User Manual
EM303B General Purpose Inverter
9
1.1.2
EM303B Technical Specifications
Table 1-2 EM303B Technical specifications
Items
Specifications
Input
Rated Voltage
3-phase 380VAC±20%, 50~60Hz±5%,
voltage imbalance rate <3%
Output
Output Voltage
3-phase, from 0 to U
supply
.
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
-10
℃~
+40
℃
. 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
-25
℃~
+65
℃
Installation Method
Wall mounting, floor mounting, flush mounting
Degree of Protection
IP20
Cooling Method
Forced air cooling
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