8
Power Connection
6.1
The NetGuardian uses single or dual (Optional) power inputs, powered through two barrier plug power connectors.
NetGuardian Power Terminals and Fuses
To connect the NetGuardian to a power supply, follow these steps:
1. Always use safe power practices when making power connections. Be sure to remove fuses from
the fuse distribution panel, as well as the back of the NetGuardian, before making your power
connections.
2. Use the grounding lug to connect the unit to earth ground. The grounding lug is next to the symbol
. Insert the eyelet of the earth ground cable between the two bolts on the grounding lug (Ground cable
not included).
3. Insert a battery ground into the power connector plug's right terminal and tighten the screw; then
insert a battery line to the plug's left terminal and tighten its screw.
4. Insert a fuse into the fuse distribution panel and measure voltage. The voltmeter should read between
–40 and –70VDC (for -48VDC build option), +18 and +36VDC (+24VDC build option) or -18 and -
36VDC (-24VDC build option).
5. The power plug can be inserted into the power connector only one way to ensure the correct polarity.
Note that the negative voltage terminal is on the left and the GND terminal is on the right.
6. Insert fuse into the Power A fuse slot. The power LED should be lit green. If the LED is red, the power
connection is reversed. To confirm that power is correctly connected, the front panel LEDs will flash
RED and GREEN, indicating that the firmware is booting up.
7. Repeat steps 1 -6 for Power B connector.
Summary of Contents for D-PK-NG432
Page 50: ...46 Modbus Devices 10 12 The Provisioning Modbus Devices ...
Page 52: ...48 Modbus Registers 10 13 The Provisioning Modbus Registers ...
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