EEA-PAM-535-D-33 EATON Power Amplifiers with Strip Guidance Controller Modules

Operation
Non-contact optical sensors measure the position of the strip edge. The output from a sensor is an electrical signal, which is fed to the strip guidance controller (signal ranges 0 to 20 mA, 4 to
20 mA, 0 to +10V, or 0 to +24V). When activated, the strip guidance controller maintains the strip edge exactly in the center of the measuring range.
If the position of the strip edge deviates from the center of the measuring range, the controller causes the actuator to move the strip edge back into position.
When closed-loop control is activated by the digital input signal “Automatic”, the strip edge is moved from its current position into the measuring range of the sensor. The maximum actuator velocity (forwards and reverse) can be set on the front panel. Whenever the strip edge leaves the measuring range of the sensor, the controller generates a digital output signal which can be processed by the machine controller.
If closed-loop control is not activated, the controller can be operated open-loop. In this case the actuator travels at the velocity set by potentiometer “V+” when digital input “set +” is activated. “V –” and digital input “set –” are used for movements in the reverse direction.
A built-in test function together with front panel monitor points, considerably simplify start-up and fault diagnosis.