4801-5164J
20 October 2021
38
RS-500 5K Walk-In Cooler Door Installation and Operation Manual
Section 3.10: Door Activation Inputs
Section 3.10.1: Directional Switch
The directional switch input (controlled by program parameter P20; see Section 3.8.1) is primarily used with a three-position
directional switch that opens, stops, or closes the door when the corresponding button is pressed. However, the Smart Controller
can be programmed to hold the door in the fully open, stopped, or fully closed position when the corresponding button is pressed
and held. This can be useful if the operator wishes to lock the door in a particular position using switches connected parallel to the
directional switch.
The Smart Controller prioritizes the buttons on the directional switch in case more than one input is engaged simultaneously. The
Stop button has first priority, the Open button has second priority, and the Close button has third priority.
Section 3.10.2: Manual Switch
The momentary switch input is used to connect a single-button switch that responds to each momentary press sequentially. For
example, if the last movement of the door was toward the closed position, pressing the button will cause it to open; pressing the
button again will cause the door to close.
This input has fourth priority when used in conjunction with the directional switch input.
NOTICE:
This input will be reconfigured for use with the interlock circuit if P4 is set to anything other than 0 (see Section 3.8.1).
Section 3.10.3: Timed Switch
The timed switch input controls the automatic closure of the door when a certain length of time passes after the switch is
triggered. It is commonly used in conjunction with motion detectors, floor loops, and pull-cord switches. In order for the timed
switch input to work, the door must be closed or stopped; if the door has already been updated by some other means, the timer
will not operate and the door will remain open.
This input has fifth priority when the door is idle. However, if the door is closing, the timed input acts as a safety feature, stopping
and reversing the door to the fully open position.
