用plc输出模拟量和开关量分时对变频器频率进行控制,我理解为频率给定在模拟量和固定频率间切换.

Set the fixed frequency as the main setpoint and the analogue as the additional setpoint.

P1000 = 23

Programme a digital input (e.g. DIN 3) to disable the additional setpoint.

P1074 = 722.2
P1020 = 722.2
P1016 = 2 (带启停功能的固定频率选择功能)
P1001 = *** HZ(固定频率值)
P0703 = 99

以上方法肯定可以实现, 也可以采用切换参数组方式