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ASDA-A3

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Control Mode

6.6.3 Analog monitoring

You can find the required voltage signal with analog monitoring. The servo drive provides two

analog channels, which wiring information is detailed in Chapter 3

Refer to Chapter 8 for detailed descriptions of the relevant parameters.

Parameter

P0.003

P1.003

P1.004

P1.005

P4.020

P4.021

Function

Analog output monitoring

Encoder pulse output polarity

MON1 analog monitor output proportion

MON2 analog monitor output proportion

Analog monitor output (Ch1) - offset compensation value

Analog monitor output (Ch2) - offset compensation value

Example:

To specify a motor speed of 1,000 rpm, which corresponds to analog voltage output of 8V with

the maximum speed of 5,000 rpm, the setting is as follows:

P1.004 = Required speed ×100% = 1000 rpm ×100% = 20%

Maximum speed

5000 rpm

You can calculate the voltage output corresponding to the current motor speed with the

following formula.

Motor speed

300 rpm

900 rpm

MON1 analog monitoring output

MON1 = 8V

×

Current speed

Maximum speed ×P1.004

×100%

=

8V

×

300 rpm

5000 rpm×

20

×100% = 2.4V

100

100

MON1 = 8V

×

Current speed

Maximum speed ×P1.004

×100%

=

8V

×

900 rpm

5000 rpm×

20

×100% = 7.2V

100

100

Voltage drift:

When voltage drift occurs, the voltage level defined as zero voltage is different from the set zero

point. To fix this problem, you can use DOF1 (P4.020) and DOF2 (P4.021) to calibrate the

voltage output offset. The voltage level for analog monitoring output is ±8V. If the output voltage

exceeds the range, it is limited within ±8V. The resolution is approximately 10 bits, which is

equivalent to 13 mV/LSB.

6

8V

DOF

-8V

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