PDU-1209 User
’s Guide
18
7 Alarm conditions
The PDU-1209 outputs an alarm when one of the following problems occurs.
While the ALARM (DC12V) LED is illuminated, the PDU-1209 automatically interrupts power to the particular
DC output connectors with an overcurrent condition. Power is automatically restored, once the overcurrent
fault has been corrected.
[Table 7.1] Outputting alarm
ALARM LED
Power supply
Problem
Stop supplying
Malfunction and overcurrent
【
Continues to
supply
Failure in the fan or rotating speed slows down due to
age-related deterioration
【
7.2 Fan rotating speed slows down
Note:
In case an alarm is output, the PDU-1209 may be damaged. Power off the PDU-1209 and stop using it.
Tip:
ALARM (DC12V) LED lights if even one DC output connector has an overcurrent condition.
Contact
Rated voltage: 24 V
Rated current: 300 mA
Outputting alarm
LED lights: A problem occurs
LED does not light: No problems occur
[Figure 7.1] Outputting alarm
