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During this time, Schneider inverters and Delta E series inverters were used to make multi-speed attempts. Now I will share the results with you.
First, Schneider inverter Because Schneider inverter series of parameters and functions are basically the same, the ATV32 series as an example.
In the application, we use the channel for multi-speed setting. Generally, LI1 is forward rotation, LI2 is reverse, LI3 is one channel, LI4 is two channel, and LI5 is three channel parameters are PSS-SP2, PSS-SP3. ....... wiring method is common anode 24V.
We can understand that we only need high and low speed: only LI3, when LI3 is 0 (low level), it is low speed, low speed is determined by LSP, when LI3 is 1 (high level is turned on, usually output by plc KA) When the coil is), the inverter outputs high speed (long speed)
If three-speed or four-speed is required, two channels need to be opened: LI3 and LI4. Similar to binary code, their corresponding code table relationship is: LI4=0, LI3=0, low speed output; LI4=0, LI3 =1, two-speed SP2; LI4=1, LI3=0, three-speed SP3; LI4=1, LI3=1, four-speed SP4.
Others and so on, a total of up to 16 speed settings can be achieved. Do you find it very interesting to be here? Today, due to the time relationship, I will be here. Next time I will share the relevant experience of Delta E series inverters. If there are any deficiencies, please correct me.