Function - BST ekr 500 digital Installation And Commissioning Manual

3
Design and Function
Controller with additional control panel
Depending on the conditions in the production machine or the pro-
duction demands, it may be necessary to operate the controller
from a remote location on the machine.
In this case an additional ekr commander control panel can be
connected to the bus interface (socket X101) of the controller.
The connection between the controller and the additional control
panel is completed using a cable extension that is available as an
optional extra.
Fig. 3: Controller with additional ekr commander control panel
3.2

Function

With web edge guiding or web center-line guiding in automatic
mode, one or two edge sensors connected to the controller detect
the current position (ACTUAL position) of the material web and
transmit the respective information to the integrated position
controller.
With line, contrast or feature guiding, a line, contrast or object
sensor detects the current position (ACTUAL position) of a line,
contrast transition or print feature on the material web and trans-
mits the respective information to the position controller.
The position controller compares the ACTUAL recorded position
against the predetermined SETPOINT position. The controller will
send a relevant correction signal to the actuator if a deviation is
found to exist between the two values. The actuator will move the
guiding device (rotating frame guide or swivel roll guide) until the
material web returns to its SETPOINT position.
ekr 500 digital Unit Touch – Installation and Commissioning Manual 21/162