U Page 40
Digital controller RK 4004
.4.6. photo auto offset
With a follow-up control/tool control the actuator follows up the actual
web position proportionally.
To specify the required set postion of the unwinder/tool the offset bet-
ween the "center" position and the required set position must be en-
tered.
During the actuator initialisation run the offset is set to zero.
Manual offset specification:
The entry of the offset value is in 1/10 mm. Depending on the pre-
sign of the entry the set position of the actuator will be displaced to
the right or left of the center position.
Automatic offset specification:
In the case of automatic specification the web must be located in the
sensor scanning range and the actuator manually moved to the re-
quired set position. The offset is calculated and saved via the "setup"
and "automatic" key combination.
.4.7. speed controller
Parameter block for setting the speed controller.
.4.8. max. motor speed
The motor speed at maximum terminal voltage (22 V) is set here.
The speed value may be found in the table in chapter 6. The speed
value is set at 22 V motor voltage.
.4.9. act. speed
The actual motor speed of the DC actuator at that moment is display-
ed .
.5.0. speed_P; .5.1. speed_I
Please refer to the table in chapter 6 for the P and I components of
the various device types.
The values must not be changed. They have already been optimised
at the factory.
A change to these 2 parameters impairs the optimum function of
the guider. A change to these values may range from guiding im-
pairment to the system ceasing to function.
Center position
.4.6. photo auto
offset
Center position
Actuator set position
