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5-13 Safety Function
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
5
Functions
5-13 Safety Function
[Certification pending under the applicable standards]
Overview of Safety Function
The safety function is designed so that the safety stop function of category 0 (uncontrolled
stop) specified in IEC 60204-1 is used to meet the safety standard of Stop PLd under ISO
13849-1.
The safety input function allows inverter output when current is flowing to both the GS1 and
GS2 terminals. When the safety input function actuates, the Inverter's output transistor
operation is stopped while ensuring the level of safety conforming to the above standard, and
the electric power to the motor stops (the motor executes a free-run stop).
 It takes less than 10 ms after the safety input is received until the output is stopped.
 An Emergency Shutoff (E37) message is displayed and a trip occurs. In the case of a competitive
External Trip (E12) setting, the Emergency Shutoff (E37) setting is given priority unless at power-
on.
Note. If the EDM function is not used, PLc under ISO13849-1 applies.
Safety Function Setting
Turn ON the safety function selector switch while the Inverter power is turned OFF. The GS1
input and GS2 input are allocated to multi-function input terminals S3/GS1 and S4/GS2
automatically.
If the EDM output (safety monitor output) is used, turn ON the EDM function selector switch.
The EDM output is allocated to multi-function output terminal P11/EDM automatically.
 Take note that when the safety function selector switch or EDM function selector switch is turned
ON and then OFF, the input/output terminals previously allocated to the GS1/GS2 inputs and
EDM output are reset to "no," meaning no allocation and the I/O contact selection remains NC
contact.
EDM function selector switch
Safety function selector switch
OFF
OFF
ON
(normal)
ON
(EDM)
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