9
vacon • 152 Fault tracing
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
9.2 Load test with motor
1. Connect the motor cables and check the right phase order. Also check that the motor
rotates freely.
2. Check liquid cooling system operation.
3. Turn on the supply voltage and ensure that all input phases are connected to the unit.
4. Check DC link voltage by measuring with multimeter and compare the value to the one
on monitoring page V1.8.
5. Select the application of your choice and set the needed parameters (see Start-up Quick
Guide, step 8 on page 4.
6. Start the operation with lower Current Limit value and long Acceleration/Deceleration
times.
7. If Closed Loop control mode is used, check direction of encoder and make necessary
Closed Loop parameter settings. Check the correct operation of the encoder by running
the system in open loop and check the signals in the expander board menu.
8. Run the motor without load between minimum and maximum frequencies and check the
unit output current with a current clamp. Compare the value to the one on monitoring
page V1.4.
9. Load the motor to nominal value if possible and repeat the current measurement. Follow
the Unit Temperature value on page V1.9.
61 Speed error Motor speed is unequal to reference.
Check encoder connection.
PMS motor has exceeded the
pull out torque.
62 Run disable Run enable signal is low.
Check reason for Run enable
signal.
63 Emergency stop
Command for emergency stop received
from digital input or fieldbus.
New run command is
accepted after reset.
64 Input switch open Drive input switch is open.
Check the main power switch
of the drive.
Table 60. Fault codes
Fault
code
Fault Possible cause Correcting measures
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