JVL MAC050 User Manual page 70

2.12 Absolute Multiturn Encoder
2.12.6 Extended encoder operation - detailed description.
As mentioned earlier in this chapter the encoder position is partly mechanical based and
have a total resolution of +/-2048 mechanical revolutions.
When using the encoder in basic operation (default) the overall position counter will stay
valid as long as the power is continuously applied to the motor and no reset is executed.
If the power is cycled, the motor is reset or the parameters are saved in flash memory
only position data in the range +/-2048 are kept valid.
When using the extended encoder operation any position outside the range +/-2047 will
be saved in the flash memory before any event that will normally cause it to be lost.
By doing this it is accomplished that the overall position counter is fully restored with the
actual motor position after power up, reset or a save in flash operation.
Please notice that the position value can only be restored fully if the motor shaft has been
moved less than +/-2048 revolutions during power off.
The full position range in the overall position counter is +/-8192 motor shaft revolutions.
The resolution per revolution is default 8192 counts/rev.
2.12.7 Extended encoder operation - When using MacTalk.
Select this to enable
1
the extended encoder
operation
Following sequence is recommended for setup of the extended encoder operation.
1. Enable the extended encoder option at the "Advanced" tab.
2. Move the mechanics to the desired position where the zero point shall be and press
"Reset position". After doing this the actual motor position will be set to 0.
3. Finish the setup by pressing the "Save in Motor" in order to store the settings per-
manently in the motor.
66 JVL A/S - User Manual - Integrated Servo Motors MAC050 - 4500
Finish the encoder setup
3
by clicking «Save in flash»
to store the new setup
permanent
Only MACxxx-yy-
TT1272-01GB
Click «Reset position» to
2
set the overall position
counter to zero
F
zzz