Page 22 RollSeal SC-325 & SC-650 Controllers Part No 4801-5156 Rev 1-2017
8.3 Timed Switch Input
The timed switch is intended for auto closure of the door and is typically used with motion detectors, floor
loops, or pull cord switches. The timed feature would be used when, for example, a vehicle (i.e. forklift)
would open the door by means of a floor loop. Then, after the door is opened and all safety sensors are clear,
a timer would count down and close the door automatically. In order for the timed feature to work, the door
must have initially been in a closed or stopped position. If the door was already opened by some other means,
the timer would not operate and the door would remain open.
The timed switch has priority five when the door is in the idle mode. However, if the door is in the process of
closing, the timed input will act as a safety feature and that will stop and reverse the door until the door is
fully opened.
Section 12.6 and 12.7 shows the connections for the directional, manual and timed switch inputs to the
controller.
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