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4. SAFETY OBSERVATION FUNCTION
(c) Alarm reset
After a cause of the alarm is removed, the alarm can be canceled with one of the following methods.
Error reset
CPU reset
Power off to on
(2) How to reset alarm of safety observation function
(a) Using input device
Refer to chapter 7 for the list of alarms supporting reset operation in the alarms of safety observation
function.
STO will be canceled and return to normal operation when the cause of an alarm occurrence is
removed and alarm reset is executed with all the enabled input devices on. It is no problem if the pin
(unused pin) to which an input device is not assigned with [Pr. PSD02 Input device selection DI1] to
[Pr. PSD07 Input device selection DI6] is off.
DI1A
DI1B
DI2A
DI2B
DI3A
DI3B
DI4A
DI4B
DI5A
DI5B
DI6A
DI6B
ALM (Malfunction)
STOS (STO output)
Servo amplifier display
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
(no alarm)
OFF
(alarm)
ON
OFF
(Shut-off)
Alarm reset
Alarm No.
4 - 38
(Enabled)
(Enabled)
(Enabled)
(Unused)
(Enabled)
(Enabled)
No alarm
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