Starting Synchronisation; Stopping Synchronisation; Fine Setting Of The Gear Ratio; Switching To Another Gear Ratio - Danfoss MCO 350 Operating Instructions Manual

4. Synchronisation
Parameter No. 19-15
Synchronising error display factor: This factor must be 100, the synchronising error is then dis-
played in RPM related to the slave.
The settings are automatically saved.

4.4.1. Starting Synchronisation

Synchronisation with the master is achieved by closing the SyncStart contact (I1); the drive ac-
celerates the maximum permitted acceleration to the speed of the master (calculated by means
of the gear ratio).
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4.4.2. Stopping Synchronisation

When the SyncStart contact (I1) is opened, the slave is stopped at the permitted acceleration.

4.4.3. Fine Setting of the Gear Ratio

Fine setting of the gear ratio can now be undertaken by means of Inputs 32 + 33. This setting is
only temporary, i.e. the fine setting data will be lost as soon as the VLT is disconnected from the
mains. If the setting is to be saved, a Store operation must be carried out by closing the Store
contact (I4) or by means of Parameters 1900 before the VLT is switched off.

4.4.4. 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.

4.4.5. Error Procedure

Errors of tracking, over current etc. make the drive stop and the Ready output (O8) is reset. Reset
is done with Input 27 or fieldbus bit 1.9. Reset is also possible with the [Reset] key of the local
control panel of the drive.

4.5. Position Synchronisation

4.5.1. Position Synchronisation (angle synchronisation)

The position controller adjusts the slave drive position or angle to the master.
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In case the drive has stopped because of earth fault or short-circuit, please cycle
the power to the drive from the mains before you reset!
MG.33.Q1.02 - VLT
Syncronising Controller MCO 350 Operating
®
is a registered Danfoss trademark
Instructions