Drives have three analog input terminals, terminals A1, A2, and A3. H3 parameters select the functions set to these analog input terminals and adjust signal levels.

Table 1 shows the functions that you can set to analog input terminals. Use H3-02, H3-06, and H3-10 [MFAI Function Selection] to set functions.

Table 1. MFAI Setting Values

Setting Value

Function

Ref.

0

Frequency Reference

0: Frequency Reference

1

Frequency Gain

1: Frequency Gain

2

Auxiliary Frequency Reference 1

2: Auxiliary Frequency Reference 1

3

Auxiliary Frequency Reference 2

3: Auxiliary Frequency Reference 2

4

Output Voltage Bias

4: Output Voltage Bias

5

Accel/Decel Time Gain

5: Accel/Decel Time Gain

6

DC Injection Braking Current

6: DC Injection Braking Current

7

Torque Detection Level

7: Torque Detection Level

8

Stall Prevent Level During Run

8: Stall Prevent Level During Run

9

Output Frequency Lower Limit

9: Output Frequency Lower Limit

B

PID Feedback

B: PID Feedback

C

PID Setpoint

C: PID Setpoint

D

Frequency Bias

D: Frequency Bias

E

Motor Temperature (PTC Input)

E: Motor Temperature (PTC Input)

F

Not Used

F: Not Used

10

Forward Torque Limit

10: Forward Torque Limit

11

Reverse Torque Limit

11: Reverse Torque Limit

12

Regenerative Torque Limit

12: Regenerative Torque Limit

13

Torque Reference / Torque Limit

13: Torque Reference / Torque Limit

14

Torque Compensation

14: Torque Compensation

15

General Torque Limit

15: General Torque Limit

16

Differential PID Feedback

16: Differential PID Feedback

1F

Not Used

1F: Not Used

30

DWEZ Analog Input 1

30: DWEZ Analog Input 1

31

DWEZ Analog Input 2

31: DWEZ Analog Input 2

32

DWEZ Analog Input 3

32: DWEZ Analog Input 3
Note:

All analog input scaling uses gain and bias for adjustment. Set the gain and bias values correctly.

 

Example Analog Input Settings

Setting of Terminal A1

Frequency Reference

Frequency reference with the gain setting adjusted

  • H3-02 = 0 [Terminal A1 Function Selection = Frequency Reference]

  • H3-03: 200.0 [Terminal A1 Gain Setting = 200%]

  • H3-04 = 0.0 [Terminal A1 Bias Setting = 0.0%]

  • When you input a 10 V signal, the frequency reference will be 200%.

  • When you input a 5 V signal, the frequency reference will be 100%.

When you input a 5 V or more signal, E1-04 [Maximum Output Frequency] will limit the drive output and the frequency reference will be 100%.

Frequency reference with the negative number bias set

  • H3-02 = 0 [Frequency Reference]

  • H3-03 = 100.0 [100.0%]

  • H3-04 = -25.0 [-25.0%]

  • When you input a 0 V signal, the frequency reference will be -25%.

  • When H3-01 = 0 [Terminal A1 Signal Level Select = 0 to 10V (Lower Limit at 0)]:

    • When you input a 0 V to 2 V signal, the frequency reference will be 0%.

    • When you input a 2 V to 10 V signal, the frequency reference will be 0% to 100%.

  • When H3-01 = 1 [-10 to +10V (Bipolar Reference)]:

    • When you input a 0 V to 2 V signal, it enables signals of positive and negative polarities and the motor rotates in reverse.