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Power Supply
Reference – 24 EPM-4 Reference Manual
Power Supply
POWER CONNECTORS
Main power is applied to the
EPM-4 through a 10-pin polarized connector. Mating connector Berg
69176-010 (Housing) + Berg 47715-000 (Pins). See the table below for connector pinout and
page 20 location information.
Warning!
To prevent severe and possibly
irreparable damage to the system, it is critical that
the power connectors be wired correctly. Make sure to use all three +5VDC pins
and all four ground pins to prevent excess voltage drop. Some suppliers include a
pin-1 indicator on the crimp housing that corresponds to pin-10 of the pinout.
Table 3: Main Power Connector Pinout
J8
Pin
Signal
Name
Description
1 Ground Ground
2 +5VDC Power Input
3 Ground Ground
4 +12VDC Power Input
5 Ground Ground
6 –12VDC Power Input
7 +3.3VDC Power Input
8 +5VDC Power Input
9 Ground Ground
10 +5VDC Power Input
Note: The +3.3VDC, +12VDC, and –12VDC inputs are only required for expansion
modules that require these voltages.
Some manufacturers include a pin-1 indicator on the crimp housing that corresponds to pin-10 of
the J8 power connector.
Figure 7. J8 and CBL/CBR-1008 Pin Numbering
2
4
6
8
10
1
3
5
7
9
J8
CBL/CBR-1008
1
3
5
7
9
2
4
6
8
10
Some manufacturers include
a pin-1 indicator here that
corresponds to pin-10 of the
power connector pinout