Troubleshooting
110 UM-PRORUNNER_Mk5-1.2-EN-US
The motor is overheated. The motor was designed for a
star connection but has been
connected in a triangle.
Change the connection from tri-
angle into star.
Voltage and/or frequency devi-
ates from the nominal value
when switching on.
Connect the motor according to
the data on the type plate.
The supply voltage deviates
more than 5% from the nominal
motor voltage.
Find out why it deviates and try
to remedy this.
Insufficient motor cooling. Check the ventilation openings
in the motor housing for block-
age. Check the fan for damage.
The motor overheats and runs
at a low speed.
Loose contact or broken cable
in the power circuit of the motor.
Check the power circuit for
loose contacts or broken
cables.
Too high use of energy. Check the weight of the product
according to the data on the
type plate.
Check the motor for ease of
movement.
The motor hums and does not
run properly.
The motor runs with 2 phases,
e.g. because of a faulty connec-
tion, broken cable or a defective
winding.
Check the connections and the
cable. Dismount the motor for
repair. Refer to section 7.8.11.
The fuses blow and/or the
motor protection is triggered.
The power has been incorrectly
connected.
Connect the power in the cor-
rect way.
Short circuit in the power. Remedy the short circuit.
Wrong fuse (too low value). Adjust the fuse to the nominal
motor current.
Motor protection poorly set. Adjust the motor protection to
the nominal motor current.
Short circuit in the winding or
with respect to the earth.
Dismount the motor for repair.
Refer to section 7.8.11.
The motor does not run. The
motor protection is triggered
immediately.
Incorrect setting of the motor
protection.
Check and/or adjust the motor
protection to the correct value.
The mechanical drive (chains,
belts, rollers or guides) are
blocked.
Remove the blockage. Clean
the machine. If possible,
shorten the inspection/mainte-
nance/cleaning intervals.
Check the chains, drive belts,
rollers, guides and the like for
damage or incorrect adjust-
ment.
Problem Possible cause Solution
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