The APCSCR series are SCR Power Controllers (phase angle). The switch selectable control ranges for the Multi Input version are: 0-10V, 0-5V, 2-10V, 1-5 V, 4-20ma, and manually using a potentiometer.  The power delivered to the load is proportional to the command signal input. Input selection options are achieved by dip switch selection as noted above.

A line to 24Vac transformer supplies power and phase information to the controller card. The  transformer is connected across the AC power source as noted below. There is a feature to compensate for line voltage variation. By adjusting the phase angle automatically with line voltage changes, constant power is maintained at the load. To use the line voltage compensation feature properly, the 24Vac transformer should be fed from the same mains as the load circuit to be controlled per the wiring diagram per Figure 1. Line voltage compensation can be enabled or disabled via dip switch selections noted above.

A separate control transformer is required for each APCSCR assembly.

See User Manual for complete list of commands & wiring options.