888-2406-002 2-17
WARNING: Disconnect primary power prior to servicing.
Installation & Initial Turn-On
2.5.9 External and Failsafe Interlock Connections
The transmitter is shipped with two jumpers installed on TB1, the Remote Control
Interface terminal strip: TB1-7 to TB1-6(GND) is for External Interlock and TB1-8
to TB1-10(GND) is for Failsafe.
2.5.9.1 External Interlock Connection
To use the External Interlock connection, remove the jumper between terminals
TB1-7 to TB1-6(GND), then connect external interlock wires. A contact closure
allows the transmitter to operate. When the external interlock connection is opened
the PA power supplies, blower and exciter turn off, the status of the transmitter is set
to off. The external interlock wires can also be connected directly to the Life
Support Board at J4-7 and J4-10 if it is desired to have the interlock completely
separate from the remote control interface. The TB1 and J4 connections are in
parallel. Only one or the other is to be used. NOTE: The transmitter will require an
ON command after the external interlock connection is restored.
!
CAUTION:
TO CONNECT TO THE WAGO BLOCK, J4 ON THE LIFE SUPPORT BOARD
REQUIRES PRESSING A SCREWDRIVER INTO THE RECTANGULAR
SLOT ON THE FRONT SIDE OF THE BLOCK SO THE WIRE CAN BE
INSERTED FROM THE REAR. BE SURE TO PROPERLY SUPPORT THE
BOARD SO THAT IT IS NOT BENT OR STRESSED IN ANY WAY WHILE
INSERTING THE WIRES.
2.5.9.2 Failsafe Interlock Connection
To use the failsafe interlock connection, remove the jumper between TB1-8 to TB1-
10(GND), then connect failsafe interlock wires. A contact closure allows the
transmitter to operate. The Failsafe connection can be used for any application
which requires muting the transmitter RF output. When the failsafe interlock
connection is open the fan is set to high, the IPA and exciter are muted. The failsafe
interlock wires can also be connected directly to the Life Support Board at J4-7 and
J4-8 if it is desired to have the failsafe interlock completely separate from the
remote control interface. The TB1 and J4 connections are in parallel. Only one or
the other is to be used. NOTE: The transmitter will transmit when the failsafe
interlock connection is restored (if it was transmitting when the failsafe connection
was opened).
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