Commissioning and operation 8
Im portant notes
8.1 Im portant notes
For tria l run w ith out output elem ents, lock the featherkey. Do not deactivate the
protective devices, not even in a trial run.
Check the correct operation of the brake before com m issioning m otors w ith brakes.
8.2 Before sw itching on
1
Note!
Before sw itch-on, you must ensure th at the m otor starts w ith the
intended direction of rotation.
Lenze motors rotate CW (looking at the driven shaft) if a clockwise
three-phase field L1 ^ U1, L2 ^ V 1 , L3 ^ W 1 is applied.
Before initial com m issioning, before com missioning after an extended standstill
period, or before comm issioning after an overhaul of the motor, the fo llow ing m ust be
checked:
• M easure the insulation resistance, in case o f values <1 kQper volt of rated
voltage, dry the w inding.
• Have all screwed connections o f the mechanical and electrical parts been firm ly
tightened?
• Is the unrestricted supply and removal of cooling air ensured?
• Has the PE conductor been connected correctly?
• Have the protective devices against overheating (tem perature sensor evaluation)
been activated?
• Is the controller correctly param eterised for the motor?
(@ Controller operating instructions)
• Are the electrical connections o.k.?
• Does the m otor connection have the correct phase sequence?
• Are rotating parts and surfaces w hich can become very hot protected against
accidental contact?
• Is the contact o f good electrical conductivity if a PE connection on the m otor
housing is used?
Lenze • BA 33.0006 • 3.0
37
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