6
Startup
Before startup
Operating Instructions – CM3C63 – 100
91
6.2
Before startup
Ensure the following prior to startup:
•
Operate the motors only in conjunction with a frequency inverter.
•
Prior to startup, configure the SEW‑EURODRIVE frequency inverter using the suit-
able engineering software.
•
The drive must be undamaged and not blocked.
•
All connections, especially the PE, have been made correctly.
•
All protection covers are installed correctly.
•
All motor protection devices are activated.
•
There are no other sources of danger.
•
With brakemotors, check for proper function of the brakes.
•
The motor surface must not be covered by heat-sensitive or insulating materials.
•
After an extended storage period (independent of the ambient conditions), observe
the information in chapter "Startup after storage" (→
6.3
Startup
During startup, run in the motor at low speed and without axial or radial shaft load for
10 revolutions in each direction, so that the bearing lubrication is distributed evenly.
6.4
Startup after storage
If you use amotor that has been stored for a longer time (independent of the ambient
conditions), observe the following points in chapter "Before startup" (→
•
For brakemotors with BK.. brake, SEW‑EURODRIVE recommends a loop-in
routine (3 minutes running at 300 min
-1
, brake application 1 – 2 times per second).
•
The bearing grease service life is reduced after storage periods > 1 year.
•
After more than 4 years in storage, have the motor inspected for signs of aging of
the ball bearings grease by SEW‑EURODRIVE.
•
Check whether the motor has absorbed moisture as a result of being stored for a
long time. Measure the insulation resistance with a measurement voltage of
DC 500 V.
The insulation resistance varies greatly depending on the temperature. You can
measure the insulation resistance between the connection pins and the motor
housing using an insulation measuring device. The motor must be dried if the insu-
lation resistance is not adequate.
INFORMATION
If the insulation resistance is too low, the motor has absorbed moisture.
SEW‑EURODRIVE recommends to send the motor back to SEW‑EURODRIVE to-
gether with a description of the fault.
26870460/EN – 05/2021
