More Information
Features:
- Autoboost
- Programmable Operator Menu
- (8) Parameter Sets
- Speed Search
- (11) Parameter Groups
- DC-Braking
The KEB F4-C Series Frequency Inverters consist basically of a mains rectifier, the DC-link and an inverter at the output. The mains rectifier consists of an uncontrolled single or three-phase bridge connection, the single-phase design is restricted to small powers. It converts the AC-voltage of the mains into a DC-voltage, which is smoothed by the DC-link capacitor, thus in the ideal case (inverter unloaded) the DC-link is charged with a voltage of U
ZK = √2 -U
N.
Since during the charging of the DC-link capacitor very high currents flow for a short time which would lead to the tripping of the input fuses or even to the destruction of the mains rectifier, the charging current must be limited to a permissible level. This is achieved by using an inrush current limiting resistor in series to the capacitor. After the charging of the capacitor is completed the limiting resistor is bridged, for example, by a relay and is therefore only active at the switch-on of the inverter.
As the smoothing of the DC-link voltage requires a large capacity, the capacitor still has a high voltage for some time after the disconnection of the inverter from the mains.
The actual task of the frequency inverter, to produce an output voltage variable in frequency and amplitude for the control of the three-phase AC motor, is taken over by the converter at the output. It makes available a 3-phase output voltage according to the principle of the pulse-width modulation, which generates a sinusoidal current at the three-phase asynchronous motor.
The KEB 12.F4.C3D-3420/1.4 Frequency Inverter may still be available for purchase and support from Artisan Technology Group beyond End-Of-Life (EOL) by the manufacturer (OEM).
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KEB 12.F4.C3D-3420/1.4 Frequency Inverter Specs
| General |
| Manufacturer | KEB / Combivert |
| Model | 12.F4.C3D-3420/1.4 |
| Condition | Used and in Good Condition |
| Product Family | F4-C Series, F4 C, F4C |
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Artisan Scientific Corporation dba Artisan Technology Group is not affiliated with or a distributor for KEB. The depiction, description, or sale of products featuring names, trademarks, brands, and logos is for identification and/or reference purposes only and does not indicate any affiliation with or authorization by any rights holder.
Frequency Inverter Price & Specs