Installation manual

Vanguard 7300 Installation 3-25
Connecting Vanguard 7300 DC Power
Wiring a Vanguard
7330 DC Power
Supply
Use the procedures in this table for connecting DC power to the dual input terminal
blocks on a Vanguard 7330 Version 1 :
Note
Obtain UL/CSA-approved power cables and connectors with insulated crimp-on
terminals. Power cables must be rated for at least 8A input current. Use cable
harnesses and terminal-connector assemblies that conform to applicable
electrical codes.
Step Action
1 Be sure the Power On/Off switch on the front panel is
in the Off position.
2 Connect the primary power input wires to the two termin
als marked -48
and INPUT RTN on the left of the terminal blocks.
3 IMPORTANT: Connect the ground wire to the ground terminal with
the ground symbol at the right side of the te
rminal blocks.
4 Connect the power cables to the DC power sources.
5 Turn the Power On/Off switch on the front
panel to the On position to
apply
power to the Vanguard 7330.
6 Observe the DC OK LED at the rear of the power supply, under the
terminal blocks. LED status shows
:
• LED illuminated, the power supply is operating properly
• L
ED not illuminated, power supply is not operating properly