Description
概观
Essential details:IC695PSA140 120/240VAC or 125VC Power Supply
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IC695PSA140 120/240VAC or 125VC Power Supply
Four LEDs on the Power Supply indicate:
■ Power (Green/Amber). When this LED is green, it indicates power is being supplied to the backplane. When this LED is amber, power is applied to the Power Supply but the Power Supply switch is off.
■ P/S Fault (Red). When this LED is lit, it indicates the Power Supply has failed and is no longer supplying sufficient voltage to the backplane.
■ Over Temperature (Amber). When this LED is lit,it indicates the Power Supply is near or exceeding its maximum operating temperature.
■ Overload (Amber). When this LED is lit, it indicates the Power Supply is near or exceeding its maximum output capability on at least one of its outputs.
The CPU Fault Table shows a fault if any Overtemperature, Overload, or P/S Fault occurs.
The 5.1 VDC output is electronically limited to 7 Amps. The 3.3 VDC output is limited to 10 Amps. If an overload (including short circuits) occurs, it is sensed internally and the Power Supply shuts down. Because it is designed for redundancy applications, this Power Supply latches “OFF” in fault conditions and will not automatically try to restart. Input power must be cycled to clear a latched fault. However, if the Power Supply is used in a non-redundant application where automatic restarting is required, a jumper plug can be installed.
An internal fusable link in the input line is provided as a backup. The Power Supply usually shuts down before the fusable link blows. The fusable link also protects against internal supply faults. The CPU Fault Table shows a fault if any Overtemperature, Overload, or P/S Fault occurs. There is no additional indication if the Power Supply fusable link blows.