Product Range; Functions; Factory Settings - Grundfos MP 204 Montage- Und Betriebsanleitung

5. Product range

• MP 204
• external current transformers up to 1000 A.

6. Functions

• Phase-sequence monitoring
• indication of current or temperature (user
selection)
• input for PTC/thermal switch
• indication of temperature in °C or °F (user
selection)
• 4-digit, 7-segment display
• setting and status reading with Grundfos GO
Remote
• setting and status reading via GENIbus.
Tripping conditions
• Overload
• underload (dry running)
• temperature (Tempcon sensor, PTC/thermal
switch and Pt sensor)
• missing phase
• phase sequence
• overvoltage
• undervoltage
power factor (cos φ)
•
• current unbalance.
Warnings
• Overload
• underload
• temperature (Tempcon, see section
12.2 Submersible pumps, and Pt sensor)
• overvoltage
• Undervoltage
power factor (cos φ)(in connection with single-
•
and three-phase connection)
• run capacitor (single-phase operation)
• start capacitor (single-phase operation)
• loss of communication in network
• harmonic distortion.
Learning function
• Phase sequence (three-phase operation)
• run capacitor (single-phase operation)
• start capacitor (single-phase operation)
• identification and measurement of Pt100/Pt1000
sensor circuit.

6.1 Factory settings

Current limit: 0 A
Nominal voltage: 400 V
Class: P (trip delay: 5 seconds)
Trip delay: 5 seconds
Number of phases: 3, non-earthed
Power-on delay: 5 seconds Learning function: Active
Active trip limits
Overload according to class
Underload: - 40 %
Overvoltage: + 20 %
Undervoltage: - 20 %
Phase-sequence monitoring
Current unbalance: 10 %
PTC/thermal switch
The overvoltage and undervoltage trip
limits are deactivated automatically if the
temperature monitoring with Tempcon or
Pt100/Pt1000 is set to active.
Active warnings
Run capacitor, low: - 50 %
Start capacitor, low: - 50 %
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