Rockwell Automation SA3100 Power Module Interface (PMI) Regulator - Manual (Page 42)

3-8 PMI Regulator
3.2.3 Drive I/O
The digital drive I/O operates with 115VAC (50/60Hz) nominal line voltage. All input
and output channels have isolated commons with an isolated voltage rating limited to
150VAC. All inputs and outputs have isolation voltage ratings of 1500 volts between
the I/O and the PMI Regulator’s power supplies. See figures 3.8 through 3.10 for the
input and output circuit diagrams.
The RPI input and the MCR output are interlocked in hardware on the board. The
MCR output is activated only when the RPI is asserted and the MCR output is being
commanded on by the PMI processor. The PMI Regulator will begin the process to
turn off the MCR output when any of the following conditions occurs:
• The RPI input signal is removed
• A drive fault occurs
• The torque control algorithm is turned off (TRQ_RUN = 0)
Figure 3.7 – Analog Input Circuit
+
–
312K
+12 V
20K
ANALOG+
1.04M
312K
1.04M
ANALOG -
AGND
TO A/D
SUBSYSTEM
6800 pF
ANALOG SHIELD
.1 uF
-12 V
DGND
AGND
.33 uF
10K
THESE COMPONENTS
ARE ON THE PMI
BACKPLANE THIS CONNECTION
IS MADE CLOSE
TO POWER SUPPLY
AGND