Energy Saving Unit

Input

Rated voltage, rated frequency

3 PH (4T# Series) 380V 50/60Hz

3 PH (2T# Series) 220V 50/60Hz

1 PH (2S# Series) 220V 50/60Hz

Permissible voltage range

3 PH (4T# Series) 320V～460V

3 PH (2T# Series) 170V～270V

1 PH (2S# Series) 170V～270V

Output

Voltage

4T# Series: 0～380 V

2S#, 2T# series: 0～220 V

Frequency

0 Hz ～ 600Hz

Overload capacity

110% rated current for long-term; 150% rated current for 1m; 180% rated current for 2s.

Control mode

VVVF control, space voltage vector

Control characteristics

Frequency setting

Resolution

Analog terminal input

0.1% of maximum output frequency

Digital setting

0.01 Hz

External pulse

0.1% of maximum frequency

Frequency

precision

Analog input

Within 0.2% of maximum output frequency

Digital input

Within 0.01% of setting output frequency

External pulse

Within 0.1% of maximum output frequency

Control characteristics

V/F curve (Voltage-frequency characteristics)

Reference frequency can be randomly set between 5Hz to 600Hz and V/F curve with multiple joint can be randomly set.  There are three curves provided, including constant torque curve, Dec torque curve 1 and Dec torque curve 2.

Torque boost

Manual set: 0.0～20.0% of rated output.  Automatic torque boost can be set according to output current.

Auto current/voltage limit

It will automatically check the current and voltage of motor stator during acc/dec or stable running.  Based on special arithmetic, it can control the current and voltage within allowable range.

Under voltage inhibition in running

It is especially suitable for the users with low network voltage and frequently fluctuated network voltage.  Even the voltage is lower than permissible voltage, and the system will maintain the longest possible running time according to the unique algorithm and residue energy allocation strategy.

Typical functions

Multi-speed and wobble frequency running

8 programmable multi-speed control and 6 kinds of running mode, 15 multi-speed control modes of terminal.  Wobble frequency operation is composed of preset frequency, central adjustable frequency and state memorization and recovery after machine halt or power failure.

Embedded PID controller

The built-in PID controller with bipolar control is available.  With accessories, the 5-pump constant-voltage regulation control system (supplying water and gas) is formed, and has various energy-saving functions such as sleeping mode, etc.

RS485 communication and synchronous control/ load

Self-equalizing function

With the standard RS485 communication interface, any master inverter can act as the synchronous controller, to internally command the linkage control proportion, superposition and fine adjustment of slave inverter and so on.  With load self-equalizing function, the universal inverter can keep the strict conformance between the load proportion of all transmission devices and the pre-set proportion.

Dedicated function of drawing machine

The energy saver has various functions such as coil diameter calculation, rapid and high-precision PID adjustment, disconnection protection and so on, to realize stable winding operation under various conditions.

Droop speed control

Power equalization of many inverters on the same transmission chain can be realized.  Proper parameters setting can realize the control performance of torque motor.

Frequency setting

Analog input

DC voltage: 0～5V, 0～10V，DC current: 0～20mA (upper and lower setting, selectable)

Pulse input

Its amplitude value is between 5 and 30V and its frequency is within 50.0KHz.

Digital input

It can set by operation panel, RS485 interface, UP/DW terminal, and can set multiple combinations with analogue input.

Output signal

OC output

Two OC output, one fault relay output (TA, TB, TC) and as many as 16 types of output mode for choice

Analog output

Two 0～10V voltage signal or 0～20mA current signal.  Upper and lower setting, available

Energy saving running

Regulate the output voltage and slip frequency compensation according to the output current, getting the most efficient running results. Regulate the energy saving level according to the ambient working conditions.  The energy saver is especially suitable for ball mill whose frequency can only be regulated slightly.

Voltage stabilizing running

Three ways for selection: dynamic voltage regulation, static voltage regulation, instable voltage regulation, to get the most stable running result.

Typical functions

Acc/Dec time setting

0.1S～6000min continuous setting, S curve and linear mode for choice.

Check speed and restart function

Realize the steady restart when the machine is running or there is a machine halt.

Counter and timer

Built in one timer and one counter, making the integration of system easy.

Operating function

Upper and lower frequency setting, frequency hopping operation, reversal operation limitation, slip frequency compensation, voltage stabilizing running, RS485 communication, frequency increasing/decreasing control, self-recovery for fault, etc.

Display

Operation panel display

Running state

Output frequency, output current and voltage, motor speed, frequency setting, module temperature, PID setting and feedback quantity, analog I/O and so on.

Alarming

The operation panel shows recent six times failure record, and last running parameter record of output frequency, setting frequency, output current, output voltage and DC voltage, module temperature and so on during last fault trip period.

Protection / alarming function

Overcurrent, overvoltage, undervoltage, electronic thermal relay, overheating, short circuit, phase-lacking output, internal memory fault, etc.

　Environment

Ambient temperature

-10ºC to 50ºC (nonfreezing)

Ambient humidity

Under 90% (non-condensing)

Ambient environment

Indoor (without corrosion, inflammable gas, oil mist or dust and so on)

Altitude

Lower than 1000m

Structure

IP protection

IP20

Cooling mode

Forced cooling

Installation

Cabinet model