Danfoss EM-PMI240, Руководство пользователя

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Some difficulties may occur while operating the electric machine. Possible causes and actions are
given in Table below. If the situation occurs, it should be corrected as soon as possible. These
instructions do not cover all details or variations in the equipment nor provide information for
every possible condition to be met in connection with installation, operation or maintenance.
Contact Danfoss for more information.
Table 12. Troubleshooting chart
Symptom Possible cause Action
Excessive vibration, noise
Unbalance at the connected
machine or the powertrain
components.
Check the balance and installation of the actuator and drivetrain components.
Misalignment between the
electric machine and the
used device.
Check the connections and couplings.
Attachment bolts are loose. Replace and tighten the bolts.
Clearance at the spline
connection.
Check the spline connection.
Imbalance at the electric
machine.
Contact Danfoss. Particles inside the electric
machine.
Bearing damage.
Inadequate lubrication
(electric machine with BHS
option).
Apply bearing lubricant/grease. See Chapter Bearings and lubrication . Contact
Danfoss for further information.
Electric machine
overheating
Overload.
Reduce load. Check the electric machine model description and rating plate, check
the inverter limits.
Cooling system failure.
Check the cooling system integrity, ow and uid temperature.
Change the cooling ow direction to ush the cooling system from sediment
possibly accumulated. See Chapter Emergency operation .
Leakage in the cooling
system.
Check the cooling system circuit and connections.
Rigid particle inside the
machine cooling channel.
Try pulsating coolant to open the channels. Contact Danfoss.
Wrong machine parameters
in the inverter.
Check and correct the machine parameters from the inverter.
Winding short circuit. Replace the electric machine.
Signi cant lubricant leak
Worn radial lip seal. Contact Danfoss.
Block at the grease outlet
channel.
Clean the grease escape channel from solidi ed grease using brush if necessary.
EM-PMI240
10. Troubleshooting
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Danfoss | Produced By: Danfoss Power Solutions | September 2020
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