No DC oUTPUT

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If a power supply is not outputting DC power, 12 or 24VDC at the Power supply main board lower right terminals ( DC+ DC-), there are several potential causes. ·         Legacy Power Supplies (50...
The following items may cause the  PS900 series power supply to have no DC output voltage. 1. If  the DC voltage selection jumper is missing, the power supply will not provide any D...
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...
If your Von Duprin EL (solenoid) device pulls and releases quickly instead of holding the latch retracted, please check all of the items below.In most cases, one or more of these solutions will r...