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MagWeb GT Quick Reference GuideSensata Technologies2211 West Casino RoadEverett, WA, USA s guide is for quick reference only and assumes you have access to,

and have read the detailed instructions in the MagWeb GT Owner’s Manual

(PN:64-0086 A Owner Manual, ME-MGT-MW).Note: The MagWeb GT can be installed at any time during the system

installation process. The MagWeb GT will remain in Search mode until the

system is completed and Search mode is properly Reference1. Plug the CAT5 network cable (RJ45) in to one of the available ports on

your local router/modem.2. Plug the other end of the CAT5 network cable in to the Network port on

the bottom of the MagWeb : Always connect the CAT5 cable before connecting to AC power.3. Plug the supplied AC power cable in to an adjacent 110VAC outlet, and

then plug the other end in to the Power Connection port on the bottom

of the MagWeb : Do not plug the MagWeb GT into a power strip, surge protector,

or an uninterruptable power supply (UPS)—or use an outlet that shares

with a power strip or surge protector. Keep such devices far away from

the MagWeb GT, as they can substantially diminish communication

performance by increasing line noise.4. The MagWeb GT will acquire an IP (Internet Protocol) address from your

local router/modem (Example: 192.168.1.101).

If the address comes up as 192.168.131.228, this indicates that the

MagWeb GT is not communicating with the router/modem.L: 192.168.1.101Searching V3.8198.168.2.101Alternate

every

5 secondsW: 192.168.1.102Input Inverter ID

on Local WebShows if inverter IDs have

previously been entered in

MagWeb if inverter IDs not yet

entered in MagWeb 1, MagWeb GT Initialization Screens5. Using a local computer—connected to your router/modem via either a

CAT5 cable or a Wi-Fi connection—open your web browser and type the

IP address (as shown on the MagWeb’s LCD display - Figure 1) into the

web browser. This will take you to a web page being generated by the

local MagWeb GT. Example: 192.168.1.101 750W 11.45 Kwh 012In the above example, the ‘’ address is assigned by

the router in the home and should be typed into the web browser as

described above. The MagWeb GT Home screen appears (see Figure 2).© 2016 Sensata Technologies 1

MagWeb GT Quick Reference GuideEnglish Chinese

ENERGY COMMUNICATION UNITHomeMicro GT StatusBattery System StatusAdministrationAdministration2016-09-01 10:46:45

ID ManagementThursdayHomeECU IDLifetime GenerationLast System PowerGeneration of Current DayLast Connection to WebsiteNumber of InvertersLast Number of Inverters OnlineCurrent Software VersionCurrent Time ZoneECU Eth0 Mac AddressECU Wlan0 Mac AddressInverter Comm. Signal Level2,978.61 kWh3,301 W33.30 kWh2016-09-01 10:41:2087V4.0NAAmerica/Los_Angeles80:97:1B:00:6A:B760:C5:AB:E3:B4:194ENVIRONMENTAL BENEFITSCO Offset Equivalent to0GALLONS0TREES1KGFigure 2, MagWeb GT Home Screen6. Select the Administration tab at the top left of the the Date, Time, Time Zone option from the list at right, and then

from the Time Zone drop-down list, scroll down until you fi nd your time

zone. Once selected, click the Update button and the MagWeb GT will

set the correct : Before exiting this page, be sure to update the Date Time fi eld at

the top of the page.7. Select the ID Management option from the list at system identifi es new serial number ID’s from any MicroGT 500

inverters that have recently been installed. This process may take from

20 seconds to 5 minutes, depending on your system.8. Select the Home tab at the top left to return to the MagWeb GT home

screen. It may take the MagWeb GT from 1 to 10 minutes to fi nd and

report the MicroGT 500 : The amount of “noise” in your home wiring determines how quickly/accurately this stage is completed. It is important to minimize interference

from other devices—such as power strips and UPS MagWeb GT Home screen shows the MagWeb GT unit’s ID at the

top, followed by additional system data (e.g., number of inverters,

number of inverters online, last system power, etc.).The Number of Inverters fi eld refers to the number of MicroGTs detected.

The number of MicroGTs detected should equal the number of MicroGTs

that are installed in your solar array.9. Select the MicroGT Status tab at the top left of the page. The Real

Time Data screen appears showing one line of data for each PV module

installed. The number of PV modules in your array should be accurately

refl ected by the number of units shown on this : Since MicroGT 500 inverters monitor two PV modules each, the

serial numbers for each of the pairs will be the same, ending in A or you need assistance, please contact our Customer Service Department at

(425) 353-8833.2 © 2016 Sensata Technologies

MagWeb GT Quick Reference GuideTroubleshootingThere are three possible areas of trouble with the MagWeb GT:• The MagWeb GT is not communicating with the Internet.• The MagWeb GT is not communicating with the MicroGT inverters.• A MicroGT inverter is not functioning GT not Communicating with the InternetThe MagWeb GT should be plugged in to the wall and there should be other

verifi cation that the site has access to the Internet. Verifi cation can be

through another computer. If no other computers in your home have access

to the Internet, do not proceed until you have independently verifi ed that

Internet access has been the MagWeb GT’s display for a signal showing either:+W or -W• If a “+W” shows, the unit has access to the Internet.• If a “-W” shows, the unit has not yet been able to access the Internet.

If other systems in the house have Internet access, the problem may be

caused by:• Router/modem could have a hardware issue such as a port failure, or...• Internet system has a fi rewall that is blocking access, or...• Some older routers have a very limited number of IP addresses available

or has a fi xed IP, and your existing computer equipment has already

taken all the available IP m: The MagWeb GT display shows something like the following: Example: 192.168.1.101 -W 234kwh 012The 192.168.1.101 (or some number other than 192.168.131.228) is telling

you that the router is able to see the MagWeb GT, but the MagWeb GT is

still not able to connect through the router to the Internet for some on: There is a problem with your existing hardware that will need

assistance from a qualifi ed IT professional. If your hardware is several years

old, it might be cheaper to buy a new GT is not Communicating with the MicroGT InvertersIf you have installed the MagWeb GT and established an Internet connection,

but not all of your modules appear on the MagWeb Home screen when

searching for MicroGT 500 inverters, the following issues may have occurred:• There could be “noise” in your wiring system—either as a result of the

installation or due to grounding problems in the existing wiring.• There may be connection issues with the AC cables connecting each

MicroGT 500 in the Wiring SystemThe MagWeb GT is designed to communicate with the MicroGT 500 inverters

through your home wiring. As long as existing house wiring is properly done,

there should be no problems. However, if there are loose wires in outlets or

there are too many other appliances plugged in near the MagWeb GT, then a

signifi cant amount of “line noise” can build up. Faulty electrical connections

may be able to operate without actually shorting, but still be loose enough

that the connection is creating noise in the , newer power systems that are designed with surge protection devices

may have a dampening effect on communication through home wiring.© 2016 Sensata Technologies 3

MagWeb GT Quick Reference GuideSymptom: When installing the MagWeb GT, the number of MicroGT inverters

listed on the MagWeb GT Home screen is fewer than the actual number

installed at the site. Also, when looking at the MagWeb GT, the bottom right

number (012 as shown below) does not match the number of MicroGT 500

inverters in the installation. Example: 192.168.1.101 +W 234Kwh 012!In this case, there will be an exclamation mark (!) because the system can

tell there should be more microinverters, but it can’t fi nd them. When the

system thinks all units have been found, the exclamation mark will go on: Check the physical location of the MagWeb GT, paying special

attention to how it is plugged in to the wall and what else is plugged in on

this circuit.• Make sure the MagWeb GT is not plugged into a surge protector

or an Uninterrupted Power Supply (UPS). It should not even be

plugged into the same outlet as these devices. It may be necessary to

move the MagWeb GT closer to the service panel to avoid this noise.• If the problem persists, try plugging the MagWeb GT into a

“clean” outlet very close to the service panel. For testing purposes,

it is not necessary at this point to have an Internet connection. Monitor

the MagWeb GT’s LCD screen for the number of microinverters that

display—this is the number of detected MicroGT 500 inverters. If this

is more units than were previously detected, then there exists enough

noise in the house wiring to necessitate plugging the MagWeb GT close

to the service panel.• Another temporary option is to run an extension cord from an

outlet that is very close to the service panel and has the highest

likelihood of being “clean”. This can then be connected to the router

as described in the installation instructions on page 1. If all of the

MicroGTs in the array appear, then the problem is the wiring in your

home. This can be easily solved by keeping the MagWeb GT plugged in

close to the service panel, and then getting Internet access by using a

Wi-Fi ConnectionIn some cases, the AC connections between the MicroGT 500 inverters can

develop moisture or have an otherwise poor m: The MicroGT unit has a history of strong performance, but starts

to have problems in rainy weather. Also, the unit may register as working but

may periodically show as “NO DATA DISPLAYED” on the MagWeb GT on: The connections between the affected MicroGT inverter(s) should

be taken apart and carefully inspected. The connections should be dry

with no apparent moisture. Moisture in the AC or DC connectors will cause

problems in the system, and can be remedied by placing conductive jell in

each contact and reconnecting. All connections should have conductive T is not Functioning ProperlyIf you believe the MicroGT 500 inverters themselves are not working or

defective, DO NOT ATTEMPT TO OPEN OR REPAIR THEM. Please contact

our Customer Service Department at (425) 353-8833.4 PN: 64-0086-Q A Owner Manual, ME-MGT-MW