VIKING TECHNICAL SUPPORT 1.800.908.0884
4 2
Access Control Connections
Appendix (A)
Power Connections
The control board provides a 24VDC output to power external devices and controls.
!
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)
“C”
=
Common
“N.O.”
=
Normally Open
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 & 29)
“N.O.”
If stopped:
Prevents the gate from moving
If traveling:
Stops then reverses gate momentarily
“Re-Open”
(see pages 10-11 & 29)
“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
