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UNIFREM 400.
VQFREM 400 are vector control frequency converters using HDDis of the latest generation. They have been specially designed
for the most difficult technical drives applications with induction
motors supplied by 3 × 400 V, motor power up to 315 kW.
VQFREM 400 family in all versions is compliant with EU standards and regulations:
| EMC (Electromagnetic compatibility): |
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| EMC (Electromagnetic compatibility): STN EN 61800-3 |
| Is compliant with ES Directives: 89/336/EHS, 91/263/EHS, 92/31/EHS, 93/68/EHS, 93/97/EHS |
Conforms to SR Government Regulations: 394/1999 Z.z., 159/2002 Z.z.,301/2002 Z.z.
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| Product safety and conformity: |
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| EMC (Electromagnetic compatibility): EN 50 178, EN 601 46-1 ÷ 3 |
| Conforms to SR Government Regulations: 392/1999 Z.z., 149/2002 Z.z., 303/2002 Z.z. |
| Is compliant with ES Directives: 73/23EHS, 93/68EHS |
Contents:
VQFREM basic
Optional accessories
Technical data
General technical data
User guide
Technical drawings
Software
Library for ELCAD
VQFREM basic
- electrical enclosure: IP43 protection, input fuses, ventilating unit
- real time function: enables precise monitoring of converter operation in time, e.g. fault specification
- built-in control panel "CP": the panel contains alphanumeric 4
x 20 characters display and 9-buttons keypad. The display displays
operating instructions in Slovak language and English and the keypad
is used for parameters setting and changing
- RI suppression filter class A1 (according to STN EN 61800-3)
- commutating reactor "CR": integrated in the frequency converter circuit to reduce current harmonic distortion of power supply. It lengthens the operating life of power capacitors of a converter.
- inputs: 3 analogue inputs, 6 programmable binary inputs
- outputs: 2 analogue current outputs: 0 ÷ 20 mA (4 ÷ 20 mA) for
output frequency (current) indication
- 3 programmable output relays 230 V / 3 A (e.g. fault, READY...)
- two sets of adjusting parameters
- setting of desired value: binary 8 speeds, reverse, reset, analogue
signal 0 ÷ 10 V, 2 ÷ 10 V, or 0 ÷ 20 mA, 4 ÷ 20 mA, potentiometer,
external motor - potentiometer
- adjustable acceleration time (ramp-up time) and deceleration time (ramp-down time)
- PID process regulator (also reversal function)
- automatic parking of a converter - if analogue input signal is sufficient and the regulation uses PI process regulator
- energetic input power optimalization
- fault history (the converter remembers the latest 10 faults)
- U/f characteristic for constant and variable motor torque
- motor braking - 3 braking modes
- measurement of: fOUT, RPM, UOUT, UIN,
IOUT, analogue input
- modern type SkiiP, SkiiM, IPM - semiconductors, which have lower losses than IGBT. They incorporate an input rectifier and an output inverter and provide complex converter protection (protection against short circuit between output phases, ground faults, overtemperature).
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Optional accessories
-
EMC (Electromagnetic compatibility):
| PROFIBUS DP | - Vonsch option module PROFIBUS DP enables to control maximum of 99 frequency converters.
ID Number: 077 B HEX |
| LON | - enables frequency converter control via electric power network |
| GSM | - enables frequency converter control via telecommunication network |
| Ethernet | - enables frequency converter operation in industrial networks (communication network for industrial applications) |
- external wall control panel "EWCP": it should be wall mounted (the doors
of electrical enclosure). EWCP uses RS 422 system to communicate with
the converter and can be mounted up to 100m from the converter. The
panel contains 4-lines alphanumeric display (displaying in Slovak
and English) and 9-buttons keypad.
- external manual control panel "EMCP": it is designed for manual control of
a converter. EMCP enables parameters indication and setting. In addition,
it enables that the parameters can be copied from one converter to
another. The rest holds as for EWCP.
- external remote control panel "ERCP": it communicates with the converter up to 8m distance via optical signal. ERCP enables parameters indication and setting. In addition, it enables that the parameters can be copied from one converter to another in a case of difficult access to the converter (high voltage, converter's high mounting position, various mechanical constraints). The rest holds as for EWCP.
- external door control panel "EDCP": it should be mounted on the doors of electrical enclosure. The panel is mounted on the front doors of electrical enclosure so as only membranous keypad is visible and reachable from outside of electrical enclosure. IP55 protection is ensured by this solution. The rest holds as for EWCP.
- output reactor "OR1" (filter du/dt): it eliminates cable capacitance on frequency converter. Output reactor should be connected to the output terminals U, V, W.
- sinusoidal output filter "SF1" - ensures converter output voltage to reach the desired sine waveform. If there is minimum radio interference emission demand (e.g. theatres), screened interconnecting cables between a converter and a motor do not have to be used when using sinusoidal output filter. Sinusoidal output filter completely eliminates overvoltage spikes on output (motor) terminals. It can be connected directly to the output terminals of frequency converter. If using sinusoidal output filter, it is necessary to set sampling frequency (parameter 9.1.1) rating from 5 ÷ 10 kHz and frequency converter cannot operate in vector control mode.
- higher degree of protection - e.g. IP55, IP66 (frequency converter is built-in electrical enclosure)
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Technical data
Power and current:
| Converter's losses: |
temperature losses of frequency converter at sampling frequency 1,5 kHz |
| Nom. output current of the converter: |
nominal and maximum permanent output current of the converter |
| Motor power: |
recommended maximum power of a motor connectable to converter's output (holds for 4 - pole motors) |
| The type of the converter |
Motor output rating Pnom [kW] |
Converter's losses at 2.5 kHz (kW) |
Nominal output current of the converter In [A] |
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| VQFREM 400 250 | 250 | 7,5 | 490 |
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| VQFREM 400 315 | 315 | 8,7 | 590 |
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| VQFREM 400 400 | 400 | 10,8 | 700 |
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| VQFREM 400 500 | 500 | 16 | 860 |
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| VQFREM 400 630 | 630 | 18,7 | 1100 |
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Hore
General technical data
| Input voltage range: |
400 V ± 10% |
| Input frequency: |
47 - 63 Hz |
| Power factor: |
Cos Φ1N > 0,98 |
| Converters efficiency: |
> 0,975 |
| Output frequency range: |
0 Hz ÷ 300 Hz |
| Control system: |
2 × 32 bit. µP DSP - PWM - HDDiS |
| Analogue inputs: |
0 ÷ 20 mA (165 Ω), 4 - 20 mA (165 Ω), 0 - 10 V, 2 - 10 V, potentiometer, motor potentiometer; output voltage + 10 V (short circuit protection) max. 10 mA. Potentiometer 1 kΩ to 10 kΩ |
| Control inputs and interface: |
6 binary inputs for multi-level speed selection, or for remote motor potentiometer, reverse, reset, voltage + 24 V (short circuit protection), max. 100 mA |
| Analogue outputs: |
0 ÷ 20 mA, 4 ÷ 20 mA max. 750 Ω |
| Starting motor torque: |
to 200 % Mn (according to the type of motor) |
| Electronic protection against: | overcurrent, overvoltage, undervoltage, short circuit protection, ground fault protection, converter overtemperature, motor overtemperature |
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| Ventilation: |
fan cooling |
| Installation altitude: |
< 1000 m above sea level, each 100 m above 1000 m above sea level causes decrease in converter's power by 1 % |
| Relative air humidity: |
< 90 % non-condensing, dewing not permissible |
| Permissible ambient temperature during operation: |
+1°C ÷ +40°C |
| Permissible ambient storage temperature: | -25°C ~ +50°C |
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