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INOVANCE TECHNOLGY EUROPE GmbH
SV660N Startup Procedure_EN_v1.4_20220826.docx
4.1 CONNECTION OF STO TERMINALS
This section describes the definition and functions of the I/O terminal (CN6) for the safe torque off (STO)
functional safety function.
Two isolated inputs are configured to dual-channel inputs of STO function: STO1/STO2.
To make it more convenient and safe for installation, an additional pin with supply voltage (+24V) is integrated.
The bridging of the 24 volts is needed in case the safety circuit is installed but no STO function is needed.
NOTE The servo drive can operate normally only if the input status of STO1 and STO2 are both "1" or "H". If
the input status of either STO1 or STO2 (or both ) is "0" or "L", the servo drive cannot run.
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