Rockwell Automation T3512 ICS Regent Power Supply Modules - Manual (Page 4)

I/O Power Supply Modules (T3510, 11, and 12)
4
Industrial Control Services
present in power distribution systems. The MOVs provide
clamping of high voltage transients.
On board the power supply module the switching regulator
and rectifier filter circuits convert the primary input power to
15 VDC. Sensing and timing circuits monitor for over-
voltage, over-current (including current limiting), and power
failure.
An AC reset signal is used in the I/O transceivers for power
system interlocking within the I/O system. Should a power
failure occur (either input power or module fault), the AC
reset signal is activated and the front panel indicator is
turned off.
Front Panel Indicator
Figure 4 shows the physical features of the I/O power supply
modules. The front panel of each module contains an output
power indicator.
Output Power Indicator
The green OUTPUT POWER indicator is turned on when the
I/O power supply module's DC output is within tolerance. Out
of tolerance conditions, loss of input power or brown-out, and
module failures will cause the OUTPUT POWER indicator to
turn off.