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The inverter can be divided into single-phase 220V and three-phase 380V(or 400V, 460V), and the input phase loss only exists in three-phase products. The main circuit of inverter, R, S and T are three-phase AC input. When one of the phases is disconnected due to the fault of fuse or circuit breaker, phase-loss failure occurs. Please check the power input cable is normal or not.

If the DC power indicator is on, the possible causes are: the keypad is damaged or the keypad cable is not in good contact, so the keypad and keypad cable can be replaced for testing; if the power board is damaged, replace the power board; if the main control board is damaged, replace the main control board; if the DC power supply is not enough, that means the input power supply may not be connected; or the rectifier is damaged; or the fuse is damaged.

It's better not to exceed the third levels for the big drive control small motor. The main reason is that the self-learning of motor parameters is not accurate, and VF will be better. But our VF is vectorized, which is also related to the motor parameters. So please use VF control, try to get rid of the influence of vector control, please start from the following directions:
(1) The rated parameters of the motor are set correctly
(2) Set the slip compensation factor P04.09=0
(3) Adjust the low speed and high-speed oscillation suppression factor properly, generally to set it bigger (fine-tune), to see the effect
(4) Carrier frequency can be increased, such as 2K ~ 4K

There are below possible reasons, please check one by one.
1. There is no short circuit jumper between + 24 V and PW on the terminals;
2. The + 24 V power supply on the terminal is abnormal, please test;
3. If only one digital terminal is invalid, that means the circuit corresponding to that terminal is damaged, other terminals can be used for test;
4. The terminal polarity is set incorrectly;
5. The function parameters of the corresponding terminals of VFD are set improperly, please check the parameters.

AH is the capacity of battary. The relationship between battary capacity and power quantity is as below: 1kWH=1000W*H=1000V*AH(V: voltage; A: Current; H: hour)

1.Keep cooling of all component,such as panels,distribution box,inverter.A water spray cooling device can be installed around the components.

2.Set up a sunshade for inverter.When installing inverters and distribution boxes, it is better to install them in places with sunshade and rain shelter.

IL, ST, FBD, LD, CFC, SFC

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The maximum operating temperature of IGBT is 85 ℃.The maximum operating temperature of the phase-shifting transformer is 110℃