Frequency alarm problem description: use the frequency conversion model is FR-A740-400K-CHT

Time: 6/30/2017 2:43:19 AM

Status stnt:
The FR-A740-400K-CHT frequency FR-A740-400K-CHT of type FR-F740 (18.5 kW), motor (fan) 18.5 kilowatts, the amount of current is 34.4A, 40 parameters of electron flow, acceleration time of 40 seconds, the deceleration time of 50 seconds, OL alarm several times when starting, even once the inverter overload alarm, stop also OL alarm and little overload alarm frequency.
After parameter

Read your selection, you choose the motor is 34.4A, then in accordance with the principle of frequency converter selection, start the current *1.1=37.84A, while the 18.5KW inverter is only 35A, so the selection is a little small. It's better to change a big one.
There is no overload alarm now. Only OL alarms are available. It is recommended to use braking resistors to reduce energy consumption during deceleration.
And for frequencies