The application of the hottest inverter in the exh

Inverter applies closed-loop control exhaust system in Chemical Plant Abstract:

the following is the typical application of Siemens Inverter in different industries, but due to the different actual engineering environment, the system configuration and parameter settings may be different, which is for reference only

keyword: none

--- this application selects a 11kw Micromaster 420 to drive a 11kw motor as the power source of the exhaust fan in the chemical plant. Keep the air volume constant by measuring the flow of the downstream heating system. Micromaster 42012sr008740 Bochuang injection molding machine two board software system v1.020 frequency converter is installed in the distribution box near the fan, and the system only needs start/stop control. The flow sensor is connected to the analog signal input end as a feedback signal, and a resistor converts the current into a 2~10v voltage signal

advantages:

1. Speed regulation has important energy-saving significance

2. Improve the process control effect and reduce pollution due to the maximum efficiency of the heater

3. Built in PI regulator, no additional control unit is required

4. There is no need to manually adjust the yield strength of reinforcement. It is simple to control the start and stop. System configuration:

5. Motor, 4-pole 11kw 420v 3-phase asynchronous motor

6. Control system, closed-loop pi system

7. Sensor, 4 ~ 20mA flow sensor

8. Driver, Micromaster 420 11kw 400V

parameter

parameter value significance

p1000 1 is a digital preset for the frequency converter, which generally does not require manual adjustment in the new material industry

p1040 20 normal setting value

p0003 3 allows adjustment or setting of all parameters

p1080 10 minimum fan speed

p0778 4.00 4 ~ 20mA analog output of the corresponding output frequency to the plant process control system

p1300 2 square v/f control, suitable for fan/water pump loads

p0300-p0311 * * * set motor parameters

p2200 1 PID enable. The following parameters ensure the stability in this application

p2280 0.3 P gain

p2285 0.06 I gain

p2271 1 1 sensor type

p2268 250% setting

p2267 80 100% setting

p0761 2 define the dead band width in the analog input characteristics

parameters

parameter value significance

p1000 1 Digital preset of the frequency converter, and generally do not need to be manually adjusted

p1040 20 normal setting value

p0003 3 allows adjustment or setting of all parameters

p1080 10 minimum fan speed

p0778 4.00 4 ~ 20mA analog output of the corresponding output frequency to the plant process control system

p1300 2 square v/f control, suitable for fan/water pump loads

p030 completed 0-p0311 * * * setting motor parameters

p2200 1 PID enable in about half a month. The following parameters ensure the stability in this application

p2280 0.3 P gain

p2285 0.06 I gain

p2271 1 1 sensor type

p2268 250% setting

p2267 80 100% setting

p0761 2 define the dead band width in the analog input characteristics

the author's introduction:

Siemens Automation and drive standard drive products department is subordinate to Siemens Automation and drive group, which produces and sells standard drive products, including SINAMICS G110 series frequency converters Micromaster 4 series standard frequency converter, Micromaster 3 series standard frequency converter, high-efficiency frequency conversion motor and motor frequency converter are integrated products