RELIANCE 45C220B Line interface module

The APD 4380 accepts a DC voltage or current input and provides an optically isolated DC voltage or current output that is linearly related to the input. The green LoopTracker® input LED provides a visual indication that a signal is being sensed by the input circuitry of the module. It also indicates the input signal strength by changing in intensity as the process changes from minimum to maximum. If the LED fails to illuminate, or fails to change in intensity as the process changes, check the module power or signal input wiring. Note that it may be difficult to see the LEDs under bright lighting conditions. The red LoopTracker output LED provides a visual indication that the output signal is functioning. It becomes brighter as the input and the corresponding output change from minimum to maximum. For current outputs, the red LED will only light if the output loop current path is complete. For either current or voltage outputs, failure to illuminate or a failure to change in intensity as the process changes may indicate a problem with the module power or signal output wiring

Torque Control

This fastening method is commonly used. Fastening is stopped when a predened target torque has been reached. Judgment is made if the peak torque is within range of the upper and lower limit. If the fastening falls within the predened range then an OK result is produced. If the fastening exceeds or falls short of the range then an NG judgment is made. With this system total judgment is performed by measuring the upper and lower limit of fastening time, as well as upper and lower limit for torque.

Angle Control

With this fastening method, fastening is performed from an angle measuring start torque until an optionally set fastening target angle has been reached. Fastening is then stopped, and judgment is made. If the angle and torque value are within the range between the set upper and lower limit, then an OK or NG (for each value) is produced.

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