The Yiwei UT500 series vector inverter has three operation control methods: keyboard control, terminal control, and RS485 communication port control. This article mainly introduces the wiring and instructions for selecting external terminal control and using PLC transistor output control for Yiwei inverters. The PLC digital output (DO) controls the inverter operation, and the analog output (AO) controls the inverter operating frequency.
1. Product Model
Inverter: UT512-2R2G1-1XA0 220V
CPU: UN 214-1AD23-0XB0
Module: UN 235-0KD22-0XA0
2. Address allocation
There are 3 output points: inverter forward rotation: Q0.0, inverter reverse rotation: Q0.1, inverter stop: Q0.2;
One analog output. Frequency setting: AQW4.
3. Hardware wiring
Note: Multi-function output terminals X1~X6 can be selected as NPN or PNP transistor signals as input. The bias power supply can be selected as an external power supply (PLC terminal). The factory default '24V' is shorted to 'PLC'. The Yiwei 214 transistor output is in PNP form, as shown in the figure below:
PLC internal circuitry:
Connection method of PNP characteristic transistors in frequency converters:
Given the frequency, select the voltage output (0~10V) of the 235-0KD22 module, or select 0~20mA output, corresponding to the frequency range of the frequency converter of 0~50Hz.
4. Inverter operating parameter settings
Select 1 terminal control: The operation and stop of the frequency converter and the direction control terminal are controlled by switching the forward or reverse rotation terminal on and off with (COM).
In this example, the operation control terminals X1, X2, and X3 are used.
5. Inverter frequency selection settings
In this example, the 0~10V output from the 235 module is used to control the given frequency (0~50Hz) of the frequency converter.
PLC and frequency converter monitoring:
Overall wiring diagram:
The above is a simple sharing of how to wire the CPU transistor output to the inverter terminals and how to set the inverter parameters. You can try it out according to the above instructions. At the same time, you may also have questions about connecting the CPU relay output to the inverter terminals. Finally, I will share the wiring diagram of connecting the CPU relay output to the inverter control terminals. Other parameters and settings remain unchanged.
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