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ڞۃڼۋۏۀۍٻڌڋٻڡېۉھۏۄۊۉڼۇٻڮڼہۀۏ۔ٻ
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10-1
10.1 Functional Safety
10.1.1 Safety Standard product
IS7 Inverter offers safety option to reduce the risk of an emergency situation by off
the inverter output to protect the operator when using the machine. Performance level
of safety features are as follows.
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EN ISO 13849-1 : Category 3, PL Class d
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EN 61508 : SIL 2
Caution
When using the safety function, make sure that the system of risk assessment
need to be carried out and if it meets the safety requirements.
10.1.2 Safety function description and wiring diagram
Safety Function is STO function to cut off power supply from motor(Cutting off
inverter output current) by impeding gate with hard-wired and not to cause a torque.
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STO : Safety Torque Off : IEC61800-5-2
STO function has 2 channels(SFT1, SFT2) the input signal is connected to
independently. The signal cut off the output of the inverter control circuit drive signal
and power module.
During operation, safety function is activated, the inverter cut off the output and the
status of motor is “Free Run”. And message is displayed on the KEYPAD(“Safety
Opt Err” message)
To turn off the trip, when inverter of state is normal, press the reset key.
Note
Operating wiring or manintenance, inverter must be turnd off.
Safety function is not electrically isolated or completely block the power of motor.
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