How to fix no display after powering on my Huawei DDSU666-H?
If there is no display after powering on your Huawei Accessories, it could be due to an incorrect wiring mode. Ensure the wiring is correct by following the wiring diagram. Another possible cause is an abnormal voltage supply. Make sure to supply the voltage specified in the instrument's specifications.
How to fix no display after powering on Huawei DDSU666-H Accessories?
If there is no display after powering on your Huawei Accessories, it could be due to an incorrect wiring mode or an abnormal voltage supply. Here's what you can do: 1. If the wiring mode is incorrect, please connect based on the correct wiring mode (see the wiring diagram). 2. If the supplied voltage is abnormal, please supply the voltage on the instrument specification.
What to do if my Huawei Accessories energy metering is inaccurate?
If your Huawei Accessories energy metering is inaccurate, it may be due to incorrect wiring. Ensure that the wiring is correct, referring to the wiring diagram. Also, check the current transformer inlet to see whether the high and low ends are reversely connected. Observe the power values of Pa, Pb, and Pc; abnormal negative values indicate an issue.
Why is RS485 communication abnormal in my Huawei Accessories?
Abnormal RS485 communication in your Huawei Accessories could be due to a disconnected, short-circuited, or reversely connected RS485 communication cable. Reconnect or change the cable to resolve this. Alternatively, the address, baud rate, data bit, and parity bit settings of the instrument may not match those of the host computer. Use the buttons to set these parameters to be the same as the host computer. Refer to the parameter setting instructions for button settings.
What to do if Huawei DDSU666-H energy metering is inaccurate?
If your Huawei Accessories energy metering is inaccurate, the wiring may be incorrect, or the high and low ends of the current transformer inlet may be reversely connected. In this case, connect based on the correct wiring mode, referring to the wiring diagram.
Why is my Huawei Accessories RS485 communication abnormal?
Abnormal RS485 communication in Huawei Accessories can occur if the RS485 communication cable is disconnected, short-circuited, or reversely connected, or if the address, baud rate, data bit, and parity bit of the instrument do not match the host computer. To resolve this: 1. Reconnect or change the communication cable if there are any issues. 2. Set the address, baud rate, data bit, and parity bit to match the host computer settings.
Why is my Huawei accessory not displaying anything after I turn it on?
The lack of display on your Huawei accessory could stem from a couple of things. First, the wiring might be incorrect; double-check the wiring diagram to ensure it's properly connected. Another potential issue is an abnormal voltage supply. Make sure the voltage matches the instrument's specification.
What to do if RS485 communication is abnormal in Huawei DDSU666-H Accessories?
If you're experiencing abnormal RS485 communication with your Huawei accessories, there are a couple of potential causes. First, inspect the RS485 communication cable for disconnections, short circuits, or reversed connections; if you find any issues, replace the cable. Another cause might be a mismatch between the instrument's address, baud rate, data bit, and parity bit and those of the host computer. Use the buttons or "parameter setting" to align these settings.
How to fix power metering inaccuracy in Huawei DDSU666-H?
If you're noticing power metering inaccuracies with your Huawei accessories, start by checking the wiring to ensure the voltage and current phase sequences are correct based on the connection diagram. Also, verify that the high and low ends of the current transformer inlet are not reversely connected; negative power values can indicate this issue.
General| Max. Current | 80 A |
|---|---|
| Frequency | 50 Hz |
| Storage Temperature | -40°C to +70°C |
| Communication | RS485 |
| Accuracy Class | Class 1 |
| Protection Class | IP51 |
| Rated Voltage | 230V AC |
| Voltage Range | 176 V - 276 V |
| Rated Current | 5 A |
| Operating Temperature | -25 °C ~ +60 °C |
| Mounting | DIN rail |
| Type | Single phase energy meter |
Defines symbols like DANGER, WARNING, CAUTION, NOTICE used in the manual.
General safety instructions for operating and maintaining the product.
Specifies that only certified electricians with training should install and maintain the device.
Safety warning about high voltage and ensuring proper electrical connections.
Safety warnings related to operating the device, including high voltage and temperature.
Safety precautions for maintenance, including powering off and ESD protection.
Lists common alarms, factor analysis, and elimination methods for issues like no display or communication errors.
Details the percentage error limitations for various current values and power factors.
Illustrates the wiring connections for the sensor terminals.
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