3.7Forming a Protective Sequence
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Note Setting Bit 5 of Cn-01 to Clear Servo Alarm:
To change a user constant that is made valid by turning the Servopack OFF and then ON,
always wait for at least the “power holding time” after the Servopack is turned OFF, then
turn the Servopack ON. Follow the procedure below.
a) Make sure that all indicators (LEDs) on the Digital Operator have gone OFF.
b) Make sure that the power and alarm indicators (LEDs) on the front panel of the Servo-
pack have gone OFF.
c) Then, turn the power ON again.
Reason
When bit 5 of Cn-01 is set to “1” (clearing servo alarm), the Servopack will operate nor-
mally even if it is turned ON without waiting “power holding time” after being turned OFF.
In this case, however, the inside of the Servopack has not yet been reset (power ON re-
set). Therefore, user constants that have been modified do not become valid if these
constants are made valid by turning the power OFF and then ON. Although the modified
(new) settings appear on the display, the old settings are still valid inside the Servopack.
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