Dry Run Protection - ABB ACQ580 Firmware Manual

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Dry run protection

The Dry run protection function can be used to protect the pump from getting dry.
The figure below illustrates the operation of dry run protection function.
Torque (%)
80
60
40
20
0
200
The dry run can be detected using the underload curve, low level mechanical switch
and pressure sensor.
• Underload curve - Detects the pump from getting dry and generates a warning or
fault.
• Low/high level mechanical switch - Indicates the water level in the pump
system through a digital input and generates a warning or fault.
• Pressure sensor - Connected to Supervision 1...3 through an analog input. The
output of supervision indicates the pump inlet getting dry and generates a warning
or fault.
Settings
Menu -> Primary settings -> Pump features -> Dry pump protection
Parameter group 82 Pump protections
400 600 800 1000 1400
1200
(page 274).
Program features 67
Normal operation
No flow
Pump running dry
Speed (rpm)
1600