How to estimate the maximum input current of a servo drive?
Last modified by Devin Chen on 2024/09/26 13:59
Method 1: Refer to the comparison in the table below.
| Servo Drive Output Current (A) | Servo Drive Output Voltage (V) | Servo Drive Output Power (W) | Efficiency | Power factor | Input current (single phase) (A) | Input current (three phase) (A) | Recommended power cable diameter（mm²） |
|---|---|---|---|---|---|---|---|
| 3 | 220 | 100 | 0.7 | 0.8 | 0.90 | 0.52 | 0.5 |
| 10 | 400 | 3.61 | 2.08 | 0.75 | |||
| 14 | 750 | 6.76 | 3.91 | 1.5 (For single phase) 1 (For three phase) | |||
| 16 | 1800 | 16.23 | 9.37 | 4 (For single phase) 2 (For three phase) | |||
| 21 | 2200 | 19.84 | 11.46 | 4 (For single phase) 2.5 (For three phase) | |||
| 25 | 2600 | 23.45 | 13.40 | 6 (For single phase) 4 (For three phase) | |||
| 30 | 3000 | 26.79 | 15.46 | ||||
| 21 | 380 | 3000 | 9.04 | 2 | |||
| 30 | 4500 | 13.57 | 4 | ||||
| 40 | 6000 | 18.09 | 6 | ||||
| 50 | 7500 | 22.61 |
Method 2: Use a formula for the calculation.
Given:
Output power: Pout
Input voltage: Uin
Efficiency: η=0.7
Power factor: PF=0.8
Formula:
For example:
The VD2-014SA1G driver is used in conjunction with the WD80M-10030S-A1G motor.
Output power: Pout =1000 W
Input voltage: Uin =220V
Efficiency: η=0.7
Power factor PF=0.8
Calculation:
