EM303B Vector Control System

Features

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Note:EM760 frequency converter has performed well since its launch and has been recognized by customers.

Due to the company's product planning upgrade, the EM760 machine has been proven by the market

and can now completely replace the EM500 and EM303B series products.

Therefore, the company decided to delist the EM500 and EM303B series products.

Click here to chooose EM760:https://www.sineedrive.com/Variable-Frequency-Drives/vector-inverter

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.

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- CP

EM303B Parts Descriptions.jpg

Specifications

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Items		Specifications
Input	Rated Voltage	3-phase 380VAC±20%, 50~60Hz±5%,
Input	Rated Voltage	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
	Max. Overload Current	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
	V/F Features	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,
	DC Brake	brake current:0~150% rated current
	Signal Input Source	Communication, analog voltage, analog current, preset speed, simple PLC and their combinations
Special Function Contro	Textile Wobbulation	Achieve textile wobbulation functions like wobbulation range, time and jump
Special Function Contro	Textile Wobbulation
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
Keypad Display	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	Degree of Protection	IP20
Cooling Method	Cooling Method	Forced air cooling

Model Table

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EM303 Model Description.png

Rated Voltage	Model No.	Motor Power(kW)	Rated Output Current(A)
3-phase, 380VAC ±20%	EM303B-0R7G/1R1P-3B	0.75/1.1	2.8/3.7
	EM303B-1R1G/1R5P-3B	1.1/1.5	3.7/4.8
	EM303B-1R5G/2R2P-3B	1.5/2.2	4.8/6.2
	EM303B-2R2G/3R0P-3B	2.2/3.0	6.2/8.0
	EM303B-3R0G/4R0P-3B	3.0/4.0	8.0/10.0
	EM303B-4R0G/5R5P-3B	4.0/5.5	10.0/13
	EM303B-5R5G/7R5P-3B	5.5/7.5	13/17
	EM303B-7R5G/9R0P-3B	7.5/9.0	17/20
	EM303B-9R0G/011P-3B	9.0/11	20/26
	EM303B-011G/015P-3B	11.0/15.0	26/34
	EM303B-015G/018P-3B	15/18.5	34/41
	EM303B-018G/022P-3	18.5/22	41/48
	EM303B-022G/030P-3	22/30	48/60
	EM303B-030G/037P-3	30/37	60/75
	EM303B-037G/045P-3	37/45	75/90
	EM303B-045G/055P-3	45/55	90/115
	EM303B-055G/075P-3	55/75	115/150
	EM303B-075G/090P-3	75/90	150/180
	EM303B-090G/110P-3	90/110	180/220
	EM303B-110G/132P-3	110/132	220/265
	EM303B-132G/160P-3	132/160	265/310
	EM303B-160G/185P-3	160/185	310/360
	EM303B-185G/200P-3	185/200	360/380
	EM303B-200G/220P-3	200/220	380/420
	EM303B-220G/250P-3	220/250	420/470
	EM303B-250G/280P-3	250/280	470/530
	EM303B-280G/315P-3	280/315	530/600
	EM303B-315G/355P-3	315/355	600/660
	EM303B-355G/400P-3	355/400	660/740
	EM303B-400G/450P-3	400/450	740/820

Installation Dimension

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EM303B Installation Dimensions.png

Model No.	W	W1	H	H1	H2	D	D1	D2	d	Frame
EM303B-0R7G/1R1P-3B	140	125	220	205	--	152	120	161	6	(b)
EM303B-1R1G/1R5P-3B
EM303B-1R5G/2R2P-3B
EM303B-2R2G/3R0P-3B
EM303B-3R0G/4R0P-3B
EM303B-4R0G/5R5P-3B
EM303B-5R5G/7R5P-3B	165	148	250	235	--	161	126	170	6	(b)
EM303B-7R5G/9R0P-3B
EM303B-9R0G/011P-3B	215	150	352	335	317	215	172	224	7	(c)
EM303B-011G/015P-3B
EM303B-015G/018P-3B
EM303B-018G/022P-3	270	200	470	450	424	245	187	254	10	(c)
EM303B-022G/030P-3
EM303B-030G/037P-3
EM303B-037G/045P-3	335	240	550	530	500	245	190	254	10	(c)
EM303B-045G/055P-3
EM303B-055G/075P-3	390	300	695	665	635	250	200	259	12	(c)
EM303B-075G/090P-3
EM303B-090G/110P-3	386	300	753	724	700	287	231	295	13	(d)
EM303B-110G/132P-3	416	300	855	825	793	302	246	310	13	(d)
EM303B-132G/160P-3
EM303B-160G/185P-3	497	397	1107	1076	1036	335	285	343	13	(d)
EM303B-185G/200P-3
EM303B-200G/220P-3
EM303B-220G/250P-3	656	450	1348	1314	1261	383	232	390	13	(d)
EM303B-250G/280P-3
EM303B-280G/315P-3
EM303B-315G/355P-3	801	680	1417	1383	1330	383	190	390	13	(d)
EM303B-355G/400P-3
EM303B-400G/450P-3

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