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[China]
Address: No. 25 Xianxing Rd, Xianlin Industrial Park, Hangzhou, Zhejiang, China
Contact name:Molly
CHIFON ELECTRIC CO.,LIMITED |
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Grey Colored AC Motor Drives variable frequency inverter 315kw For Screw Pump
VFD Selection article
Once you’ve decided on the power and voltage, you need to consider the protection level of the variable frequency drive. If the drive is mounted in a cubicle or inside a machine, you can use an IP20 rated drive. However, if the variable frequency drive is exposed to dust, dirt or liquids in any way, IP55 or greater protection (such as IP66) will be required. If you choose this option, consider if you need a drive with built in controls and isolators; adding these externally will increase the cost of installation.
European law requires that all variable speed drives meet the requirement of various regulations relating to Electromagnetic Compatibility. In practice this means a using a VFD with a built in filter; selecting a drive with no filter is a false economy - even for export outside the EU - unless you really know what you are doing.
Nearly all variable frequency drive manufacturers offer products for different application classes. A low power VFD may be classed as general purpose, so selection is straightforward. However, larger and more specialised drives will be offered for ‘industrial’ applications or ‘pump and fan’ applications. Sometimes these are referred to as constant torque and variable torque applications respectively. The industrial (constant torque) variable frequency drives are designed to ensure the drive has high overload capability, and high torque throughout the speed range. This suits applications such as many machines, conveyers, mixers, hoists etc. It may also include Vector and Torque control features – more of that in later articles.
FPR500A Product specifications
| Item | Specifications | |
| Basic function | Over load capability | G type:150% rated current 60s;180% rated current 3s |
| P type:120% rated current 60s;150% rated current 3s | ||
| Torque boost | Auto torque boost function; Manual torque boost 0.1%~30.0% | |
| V/F curve | Linear V/F, multi-point V/F and square V/F curve(power of 1.2,1.4,1.6,1.8,2) | |
| V/F separation | 2 ways: separation and semi-separation | |
| Acc./dec curve | Straight line or S curve acceleration and deceleration mode, | |
| Four kinds of acceleration and deceleration time. Acceleration and deceleration time range from 0.0s to 6500.0s | ||
| DC braking | DC braking frequency:0.00Hz to maximum frequency. Braking time:0.0s to 36.0s | |
| Brake current value:0%-100% | ||
| Jog control | Jog frequency range:0.00Hz~50.00Hz; | |
| Jog acceleration/deceleration:0.0s~6500.0s. | ||
| Simple PLC | It can realize at maximum of 16 segments speed | |
| Basic function | Multiple segment speed running | Running via the built-in PLC or control terminal. |
| Built-in PID | It is easy to realize process-controlled closed loop control system. | |
| Auto voltage regulation (AVR) | It can keep constant output voltage automatically in the case of change of network voltage. | |
| Over-voltage/current stall control | It can limit the running voltage/current automatically and prevent frequent over-voltage/current tripping during the running process. | |
| Quick current limit | Minimize the over-current fault, protect normal operation of the AC Drive. | |
| Torque limit & control | "Excavators" characteristics, automatically limit torque during operation, prevent frequent over-current tripping. Closed loop vector mode can realize the torque control. | |
| Personalized function | Instantaneous stop non-stop | When instantaneous power off, voltage reduction is compensated through load feedback energy, which could make AC Drive keep running in a short period of time. |
| Rapid current limit | To avoid AC Drive frequent over-current fault. | |
| Timing control | Timing control function:set time range 0Min~6500.0Min. | |
| Running | Command source | Operation panel reference, control terminal reference and serial communication port reference. These channels can be switched in various modes. |
| Frequency source | There are totally eleven types of frequency sources, such as digital reference, analog voltage reference , analog current reference, pulse reference, MS speed, PLC, PID and serial port reference. | |
| Input terminal | 3 digital input terminals. | |
| 1 analog input terminals. | ||
| 1 supporting 0-10V voltage input or 0~20mA current input terminal. | ||
| Output terminal | ||
| 1 relay output terminals. | ||
| Keyboard operation | Keyboard potentiometer | Equipped with keyboard potentiometer or coding potentiometer. |
| Keyboard operation | Protection function | It can implement power-on motor short-circuit detection, input /output phase loss protection, over current protection, over voltage protection, under voltage protection, overheating protection and overload protection.
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| Environment | Using place | Indoor, and be free from direct sunlight, dust, corrosive gas, combustible gas, oil smoke, vapor, drip or salt. |
| Altitude | Below 1000m | |
| Ambient temperature | -10 ℃ to +40 ℃ (Derating use when under ambient temperature of 40 ℃ to 50 ℃) | |
| Humidity | Less than 95%RH,without condensing | |
| Vibration | Less than 5.9m/s (0.6g) | |
Technical components:
