WEG CFW700 User Manual - page 66
CFW700 | 61
Technical Specifications
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8.2 ELECTRICAL/GENERAL SPECIFICATIONS
Table 8.1: Electrical/general specifications
CONTROL
METHOD
Voltage source.
Type of control:
- V/f (Scalar).
- V V W: Voltage Vector Control.
- Vector control with encoder.
- Sensorless vector control (without encoder).
PWM SVM (Space Vector Modulation).
Full digital (software) current, flux, and speed regulators.
Execution rate:
- current regulators: 0.2 ms (5 kHz).
- flux regulator: 0.4 ms (2.5 kHz).
- speed regulator / speed measurement: 1.2 ms.
OUTPUT
FREQUENCY
0 to 3.4 x rated motor frequency (P0403). The rated motor frequency
is programmable from 0 Hz to 300 Hz in the V/f and V V W modes
and from 30 Hz to 120 Hz in the vector mode.
Maximum output frequency limit according to the switching frequency:
- 125 Hz (switching frequency = 1.25 kHz).
- 250 Hz (switching frequency = 2.5 kHz).
- 500 Hz (switching frequency ≥ 5 kHz).
PERFORMANCE SPEED
CONTROL
V/f (Scalar):
Regulation (with slip compensation): 1 % of the rated speed.
Speed variation range: 1:20.
V V W:
Regulation: 1 % of the rated speed.
Speed variation range: 1:30.
Sensorless:
Regulation: 0.5 % of the rated speed.
Speed variation range: 1:100.
Vector with Encoder:
Regulation:
- ±0.1 % of the rated speed with a digital reference (keypad, serial,
fieldbus, Electronic Potentiometer, Multispeed).
- ±0.2 % of the rated speed with a 12-bits analog input.
PERFORMANCE TORQUE
CONTROL
Range: 10 to 180 %, regulation: ±5 % of the rated torque (with encoder).
Range: 20 to 180 %, regulation: ±10 % of the rated torque (sensorless
above 3 Hz).
USER’S POWER
SUPPLIES
(CC700 board)
REF
(XC1:21-24)
10 V ± 10 % power supply to be used with the potentiometer at the
analog inputs.
Maximum output current: 2 mA.
+5V-ENC
(XC1:1-8)
5 V ± 5 % power supply for the encoder.
Maximum output current: 160 mA.
+24 V
24 V ± 10 % power supply to be used with the digital inputs/outputs.
Maximum output current: 500 mA.