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Access Control Connections
Appendix (A)
Power Connections
The control board provides a 24v DC output to power external devices and controls.
Alternatively, for devices that require a power supply other than 24v DC, the
operators Power Box contains a convenient 120v AC 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 page 5 for LED References)
Terminals Connections and Input Functions:
Viking Terminal
Function
Device Terminal
“+28v”
---------------------
Positive
---------------------
“
+
”
“GND”
---------------------
Negative
---------------------
“
–
”
“GND”
---------------------
Common
---------------------
“C”
“Radio”
-------------------------------------------------------------
“N.O.”
If “Timer” OFF:
Open - Stop - Close
If “Timer” ON:
Open gate / Stop while closing
“UL”
(see pages 12 & 13)
“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 12 & 13)
“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
