79 lines
2.7 KiB
Python
79 lines
2.7 KiB
Python
import minimalmodbus
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import time
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from serial import SerialException
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# 设置频率为55Hz并启动变频器
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def start_inverter_55hz():
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try:
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# 1. 连接到变频器
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# COM3: 串口地址
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# 1: 从站地址
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inverter = minimalmodbus.Instrument('COM3', 1)
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# 2. 配置串口参数
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inverter.serial.baudrate = 9600 # 波特率
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inverter.serial.bytesize = 8 # 数据位
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inverter.serial.parity = 'N' # 无校验
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inverter.serial.stopbits = 1 # 停止位
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inverter.serial.timeout = 1.0 # 超时时间
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inverter.mode = minimalmodbus.MODE_RTU # RTU模式
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print("✅ 已连接到变频器")
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# 3. 设置频率为55Hz
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# 假设最大频率为50Hz，55Hz对应110% = 11000
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# # 如果您的最大频率不同，请调整下面的计算
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# frequency_value = int(70 * 100)
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# inverter.write_register(0x1000, frequency_value)
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# print(f"✅ 频率设置为200Hz")
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frequency_value = int(210 * 100)
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inverter.write_register(0x7310, frequency_value)
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# freq = inverter.read_register(0x7310)
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# print(f" 读取到的频率值: {freq}")
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# max_freq = 300
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# target_freq = 230
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# frequency_value = int(target_freq / max_freq * 100 * 100) # = 2333
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# inverter.write_register(0x1000, frequency_value)
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# time.sleep(0.5) # 等待一下
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# 4. 启动变频器（正转运行）
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inverter.write_register(0x2000, 1) # 1=正转运行
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print("✅ 变频器已启动（正转运行）")
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# time.sleep()
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# inverter.write_register(0x2000, 6) # 1=正转运行
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# print("✅ 变频器已停止（正转运行）")
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# 5. 检查状态
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time.sleep(1)
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#读取3000H可直接读取变频器的当前状态（0001：正转运行；0002：反转运行；0003：停机；0004：电机参数辨识；0005：故障）。
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status = inverter.read_register(0x3000)
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if status == 1:
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print("✅ 变频器正在正转运行")
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elif status == 5:
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print("⚠️ 变频器故障")
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else:
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print(f"📊 变频器状态码: {status}")
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except SerialException:
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print('无法连接或打开串口')
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except Exception as e:
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print(f"❌ 错误: {e}")
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print("请检查：")
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print("1. COM3端口是否正确？")
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print("2. 变频器电源和通信线是否连接正常？")
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print("3. 变频器地址和波特率设置是否正确？")
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finally:
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print("脚本执行完成")
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# 运行
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if __name__ == "__main__":
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start_inverter_55hz() |