Operation And Operating Functions - Danfoss MCO 350 Operating Instructions Manual

Syncronising Controller MCO 350 Operating
Instructions
F actor
The settings are automatically saved.

4.9.7. Operation and Operating Functions

After all the values have been set as described, the drive can now be operated normally.
Starting synchronisation
Synchronisation of the slave is started by means of SyncStart (I1), then the master is started. This
ensures optimum synchronisation. The slave drive travels in position synchronisation to the master
until both slave and master marker has been detected. The slave accelerates or slows down,
according to the setting of Parameter 3323, in order to attain the marker position plus the set
offset. It may happen that the slave drive travels faster than the master does, if the slave drive
needs to catch up with the position.
Stopping synchronisation
On opening contact I1 (SyncStart), the slave is stopped at the permitted acceleration.
Fine setting of the position
As soon as the slave drive is in position synchronisation to the master, an adjustment of this
position can be made by means of Inputs 32 + 33. Note: Offset is related to the master position.
Offset related to the slave position can be calculated as follows:
O ffset
Switching to another gear ratio
During synchronisation, a new gear ratio can be selected at Inputs 9 and 10. The gear ratio is
then activated by means of the Switching Input (I2). The slave will then proceed at the permitted
acceleration to this new gear ratio. The offset is related to the first gear ratio after SyncStart.
Therefore a stop and then start must be performed if the offset must relate to the latest gear ratio
it the gear ratio has been changed.
Error procedure
Errors of tracking, over current etc. make the drive stop and the Ready output (O8) is set low.
Reset is done with Input 27 or fieldbus bit 1.9. Reset is also possible with of the [Reset] button
on the local control panel of the drive.
N x x Slaveencoder
400
Set
=
x Display
60
O ffset x Par
. 19 − 06
slave
_ =
Par
. 19 − 07
In case the drive has stopped because of earth fault or short-circuit, disconnect the
drive from the mains before resetting!
®
MG.33.Q1.02 - VLT is a registered Danfoss trademark
resolution
_
value
_
4. Synchronisation
4
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