MATelec HydroTOUCH FPC-43220-J Mild Steel 18.5 kW Variable Speed Dual Pump Controller

Hot water recirculation across a dual-pump arrangement is handled by the MATelec HydroTOUCH FPC-43220-J, rated at 18.5 kW and supplied with a 16 bar pressure transducer. This controller operates on a standard three-phase power supply of 400 Vac at 50 Hz, adjusting VSD speed based on live transducer inputs. The unit maintains consistent flow, pressure, or level based on real-time feedback from connected analog transducers and digital switches.

Motor frequency is controlled using PID speed control in pressure, flow and temperature modes, or proportional speed control in level mode. Staggered pump starting and stopping sequences are programmatically executed to prevent electrical current surges and mechanical water hammer. Run hours are balanced across all available drives through built-in duty alternation and automatic sharing protocols.

A 7-inch touchscreen HMI and Setup Wizard simplify system commissioning. The diagnostic screens display graphical overview screens, power and water usage charts, and timestamped alarm logs for system maintenance.

Standard terminal connections accommodate dual analog 4-20 mA inputs, up to five 24 Vdc digital inputs, and a pulse flow meter. Standard RCD protection is not recommended because VSD EMC filtering can cause nuisance tripping. If RCD protection is required, Type B RCDs must be used with consideration of VSD earth leakage current.

• Equipped with a dedicated Variable Speed Drive per pump for high-precision frequency control
• Provides up to ten assignable volt-free outputs for remote BMS status monitoring
• Features two assignable analogue outputs for mirroring speed, pressure, or level
• Integrated Setup Wizard on 7-inch color touchscreen HMI simplifies system commissioning
• Supports Modbus RTU RS485 SCADA protocols for remote monitoring and diagnostics
• Maintains constant pressure or flow rate using dynamic PID adjustment loops
• Offers proportional speed control in level mode and PID speed control in other modes
• Features a pad-lockable mains power isolator switch for electrical safety