Rockwell Automation T8062 ICS Regent+Plus High Integrity Power Supply Assembly - Manual (Page 5)

I/O Power Supply Assembly (T8060,T8062)
P D - 6 0 5 0 M a r - 0 6
5
· POWER FAIL - Active high status signal that indicates impending loss
of output power due to one of the following:
- Both inputs have indicated power failure
- Remote off control signal activated
- Thermal shutdown
- Output overvoltage
· RESET - Active high status signal that is generated a minimum of 10
ms (AC input module) or 0.5 ms (DC input module) after a POWER
FAIL signal. RESET remains asserted for 200 ms (minimum) after
module power-up.
· PFC off - Active low input that turns off the power factor correction of
an individual input. This signal provides the capability to test the input
circuitry of a module by turning off each input independently while
monitoring the module fail signal
· Remote off - Active low input that turns off the output power of a
module.
Note: Bulk Power Fail, PFC Off and Remote Off are accessed through the
monitor module connector on the chassis backplane. The monitor module
connector allows for a future development of a monitor card that would
provide remote control and enhanced monitoring of the power supply
chassis.
Active low signals are not maintained while RESET is active. All status
signals are open collector and require external pull-up resistors.
RESET is used in the Regent I/O transceivers for power system interlocking
within the I/O system. A power failure (either input power or module fault)
activates RESET and turns off the DC output front panel indicator.
The POWER FAIL and RESET signals are required for proper operation
of Regent I/O transceivers and I/O modules during power up, power down,
and loss of power. Refer to Assembly Installation for details on how to
connect these signals to a Regent I/O chassis.
Front Panel Indicators
The front panel of each I/O power supply module contains the following
indicators: