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 %
7