Troubleshooting
Troubleshooting Maintenanceand |
| Symptom/condition | Probable Cause |
| Solution | ||
|
|
|
|
|
|
| |
|
|
|
|
|
| ||
|
| speed). | • If using the analog input, is the | • | (reduces output as needed). | ||
|
|
|
|
| Check the wiring. | ||
|
|
|
|
| current or voltage at [O] or [OI]? | • Check the potentiometer or | |
|
|
|
|
|
|
| signal generating device. |
|
|
|
|
| • Is the load too heavy? | • | Reduce the load. |
|
| The motor speed will not reach |
| • Heavy loads activate the | |||
|
| the target frequency (desired |
|
| overload restriction feature | ||
|
|
|
|
|
|
|
|
|
|
|
|
| • Is the inverter internally limiting | • | Check max frequency |
|
|
|
|
| |||
|
|
|
|
| the output frequency? |
| setting (A_04) |
|
|
|
|
|
| • Check frequency upper limit | |
|
|
|
|
|
|
| setting (A_61) |
|
|
|
|
|
|
| |
|
|
|
|
| • Is the load fluctuation too great? | • Increase the motor capacity | |
|
|
|
|
|
|
| (both inverter and motor). |
|
| The rotation is unstable. | • Is the supply voltage unstable? | • Fix power supply problem. | |||
|
| • Is the problem occurring at a partic- | • | Change the output | |||
|
|
|
|
| ular frequency? |
| frequency slightly, or use the |
|
|
|
|
|
|
| jump frequency setting to |
|
|
|
|
|
|
| skip the problem frequency. |
|
|
|
|
| |||
|
| The RPM of the motor does not | • Is the maximum frequency setting | • Verify the V/f settings match | |||
|
| match the inverter output | A_04 correct? |
| motor specifications. | ||
|
| frequency setting. | • Does the monitor function D_01 | • Make sure all scaling (such | |||
|
|
|
|
| |||
|
|
|
|
| display the expected output |
| as A_11 to A_14) is |
|
|
|
|
| frequency? |
| properly set. |
|
|
|
|
|
|
| |
|
|
|
|
| • Was power turned OFF after a | • Edit the data and press the | |
|
|
|
|
| parameter edit but before pressing |
| Store key once. |
|
|
|
| No downloads | the Store key? |
|
|
|
|
|
|
|
|
| |
|
|
|
| • Edits to data are permanently | • Wait six seconds or more | ||
|
| Inverter data | have occurred. | ||||
|
|
| stored at power down. Was the time |
| before turning power OFF | ||
|
| is not |
|
| from power OFF to power ON less |
| after editing data. |
|
| correct. |
|
| than six seconds? |
|
|
|
|
|
|
|
|
| |
|
|
|
| A download to | • Was the power turned OFF within | • Copy the data to the inverter | |
|
|
|
| the inverter was | six seconds after the display |
| again, and keep power ON |
|
|
|
| attempted. | changed from REMT to INV? |
| for six seconds or more after |
|
|
|
|
|
|
| copying. |
|
|
|
|
|
|
| |
|
| A parameter | True for certain | • Is the inverter in Run Mode? Some | • Put inverter in Stop Mode | ||
|
| parameters | parameters cannot be edited during |
| (press the Stop/reset key). | ||
|
| will not |
|
| |||
|
|
|
| Run Mode. |
| Then edit the parameter. | |
|
| change after |
|
| |||
|
|
|
|
|
| ||
|
| an edit |
| True for all | • If you’re using the [SFT] intelligent | • Change the state of the SFT | |
|
| (reverts to |
| parameters | input (software lock |
| input, and check the B_31 |
|
| old setting). |
| ||||
|
|
| the [SFT] input ON? |
| parameter (SFT mode). | ||
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|