Switchgear with microcontroller for level-dependent control of up to three submersible pumps.

Functions

• Two 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
• Configurable overload protection
• Thermal motor monitoring
• Pump kick function
• Adjustable follow-up time
• Automatic pump alteration (for switchgear for 2 or 3 pumps)
• Service life optimisation (for switchgear for 2 or 3 pumps)
• Standby pump (for switchgear for 2 or 3 pumps)
• Automatic fault-actuated switchover (for switchgear for 2 or 3 pumps)
• Direction of rotation monitoring
• High water alarm with forced switch-on of the connected pump(s)
• Dry-running protection
• Fault memory for 10 error messages including the type of fault
• Operating mode “Ex” for loading presets for “Ex” applications

Equipment

• Display of the current operating status and data, as well as faults via the LCD display and LEDs
• Symbol-based menu navigation
• Configuration of operating parameters and operation via operating button
• Main switch (depending on version)
• Remote access via ModBus
• Integrated alarm buzzer
• Explosion-proof version for direct connection of sensors within potentially explosive atmospheres

• Mains connection: 1~220-230 V, 50/60 Hz or 3~380-400 V, 50/60 Hz
• Max. rated power (P₂) per pump: 4 kW
• Maximum rated current I_N per pump: 12 A
• Activation type of connected pumps: Direct
• Control voltage: 24 V DC
• Ambient/operating temperature: -30…+50 °C
• Storage temperature: -30…+60 °C
• Max. relative humidity: 90 %, non-condensing
• Housing material: Polycarbonate, UV-resistant
• Protection class: IP54
• Electrical safety: Pollution degree II

Switchgear with microcontroller for level-dependent control of two or three submersible pumps with analogue or digital signal transmitters. Individual parameters are entered via symbol-based menu navigation and an operating knob.

Inputs

• 1x analogue precision input (4 – 20 mA) for level control with level sensor to control 1 – 3 pumps
• 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 for level control with an immersion bell (“IPS” version only)
• 1x – 3x inputs* for thermal winding monitoring with bimetallic temperature sensor. Connection of PTC sensors is not possible!
• 1x – 3x inputs* 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 individual run signal (EBM) per pump
• 1x potential-free contact for the individual fault signal (ESM) per pump
• 1x analogue output 0-10 V for the output of the actual level value

*Depending on the number of pumps that can be connected.

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. Direct connection of pumps within potentially explosive atmospheres is possible!