8’ - 24’ POWERFOILPLUS™, POWERFOIL™, & WICKERBILL FANS
WWW.BIGASSFANS.COM ©2010 DELTA T CORP. DBA BIG ASS FAN ALL RIGHTS RESERVED
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WWW.BIGASSFANS.COM ©2010 DELTA T CORP. DBA BIG ASS FAN ALL RIGHTS RESERVED
8’ - 24’ POWERFOILPLUS™, POWERFOIL™, & WICKERBILL FANS
(view from under fan)
Start-up Procedures For Allen-Bradley Controllers
WARNING: The following start-up procedures apply to standard model controllers. Procedures may vary depending on
installation options and system automation. Installer should verify proper wiring, terminations, and proper voltage supply
before proceeding. High voltage gloves and arc flash protection are recommended.
1. Verify proper AC supply voltage at terminals L1, L2, L3 of the controller disconnect for three phase controllers. Verify voltage at
terminals L1, L2 of the controller disconnect for single phase controllers. Refer to “Allen-Bradley Controller Specifications and
Environmental Ratings” (p. 61) for acceptable voltage ranges.
2. If controller is tied into an existing fire alarm panel or building automation system, verify that user-supplied auxiliary contacts are
enabled to permit fan operation. Verify that the supplied door mounted speed potentiometer (1) is set to zero. If controller receives
speed commands from another source, verify that command signals are at the minimum level. Verify that supplied door-mounted “3
Position Switch” (2) is in the OFF position.
3. Energize the control panel. For start-up procedures, it is recommended that the installer perform this step and the following steps
with the controller door open. Turn the disconnect actuator (3) 90º clockwise to energize the control panel. The VFD’s display LEDs
should be lit at this point. If the LEDs are not lit, re-verify proper AC supply voltage at disconnect terminals and at the bottom of the
controller’s fuse block. If necessary, refer to “Troubleshooting Allen-Bradley Controllers” (p. 68).
4. With speed reference or door mounted speed potentiometer (1) set to minimum or zero, turn the door mounted “3 Position Switch”
(2) all the way to the left, or enable remote start/stop signal.
Fan should accelerate from 0 to 10 Hz as indicated on the display. Verify correct fan rotation at this time. Fan should rotate counter-
clockwise when viewed from the floor. If fan’s rotation is incorrect, turn the door mounted “3 Position Switch” (2) all the way to the
right.
5. Increase speed reference from minimum/zero to full scale (door mounted speed potentiometer to 10). Fan should accelerate
smoothly from 10 Hz to 60 Hz (maximum fan speed). If controller trips on any faults, refer to “Troubleshooting Allen-Bradley
Controllers” (p. 68).
6. Monitor fan operation for 30 to 60 minutes in order to verify satisfactory operation. If the fan system is going to suffer from any
condition conducive of a fault, it will happen during this time frame, with the exception of an unknown power condition (refer to pp.
58, 68).
7. Stop the fan. De-energize the controller and associated AC supply circuit. Controller will display “F004” momentarily, indicating
an undervoltage fault. Wait three (3) minutes for internal DC bus voltage to fall to a safe level (darkened display LEDs are not an
indication of safe voltage levels). Close the door to the controller and make sure to lock the enclosure latch (4). Re-energize the
controller by turning the disconnect actuator (3) to the “ON” position. Wait at least 5 seconds for the VFD to pre-charge. Return the
fan to normal operation using the “3 Position Switch” (2).
CAUTION: Never use the “Disconnect Switch” (3) as an ON/OFF switch. This practice will result in damage to the fan that is
not covered by the warranty.
460 VOLT
Three Phase
