A B C D E F G H I Possible causes
Remedy
✘
✘
✘
Control cable short circuit
Check/replace control cable connections.
✘
✘
Pump blocked
Remove the blockage manually.
✘ ✘
✘
Temperature of power
electronics or motor winding
too high (particularly at high
torque and low speed)
Reduce the ambient temperature by improving
ventilation.
Improve cooling by cleaning the cooling fins.
Ensure the intake opening for the motor fan is not
blocked.
Ensure that the motor fan is working properly.
Reduce the power input by changing the operating
point (system-specific).
Check the permissible load and, if necessary, use
external cooling.
✘
✘
24 V voltage supply
overloaded
Disconnect PumpDrive from the power supply and
eliminate the cause of the overload.
✘
Dry running of pump
Check the hydraulic system and rectify the fault on
PumpDrive.
✘
✘
✘
✘
Sensor (signal) fault
Check sensor and sensor cable.
✘
Phase failure
Check phase and reinsert fuse if required.
11.2 Warnings
Table 112: Overview of warning messages
Message
Description
PumpDrive
response
Current Limit
Impermissible overcurrent
Speed reduction
Out Freq Low
Output frequency below lower limit
Out Freq High
Output frequency exceeds upper limit
Out Curr High
Output current below lower limit
Out Curr High
Output current exceeds upper limit
Feedback Low
Actual value below lower limit
Feedback High
Actual value exceeds upper limit
Setpoint Low
Setpoint below lower limit
Setpoint High
Setpoint exceeds upper limit
Low power
Power below lower limit
High power
Power exceeds upper limit
Analog IN 1 Low
Signal on analog input 1 below lower limit
Analog IN 1 Hi
Signal on analog input 1 exceeds upper limit
Analog IN 2 Low
Signal on analog input 2 below lower limit
Analog IN 2 Hi
Signal on analog input 2 exceeds upper limit
Live Zero AI1
Broken wire detected on analog input 1
Live Zero AI2
Broken wire detected on analog input 2
Ctrl Timeout
Actual value takes too long to arrive (for
actual value via field bus only)
-
No Main-pump
Wiring error (multiple pump configuration
only)
Service required
11 Trouble-shooting
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PumpDrive