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6 FUNCTIONAL SAFETY
6.4 Safety sub-function
Alarm reset method for safety sub-function
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Safety sub-function control by input device
When the cause of an alarm occurrence is removed and alarm reset is executed with all the enabled input devices on, the
STO is released and the operation returns to normal. STO is released even if the pin (unused pin) to which an input device is
not assigned in [Pr. PSD02 Input device selection DI1] remains off.
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Safety sub-function control by network
Performing the following operation releases the STO and the operation returns to normal.
1.
Remove the cause of the alarm.
2.
Turn on STOC (STO command).
3.
Reset the alarm.
ON
ON
OFF
ON
OFF
DI1A
DI1B
ALM (malfunction)
ON (disabled)
OFF (enabled)
STOS (STO output)
OFF (shut-off)
Servo amplifier display
Alarm No.
Alarm reset
No alarm
ON
STOC (STO command)
ON (disabled)
OFF (enabled)
SS1C (SS1 command)
ON (disabled)
OFF (enabled)
SS2C (SS2 command)
ON (disabled)
OFF (enabled)
SLS1C (SLS1 command)
ON (disabled)
OFF (enabled)
SLS2C (SLS2 command)
ON (disabled)
OFF (enabled)
SLS3C (SLS3 command)
ON (disabled)
OFF (enabled)
SLS4C (SLS4 command)
ON (disabled)
OFF (enabled)
ALM (malfunction)
ON (disabled)
OFF (enabled)
STOS (STO output)
OFF (shut-off)
Servo amplifier display
Alarm No.
Alarm reset
No alarm