KSB PumpDrive 2 - Warnings

11 Trouble-shooting
193 of 212
PumpDrive 2
Alert Possible causes Remedy
14)15)
Overcurrent/
dynamic overload
protection
Incorrect motor current measurement Measure current using suitable snap-on ammeter
and compare with the information displayed on
the control panel.
Note: Approx. 10% tolerance is permissible.
Pump runs in reverse when motor is not
supplied with current
Check swing check valve.
No master control KSB device bus wired incorrectly
(interruption, short circuit)
Re-wire properly.
Sensor connected incorrectly (actual value
failure)
Connect sensor correctly.
No main pump recognised in system Define role in multiple pump system.
Braking resistor Stop ramp time too short Increase ramp time.
Pump runs in reverse when motor is not
supplied with current
Check swing check valve.
Generator operation of pump Impermissible operating range
Dry running/Dry
running (external)
Dry running of pump Check piping.
Check pump valves.
Hydraulic
blockage
Piping clogged
11.3 Warnings
Table117: Warnings
Message
number
Message Description Behaviour
A30 / W30 External message External message present Self-acknowledging
(configurable)
W50 Dynamic overload
protection
Impermissible overcurrent Self-acknowledging
W51 Overvoltage Overvoltage Self-acknowledging
W52 Undervoltage Undervoltage Self-acknowledging
W53 Resonance range Resonance range Self-acknowledging
W54 Broken wire Broken wire Self-acknowledging
W55 Actual value failure Failure of actual value Self-acknowledging
W56 Hydraulic blockage Pumping against closed piping Self-acknowledging
W57 Low flow Low flow Self-acknowledging
W58 Overload Overload Self-acknowledging
W59 Heat sink temperature
high
Power electronics overtemperature Self-acknowledging
W60 PCB temperature high Control electronics overtemperature Self-acknowledging
W61 Current high Motor current high Self-acknowledging
W62 Current low Motor current low Self-acknowledging
W63 Speed monitoring Limit value violation, speed Self-acknowledging
W64 Setpoint monitoring Limit value violation, setpoint Self-acknowledging
W65 Actual value monitoring Limit value violation, actual value Self-acknowledging
W66 Flow rate monitoring Limit value violation, flow rate Self-acknowledging
W67 Suction pressure
monitoring
Limit value violation, suction pressure Self-acknowledging
W68 Discharge pressure
monitoring
Limit value violation, discharge pressure Self-acknowledging
W69 Differential pressure
monitoring
Limit value violation, differential pressure Self-acknowledging
W70 Temperature monitoring Limit value violation, temperature Self-acknowledging
W71 Frequency high Frequency high Self-acknowledging