Huawei SmartPSB2000L User manual

HUAWEI TECHNOLOGIES CO., LTD.
SmartPSB2000L Smart PV Safety Box
Quick Guide
Issue: 04
Part Number: 31509508
Date: 2018-06-12

1Overview
1
•Theinformation in this document is subjectto changedue to version upgradesor other reasons.Every effort
has beenmade in the preparationof thisdocument to ensure accuracyof the contents,but all statements,
information, and recommendations in this document do not constitute a warranty of any kind, express or implied.
•Only qualifiedandtrainedelectricaltechniciansareallowedto operatethe device.
•Carefullyread this document and the precautionsbeforeinstallingthe device.Failure to comply withthe
storage,installation,and operationregulationsspecifiedinthis document may cause devicedamage, which is
not covered by Huawei'swarranty.
•If the equipment is used in a manner not specifiedby the manufacturer,the protectionprovidedby the
equipment may be impaired.
•Use insulatedtoolswhen installingthe device.For personalsafety, wear proper personalprotectiveequipment
(PPE).
TheSmartPSB2000Lsmart PV safety box (safety box for short) is a key component that implements rapid
shutdownand module monitoringfor HuaweiSUN2000P-375Wsmart PV optimizers. Thesafety box is easy to
install,operate, and maintain.
Shutdownbutton
NOTICE
Rapidshutdownmeans that the power generationsystemconsisting
of optimizers, smart PV safetyboxes, and invertersdecreasesthe DC
voltage to the safe voltage range (≤ 30 V) within the specified period
(≤ 30s).
No.
Description
1
Tworoutes of output terminals, cable length(includingterminals)250 mm
2
An LED indicatorshowingthe runningstatus of the safety box
3
Tworoutes of input terminals, cable length(includingterminals)150 mm
4
RS485communication, PE, and 12 V powercables, 340 mm long
Copyright © Huawei Technologies Co., Ltd. 2018. All rights
reserved.
Prerequisites
An optimizer is installedfor each PV module, and
the rapid shutdownfunctionof the safety box is
enabled.
Triggerby
button press
If the shutdownbutton (
) is pressed,the safety
box enters the rapid shutdownstate. TheLED
indicatoris steady red, and the inverterturns off the
AC output. Thisproductcannot be used as a
substitutefor the emergency stop switch.
If the shutdownbutton (
) is released,the safety
box exits the rapid shutdownstate. TheLED
indicatoris steady red within 10 minutes. Theoutput
voltagesof the optimizer and inverterare restored
10 minutes later. TheLEDindicatorof the safety box
changesfrom steady red to steadygreen.
Triggerby
powerfailure
If the AC power fails, the safety enters the rapid
shutdownstate. Theinverterand optimizer stop
output and communication.TheLED indicatorsof
the safety box and inverter are off.
If the AC power resumes, the inverter, optimizer,
and safety box restore to the normal state.

2
InstallationMode 2
(RecommendedDistance)
2Installation and Cable Connections
WiringDiagram
1. Each inputof the safetybox supportsserialconnectionof
up to 15 optimizers, and the stringvoltage shouldbe less
than 600 V DC.
2. After the cord end terminal is removed, the PE cable of the
safety box and the communication PE cable of the power
meter can be connectedtogetherto the communication
terminal (pin 8) of the inverter.
NOTE
1. Install the safety box under or on a side of an
inverterwith the deliveredM6x60 expansion
bolts. It is recommended that an M8 drill bit
be used to drill holes.Thetorque shouldbe
4.5–5.5N·m.
2. Connectthe RS485communications, PE,
and 12 V powercables from the safety box to
the correspondingporton the inverter.
3. Connectthe output terminals of the safety
box to the DC input ports of theinverter (one
route is used as an example in the right
figure).
4. Connectthe input terminals of the safety box
to the output ports of the optimizer string
(one route is used as an example in the right
figure).
Inverter
Safety box Optimizer PV module
InstallationMode1
(RecommendedDistance)

3
Port InverterModel
COM SUN2000L-3KTL-CN,SUN2000L-4KTL-CN,SUN2000L-5KTL-CN
ALARM SUN2000L-2KTL,SUN2000L-3KTL,SUN2000L-3.68KTL,SUN2000L-4KTL,SUN2000L-
4.6KTL,SUN2000L-5KTL
Dependingonthe invertermodel, the RS485communications,PE, and12 V powercablesneed to be
connectedto the COM or ALARM port of the inverter.Thepins are wired in the same way.
COM or ALARM Terminal Connection
1. Switchon the AC circuit breakerbetweenthe inverter and the power grid (the AC voltageof the power grid
shouldbe in the range allowedby the inverter).
2. Turnthe DC switch at the bottom of the inverterto the ON position.
3. Observethe LEDindicatoron the safety box. Thestatus changesequenceshouldbe: blinkinggreen at long
intervals> blinkinggreen at short intervals.If the LED indicatoris abnormal, checkwhether cablesare
connectedcorrectlyand securely.
3Powering On the Safety Box
NOTE
LED Status Description
Blinkinggreenat long intervals
Poweron self test.
Blinkinggreenat short intervals
Communicatingwith the inverterproperlyand not communicatingwith the
optimizer.
Steadygreen
Communicatingwith the inverterand optimizer properly.
Steadyred
Shutdown.
Blinkinggreenat long intervals:on for 1s and then off for
1s
Blinkinggreenat short intervals:on for 0.2s and then off for 0.2s
1. Checkwhether all cablesto the safety box are properly connected.
2. Input and output terminals are correctlypaired, and no crossover exists.
NOTICE

Adding the Safety Box
4.1
1. Log in to the app and access
the Operationconsole
screen.
2. ChooseDevicemaintenance >
Add/Deletedeviceandtap Smart
PV safety box.
4
1. Thenear-endFusionHomeapp (app for short) is a mobile phoneapp that locallycommunicates with the
inverterover WiFi for alarm query,parameter configuration,routinemaintenance,and commissioning.
2. Requirementsforthe mobile phoneoperatingsystem: Android 4.4 or later, iOS 8.0 or later.
3. For details aboutapp connectionand login,see the invertermanual availableonsite.User interfaces(UIs) on
the Android system are used as an example. TheactualUIs prevail. Login to http://solar.huawei.comand
chooseSERVICES>DownloadCenterto obtainthe latest document.
4. Theinverterand safety box cannot perform any commissioningtasks when the AC poweris disconnected.
5. Theinvertersoftware versionmatching the smart PV safety box must be V100R001C00SPC317orlater. The
app versionmust be 2.1.11.302or later.
6. Theapp screen snapshotsprovidedin this document correspondto FusionHome2.1.11.303.Thefiguresare
for referenceonly.
4FusionHome App
NOTE
NOTE
1. If the safety box icon is green,the safety box is runningproperly.
2. If the safety box icon is yellow,the safety box is in standbystate.
3. If the safety box icon is gray, the safety box is abnormalin communication.Check whetherits cable connections
and communicationsparameters are correct.
4. If the safety box icon is red, the safety box is in rapid shutdowncheckstate.
3. After the safety box is added
successfully,thesafety box icon
is displayed.
Adding Optimizers
4.2
Automatic search:Automatically search for optimizer SNs and string numbers. You need to manually modify
devicenames and locations.
Manualconfiguration:ManuallyconfiguretheSNs, string numbers, devicenames, and locationsof optimizers.
Add optimizers by automatic searchor manual configuration.

2. Theoptimizer searchtakes about 20
minutes. If you tap Stopsearching,
the information of the optimizers
alreadyfound will be saved.
3. After the search is canceledor
completed, the screenfor
enablingRapidshutdownis
displayed(seesection 4.3).
5
1. TapAutosearch.
Manual Configuration
4. If you tap No in the previousstep,
the screen for adding devicesis
displayed.TapManualconfigand
tap the optimizer to modify optimizer
information.
5. Modifyoptimizer information.
2. TapManualconfig.
AutomaticSearch
3. By default, two strings are
configured.TapAddoptimizer.
1. When installingoptimizers,
remove the SN barcodes
and attach them to their
respectivepositionson the
same layoutform. For details,
see the usage instructionson
the rear of the form.
For details aboutthe optimizer
icon, see section5.1.
NOTE
6. TapSubmit to beginoptimizer
search(step 5 in Manual
Configuration).

6
Performing Rapid Shutdown Check
4.3
4. Enter optimizer informationto
add all optimizers in sequence
by scanningtheir QR codes or
manually enteringtheir SNs.
1. After optimizer searchis
complete, the screen for enabling
Rapidshutdownisdisplayed
automatically.
1. You need to enable Rapidshutdownand start Rapidshutdown
checkonlyif anoptimizer is installedfor eachPV module. To support
the rapid shutdownfunction,enableRapid shutdown(disabledby
default)for the safety box. If Rapid shutdownis disabled,the rapid
shutdownfunctionis ineffective.
2. If optimizers are installedonly for certain PV modules, the rapid
shutdownfunctionis ineffectiveno matter whetheryou enableRapid
shutdownor press the shutdownbutton.
3. Rapidshutdowncheckis displayedonlyif Rapidshutdownis
enabled.
4.If optional configuration of optimizers is adopted, the rapid
shutdown check fails and the rapid shutdown function is
ineffective.
NOTE
6. If you tap Cancel to stop the
search, the enteredoptimizer
information is saved. You can tap
Manualconfig to add a new
optimizer or tap the optimizer to
modify optimizer information.
5. TapOK. Automatic search
for optimizers begins and willlast
about 10 minutes. After the search
is completed, the screen for
enablingRapidshutdownis
displayed(seesection 4.3).
4. If you did not enableRapid
shutdownor perform rapid
shutdowncheck,you can still tap
the shutdownbox icon to access
the screen for enablingRapid
shutdownor performing rapid
shutdowncheck.
3. After Rapid shutdown is enabled,
a dialogbox for performingrapid
shutdowncheckis automatically
displayed.Evenif you tap No, the
rapid shutdownfunctionis still
valid.
2. If you enableRapidshutdown,
check whetheran optimizer is
installedfor each PV module.
If you tap No, the screenfor
addingdevicesis displayed.

7
(Optional) Upgrading the Software
4.4
1. Obtain the upgradefile from your dealeror Huaweiengineers.
2. On the Android system, you can copy the upgradefile to the mobile phone. Theupgradefile name extension
must be .zip, the file can be flexibly stored, and Manually selectis supported.
3. On the iOS system, you can import the upgradefileto the app through amailbox. Theupgradefile name
extension must be .zip, and Manually select is not supported.
4. Upgradingthe safety box or optimizer lasts for 10–20minutes.
NOTE
2. Selectthe appropriateupgrade
packageand finish the upgrade.
1. ChooseUpgrade deviceonthe
Operationconsolescreento
upgradethe optimizer or smart PV
safety box.
5. Pressthe Rapidshutdown
button within60sas prompted.
If you tap Exit, the screen for
addingdevicesis displayed.
6. After rapidshutdownsucceeds,
releasethe buttonas prompted.
The inverter will start in 10 minutes.

1. If the LED indicatorof the safety box is blinkinggreenslowly(at 0.5 Hz), check whetherits communications
cable is connectedcorrectlyor checkits communicationsparameter settings.Thesame RS485baud rate should
be set for the safety box, inverter,power meter, and battery that implement RS485communication.
2. If setting safetybox communicationsparameters fails,set the inverter baud rate to 9600 bps, and then perform
three cyclesof press + releaseoperationson the shutdownbuttonwithin 1 minute. Then,the RS485
communicationsparameters of the safety box are restored to default values,and the LEDindicatorblinks red
and green (red for 0.25s,green for 0.25s, lastsfor 20s).
3. If the message "The PLCfrequencyband is congested.Switchthe frequencyband."is displayedon the app,
changethe PLCfrequencyband. Thechangeprocesstakes about 3 minutes. Do not power off the safety box.
Communication Fault
5.1
4.3
5Maintenance
8
4. After communicationis successful,the optimizer
information is displayedin Deviceinfoon the
Operationconsolescreen.
1. Log in to the app, accessthe
Operationconsolescreen,
and then chooseComm
config.
2. ChooseSmartPV safetybox
configuration.ThensetRS485
baud rate and PLC frequency band.
3. ChooseRS485Setting,and
then set the Baudrate for the
inverter.
Baud rate
9600 (default),19200
Frequency
band
500K
-3.7M(default),
1.5M
-4.7M
Optimizer output power
Optimizer position
Green
Theoptimizer is running properly.
Gray
Theoptimizer runs abnormally.Check whetherits SN
and positioninformation are correct.
Thensearch
the
optimizer again.
Red
Theoptimizer is faulty. Troubleshootaccordingtothe
optimizer manual.
Optimizer alias

9
Replacing the Safety Box
5.2
(1) Log in to the app and access the
OperationConsolescreen.
ChooseGrid-connectconfig>
Expert.
(2) ChooseFeatureparametersand
enableUnlockoptimizer.Unlock
optimizer exits automaticallyafter
unlockingis complete.
NOTICE
Replacethe safety box if any of the followingfaults
occurs.
•Theappearanceis seriouslydamaged.
•Cablesare seriouslydamaged.
•TheLED indicatorstatusdoesnot match the actual
status.
•Thekey button is damaged and fails.
•Thekey button is not damaged, but the shutdown
functionfails.
•Obtain the user's consentbefore replacingthe safety
box, as the invertermay have no outputduring the
replacement.
•Thesafety box can be replacedonly 30 secondsafter
you turn off the DC input switch on the inverter and
the switch on the AC outputloop.
1. Turnoff the DC input switchon the inverterand the switchon the AC output loop.
2. Remove the old safety box.
3. Install a new safety box, as shownin the chapter2.
4. Turnon the DC inputswitch on the inverterand the switchon the AC output loop.
5. Log in to the FusionHomeapp,unlock optimizers (as shownin the followingfigure),and then add the optimizers
again(see sections4.2 and 4.3). You need to performthis step whenreplacingthe safety box, optimizer, or
inverter.