WEG CFW-11 Series - Electronics;General Data

Technical Specications
8
CFW-11 | 8-7
8.2 ELECTRONICS/GENERAL DATA
Control Method Voltage source
Type of control:
- V/f (Scalar)
- VVW: 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 (switching frequency of 2.5 kHz and 5 kHz), 0.25 ms (switching frequency = 2 kHz)
- flux regulator: 0.4 ms (switching frequency of 2.5 kHz and 5 kHz), 0.5 ms (switching frequency = 2 kHz)
- speed regulator / speed measurement: 1.2 ms
Output
Frequency
0 to 3.4 x rated motor frequency (P0403). The rated frequency is programmable from 0 Hz to 300 Hz
in the scalar mode and from 30 Hz to 120 Hz in the vector mode
Output frequency limits as a function of the switching frequency:
125 Hz (switching frequency = 1.25 kHz)
200 Hz (switching frequency = 2.0 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
VVW:
Regulation: 1 % of the rated speed
Speed variation range: 1:30
Sensorless (P0202 = 3 asynchronous motor):
Regulation: 0.5 % of the rated speed
Speed variation range: 1:100
Vector with Encoder (P0202 = 4 asynchronous motor or P0202 = 6 permanent magnet):
Regulation:
±0.01 % of the rated speed with a 14-bits analog input (IOA)
±0.01 % of the rated speed with a digital reference (Keypad, Serial, Fieldbus, Electronic
Potentiometer, Multispeed)
±0.05 % of the rated speed with a 12-bits analog input (CC11)
Speed variation range: 1:1000
Torque
Control
Range: 10 to 180 %, regulation: ±5 % of the rated torque (P0202 = 4, 6 or 7)
Range: 20 to 180 %, regulation: ±10 % of the rated torque (P0202 = 3, above 3 Hz)
Inputs
(CC11 Board)
Analog 2 isolated differential inputs; resolution of AI1: 12 bits, resolution of AI2: 11bits + signal, (0 to 10) V,
(0 to 20) mA or (4 to 20) mA, Impedance: 400 kΩ for (0 to 10) V, 500 Ω for (0 to 20) mA or
(4 to 20) mA, programmable functions
DIGITAL
6 isolated digital inputs, 24 Vdc, programmable functions
Outputs
(CC11 Board)
Analog 2 isolated analog outputs, (0 to 10) V, R
L
≥ 10 kΩ (maximum load), 0 to 20 mA / 4 to 20 mA (R
L
≤ 500 Ω)
resolution: 11 bits, programmable functions
Relay
3 relay outputs with NO/NC contacts, 240 Vac, 1 A, programmable functions
Safety Protection Output overcurrent/short-circuit
Under/Overvoltage
Phase loss
Overtemperature
Braking resistor overload
IGBTs overload
Motor overload
External fault/alarm
CPU or memory fault
Output phase-ground short-circuit
Integral
Keypad
(HMI)
Standard
Keypad
9 operator keys: Start/Stop, Up arrow, Down arrow, Direction of rotation, Jog, Local/Remote, Right
soft key and Left soft key
Graphical LCD display
View/edition of parameters
Indication accuracy:
- current: 5 % of the rated current
- dc link voltage: 3 % for frame sizes B, C, D and E; 5 % for frame sizes F, G and H
- speed resolution: 1 rpm
Possibility of remote mounting