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ELECTRICAL INSTALLATION
High Voltage Supply Option
! Caution:
Always turn off power breakers when working with high voltage. DO NOT
connect the "Power Harness" to the Control Board until the electrical installation is
complete and ready for verification.
STEP 1
! WARNING:
SINGLE PHASE AC ONLY
At the "EMI Board": (located behind the Control Board)
a. Set the "Voltage Selector" according to the
supply voltage (115V or 230V).
b. Connect the incoming power wires to the
terminals as shown in the illustration.
c. Ground the ECU cabinet according to local
code or guidelines.
d. Turn on the main facility breaker and verify
that all three (3) Status LEDs are illuminated
on the EMI Board.
Tips for proper ground installation:
To minimize the effects caused by lightning, follow these
guidelines:
• Use a ground rod to provide a ground reference.
• Consult your city code and be aware of underground
services in the site of the gate operator to prevent
inconveniences.
• All ground wires must be as short and as thick as possible.
• Always use a single bonding point for grounding.
• Connect the Earth Ground and Power Ground wires
together. Refer to Figure 1.
• Prevent unnecessary turns or loops in all ground wires.
STEP 2
At the Control Board:
a. Reinstall the Control Board Mounting
Plate with the Control Board(s).
b. Connect the Power Harness and verify
the "POWER" LED is illuminated solid.
c. Reconnect the EMI Harness.
d. Reconnect the Stop Button Harness
e. Reconnect the Siren Harness
1 8
1
Ground Rod
2e
2d
VIKING TECHNICAL SUPPORT 1.800.908.0884
2b
2c
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