Door Detector Override with Nudging Control

Model NUD

Universal Compatibility

Electrodyn's enhanced Model NUD reduces door closing torque and provides an adjustable time cutout function for all existing electric eye and door detector systems. This time cutout is reset when the door fully closes and the output to reopen is interrupted, thus preventing door recycling. For DC door motor applications two 10 amp contacts provide reduced speed and torque closing. The same is achieved for AC door motor applications with our unique ACX control piloted by the NUD output. The design includes terminals for disabling the system during emergencies, ensuring compatibility with Fire Fighters Service Phase I & II code requirements.

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Interface

Model NUD is compatible with all DC motor applications. With the addition of the ACX control, AC Door Operators can be retrofitted as well. Depending on the host control system, interface is accomplished by installing either one or two parallel relays and making a parallel connection in the door operator power circuit. In systems equipped with an electric eye or detector failure signal, connection on signal to NUD places the door in reduced speed mode. Model NUD is available in a wide range of voltages, including 24V to 240V, AC or DC, and internal logic allows reduced speed door placement in the event power is interrupted or the onboard fuse blows.

Model NUD is only one of Electrodyn's many innovative products to help you modernize your elevator system. Choose Electrodyn: we work with you when you have work to do!