Preparing for Operation
Chapter 4
n11
Frequency Reference 1
Setting range 0.0 to 400 (Hz) Factory setting 6.0 (Hz)
n12
Frequency Reference 2
Setting range 0.0 to 400 (Hz) Factory setting 0.0 (Hz)
• These constants are used to set reference frequency values.
• The unit of setting is as follows:
0.0 to 99.9 (Hz): 0.1 (Hz)
100 to 400 (Hz): 1 (Hz)
• The reference frequency value can be changed even during operation. To change the
reference frequency value when the Inverter is being operated with the Digital Opera-
tor, light the FREF indicator with the Mode Key first, press the Increment or Decrement
Key to change the value, then press the Enter Key.
• If one of values 2 to 5 is set in n02 (operation mode selection), the n11 setting is disre-
garded and control input (voltage or current) becomes valid.
• When using n12 (frequency reference 2), always set “4” (multi-step speed command)
in n06 (multi-function input selection). The multi-step speed command is always valid
regardless of the n02 setting.
• If the n12 setting is to be changed during operation, perform the above procedure
when the multi-step speed command (S1) is ON.
Example of Multi-Step Speed Operation
setting
Output frequency
setting
Forward/stop (SF)
Multi-step speed
command (S1)
4-16
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