Advantech ARMA-C125-CRM, Инструкция по установке и эксплуатации

Страница: 39 / 45

ARMA-C125-CRM
38
8. ALARMS AND FAULTS
The amplifier monitors all key operating parameters and provides alarm and fault signals both on
the front panel and remotely. Two LED indicators on the amplifier identify ALARM and
FAULT conditions respectively. Also during a fault condition, a display similar to the following
will appear on the front panel:
An ALARM condition results when a malfunction has been detected that may reduce the
performance of the amplifier or, if allowed to continue uncorrected, may lead to a FAULT
condition (see
TABLE 10 at page 20). An ALARM will not cause automatic amplifier
shutdown.
A FAULT condition results when a fault has been detected which has caused, or is likely to
cause an amplifier failure. As such, a FAULT will automatically cause the amplifier shutdown.
8.1 T
HERMAL
A
LARMS AND
F
AULTS
The amplifier continually monitors its internal temperature and current consumption and includes
an automatic shutdown feature to prevent operation at excessive temperatures.
An alarm will be triggered when the internal temperature of the amplifier exceeds 70
°
C. The
amplifier will continue to operate in this condition.
When the hot spot temperature of the unit exceeds 80
°
C, or when the current consumption exceeds
a certain threshold value, a fault will be triggered and the amplifier will shutdown. The amplifier
will automatically restart when its internal temperature cools below 65°C. If a fault has been
caused by any other condition, then the status of the SSPA must be reset (i.e. to NO FAULT) and
the source of the problem should be corrected before the unit can resume operation (see
RESETTING THE SSPA below).
A thermal alarm can be caused by any of the following conditions:
•
high ambient temperature (the unit is designed to operate between 0
°
C and +50°C ambient)
•
blockage at air intake or exhaust
•
cooling fans failure
8.2 R
ESETTING THE
SSPA
After a FAULT condition has been detected on the amplifier and the source of the problem
remedied, the fault must be cleared in order to resume operation. Also, unforeseen circumstances
might require default parameters to be reset.
A thermal alarm will be cleared automatically after the hot spot temperature of the unit drops
below 65°C.
HIST.FAULT: (message)
<CLEAR> to clear