Viking Access Systems E-4 - Page 39

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37
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, Open, 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 34-35 LED References)
“C” = Common
“N.O.” = Normally Open
Terminals Connections and Input Functions:
Viking Terminal Function Device Terminal
“+28V” --------------------- 24VDC Positive --------------- “+”
“GND” --------------------- 24VDC Negative --------------- “–”
“GND” --------------------- Relay Common --------------- “C”
“Radio” “N.O.”
Open - Stop - Close
“U L” (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
“ReOpen” (see pages 10 & 11) “N.O.”
If stopped: No function
If closing: Stops then Opens gate
“Center” “N.O.”
If not at open limit: No function
If at open limit: Prevents gate from Closing
“Open”
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.”
“U L”
(see pages 10 & 11)
“N.O.”
“ReOpen”
(see pages 10 & 11)
“N.O.”
“Center”
“N.O.”
“Open”
“Stop”
“N.O.”
“Close”
“N.O.”
Aux.
Pwr
+ -
Magnetic Lock
N.O.
N.C.
COM
Guard Station
GND
Close
Stop
Open
Loop Connector
GND
Center
GND
ReOpen
GND
UL
GND
+28V
Radio Station
GND
GND
Radio
+28V +28V
Class 2
Supply +28V
Master
Slave
Aux.
Pwr
+ -
Magnetic Lock
N.O.
N.C.
COM
Guard Station
GND
Close
Stop
Open
Loop Connector
GND
Center
GND
ReOpen
GND
UL
GND
+28V
Radio Station
GND
GND
Radio
+28V +28V
Class 2
Supply +28V
Master
Slave
“N.O.”