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Why does the DC output voltage on the PS914-2RS or PS914-4RL drops when access control is activated?

Following items could cause the DC output on PS914 series power supply to drop when access control is activated.

  • Wrong gauge wire from power supply to the the power transfer.
  • Excessive wire run length from power supply to power transfer.
  • If pulling coil (green and yellow wire) is continuously provided voltage from malfunctioning potted module in EL device.
  • If holding coil (green and orange wire) on EL solenoid is shorted.

See HERE for information on wire run lengths and gauges


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