EDGE EVO® Isolation Installation Dry Mode Configuration Snubber Circuit Install – Flyback Diode Install When using locks with high current inductive loads it is recommended that a In this mode the relay contacts provide a switch for higher RC Snubber circuit is placed across the contacts of the relay. current loads provided by an external power supply. Relay Coil EH400 This mode is normally recommended for magnetic locks as Snubber Circuit the magnetic coils require additional current to operate NC properly. DS COM P10 NO NC Relay Coil AUX COM EH400 NO + - NC DS COM DC Power Supply P10 NO (12 – 24 Volt) NC AUX COM If no diode is fitted to the lock, then best practice is to install an external NO flyback diode. (See Accessory Kit) + - Relay Coil DC Power Supply EH400 (12 – 24 Volt) Snubber Circuit NC DS COM P10 NO NC AUX COM NO Note the cathode terminal of the diode is connected to + - DC Power Supply the positive potential (+) side of the relay. (12 – 24 Volt) Reference: PLT-02139 © 2007 - 2014 HID Global Corporation. All rights reserved. EDGE EVO® Isolation Installation Wet Mode Configuration Flyback Diode Installation (See Accessory Kit) Wet mode provides a source of power at voltages ranging The recommended position for the diode is at the inductive between 12 and 24 volts. The current supplied is dependent load. If this is not possible the diode can be placed at the on the voltage being supported as well as the source of the product connector. power. Large inductive loads can inject negative spikes into Relay Coil the power supply. This can affect the operation of the product or otherwise cause interference to unconnected systems. EH400 + NC COM Relay Coil DS P10 NO DC NC EH400 AUX (12-24) Volts COM NO NC DS COM P10 NO DC NC AUX (12-24) Volts COM NO Note the cathode terminal of the diode is connected to the positive potential (+) side of the relay. Reference: PLT-02139 © 2007 - 2014 HID Global Corporation. All rights reserved. .