Power Connection - Campbell GRANITE VOLT Series Product Manual

FIGURE 9-2. Multiple GRANITE Measurement Modules connected in a star topology

9.7 Power connection

Connect the power supply to the removable Power connector on the side of the VOLT 100 series.
Power supplies providing voltages from 9.6 to 32 VDC may be used.
While the input power requirements of Campbell Scientific instruments vary, there is one
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constant – they all run on 12 VDC. To keep things simple, we only discuss the use of 12 VDC
power supplies in this manual.
Do not connect live leads to an instrument. All connections discussed assume dead leads,
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so switch off power supplies before making connections.
Double check the polarity of connections before switching on power supplies.
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NOTE:
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 into the slots shown in
When the screwdriver is pushed in far enough, the orange terminals will open and remain open
until the screwdriver is removed. 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 9-3 (p. 29).
VOLT 100 series 28