— 14-1 —
14. Alarms
14.1. Identifying Alarms
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The DRDY output opens when error occurs in ESA15 Driver Unit.
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The front panel is provided with a 7-segment LED display to indicate the type of alarm. Also the
TA command can be used to identify alarms.
14.1.1. Using LED
Figure 14-1
LED : Illuminates when the power is turned on.
Normal
: Green
Abnormal : Orange
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.
Figure 14-2: Abnormal (example)
(Example) Excess position error F1 + Heat Sink Over-Temperature P0
Figure 14-3: Shows that the LED is indicating normal state.
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