![]() Without a diode semiconductor, this kickback voltage would damage the control equipment. When a door strike is called, requested, or sent, the coil sends a spike (also called “kickback voltage”) down the line with as much as 50,000 volts. It acts as a grounding tool, allowing the flow of current in one direction only. This will force a negative polarity out of the main relay.Ī diode is a standard semiconductor device integral to the safe and proper function of the door controller. In the case of cutting negative, place the jumper on the top two pins. Install a jumper over the pins next to the Main Relay. Replace the terminal block.įor a fail-secure configuration, insert and secure the black wire into Normally Open (NO). It normally presents a ramped surface to the locking latch allowing the door to close and latch just like a fixed strike.įor a fail-safe configuration, insert and secure the black wire into Normally Closed (NC). An electric strike replaces the fixed strike faceplate often used with a latch bar. A fail-secure locking device remains locked when power is lost. Locking devices can be either "fail-safe" or "fail secure". Remove the Reader 1 or Reader 2 terminal block and insert and secure the red wire from the strike into the positive output. Pull the 18/2 shielded wire through the opening of the box enclosure, m aking sure the wire ends are stripped and prepped for installation. ![]() When installing an electric strike, 18/2 shielded wire is recommended. ![]() The following illustration identifies the location of Cloud Node board connections. The following illustration identifies the placement of Single io board terminal blocks and their basic functions. ![]()
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