For PM Synchronous motors, enter the nameplate motor power. LM07 will be calculated.
Refer to LM07 for further details.
LM02 Motor Speed
The rated motor speed in rpm, according to nameplate.
For an Induction Motor you may NOT enter the motor-synchronous speed (e.g., 1200
rpm for a 6 pole, 60Hz motor) Rated Motor Speed = Synchronous Speed - Slip Speed.
Ask the motor manufacturer for the motor rated speed.
Synchronous Motor Speeds
When the following synchronous speeds are entered, a warning
Warning: Value entered appears
to be synchronous motor speed; for an induction motor the rated motor
60 Hz, 2-pole: 3600 rpm
50 Hz, 2-pole: 1000 rpm
50 Hz, 4-pole: 1500 rpm
50 Hz, 2-pole: 3000 rpm
If you cannot find the rated motor speed on the nameplate, use the following example to
estimate the rated speed.
Example:
If the nameplate reads 1200 rpm (synchronous speed) then the value that should
be entered must be lower. For starting purposes, one can estimate the slip at
about 2.9%. Then through running the elevator it is possible to determine whether
further adjustments are necessary. 2.9% of 1200 is 35 rpm. To begin with, use the
value 1200 - 35 = 1165 rpm which is the default value.
Valid Adjustment Range for 60Hz Motors:
From this parameter along with the LM04 Motor Frequency, the F6 Elevator Drive
calculates the number of motor poles. As a result, there are limits as to how low the value
can be adjusted for a motor with a certain number of poles.
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