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STR4/8 Hardware Manual
920-0030J
5/12/2015
Connecting Input Signals
e STR drives have three inputs:
•STEP:ahighspeeddigitalinputforsteppulsecommands,5-24voltlogic
•DIR:ahighspeeddigitalinputforthedirectionsignal,5-24voltlogic
•EN:a5-24Vinputforremovingpowerfromthestepmotor.WhentheENinputisactivated
the motor is disabled. Activating then de-activating the EN input clears alarms and faults, and
re-enables the motor in the case of drive faults.
Connector Pin Diagram Internal Circuit Diagram
STEP+
STEP
–
DIR–
EN+
EN
–
FAULT+
FAULT–
DIR+
inside drive
220 pF
STEP+
STEP-
220 pF
DIR+
DIR-
220 pF
EN+
EN-
FAULT+
FAULT-
Connection Examples: STEP & DIR
Connecting to indexer with Sourcing Outputs
STR
COM
DIR-
DIR DIR+
STEP-
STEP STEP+
Indexer
with
Sourcing
Outputs
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