LMX SERIES™ OPERATION MANUAL
SECTION 7: Auxiliary I/O
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2018 by Pacific Power Source, Inc. (PPS) • All Rights Reserved • No reproduction without written authorization from PPS.
LMX Series Power Source Operation Manual
Page 177 of 463
7
Auxiliary I/O
7.1
Preface
This section describes the Auxiliary I/O functions of the LMX Series® AC power source.
7.2
Connector Location and Pin Designations
7.2.1
DB25 Connector AUX I/O Pin locations
The pin locations for the various I/O signals on the DB25 connectors are shown in Figure 7-1
below. Note that the connector is installed “Upside” down due to mounting constraints.
WARNING: AMX AUX I/O COMPATABILITY
Note that while many signals are functionally equivalent to the AUX I/O signal on the legacy AMX
Series power sources, the DB25 Connector pin assignment on the LMX Series is different from
that on the AMX Series.
DO NOT USE EXISTING AMX WIRE CABLE HARNESSES TO CONNECT TO
AN LMX.
Instead, fabricate a new dedicated LMX cable harness.
PIN# 1 2 3 4 5 6 7 8 9 10 11 12 13
PIN# 14 15 16 17 18 19 20 21 22 23 24 25
RS232
DIGITAL I/O
ANALOG I/O
GND
GND
12VDC
Figure 7-1: DB25 Connector AUX I/O Pin Locations
Functional grouping of pins by I/O function is done as shown in the figure above. The left
hand side groups all
Analog I/O
signals on top on bottom row. The middle section is
reserved for all
Digital I/O
pins. The
RS232
Transmit (Tx) and Receive (Rx) signals are located
on the far right.