Q：What's the biggest advantage of ADW300 wireless energy meter?

A：ADW300 has its built-in wireless communication module which allow it to realize 4G LTE, WiFi, NB-IoT, LoRa upstream communication without using extra IoT gateways. For the application scenarios when the meters can't be of centralized installation, ADW300 will usually be the best option for monitor 3-phase circuits that were far from each other.



Q：How should I connect ADW300 smart energy meter RS485 network communication function ?

A：First, check if the wiring of RS485 communication line was loosen or wired incorrectly.(like reversely wiring the A,B terminal).

Next,inspect if the meter’s setting of address, baud rate, check bit was correct by using keypads on the meter.



Q：What if LoRa communication of meters malfunctioned?

A：First, use USB to RS485 serial converter to connect the meter with computer. Then use adjustment software to check if setting of meter is on consensus with the setting of master station.(setting of channel and spreading factor--SF)

If setting remain the same, then it might be due to large interference of work site or the excessively far range between meter and host. In that case, it’s recommended to use chuck antenna or set a new master station nearby.



Q：What’s the difference between ADW300 and ADW300W

A：ADW300 has internal current transformers and can select compatible current transformer according to the site current to realized a secondary connection via CTs.

ADW300W on the other hand, has external current transformers.(non-detachable or it will damage the meter) This kind of design extremely ease the wiring and installation if the work-site already has CTs.

Q：What do 3×57.7/100V, 3×220/380V, 3×380/660V, 3×100V, 3×380V, 3×660V represent respectively?

A：The meter’s spec of 3*100V, 3*57.7/100V is suitable for high voltage power system while pairing with PT(potential transformer or voltage transformer). Beside, 3*100V represent 3-phase 3-wire and 3*57.7/100V represent 3-phase 4-wire.

The meter’s spec of 3*220/380V,3*380/660V,3*380V,3*660V is suitable for low voltage power system(directly connect with meter). Meanwhile,3*380V,3*660V represent 3-phase 3-wire and 3*220/380V,3*380/660V represent 3-phase 4-wire.

Q: When the ADW300 series wireless energy meter is used with -/5A transformers, the current displayed by the meteris much smaller than the actual current on site [measured by a multimeter].

A：Press the button to view the CT ratio setting [Current Ratio Setting] of ADW300. Fordetails, refer to "ADW300 Current Transformation Ratio Setting Video" and manual.
For example, if ADW300 is used with 150A/5A CT, the current ratio is set to 30 in ADW300.[150/5=30]

Q: ADW300 wireless upload values found that the active power is negative.

A：lt is possible that the curent direction of the transformer is opposite to that of the feld current.and the direction of the transformer needs to be reversed to display correct data and performcorrect energy accumulation.

Q: The three-phase voltage and current of ADW300 smart energy meter are normal, and the active power is far lessthan the normal valye.

A：Check the power factor of the three phases to see if it is in line with thenormal situation (generally above 0.5). lf the value is obviously abnormal, it may be caused by a wrong phase. ltis necessary to check whether the three-phase voltage and current of A, B, and C are in one-to-one correspondence on site. lf there is any problem, the phase seguence must be changed in time todisplavthe correct data.

Q: ADW300/C wireless energy meter can't communicate with 485 on site.

Check 1：Confrm whether the gateway or PLC baud rate, data bits, stop bits, and parity bitsare consistent with ADW300, After confrming that they are consistent, check whether the slavestation address (communication address of the table) and function code (03) set on the gateway or PLcarecorrect.

Check 2：lf it is still correct, the customer must first confrm whether the communication of the watch isnormal (connect usb to 485 to the computer, open the debugging software), if it is normal, it needsto receive the read message sent by the gateway or PLC to check the error.

Q:ADW300/LR smart meter cannot communicate with Lora on site.

Check 1: Bring the distance between the two closer to see if the distance is too far.

Check 2: First check the Lora channel and spreading factor on the gateway, and then compare the Lorachannel and spreading factor of ADW300 to keep the two consistent.

Check 3: lf the parameters are consistent, you can try to change the channels of the two toother channels.

Q: ADW300/4G wireless meter judges the communication problem.

A：First adjust the display to the state interface, and judge the current problem accordingto the maximum display value of the state. Several common problems: the 4G card cannot accessthe internet: the 4G card has a whitelist restriction, and you need to contact the operator to add the lPof the data transmission server; some foreign operators need to open the APN and set the APNparameters; the frmware version is incorrect; the location signal poor and so on.

Q: ADW300/WlFl wireless meter judges the communication problem

A：First adjust the display to the state interface, and judge the current problemaccordingto the maximum display value of the state. Several common problems: WiFl name andpassword are setincorrectly: WiFl assians IP in the wrong way, you need to set a static IPconnection; the firmware version is not equal.

Q: ADW300/C is matched with a gateway and a system platform, the value read by the systemplatform is far from the actual value displayed on the ADW300/C table.

Check 1：Check whether the address read by communication is consistent with the dot table atthe end of the description.

Check 2: When ADW300/C is paired with a gateway [such as AWT100 series] the value read through theMODBUS-RTU protocol is generally a secondary value, and some values lsuch as power! need tobe multiplied by the transformation ratio. For specifc confguration, refer to the manual [such asconnecting to Acrel overseas loT platform, you need to set the CT or PT ratio in Basic DataManagement ->Meter Management].

ADW300W installation video

IoT Platform for Remotely Monitoring

Parameter		Accuracy	Resolution	Measuring range
Statistical data	Active energy(kWh)	Class 0.5S	0.01kWh	0~999999.99kWh
	Reactive energy(kvarh)	Class 2	0.01kvarh	0~999999.99kvarh
	Voltage	0.2%	0.1V	50~285V
	Current	0.2%	0.01A	0.01~80A
	Active power	0.5%	0.001kWh	0~22.88kw
	Reactive power	0.5%	0.001kvarh	0~22.8kw
	Apparent power	0.5%	0.001VA	0~22.88kw
	Power factor	0.2%	0.001
	Frequency	0.2%	0.01HZ	45~65HZ