Electronics/General Data - WEG CFW11W G2 Series User Manual

Technical Data

8.2 ELECTRONICS/GENERAL DATA

Method
Control
Output
Frequency
Speed Control
Performance
8
Torque
Control
Inputs Analog
(CC11 board)
Digital
Outputs Analog
(CC11 board)
Safety Protection
Human
Machine
Standard HMI
Interface
HMI
Degree of
Protection
USB
Connector for
Connector
Programming
8-4 | CFW-11W G2
Table 8.2: General data regarding the inverter control and electronics
Imposed voltage
„
Control types:
„
- V/f (scalar)
- V V W: Voltage vector control
- Vector control with encoder
- Sensorless vector control (without encoder)
- Vector encoder for permanent magnet motors (PMSM)
PWM SVM (Space Vector Modulation)
„
Current, flux and speed regulators in software (totally digital)
„
Execution rate:
„
- Current regulators: 0.25 ms (switching frequency = 2 kHz)
- Flux regulator: 0.5 ms (switching frequency = 2 kHz)
- Speed regulator / speed measurement: 1.2 ms
0 to 3.4 x motor rated frequency (P0403). This rated frequency is adjustable from 0 Hz to 300 Hz in
„
the scalar mode and from 30 Hz to 120 Hz in the vector mode
Output frequency limit as a function of the switching frequency:
„
- 125 Hz (switching frequency = 1.25 kHz)
- 200 Hz (switching frequency = 2 kHz)
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 (P0202 = 3 induction motor):
Regulation: 0.5 % of the rated speed
„
Speed variation range: 1:100
„
Vector with Encoder (P0202 = 4 induction motor or P0202 = 6 permanent magnet):
Regulation:
„
- ±0.01 % of the rated speed with analog 14-bit input (IOA)
- ±0.01 % of the rated speed with digital reference (keypad, serial, Fieldbus, Electronic Potentiometer,
multispeed)
- ±0.05 % of the rated speed with analog input 12 bits (CC11)
- Speed variation range: 1:1000
Range: 10 to 180 %, regulation: ±5 % of rated torque (P0202 = 4, 6 or 7)
„
Range: 20 to 180 %, regulation: ±10 % of the rated torque (P0202 = 3, above 3 Hz)
„
2 isolated differential inputs by differential amplifier; resolution of the AI1:12 bits, resolution of the
„
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
6 insulated digital inputs, 24 Vdc, programmable functions
„
2 isolated outputs, (0 to 10) V, RL ≥ 10 kΩ (max. load), 0 to 20 mA / 4 to 20 mA, (RL ≤ 500 Ω)
„
resolution: 11 bits, programmable functions
Relay 3 relays with NO/NC contacts, 240 Vac, 1 A, programmable functions
„
Overcurrent/short circuit in the output
„
Under/overvoltage in the power
„
Phase loss
„
Overtemperature
„
Overload on the braking resistor
„
Overload on the IGBTs
„
Motor overload
„
External fault / alarm
„
Fault on the CPU or memory
„
Phase-ground short circuit in the output
„
9 keys: Run/Stop, Increment, Decrement, Direction of Rotation, Jog, Local/Remote, right soft key
„
and left Soft key
Graphic LCD display
„
It enables to access/change all the parameters
„
Precision of the indications:
„
- Current: 5 % of the rated current
- Speed resolution: 1rpm
Option of external mounting
„
IP00 Default
„
Standard USB Rev. 2.0 (basic speed)
„
USB
USB plug type B "device"
„
Interconnecting cable: standard host/device shielded USB cable
„