Installation and operating instructions, ATS021
1SDH000759R0002, L4106
32
9. Troubleshooting
9. Troubleshooting
Alarm
Fault
Action
ALARM_OPEN_1
The protection device on the normal
line LN 1 does not open. After 5
seconds the alarm LED starts blinking
and the CB1 LED turns ON.
The alarm can be reset by the RESET key. If
the alarm does not disappear, there is some
malfunction in the protection device and it has to
be changed.
ALARM_OPEN_2
The protection device on the
emergency line LN 2 does not open.
After 5 seconds the alarm LED starts
blinking and the CB2 LED turns ON.
The alarm can be reset by the RESET key. If
the alarm does not disappear, there is some
malfunction in the protection device and it has to
be changed.
ALARM_CLOSE_1
The protection device on the normal
line LN 1 does not close. After 5
seconds the alarm LED and the CB1
LED are blinking.
The alarm can be reset by the RESET key. If
the alarm does not disappear, there is some
malfunction in the protection device and it has to
be changed.
ALARM_CLOSE_2
The protection device on the
emergency line LN 2 does not close.
After 5 seconds the alarm LED and
the CB2 LED are blinking.
The alarm can be reset by the RESET key. If
the alarm does not disappear, there is some
malfunction in the protection device and it has to
be changed.
Table 9.1
Fault situations in ATS021
9.1 Explanations of internal faults ATS021
When digital Input 1 and 2 are both active, logic is locked and the Alarm LED is ON.
When digital Input 3 is active, logic is locked and the Alarm LED is ON.
