Grundfos MP 204 Motor Monitoring and Protection Unit for SP Pumps
The Grundfos MP 204 is a motor protection that protects the motor primarily by measuring the motor current by means of a true RMS measurement. The MP204 disconnects the contactor if, for example, the current exceeds the preset value. It can be used as a stand-alone or as incorporated in a for example Control DC.
Easy installation – Can be mounted onto any wall or back plate, or simply slide into place on a mounting rail. The simple menu completes set-up in just 2 minutes. Monitors energy – Acts as a monitoring device for energy consumption, so you are always aware of pump running costs. Control from a distance – MP204 solution can be connected to any SCADA system, allowing you remote access to your pump data anywhere.
- System insulation resistance to earth before start
- Motor temperature. Only possible if the motor is fitted with an operational Tempcon temperature transmitter, a Pt100/Pt1000 or a PTC sensor
- Current consumption and unbalance
- Supply voltage
- Phase sequence
- Missing phase
- Power factor (cos phi)
- Harmonic distortion
- Starting capacitor (single-phase operation only)
- Run capacitor (single-phase operation only)
The MP 204 protects against:
- Overload
- Dry running in pumping systems
- Incipient motor defect
- Too high motor temperature
- Supply failure
As standard, the MP 204 incorporates:
- A display for reading values, such as current, voltage, temperature, cos phi, warning and trip codes
- Relay output for external fault indication
- GENIbus connection
- Pt100/Pt1000 sensor input
- PTC/thermal switch input