-
Q: How to deal with the communication failure of instrument RS485 networking
A: Check whether the RS485 wirels are loose or AB connection are reversesd. Then pass the button to check whether parameters such as the address, baud rate and parity bit are correctly set
1 -
Q:How to deal with the communication faliure of lora communication?
A:Please connect to the instrument RS 485 interface with USB to 485 serial port line, and verify whether the parameters in the meter and the wireless configuration of the upper main station (channel and expansion frequency factor). If different, modify the instrument wireless parameters to test the same with the main station, if the instrument is in the distance from the main station or the field interference is serious, please try to use the external suction cup antenna, or consider the nearby new infinite main station, and test again.
2 -
Q：What is the difference between ordinary secondary access and W model external transformer?
A：Ordinary secondary access to the built-in transformer, according to the actual current on the field matching transformer, W model with external transformer (can not remove, otherwise it will burn meters), the site has the transformer is convenient for wiring, free of wire.
3 -
Q：3×57.7/100V, 3220 / 380V, 3380 / 660V, 3100V, 33 8 0,3660V each stands to mean what？
A: 3×57.7/100V, 3100V for high voltage, with voltage transformer use, where 3100V epresents three phase three wire, 3×57.7/100V represents three phase four wire, 3380,3220 / 380V, 3660V, 3380 / 660V for low voltage, voltage direct input, where 3 * 380v, 3660V represents three phase three wire, 3220 / 380V, 3380 / 660V represents three phase four wire.
4
ADW300 100A/333mV IoT Wireless Smart Energy Meter
• Communication:4G LTE, WiFi, LoRa, LoRaWAN, NB-IoT, RS485(MODBUS-RTU)
• Measurement: 3-phase Active Power, Reactive Power, Current, Voltage, Harmonic and etc.
• Application Scenario:Building, Factory, Smart Grids, DB Room and etc
• Rated Voltage:Up to 3x660~792Vac L-L
• Rated Current: X*100A/333mV (X should be integer)
• HMI Programming:Setting of CT/PT Ratio, Phase Wiring, Communication and etc
• Standard&Certificate: CE; IEC; LVD
|
Functions |
Description |
|
Display mode |
LCD |
|
Energy metering |
Active kWh (positive and negative)，quadrant reactive |
|
|
power energy |
|
Electrical measurement |
U、I、 P、Q、S、PF、F |
|
Harmonic function |
THDv、Harmonic on 2nd-31st |
|
Pulse output |
Active pulse output |
|
Three-phase unbalance degree |
Voltage unbalance,current unbalance |
|
Temperature measurement |
Temperature of A/B/C/N（Alternate configuration:T） |
|
DI/DO |
4DI,2DO（Alternate configuration:K） |
|
Aftercurrent |
One-way aftercurrent（Alternate configuration:L） |
|
LED display |
Pulse LED display |
|
External current transformer |
External open type current transformer |
|
Electrical parameter |
Undervoltage, undercurrent, overcurrent, underload, |
|
Communication |
Infrared communication |
|
RS485（Alternate configuration:C） |
|
|
Wireless transmission on 470MHz |
|
|
WIFI（Alternate configuration:WF） |
|
|
NB-IOT（Alternate configuration:NB） |
|
|
4G（Alternate configuration:4G） |
|
Voltage input |
Rated voltage |
3×57.7/100V，3×220/380V，3×380/660V，3×100V, 3×380V，3 |
|
Reference |
50Hz |
|
|
Consumption |
<0.5VA (Each phase) |
|
|
Current input |
Input current |
3×1(6)A ;3×100A/333mV; 3×1(6)A（ADW300W）, 3×20(100)A（ADW300W） |
|
Start current |
1‰ Ib (Class 0.5S)，4‰ Ib (Class 1) |
|
|
Consumption |
<1VA (Each phase) |
|
|
Auxiliary power |
Power Supply |
AC 85~265V |
|
Power consumption |
<2W |
|
|
Measurement |
Standard |
IEC 62053-22:2003，IEC 62053-21:2003 |
|
performance |
Active energy |
Class 0.5S（ADW300），Class 1（ADW300W） |
|
Temperature |
±2℃ |
|
|
Pulse |
Width of pulse |
80±20ms |
|
Pulse constant |
6400imp/kWh , 400imp/kWh |
|
|
Communication |
Wireless |
Transmission on 470MHz and maximum distance in open space is 1km; |
|
Infrared |
The constant baud rate is 1200 |
|
|
Interface |
RS485(A、B) |
|
|
Connection mode |
Shielded twisted pair conductors |
|
|
Protocol |
MODBUS-RTU |
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