U Page 35
Digital controller RK 4004
Actuator neutral position
DC actuator drive center
Center
offset
.3.1. center offset
What is termed the "center offset" is the difference between the DC
actuator drive center and the actuator neutral position. If this neutral
position deviates from the positioning path center the former may be
changed by entering the "center offset". In the case of a pivoting fra-
me, neutral position means that the positioning roller is parallel to the
guide roller.
If the guider is in "center position" mode while the "center offset" is
changed, the change of parameter value will be performed immedia-
tely by the DC actuator drive. Checking of the actuator neutral positi-
on is possible at once.
.3.2. system offset
If the DC actuator is located in the center of its positioning range the
actual position value "0" will be transmitted via the CAN bus. For spe-
cial applications an offset value may be set in this parameter which is
added to the transmitted actual position value.
.3.3. total resolution
The motor gear constant is displayed in this parameter. It is calcula-
ted on the basis of the following four parameters:
.3.4. encoder resolution, .3.5. rotation gear, .3.6. linear gear,
.3.7. mech. gear factor;
.3.4. encoder resolution
.3.5. rotation gear
.3.6. linear gear
.3.7. mech. gear factor
The motor gear constant is calculated via these parameters.
.3.4.
encoder
resolution
.3.5.
rotation
gear
.3.6.
linear
gear
.3.7.
mech.
gear factor
S 2/S 1
.3.3. total resolution
Center of
rotation
DC actuator drive se-
curing point
Outfeed point
