— 14-1 —
14. Alarm
14.1. Identifying Alarm
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The DRDY output opens when error occurs in ESA25 Driver Unit.
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7-segemnt LED is provided on the front panel of the Driver Unit to identify the alarm. “TA”
command can be used to identify alarms.
14.1.1. LED Alarm Indicator
Figure 14-1
Green LED: Turns on when the power is turned on.
7-segment LED display: Indicate the type of alarm.
• The alarm is normally indicated by a 2-digit code. Two
characters are displayed alternately at certain intervals.
• When two or more alarms are detected, their codes are
also indicated alternately at certain intervals.
Normal
: Green
Abnormal :Orange
Figure 14-2: Abnormal (example)
(Example) Excess position error F1 + Heat Sink Over-Temperature P0
Figure 14-3: The LED is indicating normal state.
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