คุณสมบัติของ Inverters-FREQROL การบำรุงรักษาอุปกรณ์
Conveyor belt fault detection
กระแสไฟฟ้า detection ฟังก์ชัน
- Faults caused by deteriorated motor shaft (increased load) or cracks in the belt (decreased load) can be detected through the motor output กระแส.
- If the output กระแส exceeds the predetermined value, a signal is output to inform the user of the faulty อุปกรณ์.
- By using parameter settings, the inverter can be stopped when a signal is output at the point a fault occurs.
▪ Fault detection and warning output
| Pr. | Name | รายละเอียด |
|---|---|---|
| 150 | เอาต์พุต กระแส detection level | Set the reference value of normal load characteristics. |
| 152 | Zero กระแส detection level | Set the maximum frequency of the load characteristics fault detection ช่วง. |
| 190 to 196 | เอาต์พุต terminal ฟังก์ชัน selection*1 |
When "12" is set, the Y12 signal is output if the output กระแส exceeds the setting value of Pr.150. |
| When "13" is set, the Y12 signal is output if the output กระแส falls below the setting value of Pr.152. |
*1Set Pr.167 accordingly to stop the inverter when a signal is output due to a fault.
〈Applicable models〉
Fan and pump fault detection
Load characteristics fault detection
- The relationship between the ความเร็ว and torque under normal operation is recorded. (Automatic data acquisition is possible.)
- During actual operation, motor torque is detected and a warning is output if the load exceeds or falls below the predetermined values.
- It is possible to activate the cleaning ฟังก์ชัน by using fault detection as a trigger.
▪ Fault detection and warning output
| Pr. | Name | รายละเอียด |
|---|---|---|
| 1481 to 1485 | Load characteristics load reference 1 to 5 | Used to set the reference value of normal load characteristics. |
| 1486 | Load characteristics maximum frequency | Used to set the upper frequency limit of the load characteristics fault detection ช่วง. |
| 1487 | Load characteristics minimum frequency | Used to set the lower frequency limit of the load characteristics fault detection ช่วง. |
| 1488 | Upper limit warning detection width | Used to set the detection ช่วง when the upper limit load fault warning is output. |
| 1489 | Lower limit warning detection width | Used to set the detection ช่วง of when the lower limit load fault warning is output. |
| 1490 | Upper limit fault detection width | Used to set the detection ช่วง of when output is shut off when the upper limit load fault occurs. |
| 1491 | Lower limit fault detection width | Used to set the detection ช่วง of when output is shut off when the lower limit load fault occurs. |
〈Applicable models〉
Cleaning ฟังก์ชัน
Dirt and foreign matter on the impellers of fans and pumps can be removed by repeating forward/reverse rotation and stopping of the motor.
This ฟังก์ชัน (working together with the load characteristics fault detection ฟังก์ชัน) can also be started automatically when overload is detected.
This ฟังก์ชัน is intended for uses in which reverse rotation will not cause problems.
〈Applicable models〉
Inverter life diagnosis
Life diagnosis ฟังก์ชัน
The degree of deterioration of the main circuit capacitor, การควบคุม circuit capacitor, and inrush กระแส limit circuit can be monitored.
With inverter self-diagnostics, a warning when parts have reached their service life is output so that parts or inverters can be replaced before faults
occur.
| Part | How service life is checked | Judgment level | Replacement method |
|---|---|---|---|
| Main circuit capacitor |
With the motor connected but not running, DC voltage is applied to the motor at inverter power OFF and the capacitor's capacity is measured. |
Below 85% of the capacitor's original capacity. (10-year service life) |
Replaced by our after service team (contact your sales representative) |
| Control circuit capacitor |
The life is calculated from the energization time and temperature, and is จำนวนed down from 100%. |
Capacitor service life below 1 year. (10-year service life) |
|
| Inrush กระแส limit circuit |
The number of contact ON times is จำนวนed down from 100%. |
Capacitor service life below 1 year. (10-year service life) |
|
| Cooling fan | The ความเร็ว of the cooling fan is constantly monitored and any reduction in ความเร็ว is detected. |
When fan ความเร็ว falls below 50%. (10-year service life) |
User replaceable |
〈Applicable models〉
Using FR Configurator2, easy-to-use software assisting anything from setup to maintenance, much more useful ฟังก์ชัน are available for users.
A free trial version with limited ฟังก์ชัน is available for download via the
following link.
Parts service life data is displayed in a dedicated window.
A warning icon is shown in the alarm field of the parts recommended for replacement.
paired with a GOT
enclosure
By connecting a computer to the USB port on the front panel of the GOT, the
service life of multiple inverters can be checked using FR Configurator2 via the GOT.