No.

(Hex.)

Name

Description

Default

(Range)

b1-15

(01C4)

Frequency Reference Selection 2

Sets the input method for frequency reference 2.

0

(0 - 4)

This parameter is enabled when H1-xx = 2 [MFDI Function Selection = External Reference 1/2 Selection] is activated.

Note:

  • Push [LO/RE selection key] on the keypad to set the input mode to LOCAL and use the keypad to enter the frequency reference.

  • If the frequency reference is 0 Hz or less than or equal to the value set in E1-09 [Minimum Output Frequency] and the drive receives the Run command, the RUN LED on the keypad will flash. Examine the setting for the frequency reference input and enter a value more than or equal to E1-09.

0
Keypad

Use the keypad to enter the frequency reference.

Use [Up Arrow Key] and [Down Arrow Key] on the keypad to change the frequency reference.

1
Analog Input

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
    Figure 1. Example of Setting the Frequency Reference with a Voltage Signal to Terminal A1
    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
    Figure 2. Example of Setting the Frequency Reference with a Current Signal to Terminal A2

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.

2
Memobus/Modbus Communications

Use MEMOBUS/Modbus communications to enter the frequency reference.

3
Option PCB

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

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

Note:

If you set b1-15 = 3 but you do not connect an option card, oPE03 [Multi-Function Input Setting Err] will flash on the keypad.

4
Pulse Train Input

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 b1-15 = 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. The terminal set in H1-xx = 2 [MFDI Function Selection = External Reference 1/2 Selection] is activated.

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