General Information; Entrapment Protection Recommendations; Job Site Issues To Consider/Concerns - Overhead door TIMER CLOSE EXPANSION MODULE Manual

Section 2:

General Information

Timer Close Module Entrapment Protection Requirements
This module provides the operator with an automatic door closing feature with a user selectable time delay, auxiliary control inputs and auxiliary reversing inputs.
The Timer Close Module allows the connection of any combination of the following Reversing Devices:
• A 2-wire Monitored Edge Sensor.
• A 2-wire Monitored Photocell (ODC Series II STB) on the operator control board.
• A Normally-Closed Reversing Device.
NOTE: AT LEAST ONE OF THE ABOVE DEVICES MUST BE INSTALLED and enabled for the automatic closing feature to function.
NOTE: The Monitored Edge Sensor input can detect open or shorted wiring to the Edge Sensor using a 2-wire connection. No relay kit is
required to provide this feature.
WARNING
DO NOT use with resister style 2-wire monitored edges
NOTE: Any Miller Edge Sensor Series desired may be used as long as the 2-wire output is specified along with the suffix "DC."
For example: Model number MT21-2R-16DC signifies an MT21 Series sensor with a 2-wire output from the Right, that is 16 feet long and has
the monitoring option required by the Timer Close Module — "DC." Contact Miller Edge at 1.800.220.EDGE.
The timed closing feature is programmed with the operator keypad to start the timer when the door is operated from any combination of the following inputs:
• Open button on the 3-Button Wall Console.
• Radio Control Input.
• Auxiliary Open Input (provided on the Timer Close Module).
The time delay is adjusted using the calibration display on the keypad. This delay can be adjusted from 1 second to 5 minutes, plus 2-10 seconds for the Impending
Operation Warning Delay. (A set of dry relay contacts are provided that signal the impending closing of the door prior to the beginning of the close cycle. It is used in
combination with a signaling device, such as a light, horn, etc.) The module also provides terminals for an input that suspends and resets the timer when activated.
The Timer Close Module includes LED's that indicate when power is applied, the normal functioning of the module, when the Impending Operation Warning is active, when
the timer is timing, and when the timer is being held.
NOTE - Successive activations of an input that is programmed to start the timer or an active reversing input will reset the timer and hold the timer
until the input is de-activated.
Pressing the STOP wall button or STOP keypad key while the Timer Close Module is timing down will cancel the Timer Close operation.
Additional activations of inputs selected to start the timer will start a new timing cycle. For each initiating input, the Timer Close Module will
attempt to close the door 3 times before stopping, if another input prevents the close cycle.
NOTE - The Normally-Open Reversing Input on the operator control board may be used in combination with any of the required Timer Close reversing devices.

Job Site Issues to Consider/Concerns

The following list of items should be considered prior to installing the Timer Close Module at any job site.
• Door activation requirements for Timer Close Module. Examples of devices to initiate the Timer are: 3 button control stations (open button),
radio controls, pull cords, loop detectors, photoelectric controls, key switches, etc.
• Accessory equipment requirements. Examples include: horns, lights sirens, etc.
WARNING
The installation of an Impending Operation Warning Device is strongly recommended on every door equipped with a timer controlled automatic closing feature.
These signaling devices may include, but are not limited to: lights, annunciators, voice modules, etc.
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