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Powtech VFD in application of water supply equipment

2019-12-03 15:06:30

Which function of the product to solve the application requirements:

Powtech inverter PT300 series are built-in PID regulator, pressure sensor real-time detection manager and translated into analog signals (0 to 10 v or 0 to 20 ma), directly into the inverter analog input port, the set pressure value, given the PID parameter values, the output frequency of the transducer after the built-in PID arithmetic control. System parameters can be adjusted in actual operation, lead to the complete control system response. When the water consumption is little or no water, water pump conditions, has been in a low speed inverter automatic open intelligent dormancy function, water pump stop, when water consumption increase, pressure is not enough, the inverter automatically awakening, the pump running, which greatly increase the pump service life and save power more effectively.

Electrical wiring diagram

Parameter setting

 

Parameter

Set

 Specification

P01.02

1

Terminal Control

P01.03

10

PID Control

P01.14

15

Offline frequency

P11.01

5

Pressure setting

P11.02

0

Selection of feedback signal AI1

P11.04

10.0

PID setting feedback range

P11.05

20.0

Proportion gain Kp1

P11.06

2.00

Integral time Ti1

P11.07

0.0

Derivative time

P11.09

0

Pressure deviation

P11.28

1

Stop operation

P11.29

20

Waking pressure

P11.30

10

Wake-up delay

P11.31

15

Sleeping pressure

P11.32

10

The sleep delay

P01.17

15.0

Acceleration time

P01.18

15.0

Deceleration time

P15.01

1

Pressure proportional

 linkage enable

P15.02

0.5

Wake up pressure linkage differencevalue setting

P15.03

0.5

Sleeping pressure linkage differencevalue setting

P15.28

0

Sleeping mode

P15.29

20.00

Sleeping output frequency

The working condition of the inverter of daily maintenance and repair and precaution:

 

1), pay attention to the electromagnetic interference, make slow, measures must be taken to control all had better use the shielded wire line, shielding wire to the inverter "GND"; Good grounding frequency converter, motor

2), pay attention to the environmental temperature, ambient air to flow, to ensure that the inverter heat dissipation is good.

3), to prevent the entry of dirt, dust, corrosion component in frequency converter.

4), pay attention to prevent water droplets into the device, caused the inverter circui

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