Dual Power Supply Dual Frequency Conversio Fan Series

Product name

Flame-proof and intrinsically safe dual power supply and  dual frequency converter speed controller for ventilators

Rated input voltage(V)

660V、1140V;50Hz

Voltage fluctuation:±15%Frequency fluctuation:±2.5%

Rated output characteristics

Three-phase AC0~660V,0~1140V,0.5~50Hz

Overload capacity

150%rated current for 60s;200%rated current for 3s

Controlmotor form

Asynchronous motor,permanent magnet synchronous motor,permanent magnet synchronous eectric drum

Frequency setting range

0~50Hz (default 30)

Control method

Modulation

SVPWM space vector PWM modulation

Output frequency range

Manual setting value 0~50Hz,communication setting value 0~50Hz,analog setting value 0.5~50Hz

Motor control method

Vector control,VF control

0.1Hz(analog),0.01(communication)

Acceleration mode

S-curve acceleration

Probe

Probe Type

Intrinsically safe type,output frequency signal,frequency range 200-1000Hz,

corresponding to gas concentration 0-4.5%, The output voltage amplitude is 5V.

Probe position

The location ofTI work area,the location of T2 centralized channel,and the location of T3 exhaust channel.

Operation

control

mode

Ventilation pattern

When the TI position does not exceed the standard,the fan will automatically ventilate according to the gas concentration at the T3 position.

When the T3 concentration increases,the output frequency decreases(as low as the manually set frequency point),

When the T3 concentration decreases,the output frequency increases,up to 50Hz.

Gas exhaus mode

When the T3 position does not exceed the standard,the fan automatically discharges gas according to the gas concentration at the T1 position.

When the T1 concentration increases,the output frequency increases(as low

as the manually set frequency point),

When the TI concentration decreases,the output frequency decreases(up to 50Hz).

ManualMode

The frequency converter runs at the manual frequency setting value and is not affected by the gas probe detection data.

Probe protection

When a gas probe failure is detected,it will alarm and automatically replace the T3 position with the T2 position.

If two probe faults are detected,a probe fault is reported.

Display

Operating status

Current operating mode,probe detection concentration,current operating frequency.

Faultdisplay

Gas probe failure,frequency converter operation failure;overvoltage, overcurrent,output phase loss protection.

Active/standby switching

When dual power supplies are used,one group is the master machine and the other group is automatically the backup machine.

When one of the inverters presses the start button,it automatically becomes   the host.When this inverter stops or fails,the other inverter starts automatically from 0.When the entire machine needsto be stopped,the stop buttons of the

mainmachine and the standby machine need to be pressed at the same time.