Interlock connection, Figure 5 setup for single external interlock, Five terminal interlock with power relay – Bird Technologies DA40 UHF Series-Manual User Manual
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Bird Technologies
10
Interlock Connection
Units are equipped with one of three interlock systems. Refer to the 
instructions on the following pages appropriate for individual inter-
locks. When connecting terminals to an external interlock, refer to the 
transmitter instructions.
Figure 5 Setup for Single External Interlock
Five Terminal Interlock with Power Relay
This interlock has five terminals on the load’s interlock connection as 
well as an external relay. T-1 and T-2 are the terminals for a thermal 
overload switch which trips if the load’s operating temperature is 
exceeded. P-1 and P-2 are the terminals for a line power switch which 
trips if line power fails. Both switches are normally closed, SPST with 
a rating of 10 A @ 120 VAC and 5 A @ 250 VAC.
Note:
Line power interlock terminals will not function without
the line power relay installed.
CAUTION
Connect interlock before RF operation.