
Programmable Output
e STM23 drives feature one optically isolated digital output. is output can be set to automatically control a
motor brake, to signal a fault condition, to indicate when the motor is moving or to provide an output frequency
proportional to motor speed (tach signal). e output can also be turned on and o by program instructions like
the Set Output (SO) command. e output can be used to drive LEDs, relays and the inputs of other electronic
devices like PLCs and counters. e output transistor’s collector, labeled OUT+, and emier, labeled OUT-, are
available at the connector. is allows you to congure the output for current sourcing or sinking.
Diagrams of various connection types follow.
Do not connect the output to more than 30VDC.
e current through the output terminal must not exceed 40mA.
Connecting a Sinking Output
Connecting a Sourcing Output
STM23
5-24 VDC
Power Supply
+ –
Load
OUT-
OUT+
PLC
5-24 VDC
Power Supply
+ –
OUT-
OUT+
IN
COM
STM23
34
STM23 Hardware Manual
920-0021F
2/14/2012
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