APPENDIX 2
Input Connections (continued)
Examples of ‘Positive Removed’ triggering
Contact is ‘Normally Closed’. Input is normally at +12 volts.
When contact opens the input becomes 0 volts.
Examples of ‘Positive Removed’ triggering
Contact is ‘Normally Open’. Input is normally at +12 volts.
When contact closes the input becomes 0 volts.
Example of ‘Positive Removed’ triggering
Contact is ‘Normally Closed’. Input is normally at +12 volts.
When contact opens the input becomes 0 volts.
Power
Supply
Example of ‘Positive Removed’ triggering
Control Panel Switched Output is a positive voltage changing to 0 volts
63
+
12v
0v
+
12v
0v
+
12v
0v
+
12v
0v
+
12v
0v
+
12v
0v
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