Viking Access Systems Q7 manual Access Control Connections, Power Connections

Appendix (A)

Access Control Connections

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.

“C”

=

Common

Terminals Connections and Input Functions:

“N.O.”

=

Normally Open

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

(see pages 10 & 11)

“UL”

“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

Anti-Tailgate

“ATG”

“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

!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)

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