Danfoss MCO 350 Operating Instructions Manual page 73

Syncronising Controller MCO 350 Operating
Instructions
Parameter No. 303
Maximum reference: Set the frequency for a value that is about 10% higher than the maximum
value of parameter 32-80.
Example: Motor 7.5kW, 1460 1/min at 50Hz, speed of the application approx. 1800 1/min
f
N om
= 62
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 an 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 an incremental encoder.
Parameter No. 32-31/32-33
Record the resolution of the master encoder.
Parameter No. 32-10
Direction of rotation: Record "1" for clockwise rotation of the slave. Record "-1" if the slave is to
run in the opposite direction.
Parameter No. 32-80
Record maximum RPM measured at the slave encoder.
Parameter No. 32-81
Minimum ramp: Set the time in ms for the slave drive to accelerate from standstill to maximum
speed (par. 3280). Consider the value carefully as this setting will highly affect the control accu-
racy!
Parameter No. 32-82
Ramp type: Record "0" for linear ramp and "1" for s-ramp. NOTE: S-ramp requires higher accel-
eration torque.
NB!
It is very important that the VLT is optimised for the motor before optimising the
synchronising controller. First, record the motor data and perform an AMA (Auto-
matic Motor Adaptation) if possible. Then start programming the synchronisation
functions
x N
Application
x
1.1 =
N
N om
H z maximum ref value
.
®
MG.33.Q1.02 - VLT is a registered Danfoss trademark
1
H z x
50 1800
min
x
1.1
1
1460
min
4. Synchronisation
4
73