Lenze MDFQA Operating Instructions - Manual (Page 37)

Commissioning and operation
Important notes
8
EN
37 Lenze ¯ BA 33.0006 ¯ 3.0
8 Commissioning and operation 8.1 Important notes
For trial run without output elements, lock the featherkey. Do not deactivate the
protective devices, not even in a trial run.
Check the correct operation of the brake before commissioning motors with brakes.
8.2 Before switching on
)
Note!
Before switch−on, you must ensure that the motor starts with the
intended direction of rotation.
Lenze motors rotate CW (looking at the driven shaft) if a clockwise
three−phase field L1
W U1, L2 WV1, L3 W W1 is applied.
Before initial commissioning, before commissioning after an extended standstill
period, or before commissioning after an overhaul of the motor, the following must be
checked:
¯ Measure the insulation resistance, in case of values £1 kWper volt of rated
voltage, dry the winding.
¯ Have all screwed connections of the mechanical and electrical parts been firmly
tightened?
¯ Is the unrestricted supply and removal of cooling air ensured?
¯ Has the PE conductor been connected correctly?
¯ Have the protective devices against overheating (temperature sensor evaluation)
been activated?
¯ Is the controller correctly parameterised for the motor?
(
, Controller operating instructions)
¯ Are the electrical connections o.k.?
¯ Does the motor connection have the correct phase sequence?
¯ Are rotating parts and surfaces which can become very hot protected against
accidental contact?
¯ Is the contact of good electrical conductivity if a PE connection on the motor
housing is used?