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9 - Big
Ass
Fans Electrical Installation (cont.)
9.4 - Setup and wiring: 200–240 V & 400–480 V Delta E Series VFDs (Powerfoil
®
X Series fans)
WARNING: The fan controllers contain high voltage capacitors that take time to discharge after removal of mains supply.
Before working on the fan controller, ensure isolation of mains supply from line inputs at the fan controller’s disconnect if
installed. Wait three (3) minutes for capacitors to discharge to safe voltage levels. Failure to do so may result in personal
injury or death. Darkened display LEDs are not an indication of safe voltage levels.
To enable the fan to connect to the BACnet adapter:
1.
Remove the VFD enclosure cover. Connect the BAFCon controller (provided with the fan) to the VFD by plugging the controller
cable into the VFD's CAT5 power tap. Apply power to the fan.
2.
Check the fan's Modbus address. Each fan is programmed with a random address between 1–247. On the BAFCon Home screen,
tap the menu icon, and then tap
FAN MANAGEMENT
> Fan Name >
Fan Settings
. The Modbus address is displayed at the
bottom of the screen. Tap
CHANGE
if you want to change the address, and then follow the instructions on the screen.
3.
Record the Modbus address. You will need to know the address when setting up and using the BACnet adapter.
4. Disconnect AC mains power from the fan via the twist-lock plug or other means.
5. Install the Modbus cable into the VFD enclosure with the appropriate fitting, such as a cord grip connector or EMT connector.
6.
Disconnect the controller cable from the CAT5 power tap, and then disconnect
the power tap from the VFD's RJ45 port and low voltage terminals. Refer to
the illustration on the right.
7.
Connect the data cable as shown on the following page. Pay special attention
to the polarity for MBA, MBB.
Note: It is helpful to plug the data port screw
terminal block into the drive prior to termination. BE MINDFUL of the tightening
torque. The VFD's data port can be damaged by excessive force applied on
the screw heads. The cable shield's drain lead and reference line (if present)
connect to the VFD's Analog Common terminal (ACM).
8. Reinstall the VFD enclosure cover and reapply power to the fan.
Note: The following actions will result in a communications loss and subsequent
fan shutdown:
• Gateway power loss
• Modbus data loop wire break
Alternatively, the remote operator station can be installed.
Fan parameters
All parameters for using Delta E Series VFDs with the BACnet adapter are
programmed at the factory except for fan addresses. If you want to view or modify
fan parameters, you will need to reconnect the BAFCon controller and contact
Customer Service. Big
Ass
Fans recommends storing the BAFCon controller, CAT5
power tap, and controller cable near the fan in case you need to reconnect them.
To view or modify fan parameters, tap the menu icon on the BAFCon Home
screen, and then tap
FAN MANAGEMENT
> Fan Name >
Diagnostics
>
VFD
Parameters
. Follow the instructions on the screen for contacting Customer
Service.
READY
RUN
FAULT
3
2
1
3
2
1
ON
ON
RA RB R C
AVI
NPN
PNP
PNP
ACI
ACI
CAT5 Power Tap
(REMOVE after changing
fan Modbus address)
