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10. Alarm
10.1. Identifying Alarm
l The DRDY output opens when an error occurs in the ESB Driver Unit.
l A 7-segment LED is provided on the front panel of the Driver Unit to identify the alarm. The TA
command can be used to identify alarms with the RS-232C communication.
10.1.1. LED Alarm Indicator
Figure 10-1
Figure 10-2: Abnormal (example)
(Example) Excess position error F1 + Heat Sink Over-Temperature P0
Figure 10-3: The LED is indicating normal state.
Green LED: Turns on when the power is turned on.
Normal
: Green
Abnormal : Orange
7-segment LED display: Indicates the type of alarm.
• The alarm is normally indicated by a 2-digit code. Two
characters are displayed in time-sharing.
• When two or more alarms occur, their codes are also
indicated in time-sharing.
— 10-1 —
10.1. Identifying Alarm
10.1.1. LED Alarm Indicator
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Troubleshooting
