EM303B

EM303B Open loop inverter

Open loop vector control inverter
3-phase 380 V-20%~415V+20%,0.75~400kW

EM303B helps an induction motor to achieve fast speed response and torque control ability as a DC motor which makes the motion control system stable,precise and quick.

1.Salient features

①.  V/F & Sensorless Vector Control (SVC)

②.  Dual CPU resulting in better performance & stability

③.  Built-in DC reactor for 90kW- 400kW.
④.  Stationary/Rotational auto tuning of motor parameters

⑤. Detachable standard LED keyboard with in-built potentiometer; Optional LCD keyboard

⑥.  Normal duty (P)/Heavy duty (G) dual rated drive

⑦.  Modbus RTU communication

⑧.  Built-in PID control

⑨.  Built-in braking IGBT up to 15kW

⑩.  Programmable digital terminals:7 digital inputs & 2 digital outputs,3 multifunction outputs: 1 C/O relay & 2 open collector transistor

⑪.  Analog terminals: 4 inputs & 2 outputs.All analog inputs can also be programmed as digital multifunction inputs.Analog outputs can be selected for voltage & current signals by changing jumper

⑫.  Load disturbance compensation for trip free operation

⑬.  Auto motor speed search at restart

⑭.  Flange mounting (90~200kW) & floor mounting with optional chassis (5kW & above)

2.Wiring diagram

      

 

3.Specifications

Items Specifications
 Mains supply  Rated Voltage  3-phase 380 V-20%~415V+20%, 50/60Hz±5%, voltage imbalance rate<3%
 Output  Output Voltage  3-phase, from 0 to mains supply
 Rated Output

Current

100% rated current non-stop output
 Max. Overload  Current  Model G:150% rated current for 1 minute, 180% rated current for 10 seconds

Model P:120% rated current for 1 minute, 150% rated current for 10 seconds

 Basic Control  Functions  Control Mode  V/F, SVC (SVC0, SVC1)
 Input Mode  Frequency (Speed) input, torque input
 Running Mode  Keyboard, control terminals (2-wire sequence, 3-wire sequence),  RS485
 Frequency  Control Range  0.00~600.00Hz
 Input Frequency  Resolution  Digital input: 0.01Hz

Analog input: 0.1% of maximum frequency

 Speed  Regulation  Range  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: 20.00~600.00Hz 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 frequent overcurrent  tripping
 DC Brake  Brake frequency: 0.1~60.0Hz, 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

Functions

 Textile  Wobbulation  Realize textile wobbulation function like wobbulation range,  time and jump
 Input /

Output

Functions

 Reference  Power  10V/20mA
 Terminal Control  Power  24V/150mA
 Digital Input  Terminals  7 programmable digital input terminals
 Analog Input  Terminals  4 analog inputs: 2 voltage input(0~10V) and 2 current  inputs(0~20mA)
 Digital 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 N/O,  and EB-EC is N/C
 Analog Output  Terminals  2 programmable analog output terminals can output: 0~10V  or 0~20mA
 Keyboard

Display

 LED  Human interactions with displays and control actuators
 Parameter Copy  Upload and download parameter information of the inverter,  copy parameters rapidly
 Protection  Protection  Overcurrent, overvoltage, short circuit, overload, phase loss, undervoltage,  overheating, external faults, etc.
 Application  Conditions  Installation Site  Indoor, with altitude less than 1,000 meters, free from dust  and corrosive gas, and  direct sunlight
   Ambient  Temperature  -10℃~+50℃. Derated from ambient +40℃~+50℃,

20%~90%RH (no condensation)

 Vibration  <0.5g
 Storage  Temperature  -20℃~+65℃
 Installation  Method  Wall mounting, flush mounting
 Protection Grade  IP20
 Cooling Method  Forced air cooling
 Safety Standard  IEC61800-5-1:2007
 EMC Standard  IEC61800-3:2004

4.Model Numbering Scheme

5.Model Number List

Remarks:

EM303B is an integrated model with G (fixed torque) and P (square torque) in one. The data listed above is of Model G. When applied to square torque like blower, water pump and etc., the power ratings of applicable motor can be one grade higher. See inverter’s nameplate for details.

    • EM303B Outlook
      Overall and Installation Dimensions

      EM303B can be classified to 10 sizes for total 30 models.

      The keypad can be installed on the metal panel separately with a hole size of 116.5±0.1(L)*71.5±0.1 (W)mm, and applicable metal panel thickness:1.2~2.0mm.

      Overall Installation Dimensions of EM303B

      Flush Mounting

      EM303B-090,EM303B-110~132,EM303B-160~200 can be installed in flush mounting. The mounting method:
      Please move the flanges on the top and bottom of the housing from the place as shown below. It only needs to unscrew the boltsof flanges and assemble at the right places. See Figure 2-8 for the installation dimensions.

      Installation Dimensions for Flush Mounting

       

      Packing details of EM303B

       

  • Optional Accessories

    Items Describe Picture
    LCD keyboard
    (optional)
    Display the working status information of the inverter via the LCD screen

    Specification of external AC reactors

     
+ Product

EM303B

EM303B Open loop inverter

Open loop vector control inverter
3-phase 380 V-20%~415V+20%,0.75~400kW

EM303B helps an induction motor to achieve fast speed response and torque control ability as a DC motor which makes the motion control system stable,precise and quick.

+ Specifications

1.Salient features

①.  V/F & Sensorless Vector Control (SVC)

②.  Dual CPU resulting in better performance & stability

③.  Built-in DC reactor for 90kW- 400kW.
④.  Stationary/Rotational auto tuning of motor parameters

⑤. Detachable standard LED keyboard with in-built potentiometer; Optional LCD keyboard

⑥.  Normal duty (P)/Heavy duty (G) dual rated drive

⑦.  Modbus RTU communication

⑧.  Built-in PID control

⑨.  Built-in braking IGBT up to 15kW

⑩.  Programmable digital terminals:7 digital inputs & 2 digital outputs,3 multifunction outputs: 1 C/O relay & 2 open collector transistor

⑪.  Analog terminals: 4 inputs & 2 outputs.All analog inputs can also be programmed as digital multifunction inputs.Analog outputs can be selected for voltage & current signals by changing jumper

⑫.  Load disturbance compensation for trip free operation

⑬.  Auto motor speed search at restart

⑭.  Flange mounting (90~200kW) & floor mounting with optional chassis (5kW & above)

2.Wiring diagram

      

 

3.Specifications

Items Specifications
 Mains supply  Rated Voltage  3-phase 380 V-20%~415V+20%, 50/60Hz±5%, voltage imbalance rate<3%
 Output  Output Voltage  3-phase, from 0 to mains supply
 Rated Output

Current

100% rated current non-stop output
 Max. Overload  Current  Model G:150% rated current for 1 minute, 180% rated current for 10 seconds

Model P:120% rated current for 1 minute, 150% rated current for 10 seconds

 Basic Control  Functions  Control Mode  V/F, SVC (SVC0, SVC1)
 Input Mode  Frequency (Speed) input, torque input
 Running Mode  Keyboard, control terminals (2-wire sequence, 3-wire sequence),  RS485
 Frequency  Control Range  0.00~600.00Hz
 Input Frequency  Resolution  Digital input: 0.01Hz

Analog input: 0.1% of maximum frequency

 Speed  Regulation  Range  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: 20.00~600.00Hz 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 frequent overcurrent  tripping
 DC Brake  Brake frequency: 0.1~60.0Hz, 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

Functions

 Textile  Wobbulation  Realize textile wobbulation function like wobbulation range,  time and jump
 Input /

Output

Functions

 Reference  Power  10V/20mA
 Terminal Control  Power  24V/150mA
 Digital Input  Terminals  7 programmable digital input terminals
 Analog Input  Terminals  4 analog inputs: 2 voltage input(0~10V) and 2 current  inputs(0~20mA)
 Digital 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 N/O,  and EB-EC is N/C
 Analog Output  Terminals  2 programmable analog output terminals can output: 0~10V  or 0~20mA
 Keyboard

Display

 LED  Human interactions with displays and control actuators
 Parameter Copy  Upload and download parameter information of the inverter,  copy parameters rapidly
 Protection  Protection  Overcurrent, overvoltage, short circuit, overload, phase loss, undervoltage,  overheating, external faults, etc.
 Application  Conditions  Installation Site  Indoor, with altitude less than 1,000 meters, free from dust  and corrosive gas, and  direct sunlight
   Ambient  Temperature  -10℃~+50℃. Derated from ambient +40℃~+50℃,

20%~90%RH (no condensation)

 Vibration  <0.5g
 Storage  Temperature  -20℃~+65℃
 Installation  Method  Wall mounting, flush mounting
 Protection Grade  IP20
 Cooling Method  Forced air cooling
 Safety Standard  IEC61800-5-1:2007
 EMC Standard  IEC61800-3:2004

4.Model Numbering Scheme

5.Model Number List

Remarks:

EM303B is an integrated model with G (fixed torque) and P (square torque) in one. The data listed above is of Model G. When applied to square torque like blower, water pump and etc., the power ratings of applicable motor can be one grade higher. See inverter’s nameplate for details.

+ Dimensions
    • EM303B Outlook
      Overall and Installation Dimensions

      EM303B can be classified to 10 sizes for total 30 models.

      The keypad can be installed on the metal panel separately with a hole size of 116.5±0.1(L)*71.5±0.1 (W)mm, and applicable metal panel thickness:1.2~2.0mm.

      Overall Installation Dimensions of EM303B

      Flush Mounting

      EM303B-090,EM303B-110~132,EM303B-160~200 can be installed in flush mounting. The mounting method:
      Please move the flanges on the top and bottom of the housing from the place as shown below. It only needs to unscrew the boltsof flanges and assemble at the right places. See Figure 2-8 for the installation dimensions.

      Installation Dimensions for Flush Mounting

       

      Packing details of EM303B

       

+ Accessories
  • Optional Accessories

    Items Describe Picture
    LCD keyboard
    (optional)
    Display the working status information of the inverter via the LCD screen

    Specification of external AC reactors

     
+ Download