Transcript
G9/H9 Application Guideline 11.1
Trim Pot Introduction A trim pot application allows the user to add or subtract a frequency (trim) to a primary frequency command. The primary frequency command can be controlled by the following: The VFD Keypad A 4-20mA signal (transducer or PLC) A 0-10Vdc signal (Potentiometer or PLC) A digital preset speed input (switch input) An automation network using an optional communication card. The trim signal can by controlled by the following: a potentiometer (RX terminal, +/- trim possible, RR terminal, + trim only) a 4-20mA or 0-10Vdc signal (VI/II, + trim only) In this application guideline a 4-20mA signal on the VI/II terminal will provide the main frequency command, a potentiometer on the RX terminal will control the trim signal. terminal.
Connections
Figure 1: Example of trim pot connection Page: 1 of 2 ©2011 Toshiba International Corporation
ST to CC must be connected. Otherwise the drive is not enabled and will display “OFF”. F must be closed to CC to provide a forward run command. For a reverse run, close R to CC. When using a 4-20mA signal, IICC must be shorted to CC for the unit to work correctly.
Programming PARAMETER
F004 F201 F202 F203 F204 F660 F216 F217 F218 F219 F012
MENU PATH Fundamental-Standard Mode Selection-Frequency Mode 1 Frequency-Speed Reference Setpoints-VI/II (V/I) Point 1 Setting Frequency-Speed Reference Setpoints-VI/II (V/I) Point 1 Frequency Frequency-Speed Reference Setpoints-VI/II (V/I) Point 2 Setting Frequency-Speed Reference Setpoints-VI/II (V/I) Point Frequency Feedback-Override Control-Adding Input Selection Frequency-Speed Reference Setpoints-RX Input Point 1 Setting Frequency-Speed Reference Setpoints-RX Input Point 1 Frequency Frequency-Speed Reference Setpoints-RX Input Point 2 setting Frequency-Speed Reference Setpoints-RX Input Point 2 Frequency Fundamental-Frequency Settings-Upper-Limit Frequency
DEFAULT
NEW VALUE
2-RR
1-VI/II
0%
20%
0.00 Hz
0.00 Hz
100.0%
100.0%
60.0 Hz
60.0 Hz
Disabled
3-RX
0.00%
50%
0.00Hz
0.00 Hz
+100%
+100%
60.00Hz
5.00 Hz
ASD Dependant
65.0 Hz
Notes F004: Sets where the primary frequency reference will come in to the drive, in this case VI/II. F201-F204: Are used to scale the VI/II terminal. F660: Sets the source of trim input. F216-F219: Are used to scale the RX terminal. In this example the RX is scaled to provide +/- 5Hz to the primary frequency commanded by VI/II F012: The upper limit frequency is adjusted to allow the 5 Hz trim above 60 Hz. Revision History: Rev. 1 0
Date
Written/Revised Approved By Description By 8/10/2012 Corbin Vader Joshua Austin Formatting changes. 8/2/2011 Chris Jones Eric Houg Original For additional assistance, please contact Toshiba Adjustable Speed Drive Marketing Dept. at (800) 872-2192. Page: 2 of 2 ©2011 Toshiba International Corporation
