6. MAINTENANCE, TROUBLESHOOTING
6.4
Error Messages
The Distributor Unit monitors the system for error. When an error occurs, the audible
alarm sounds and an error message appears at the bottom of the display. You can
stop the audible alarm with the ALARM ACK key. The error message remains on the
screen until the reason for the error message is removed.
Error message
The table below shows all the error messages that can appear on the display.
Error category
POWER FAIL
SYSTEM FAIL
SPEED ALARM
ECHO FAIL
The system displays one error message. If many errors occur at the same time, the
most important error message is displayed. See the table below for error message and
priority.
POWER
FAIL
Alarm
No alarm
No alarm
No alarm
No alarm
6-4
DS-620
B voltage circuit
B voltage
+5V voltage
+12 voltage
DS-340
Temperature (high)
Optical line
PI control
DS-610
Communication with DS-600
Communication with DS-620
Speed alarm
Echo
Error
SYSTEM
SPEED
FAIL
ALARM
—
—
Alarm
—
No alarm
Alarm
No alarm
No alarm
No alarm
Alarm
Unit, error
—-
ECHO
FAIL
—
POWER FAIL 100
—
SYSTEM FAIL 2xx
No alarm
SPEED ALARM 300
Alarm
ECHO FAIL 310
Alarm
SPEED ALARM 300
ECHO FAIL 310
56.0
Error code
100
210
211
212
213
220
221
222
231
232
300
310
Error message