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9.5 - Setup and wiring: 575V–600V Delta M 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.
The following parameter changes are required prior to disconnection of the wall-mounted fan controller:
Make these parameter changes before disconnecting the wall controller cable from the VFD and proceeding with fan power down and
Modbus loop termination. If necessary, Big
Ass
Fans recommends leaving the wall controller installed as a redundant means of control.
Alternatively, the remote operator station can be installed.
WARNING: Before making parameter changes, ensure that the fan is stopped, the "RUN" LED is off, and the "STOP" LED
is illuminated on the wall controller.
To change fan parameters:
1.
Press
PROG/DATA
on the wall controller to enter programming mode.
2.
Press or if necessary to display parameter P 00.
3.
Press
PROG/DATA
to view the current setting.
4. Press or to change the setting to 3.
5. Press
PROG/DATA
to save the change.
6.
Press or to move to another parameter within group 02, or press
Mode
to exit programming mode.
Repeat the steps above to navigate to and change the remaining required parameters. When you are finished, press
Mode
to exit
programming mode and return to the normal operational screens.
Final connections
1. Disconnect AC mains power from the fan via the twist-lock plug or other means, and then wait for a darkened LED display on the
wall controller.
2. Remove the cover of the VFD enclosure and install the Modbus cable into the enclosure with the appropriate fitting, e.g. cord grip
connector or EMT connector.
3. Disconnect the existing wall controller cable from the VFD's RJ22 to RJ45 port adapter. Leave the adapter in place.
4. Connect the data cable as shown on the following page. Pay special attention to the polarity for MBA, MBB. The cable shield's drain
lead and reference line (if present) connect to the VFD's low voltage ground terminal (GND).
5. 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
Parameter
Default setting
Change to
Pr.00: First Start/Stop Reference, USB/RS485
1
3
Pr.01: First Speed Reference, USB/RS485
1
3
Pr.88: Communication Address
1
1–32 (must be unique to fan)
Pr.90: Transmission Fault Treatment; Warn and ramp to stop
3
1
Pr.91: Timeout Detection
0.0 sec (disable)
90.0 sec
Pr.92: Modbus RTU (8,E,1)
0
4
9 - Big
Ass
Fans Electrical Installation (cont.)
