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Encoder faults include: ENC1O，ENC1D，ENC1Z，ENC1U
ENC1O: Encoder disconnection fault, wrong encoder type and pulse number settings, or incorrect wiring. Solution: Set the parameters according to the encoder nameplate, and connect the wires correctly in combination with the GD300L encoder line sequence;
ENC1D: Encoder AB reverse fault, GD300L detects the AB phase signal is opposite, solution: change the AB phase direction setting parameter P20.02, or change the AB phase encoder wiring;
ENC1Z: Encoder Z pulse disconnection fault, GD300L does not detect Z pulse signal, solution: check Z pulse wiring;
ENC1U: Encoder U-phase disconnection fault, GD300L does not detect UVW signal, solution: check UVW signal line, remove the interference source;

Cause analysis:
dEu is a speed deviation fault. When the speed deviation exceeds the set value of P11.13 and the maintenance time exceeds the set value of P11.14, GD300L will trip at dEu and stop running.

Solutions:
1. Check whether the brake is opened
2. Check whether the motor is bocked, and whether the auto-tune of synchronous motor is accurate
3. Check whether the load is too heavy
4. Increase acceleration speed or increase detection time P11.14
5. If dEu happened during open loop control, set P11.14 to disable this function.
6. Inaccurate magnetic pole angle will also cause dEu fault, re-perform motor autotune.

This running mode indicates that the speed command is provided by analog input, the inverter  passively runs based on the analog signal as provided, the lift running curve is determined by the analog change curve generated by the external controller, and the inverter is responsible for driving the motor to run. The analog tracking running input channel must be provided by AI1 (P00.03=5).

Note:
• During analog tracking running, the inverter internal S curve does not work, the S curve of lift running is generated by the lift controller. Adjusting P05.17 or P05.22 impacts the sensitivity of analog input.
• Great analog change ratio will cause inverter running frequency transient, which may result in inverter overcurrent or overvoltage.

1. After receiving the FWD and MS1–MS3 commands from the controller, the inverter sends thecontactor close command and outputs the running signal.
2. With the delay of T2 after receiving the running command, the inverter starts to accelerate tothe start frequency set in P01.01.
3. After accelerating from the start frequency to the braking frequency (P08.14), the inverter sends the brake open signal with the delay of T3 (P08.05, brake open delay).
4. After the brake is open, the inverter accelerates to the reference speed.
5. After the controller switches off the speed command (MS1–MS3), the inverter decelerates to stop according to the S curve. When the frequency reaches P08.14 (stop braking frequency), the inverter outputs the brake close command with the delay of T4 (P08.04, brake close delay), requiring the controller to remove the running command.
6. After receiving the stop command sent by the controller, the inverter stops output with the delay of T5 (P08.15), and the running signals are cancelled. After the delay of T6 (P08.28), the contactor is opened, and the running process ends.

If floors are different in the leveling error, adjust each position of flashboard to keep the same errors on every floor, and adjust creeping speed of elevator (set by multi-step speed) and P09.16 (stop S-curve end segment duration).

1. Three phase photovoltaic energy storage system is usually the best choice for three-phase household application scenarios of court power, or industrial and commercial application scenarios such as shopping centers, parking lots and stations, with unbalanced output function. In order to realize unbalanced output, intelligent ammeter with CT function is usually used to monitor the load consumption of each phase in real-time operation, so that the inverter can adjust the output power of each phase accordingly
2. Seamless switching of power failure: UPS level off grid switching means that the switching time of standby power supply from grid connected mode to off grid mode is less than 20ms, which is the time that most ordinary household loads can pass through without cutting off the power supply.

In the field of household energy storage, lithium battery has greatly exceeded the lead-acid battery with the advantages of small volume, long service life and high safety. Battery selection is a complex process. In addition to considering the load, many other factors need to be considered, such as battery charge and discharge capacity, maximum power of energy storage machine, power consumption period of load, actual maximum discharge of battery, specific application scenarios, etc. in order to select battery capacity more reasonably.

BD series support solar charge and solar on-grid function.BD-RBP only suppprt grid energy stroage and discharge function.Used for system retrofit.

BD support on-grid output,sales electricity to government.XN series don't support this.