Danfoss VLT Brook Crompton Motor FCM 300 Design Manual page 44

Programming
Description of choice:
Set the desired start voltage.
134 Load compensation
Value:
3 3
0.0-300.0%
100.0%
Function:
In this parameter, the load characteristic is set. By
increasing the load compensation, the motor is given an
extra voltage and frequency supplement at increasing
loads. This is used e.g. in motors/applications in which
there is a big difference between the full-load current and
idle-load current of the motor.
Description of choice:
If the factory setting is not adequate, load compensation
must be set to enable the motor to start at the given load.
CAUTION
Should be set to 0% in case of quick load changes. Too
high load compensation may lead to instability.
135 U/f ratio
Value:
0.00-20.00 V/Hz
Motor dependent
Function:
The output voltage to the motor can be adjusted on a
linear basis from 0 to rated frequency.
Illustration 3.15
136 Slip compensation
Value:
-500.0-+500.0%
100.0%
Function:
The rated slip compensation (factory setting) is calculated
on the basis of the motor parameters. In parameter 136
the slip compensation can be adjusted in detail.
Optimizing makes the motor speed less load dependent.
42
®
VLT DriveMotor FCM Series
This function is not active at the same time as variable
torque (parameter 101).
Description of choice:
Enter a % value of rated slip compensation.
137
[0-3000]
Value:
[1000]
0-100%
0 (OFF)%
Function:
This parameter is used to uphold the motor function
(holding torque) or to pre-heat the motor. DC holding
voltage is active at stopped motor when it is set at a value
which is different from 0. Coasting stop will deactivate the
function.
Description of choice:
Enter a percentage value.
138
Value:
0.5-132 Hz (parameter 200)
3.0 Hz
Function:
Here the frequency at which the external brake is to be
released is selected via output set in parameter 323 or 340
[0-2000]
during running.
Description of choice:
Set desired frequency.
139
Value:
0.5-132 Hz (parameter 200)
3.0 Hz
Function:
Here the frequency at which the external brake is to be
activated is selected via output set in parameter 323 or
340 when the motor is ramping down to stop.
Description of choice:
Set the desired frequency.
See Illustration 3.16.
[-5000 - +5000]
Illustration 3.16 Speed Profile for Brake Function
[1000]
147
Value:
Depends on unit
®
MG03BA02 - VLT is a registered Danfoss trademark
DC holding voltage
Brake cut out frequency
Brake cut in frequency at activated stop
Setup of motor type
[0-100]
[0]
[5-]
[30]
[5-]
[30]