Mitsubishi Electric M800W Series, Connection And Set Up Manual

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M800W/M80W Series Connection and Setup Manual
33 Synchronous Control and Multiple-axis Synchronization Control
578 IB-1501268-K
33.1.2 Reference Position Establishment in Synchronous Operation
Carry out the position alignment of the master and slave axes during machine's setup. The positions between the
synchronous axes tend to deviate at power ON, thus this deviation needs to be adjusted. After position alignment, the
position error between the synchronous axes is always checked while the synchronous operation method is selected.
Perform the zero point establishment in the following steps for machines that perform synchronous operation at all times.
33.1.2.1 Zero Point Establishment in Relative Position Detection System/Dog-type Absolute
Position Detection System
In machine setup, carry out the position alignment between the two synchronous axes.
There are two types of position alignment methods as follows:
- Method using reference position adjustment value
- Method without using reference position adjustment value
(1) Position alignment using reference position adjustment value
This method is enabled when in a synchronous operation, and parameter "#1493 ref_syn" (synchronization at zero
point establishment) is "1" (synchronous). This method is disabled when the parameter is set to "0" (Asynchronous).
There are following limitations in using the reference position adjustment value.
- The grid intervals (#2029 grspc) of the master and slave axes must be the same.
- Zero point return should start when the angle formed by the master and slave axes is smaller than [± Grid
interval / 2].
The zero point of the master axis is deviated from that of the slave axis by one grid, when zero point
return is performed while the inclination is exceeding the allowance.
When the procedure on the next page is performed while the reference position adjustment value is other than "0",
the remaining distance of the slave axis is compensated by the reference position adjustment value in step (e).
Therefore, set the reference position adjustment value to "0" when starting position alignment after balancing.
For speed command synchronization and current command synchronization, carry out "(2) Position alignment
without using reference position adjustment value".
Position alignment at machine setup
Master axis
Slave axis
Allowable inclination range
The same grid interval