SOMMY EH8 User manual

EH8SinglePhaseDigitalVoltage/AmpereMeter
User sManual
KKEH8E01-A/0-1
1.CodeIllustration
EH8-
Features:
B:Range:450V×5A D:Otherrange
(mm)8:48H×96W×100L
EHSeriesvoltage/amperemeter
EH SeriesDigitalVoltage/AmpereMeter
⊙Accuracy: ±0.5%F.S
⊙Canmeasure:voltage,current
⊙Input andoutput arecompletelyisolated.
⊙Withhigh/lowlimitsettablealarmsof voltage/ current .
⊙With4-20mAanalogoutput forvoltage/ current.
⊙WithRS485communicationinterface，ModbusRTUcommunicationprotocol
⊙Canmeasuretrue/effectivevalue .
⊙Menusettingcanbeoperatedconveniently,
Foryoursafety, pleaseread following content carefullybeforeyouareusing the meter!
SafeCaution
Pleaseread the manualcarefullybeforeyou usethe meter!
Pleasecomplywiththe belowimportant points:
Warning
Notice
Anaccidentmayhappen iftheoperation doesnotcomplywiththeinstruction.
Anoperationthatdoesnotcomplywiththe instruction maylead toproductdamage.
The instruction ofthe symbolinthe manualisasbelow:
Anaccident dangermayhappen inaspecialcondition.
Warning
1.A saftyprotection equipmentmust be installed orpleasecontactwithusforthe relativeinformation ifthe
productisused underthecircumstancesuchasnuclearcontrol,medicaltreatmentequipment,automobile,
train,airplane,aviation, entertainmentorsaftyequipment, etc.Otherwise,itmaycauseseriousloss,fire
orperson injury.
2.A panelmustbe installed,otherwiseitmaycausecreepage (leakage).
3.Donottouchwireconnectorswhen thepowerison,otherwiseyou maygetan electricshock.
4.Donotdismantleormodifythe product. Ifyou havetodo so,pleasecontactwithusfirst.Otherwiseitmay
causeelectricshock and fire.
5.Pleasecheckthe connectionnumberwhileyou connectthe powersupplywireorinput signal,otherwiseit may
causefire.
1 .Thisproductcannotbe used outdoors.Otherwisethe working lifeoftheproductwill becomeshorter,oran electric
shockaccidentmayhappen.
2.When you connectwiretothe powerinputconnectorsorsignalinput connectors,the momentofthe No.20AWG
(0.50 mm2)screwtweakedtothe connectoris0.74n.m-0.9n.m.Otherwisetheconnectorsmaybe damagedorget
fire.
3.Pleasecomplywiththe ratedspecification.Otherwiseit maycausefireaftertheworking lifeof theproduct
becomesshorter.
4.Donotusewateroroilbasecleanertoclean the product. Otherwiseitmaycauseelectricshock orfire,and
damage theproduct.
5. Thisproductshouldbeavoidworking underthe circumstancethatisflammable,explosive,moist,undersunshine,
heatradiationandvibration.Otherwiseitmaycauseexplosion.
6. Inthisunit itmustnothavedustordeposit,otherwiseit maycausefireormechanicalmalfunction.
7. Donotusegasoline,chemicalsolventtocleanthe coverofthe productbecausesuchsolventcan damage it.
Pleaseusesomesoftclothwithwateroralcoholtoclean theplasticcover.
Caution
Dimension
Output function ： R:without analog D:withanalog(4-20mA)
Alarmfunction:A: Without alarmfunctionB: withone loopofalarmC:withtwoloopsof alarm
10 ： Singlephaseinput18 ： SinglephaseinputwithRS485communication

2.MainTechnicalParameter
Measuring function
Dimension(mm)
Voltage,ampere
±0.5%FS
AC/DC 100-240V
DC 2000V1min
＞100MΩ
48H×96W×100L
EH8-A10B
EH8-A18B
EH8-RB10B
EH8-RB18B
EH8-RC10B
EH8-RC18B
EH8-DA10B
EH8-DA18B
EH8-DB10B
EH8-DB18B
EH8-DC10B
EH8-DC18B
without
without
without
without
without
without
4-20mA
4-20mA
4-20mA
4-20mA
4-20mA
4-20mA
Code Alarm Analog
without
RS485
without
RS485
without
RS485
without
RS485
without
RS485
without
RS485
Communication
Input
without
without
one
one
two
two
without
without
one
one
two
two
B ： 5Ax450V
D ： Otherrange
couldbeordered
4.Operation Sequence
↓
↓
Measuring status
Enteralarmsetting status
↓
↓
SET＞3s
Measuring status
3.PanelIndication
K
A
mA
KKEH8E01-A/0-2
PressSET ＞ 3Sorwithout anyoperation morethan 60s
Relay capacity AC250V/3AorDC 30V/5A
Inputimpedance Voltageinputimpedance:≥2MΩ(450V) , currentinput impedance:≤0.02Ω(when directinput is0～5A)
Direct inputrange
Displaying mode
CT
Measuring accuracy
Samplingspeed
Powersupply
Voltage:AC6-450VCurrent:AC0.015-5A
DuallineLEDdisplay
1.0-1999settable
About 2times/s
Dielectricstrength
Communication
Analog output RS485communicationinterface,adopt ModbusRTUprotocol
DC4-20mAanalogoutput,accuracy:±0.5%FSloadingability≤600Ω
Insulated impedance
Ambienttemperature 0～50℃,Relativehumidity≤85%RH
Voltageindicationlight
Currentindication light
AL1:Alarm1indicateLight
AL2:Alarm2indicateLight
Measuringvalue/Parameter
Decreasekey
Increasekey
Shift key
ConfirmKey
Note ： *When the measured voltage beyond 1000V, the “KV”indicating lightwill be on , otherwisethe “v”indicating light on.
When the measured current beyond 1A, the “A”indicating light willbe on , otherwisethe “mA”indicating light on .
Poweronandreset
MeterSelf-check

Ad1:1st alarmmode setting;VL:low limit alarmof voltage
VH:highlimit alarmof voltage,AL:low limit alarmof current
AH:highlimit alarmof current，ex-factorysetting isAH
SET
→
SET＞3S
HY1:1st alarmhystersissetting;setting range-1999～9999.
Eg:If alarmmode Ad1 be set toAHhighlimit alarmof current,
andAL1 set to4.5,HY1set to0.1, when actualmeasured
current value≤(4.5-0.1), it willstop alarm。Note: othercodes
alarmsetting aresimilartotheabove,ex-factorysettingis0.100
bAd: baud rate,Baudrateoption: 4.8Kbit、
9.6Kbit , Ex-factorysetting is9.6Kbit,
SET
SET
SET
SET
→
SET
SET
SET
SET
SET
SET
SET
SET
SET
Ad2:PleaserefertoAd1，
AL2: PleaserefertoAL1，
HY2:PleaserefertoHY1，
ex-factorysetting isAL
ex-factorysetting is0.500
ex-factorysetting is0.100
KKEH8E01-A/0-3
SET
SET
Measuring status
→
→
AL1:1st alarmsetting menu ,setting range:-1999~9999 .
eg.If the firstalarmmodeAd1 set toAH(high limit alarm
of current)andthe AL1set to4.5, whenthe measured
current value≥4.5 ,themeterwillalarmautomatically.
Ex-factoryvalue is4.500
Ct: Current transformsetting:
settablerangeis1.0-1999, onlyforcurrent channel. E.g.,
ifthe meterneedtomeasure20Acurrent, theCTvalue
shouldbe setas4.000(20/5=4.000), sincethemax.
current thatcanbe inputtothemeteris5A. Ex-factory
settingof CTis 1.00 .
Note: ACT(currenttransformer) shouldbe equipped with
themeterif themeasured current ishigherthan 5A.
LCK:Menu lock:settingvalue000or010
when it is000, theparameterscouldbe
modified, whenitis010 , alltheparameters
couldn t bemodified. Ex-factoryvalue is000
APS:CurrentAmendment value. therange is
-1999to9999. Itistoamend the measured
current, Displayvalue=Measured value+APS
value,Ex-factorysettingvalue is0.000.
VPS:VoltageAmendment.value . the range is
-1999to9999. Itistoamend the measured
voltage, Displayvalue=Measuredvalue+VPS
value,Ex-factorysettingvalue is0.000.
rL:Analogoutput lowlimitsetting value,value
rangeis-1999to9999.If it isset ascurrent
analogoutput, the value istobe lowlimit of
measured current. Ex-factorysetting is0.000
rH:Analog output highlimit setting,value
rangeis-1999to9999.If it isset ascurrent
analogoutput, the value istobe highlimitof
measured current. Ex-factorysetting is5.000
brm:Analog output modeselection isasbelow:
A: Currentanalog
V:Voltageanalog
Ex-setting isA
Add:Commnunicationaddress.
Settablerangeis0-255.
Ex-factorysetting is000.
▲
2.PressSETkeytoselect theparameterneedingmodified,presstomaketheparameterflick,andpresstoset neededvalue
andpressSET keytoconfirmthemodifying.Press tomaketheneedingmodifiedparameterflick,press ▲+toshiftthedecimal
point, pressSET keytogoonforanothermenu.
3.Undersettingstatus，longpress SET>3scan returntomeasuringstatus.
▲
▲
Theinstruction forthe abovemenu operation and settingsareasbelow:
1. PressSETkeyfor3seconds，
themeterwill showtheparametersettingmenu.
/
▲

5.Connecting Drawing
6.Dimension (Unit:mm)
KKEH8E01-A/0-4
96 100
94
6
45
91.5
25
45.5+0.5
-0
+0.5
-0 25
48
Note:If thereisanychanges,pleasesubject tothedrawingonthe actualmeter
Panel size Side-face size Mounting size
1、Availableambienttemperatureis0～50℃，relativehumidityisbelow85% .
2、Itshouldbeadjustedeveryyear.
3、Avoid
4、Ifitisstoredforalongtimeandunused,connect onpowerformorethan4hoursonceevery3months.
5、Don t exploseit inthesunshinelongterm,theavailablestoretemperatureis0～50℃.humidityshouldbebelow60%.
Pleasemakesurenot tocontactwith
vibrationandcrash. Don tuseitunderthe circustancewhichisoverdusty/ harmfulchemicalsand gas.
gasoline,chemicalsolvent
7.Caution

12345678
8. Communication protocol
EH8seriesmeteradpotsModbusRTUcommunicationprotocol, RS485halfduplexcommunication,readfunctioncode0x03,
writefunctioncode0x10,adpots16digit CRC check,themeterdoesnot feedbackwhencheck error
.
Dataframeformat:
Communication abnormalsolution:
Whenabnormalanswer,thehighestbit of functioncodewillbe setto1.Forexample, if therequest functioncodefrommasterunit is0x04,
thereturnfunctioncodefromthe meteris0x84.
Errortype code
0x01---Functioncodeerror:Themeterdoesnot supportthefunctioncode itreceives.
0x02---Datapositionerror: The datapositionassigned bymasterunit isout of therangeofmeter
the
0x03---Datavalueerror:Thedatavaluesentfrommasterunitisoutoftherangeof themeter
Startbit Databit Stop bit Checkbit
11 8No
8.1.Read multi-register
Forexample,masterunitreadsfloatdataAL1（1stalarmvalue241.5)
TheaddresscodeofAL1is0x0000,becauseAL1isfloatingdata(4byte), itcovers2dataregisters.AccordingtoIEEE-754, thestandard
hexadecimalmemorycodeof decimalistfloat data241.5is0x00807143.
Masterunit request(Readmulti-register)
0x010x030x00 0x000x000x020xC40x0B
MeteraddressFunctioncode Startaddress
Highbit Startaddress Lowbit Databyte lengthLowbit
Databyte
lengthHighbit CRC code
Lowbit CRC code highbit
Slaveunitnormalanswer(Readmulti-register)
123456789
0x010x030x040x000x800x710x430x9E0x7A
MeteraddressFunctioncode Databyte
number Data1
High bit Data1
Lowbit
Slaveunitabnormalanswer(Readmulti-register)
12389
0x010x840x010x820xC0
MeteraddressFunctioncode Errorcode
Functioncodeabnormalanswer:(Forexample, masterunitrequest functioncodeis0x04)
8.2.Writemulti-register
Forexample：
Masterunit readsfloat dataHY1（1stalarmhysteresisvalue20.5).TheaddresscodeofHY1is0x0001, becauseHY1is
float data(4bytes),seizes2dataregisters. AccordingtoIEEE-754standard,thehexadecimalmemorycodeof decimalistfloatdata
20.5is0x0000A441.
12345678910111213
0x010x100x000x010x000x020x040x000x000xA40x410x880x93
12345678
0x010x100x000x010x000x020x100x08
12389
0x010x900x020xCD 0xC1
Dataposition erroranswer:(Forexample, masterunit requestwriteaddressindexis0x0050)
Data1
highbit Data2 highbit
Data1
lowbit Data2
lowbit
Data2
High bit Data2
Lowbit CRC code
Lowbit CRC code
highbit
CRC codeLowbit CRC codehighbit
Meter
address Function
code
Start
address
High bit
Start
address
Lowbit
Data
byte
length
Highbit
Data
byte
length
Lowbit
Data
byte
length
CRC
code
Lowbit
CRC
code
highbit
Masterunit request(Writemulti-register)
Meter
address Function
code Startaddress
High8bit Startaddress Low8bit Databyte
lengthHighbit Databyte
lengthLowbit CRC code
Lowbit CRC code
high bit
Slaveunitnormalanswer(Writemulti-register)
Slaveunitabnormalanswer(Read multi-register)
MeteraddressFunctioncode Errorcode CRC codeLowbit CRC codehighbit
KKEH8E01-A/0-5

Displayrange
Read/Writeallow
Remark
0x0000
2 -1999~9999 R/W
1
0x0001
2 -1999~9999 R/W
2
0x0002
2 -1999~9999 R/W
3 0x0003
2 -1999~9999 R/W
4 0x0004
Current transformCT 2 -0.000~9999 R/W
5 0x0005
Hihg limit valueof analogrH
2 -1999~9999 R/W
6 0x0006
Lowlimitvalueofanalog rL 2 -1999~9999 R/W
7 0x0007
VoltageamendvalueVPS 2 -1999~9999 R/W
8 0x0008
Current amendvalueAPS 2 -1999~9999 R/W
9 0x0009
FullrangeofvoltageFSV 2 0.000~9999 R
1
0 0x000A
FullrangeofcurrentFSA 2 0.000~9999 R
1
1 0x000B
Voltageeffectivevalue
2 0.000~9999 R
1
20x000C
Current effectivevalue
2 0.000~9999 R
Reservation
Reservation
2
0 0x0014 1stalarmmode Ad1
1 0~9 R/W Note
Note
2
1 0x0015 2ndalarmmodeAd2
1 0~9 R/W
2
2 0x0016 AnalogmodebrM 1 0~3 R/W ②
2
3 0x0017 Menulock LCK 1 0~255 R/W
2
4 0x0018 BaudratebAd 1 0~1 R Note
Note
③
2
5 0x0019 Addressofthemeter Add 1 0~255 R
2
6 0x001A
Measuringstatusindicate
1 0~255 R
2
7 0x001B Name 1 0xDE R
Addresscode
1stalarmvalueAL1
1stalarmhysteresisHY1
2ndalarmvalueAL2
2ndalarmhysteresisHY2
0
No. Variablename Byte
length
8.3.EH8parameteraddressreflection table
Note:address codeistheindexof variablearray
④
High limit alarm
Communicationdatavalue
Lowlimitalarm
Communicationdatavalue
Alarmitem
VH 0 VL 1 Voltage
AH 2 AL 3 Current
Note :Alarmmode
Note②:Analogmode
Communication
value
0 1
Displaymenu
VA
Analogitem
Voltage Current
0 1
9.64.8
Communication
value
Menudisplay
Note :Baudrate
KKEH8E01-A/0-6

:Measuringstatusindicate
④
Note
D7 D6 D5 D4 D3 D2 D1 D0
AL2 AL1 mA AKV V
Theprogramofdecimalistfloat dataconvertsto4bytecharactercodeasIEEE-754standards.
Programofobtaining16digitsCRC checking code
Theprogramof4bytecharactercode floatdataconvertstodecimalistfloatdata
KKEH8E01-A/0-7