伦茨i700驱动器的常见故障，结合个人维修经验，主要有以下：
1.上电无显示（红灯、蓝灯均不亮）
2.上电报警（红灯常亮），常见报警代码如下：
专业维修lenze伦茨i700伺服驱动器各种故障：
0x2320short circuit or earth leakage at the motor end
0x2340short circuit at the motor end
0x3210dc bus - overvoltage [value] v
0x3220dc bus - undervoltage [value] v
0x4210module temperature too high, [value]
0x4280internal fault - module temperature monitoring
0x4310motor temperature too high, [value]
0x4380motor temperature sensor
0x511224 v supply
0x7303error in feedback system
0x7380hiperface communication error
0xff00 fatal internal error
0xff02 brake
0xff09 motor phase failure
0xff0a motor phase failure - phase u
0xff0b motor phase failure - phase v
0xff0c motor phase failure - phase w