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42
Access Control Connections
Appendix (A)
Power Connections
The control board provides a 24VDC output to power external devices and controls.
Alternatively, for devices that require a power supply other than 24VDC, the
operators Power Box contains a convenient 120VAC receptacle to connect a plug-in
transformer.
! TECHNICAL TIP: Each input Terminal (i.e. Radio, Exit, Re-Open, UL) has a corresponding
Status LED that when illuminated indicates an input is currently being provided to the
terminal and the gate is responding accordingly. (See pages 36-37 LED References)
Terminals Connections and Input Functions:
Viking Terminal Function Device Terminal
“+28V” --------------------- DC Positive --------------- “+”
“GND” --------------------- DC Negative --------------- “–”
“GND” --------------------- Relay Common --------------- “C”
“Radio” ------------------------------------------------------------- “N.O.”
If “Timer” OFF: Open - Stop - Close
If “Timer” ON: Open / Reopen if closing
“UL” (see pages 10 & 11) “N.O.”
If input is brief: Stops gate then Reverses 12 inches
If input is longer: Stops gate, does not reverse
“Re-Open” “N.O.”
If stopped: No function
If closing: Stops then Opens gate
“ATG” Anti-Tailgate “N.O.”
Input is received: Stops gate if closing
Input is released: Closes gate to prevent tailgating
“C. Loop” “N.O.”
If not at open limit: No function
If at open limit: Prevents gate from Closing
“Open”, “Exit”, “Fire” & “Strike” “N.O.”
If stopped: Opens gate
If closing: Stops then Opens gate
“Stop” “N.O.”
If traveling: Stops gate
“Close” “N.O.”
If stopped: Closes gate
If traveling: No function
“Radio”
----------------------------------------
---------------------
“N.O.”
“UL”
(see pages 10 & 11)
“N.O.”
“Re-Open” “N.O.”
“ATG”
Anti-Tailgate
“N.O.”
“C. Loop”
“N.O.”
“Open”, “Exit”, “Fire” & “Strike” “N.O.”
“Stop”
“N.O.”
“Close”
“N.O.”
“C” = Common
“N.O.” = Normally Open