4.7.3. Setting the Parameters
For this work it is recommended to have the description of parameters at hand. See the
VLT
Automation Drive Operating Instructions.
NB!
It is very important that the VLT is optimised for the motor before opti-
mising the synchronising controller:
1.
Record the motor data and perform an AMA (Automatic Motor Adaptation)
if possible.
2.
Start programming the synchronisation functions.
Parameter No. 303
Maximum reference: Set the frequency for a value that is about 10% higher than the maximum
value of par.32-80.
Example: Motor 7.5 kW, 1460 1/min at 50 Hz, speed of the application approx. 1800 1/min
f
Nom
x N
Application
N
Nom
x
1, 1 =
50
Hz x
1800
1
min
1460
1
min
x
1, 1
= 62
Hz Maximum ref
.
value
Parameter No. 416
Torque limit for motor mode: Set for maximum. – Choose a lower value, if special safety precau-
tions are necessary.
Parameter No. 417
Torque limit for regenerative operation: Set for maximum. – Choose a lower value, if special safety
precautions are necessary.
Parameter No. 33-80
Record “1” to start the test program.
Parameter No. 33-26
When performing position synchronisation this parameter is used to insert a filter to compensate
for an oscillating master signal. If, for example, the master is experiencing shock loads the pid
loop of the synchronising controller will have a tendency to oscillate as well. A negative value must
be entered.
Example:
If a filter factor of –100000 (100 ms) is used the correction is balanced within: 1000/
(filter factor *10)= 1 second.
Parameter No. 32-00/32-02
Record the slave encoder type. “0” represents the incremental encoder.
Parameter No. 32-01/32-03
Record the resolution of the slave encoder.
Parameter No. 32-30/32-32
Record the master encoder type. “0” represents the incremental encoder.
Parameter No. 32-31/32-33
Record the resolution of the master encoder.
Syncronising Controller MCO 350 Operating
Instructions
4. Synchronisation
MG.33.Q1.02 - VLT
®
is a registered Danfoss trademark
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4