Rockwell Automation SA3100 Power Module Interface (PMI) Regulator - Manual (Page 18)

2-2 PMI Regulator
2.1.2 Power Module Interface Connector
The 50-pin Power Module Interface connector is used for drive feedback signals as
well as for gate firing, power supply, and pre-charge contactor control signals. The
connector and signals are described in detail in section 2.2.3.
2.1.3 Flex I/O Interface
The Flex I/O interface provides the hardware connection between the PMI processor
and the Flex I/O modules that may be used to read and write analog and digital data
to or from external devices. Flex I/O interfaces to the PMI Regulator via a 20-pin Mini
D connector. The Flex I/O interface is described in chapter 4.
2.1.4 Meter Ports
The motherboard contains four analog output ports on a single connector labeled
“METER PORTS.” The ports provide 8-bit resolution (7-bit plus sign) of internal
processor data to the analog output over a +/-10 volt range.
Each port can be connected to a separate analog device (e.g., a meter or other data-
logging device) located up to 4 meters (13 feet) from the drive. A removable terminal
block connector is used to connect the analog devices to the PMI Regulator. All
connections are made using 2.08-0.326 mm
2 (14-22 AWG) wire.
Note that the four meter ports are not isolated from each other or from system
common. There is one common for each port, but these are tied together as shown in
figure 2.2. Maximum output current is 20 milliamps.
The meter ports can be set up off-line during parameter entry for the UDC module or
on-line using the "Setup UDC" selection from the AutoMax Programming Executive’s
Monitor menu. The outputs can be scaled so that a small portion of the total signal
can be expanded to provide full scale output on the meter or other data-logging
device. The current value of each variable is written to the analog output every minor
loop scan. The ports default to "not used" and output zero volts.
Meter port configuration is described in the SA3100 Drive Configuration and
Programming instruction manual (S-3056).