

• HS version: accepts 4-20 mA analogue level input

• FS version: accepts float-switch inputs

• IP54 powder-coated steel enclosure withstands humid underground chambers

• Digital multimeter on the front panel displays voltage, current and frequency in real time

• Moisture (leak) sensor & PTC thermistor relay inputs for every motor