Power Connection; Earth Ground Connection; Mounting In An Enclosure; Opening The Power Connector Terminals - Campbell CDM-A100 Series Instruction Manual

CDM-A100 Series
7.7

Power Connection

NOTE
7.8

Earth Ground Connection

7.9

Mounting in an Enclosure

22
Connect the power supply to the removable Power connector on the side of the
CDM-A100. Power supplies providing voltages from 9.6 to 32 Vdc may be
used.
When the supply voltage is below 14.5 Vdc, the voltage on the
12V and SW12V terminals track the power supply. Voltage on
these terminals is regulated to 12.5 ± 0.5 Vdc when the supply
voltage is 14.5 to 32 Vdc.
Open the power connector by inserting a screwdriver in the slots shown in
FIGURE 7-3. When the screwdriver is pushed in far enough, the orange
terminals will depress, as shown in the image. The power connector includes
two positive (+VDC) terminals and two negative (–VDC) terminals to allow
for daisy-chaining power supplies. Terminals of the same type open and close
together. Insert the positive wire from the power supply into a +VDC terminal,
and insert the negative wire into a –VDC terminal.
FIGURE 7-3. Opening the power connector terminals
Earth grounding provides protection from static discharge, transients, and
power surges. A ground lug is provided on the CDM-A100 for connection to
earth ground. Minimum 14 AWG ground wire is recommended. The earth side
of the connection should be to a grounding rod or other grounded device.
The CDM-A100 baseplate has mounting holes through which small screws are
inserted into nylon anchors in an enclosure backplate.
If mounting to a DIN rail, use the CDM DIN-Rail Mounting Kit (pn 29388),
shown in FIGURE 7-4.