EM303B Series General Inverter
EM303B is a general purpose vector control inverter. An induction motor with the help of EM303B canpossess fast speed response and torque control ability as a DC motor which makes the motion control system stable, precise,and quick.
Product Description
Main Features:
1. SVC (Sensorless vector control):Torque control accuracy: 5% rated torque. Speed control accuracy: ±0.2% rated synchronous speed.
2. VVF (Vector decoupling based VF control): The steady performanceis the same as that in SVC.
3. Wide speed regulation range, load capacity at low frequency: SVC/0.5Hz/150% rated load, VVF/1.0Hz/150% rated load.
4. Optimized current and voltage protection algorithm ensures that motor can accelerate/deceleratein 0.1S.
5. AVR function makes output voltage stable at grid voltage fluctuation.
6. Load disturbance compensation ensures failure-free operation of motor.
7. Auto-searching motor speed at restart smoothes thestart of motor without current over-shoot.
8. 2 acceleration/deceleration modes: linear and S curve.
9. The performance and stability are improved significantly with dual- CPU.
Product Parameters
| Items |
Specifications |
| Input |
Rated Voltage |
3-phase 380VAC±20%, 50~60Hz±5%, |
| voltage imbalance rate <3% |
| Output |
Output Voltage |
3-phase, from 0 to Usupply. |
| Rated Output Current |
100% rated current non-stop output |
| Max. Overload Current |
Model G: 150% rated current for 1 minutes, 180% rated current for 10 seconds |
| Model P: 120% rated current for 1 minutes, 150% rated current for 10 seconds |
| Basic Control Functions |
Control Mode |
V/F, SVC0, SVC1 |
| Input Mode |
Frequency (Speed) input, torque input |
| Start/Stop Control Mode |
Keypad, control terminals (2-wire sequence, 3-wire sequence), RS485 |
| Frequency Control Range |
0.00~600.00Hz |
| Input Frequency Resolution |
Numeric input: 0.01Hz, analog input: 0.1% of maximum frequency |
| Governor Deflection |
1:50(V/F), 1:100(SVC) |
| Speed Control Accuracy |
±0.2% rated synchronous speed |
| Acceleration/Deceleration Time |
0.01~600.00 seconds/minutes |
| V/F Features |
Rated output voltage: 20%~100% adjustable |
| Frequency base :20Hz~600Hz adjustable |
| Torque Boost |
Automatic torque boost, fixed torque boost curve, customer defined V/F curve scaling |
| Start Torque |
150%/1Hz(V/F),150%/0.5Hz(SVC) |
| Torque Control Accuracy |
±5% rated torque (SVC1) |
| AVR |
AVR is active while output voltage remains unchanged if input voltage is varying. |
| Automatic Current Limit |
Automatically limit output current, avoid tripping overcurrent frequently |
| DC Brake |
Brake frequency:0.1~60Hz, brake time:0~30S, |
| brake current:0~150% rated current |
| Signal Input Source |
Communication, analog voltage, analog current, preset speed, simple PLC and their combinations |
| Special Function Control |
Textile Wobbulation |
Achieve textile wobbulation functions like wobbulation range, time and jump |
|
| Function of Input and Output |
Reference Power Supply |
10V/20mA |
| Terminal Control Power Supply |
24V/150mA |
| Numeric Input Terminals |
7 programmable numeric input terminals |
| Analog Input Terminals |
4 analog inputs:2 voltage inputs (0~10V), and 2 current inputs(0~20mA) |
| Numeric Output Terminals |
2 OC outputs and 1 relay output are programmable. Maximum output current of OC: 50mA. Relay contact capacity: 250VAC/3A or 30VDC/1A. When relay acts, EA-EC is on, and EB-EC is off. |
| Analog output Terminals |
2 programmable analog output terminals can output 0~10V or 0~20mA |
| Keypad Display |
LED |
Human interactions with displays and control actuators |
| Parameter Copy |
Upload and download parameter information of the inverter, copy parameters rapidly. |
| Protections |
Protections |
Short circuit, overcurrent, overload, overvoltage, undervoltage, phase loss, overheating, external fault, and etc. |
| Application Conditions |
Installation Site |
Indoor, with altitude less than 1000 meters, free from dust, corrosive gas, and direct sunlight |
| Ambient Temperature |
-10ºC~+40ºC. In the temperature range +40 °C…+50 °C, the rated output current is decreased by 1% for every additional 1 °C. 20%~90%RH (no condensation) |
| Vibration |
<0.5g |
| Storage Temperature |
-25ºC~+65ºC |
| Installation Method |
Wall mounting, floor mounting, flush mounting |
| Degree of Protection |
Degree of Protection |
IP20 |
| Cooling Method |
Cooling Method |
Forced air cooling |
Installation Instructions
Company Profile
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