b1-01: Frequency Reference Selection 1

Use the keypad to enter the frequency reference.

Use and on the keypad to change the frequency reference.

Use MFAI terminals A1 and A2 to input an analog frequency reference with a voltage or current input signal.

• Voltage Input

  Refer to Table 1 to use a voltage signal input to one of the MFAI terminals.

  Table 1. Frequency Reference Voltage Input

  Terminal	Terminal Signal Level	Parameter Settings				Note
  		Signal Level Selection	Function Selection	Gain	Bias
  A1	0 - 10 V (Lower Limit at 0)	H3-01 = 0	H3-02 = 0 [Frequency Reference]	H3-03	H3-04	-
  	0 - 10 V (Without Lower Limit)	H3-01 = 1
  A2	0 - 10 V (Lower Limit at 0)	H3-01 = 0	H3-10 = 0 [Frequency Reference]	H3-11	H3-12	Set DIP switch S1 to “V” for voltage input.
  	0 - 10 V (Without Lower Limit)	H3-01 = 1

  

  Note:

  You can also use this diagram to wire terminal A2.

• Current Input

  Refer to Table 2 to use a current signal input to one of the MFAI terminals.

  Table 2. Frequency Reference Current Input

  Terminal	Signal Level	Parameter Settings				Note
  		Signal Level Selection	Function Selection	Gain	Bias
  A2	4 - 20 mA	H3-09 = 2	H3-10 = 0 [Frequency Reference]	H3-11	H3-12	Set DIP switch S1 to “I” for current input.
  	0 - 20 mA	H3-09 = 3

  

Changing between Master and Auxiliary Frequency References

Use the multi-step speed reference function to change the frequency reference input between terminals A1 and A2.

Use MEMOBUS/Modbus communications to enter the frequency reference.

Use a communications option connected to the drive to enter the Run command.

Refer to the instruction manual included with the option to install and set the option.

Use a pulse train signal from the pulse train input terminal RP to enter the frequency reference.

Do this procedure to make sure that the pulse train signal is operating correctly.

1. Set b1-01 = 4, H6-01 = 0 [Terminal RP Pulse Train Function = Frequency Reference].

2. Set H6-02 [Terminal RP Frequency Scaling] to the number of pulses that determine 100% of the frequency reference.

3. Enter a pulse train signal on the terminal RP and make sure that the keypad shows a correct frequency reference.