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9 - Big
Ass
Fans Electrical Installation (cont.)
9.6 - Setup and wiring: Lenze SMVector VFDs (Powerfoil
®
8 and Basic 6
®
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. Darkened display LEDs are not an
indication of safe voltage levels.
WARNING: Before making parameter changes, ensure fan is stopped and jumper wires are removed.
Parameter
Default setting
Action
P100
: S
tart Stop Control
3
Confirm set to 3
P101: Speed Reference
0
Confirm set to 0
P116: Remote Speed Reference
6
Confirm set to 6
P122
: T
erminal 13B Function
9
Confirm set to 9
P199: Program Selection
0
Confirm set to 0
P400: Communication Protocol
2
Confirm set to 2
P410
: Modbus Address
1
Set to 1–32 (must be unique to fan)
P411: Baud Rate
2
Confirm set to 2
P412
:
Communication Format
2
Confirm set to 2
P422: Network Stop
2
Confirm set to 2
P425: Communication Timeout
30.0 sec
Confirm set to 30.0 sec
P426: Timeout Action
4
Confirm set to 4
To confirm or change fan parameters:
1.
Press on the wall controller to enter programming mode.
2.
Press or until the desired parameter is displayed.
3.
Press to view the current setting.
4. Press or to change the setting (if necessary).
5. Press to save the change.
Repeat the steps above to confirm or change parameters. When the last change is completed, the controller will return to the normal
operational screen.
Final connections
1.
Disconnect AC mains power from the fan via the included rotary disconnect or other means, and then wait for a darkened LED
display on the fan controller.
2.
Remove the lower VFD cover and install the Modbus cable into the main drive housing with the appropriate fitting, e.g., cord grip
connector or EMT connector.
3.
Install jumpers between terminals 12, 1, and 13B.
4. Connect the data cable as shown on the following page. Pay special attention to the polarity for Data(+) and Data(-). The cable's
shield and drain line (if present) land on terminal 2 (DC Common) on the VFD.
5. Reinstall the VFD’s lower cover while being mindful of the bare drain leads slack (if present).
Incidental contact between the drain lead
and the VFD’s input/output leads can result in catastrophic damage to all other devices on the Modbus loop!
6.
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
M
M
M
