Operating instructions

04/08 Application manual Positioning 49
Note: If both a motor and a position encoder (two different encoders) are
used, the function "Electronic Gear" can only be used via system bus.
Direction of movement at the start of the positioning
Motion mode
Gearing, absolute or relative
The initial direction is dependent on the target position
Target position is in direction
Positive: Negative:
Slave-drive is accelerated to the master
speed in the same direction
Slave-drive is accelerated to the master
speed in the opposite direction
Gearing, Touch-Probe
Slave-drive is accelerated to the master speed in the same direction
Gearing
Slave-drive is accelerated to the master speed in the same direction. The opera-
tional behavior corresponds to the electronic gear function in the configurations
x15. Refer to the application manual “Electronic Gear”.
After drives are in synchronous operation, a reversal of the master-drive results in a
reversal of the slave-drive independent of the motion mode.
Signals for synchronization acknowledgement
The synchronous operation of the drive and master drive is indicated by the signal
“In Gear”.
−
Logic signal “57 - In Gear” can be output via a digital output.
− Logic signal “624 - In Gear” can be used for logic functions.
The signals “In Gear” are set if the relative deviation between master- and slave-
position is lower than the value of
“In-Gear“-Threshold 1168 for at least „In-
Gear“-Time
1169.
Parameter Setting
No. Description Min. Max. Fact. sett.
1168 “In-Gear”-Threshold 1 u 2
31
-1 u 0 u
1169 “In-Gear”-Time 1 ms 65535 ms 10 ms
Note:
If parameter
“In-Gear“-Threshold 1168 is set to the value zero the sig-
nals “In Gear” are set when the drive attains the master speed.
The signals “In Gear” are reset in the following occurrences:
−
The relative deviation between master- and slave-position exceeds the value of
“In-Gear”-Threshold 1168.
− The drive is decelerated according to the ramps defined in the motion block and
stops at the target position.
−
The speed of the master drive exceeds the value of
Maximim Frequency 419 *.
* The speed of the slave-drive is limited to Maximim Frequency 419.
Application manual Positioning 4904/08