Microprocessor-controlled switchgear for level-dependent control of up to four submersible pumps.

Functions

• Three different operating modes for a broad field of application:
  • “Drain” operating mode: For draining sewage chambers
  • “Fill” operating mode: For filling water tanks and rainwater storage tanks
  • “FTS” operating mode: For controlling solids separation systems
• Configurable overload protection
• Thermal motor monitoring
• Pump kick function
• Adjustable follow-up time
• Automatic pump cycling (from 2 pumps)
• Service life optimisation (from 2 pumps)
• Standby pump (from 2 pumps)
• Fault-actuated switchover (from 2 pumps)
• Direction of rotation monitoring
• High water alarm with forced switch-on of the connected pump(s)
• Dry-running protection
• Fault memory for 16 error messages including the type of fault
• Maintenance monitoring

Equipment

• Max. number of connectable pumps: max. 2 pumps with float switch, max. 4 pumps with level sensor
• Display of the current operating status and data, as well as faults, using the LCD display and LEDs
• Elapsed time indicator
• Symbol-based menu navigation
• Configuration of operating parameters and operation via operating button
• Main switch
• Motor protection switch in the “DOL” version
• Fuse and motor protection relay in the “SD” version
• Operating mode selection switch per pump: Emergency/test mode, off, automatic mode
• Remote access via Modbus RTU, BACnet and optionally GSM.

• Mains connection: 1~230 V, 50/60 Hz or 3~ 380/400 V, 50/60 Hz or according to customer request
• Max. rated power (P₂) per pump:
  • 15 kW with direct starting
  • 37 kW with star-delta starting
• Maximum rated current I_N per pump:
  • 32 A with direct starting
  • 72 A with star-delta starting
• Activation type: Direct or star-delta
• Control voltage: 24 VDC, 230 VAC
• Operating temperature: 0…+40 °C
• Storage temperature: -10…+50 °C
• Max. relative humidity: 50 %
• Housing material: Coated steel sheeting
• Protection class: IP54
• Electrical safety: Pollution degree II

Microprocessor-controlled switchgear for level-dependent control of 1 … 4 submersible pumps with analogue or digital signal transmitters. Individual parameters are entered via symbol-based menu navigation and an operating button.

Inputs

1x analogue precision input 4 – 20 mA for level control with level sensor

2x (for 1 pump) or 3x (for 2 pumps) digital inputs for level control with float switch

1x digital input for low water level with float switch (dry-running protection)

1x digital input for high water signal with float switch (high water alarm)

1x input per connected pump for thermal winding monitoring for bimetal or PTC temperature sensor

1x input per connected pump for connecting moisture sensors (e.g.: motor compartment leakage or sealing chamber monitoring)

1x digital input for External On/Off for remote activation and deactivation of automatic mode

Outputs

1x potential-free contact for the collective run signal (SBM)

1x potential-free contact for the collective fault signal (SSM)

1x potential-free contact for the high water alarm

1x potential-free contact as a signal to start a pump-dependent submersible mixer (when idle)

1x analogue output 0-10 V for the output of the actual level value

Caution! Signal transmitters are to be provided on-site. Switchgears are not protected against explosions and may only be used outside potentially explosive atmospheres. Signal transmitters within potentially explosive atmospheres must be connected through an intrinsically safe circuit, e.g. breakdown barrier or Ex cut-off relay.

The direct connection of pumps and/or signal transmitters within potentially explosive atmospheres is only possible with the “Ex” version of the switchgear!