Rockwell Automation T8062 ICS Regent+Plus High Integrity Power Supply Assembly User Manual
Page 4
I/O Power Supply Assembly (T8060,T8062)
4
Industrial Control Services
Each primary power input is individually fused and filtered with both
standard line filters and metal oxide varistors ( MOVs). The filters attenuate
any high-frequency common mode and normal mode noise present in the
power distribution system. The MOVs clamp high-voltage transients.
Filter, rectifier, and power factor correction circuits convert primary AC
input power to bulk DC voltage. The switching regulator converts bulk DC
power to regulated DC output voltage. Sensing, status, control, and timing
circuits provide for the following:
·
Input power failure - Active low status output. Indicates when the
input voltage is below 85 VAC or 18 VDC. There is a separate signal
for each input.
·
Bulk power failure - Active high status output on AC input modules
only. Indicates the DC bulk voltage (PFC output) is outside the
specified range. There is a separate signal for each input.
·
High-temperature warning alarm - Both an active high and active
low status output are provided. Indicates the module temperature
exceeds 75
°
C. The temperature is sensed near the air inlet (bottom) of
the module.
·
High-temperature shutdown - Internal signal that will shut down the
switching regulator if module temperature is above 85
°
C. The
temperature is sensed near the air inlet (bottom) of the module.
·
Output overvoltage - Internal signal that will shut down the switching
regulatorif the output voltage exceeds +18 VDC or +28 VDC for 15
volt and 24 volt modules respectively. Over-voltage protection circuitry
activation is a permanent error condition, requiring manual intervention
to return module to normal operation.
·
DC output fail - Active high status output indicates the DC output
voltage has gone out of regulation. The DC output fail threshold is
13.75 VDC and 21.75 VDC (
±
0.25 VDC) for the 15 and 24 volt
module respectively.
·
Output current limiting - Internal signal limits output current in
excessive current demand situations.