EVO 150 Controller52Appendix 11 / Chaser-Follower ConfigurationThe Chaser-Follower configuration is used whenever there is a need to align two webs prior tojoining them together.The chaser sensor monitors the position of the first incoming web and the follower sensorcontrols a web guide that steers the second incoming web. The chaser sensor controls the guidepoint of the follower sensor, and this causes the web guide to align the second web with the first.The alignment of the two webs can be fine-tuned by adjusting Offset 1 through the RemoteStation or web browser.To configure the EVO 150 system for chaser-follower operation, set the controller parameters asshown in the table below. Refer to page 21 for more information about setting controllerparameters.Note: Sensor A is the follower sensor and Sensor B is the chaser sensor.Parameter Description Range Default Setting Notes12 Input A type 0-2 1 113 Input B type 0-2 0 124 Sensor A length 2-128 2 see note 125 Sensor B length 2-128 2 see note 136 Sensor A gap 0-2 1 see note 137 Sensor B gap 0-2 1 see note 163 Integrator mode 0-3 0 364 Integrator input 1 type 0-3 2 265 Integrator input 2 type 0-3 0 0[continued on next page]Guide MechanismControllerEdge Detector BEdge Detector AChaser WebFollower Web