Water Pump Controller Selection: Control Requirements by Application

Water supply and pressure-boosting systems need to maintain stable water pressure and flow according to demand. The pump control panel typically needs to support pressure signals and control pump start-up and shutdown based on preset conditions.

In dual-pump systems, alternating operation can help distribute pump runtime, while lead-lag control allows the standby pump to take over if the duty pump fails, helping maintain continuity of water supply.

The key requirements in this application are pressure control, automatic operation, and multi-pump coordination.

Agricultural irrigation control requirements depend on water source conditions and irrigation schedules. The pump control panel can operate pumps based on water level, pressure, or signals from irrigation equipment.

When the water supply is insufficient, dry-run protection can stop the pump in time to reduce the risk of damage caused by running without adequate water. For scheduled irrigation, timer functions can also automate pump start-up and shutdown.

The main considerations are water source monitoring, dry-run protection, and scheduled operation.

Wastewater and drainage systems typically use water level as a key reference for pump start-up and shutdown. The pump starts when the water level reaches the preset start point and stops when the level falls to the stop point.

 In dual-pump systems, alternating operation or lead-lag control can help distribute runtime. A standby pump can also be activated when a high-level condition is reached to increase drainage capacity. Electrical protection functions, such as overload and phase-loss protection, are also important considerations.

Pumps in HVAC circulation systems need to adapt to different circulation and load conditions. The pump control panel can work with pressure, differential pressure, or temperature signals to operate pumps according to system requirements.

The specific control strategy depends on the system design and associated equipment. Selection should therefore focus on circulation stability, signal compatibility, and adaptability to changing operating conditions.

Water treatment systems involve multiple process stages, including water intake, transfer, filtration, and discharge. Pump controllers often need to coordinate operation with other equipment.

The pump control panel can operate pumps according to preset logic based on signals such as water level, pressure, flow, and equipment status, while working with related equipment to support process interlocking.

The key considerations in this application are multi-signal coordination, equipment interlocking, and process compatibility.