Ampt Ampt-CU User manual



Manual
AmptCommunicationsUnit
InstallationManual
57070008‐120141110

Copyright2014AMPT,LLC3
InformationandDisclaimer
Copyright 2014 AMPT, LLC. All rights reserved.
No part of this document may be reproduced, retransmitted, or copied in any form without the
expressed and written permission of Ampt.
Ampt makes no representations, expressed or implied, that with respect to this documentation
or any of the equipment and/or software it may describe, including (with no limitation) any
implied warranties of utility, merchantability, or fitness for any particular purpose. All such
warranties are expressly disclaimed. Ampt shall not be liable for any indirect, incidental, or
consequential damages under any circumstances. (The exclusion of implied warranties may
not apply in all cases under some statutes, and thus the above exclusion may not apply.)
The following specifications are subject to change without notice, even though every attempt
has been made to make this document complete, accurate and up-to-date. Readers are
cautioned, however, that Ampt reserves the right to make changes without notice and shall not
be responsible for any damages, including indirect, incidental or consequential damages,
caused by reliance on the material presented, including, but not limited to, omissions,
typographical errors, arithmetical errors or listing errors in the content material.
Ampt LLC
4850 Innovation Drive
Fort Collins, Colorado 80525
Tel [phone]
www.ampt.com

4
ImportantSafetyInformation
Warnings
A warning identifies a hazard to equipment or personnel. It calls attention to a procedure or
practice, which, if not correctly performed, could result in damage to or destruction of part or
all of the Ampt equipment and/or other equipment connected to the Ampt equipment or
personal injury.
The following boxes are used to alert you to important safety information.
Warning:
Indicatesahazardoussituationwhich,ifnotavoided,couldresultindeathorseriousinjury.
Caution:
Indicatesahazardoussituationwhich,ifnotavoided,couldresultinminorormoderate
injury.
Notice:
Indicatesasituationthatcanresultinpropertydamageifnotavoided.
Note:
Thissymbolaccompaniesnotesthatcallattentiontosupplementaryinformationthatyou
shouldknowandusetoensureoptimaloperationoftheAmptsystem.


Copyright2014AMPT,LLC5
TableofContents

InformationandDisclaimer.............................................................................................................3
ImportantSafetyInformation..........................................................................................................4
Warnings..............................................................................................................................................................4
Chapter1:Introduction...........................................................................................................7
GeneralDescription.........................................................................................................................7
Specifications...................................................................................................................................8
ModbusRegisterMap......................................................................................................................9
DimensionalDrawing.....................................................................................................................10
PhysicalOverview..........................................................................................................................10
Labels.................................................................................................................................................................10
Internal...............................................................................................................................................................11
UnderstandingtheStatusLEDs......................................................................................................12
Chapter2:InstallingtheAmpt‐CU........................................................................................13
InstallingtheEthernetCableFeed‐through....................................................................................14
MountingtheEnclosure.................................................................................................................16
ConnectingPoweroverEthernet...................................................................................................17
ConfiguringtheAmpt‐CUNetworkSettings...................................................................................18
RestoringFactoryDefaults.............................................................................................................19
Appendix...............................................................................................................................21
Compliance....................................................................................................................................21
FCCCompliance..................................................................................................................................................21

Chapter 2: Installing the Ampt-CU
Copyright2014AMPT,LLC.7


Chapter1:
Introduction
GeneralDescription
The Ampt communications unit (Ampt-CU) provides
wireless two-way communication with every Ampt
converter
The Ampt-CU links to your SCADA or monitoring
system via Modbus to provide highly accurate and
synchronous data. This solution eliminates the need
for smart combiners which lowers costs.
With Ampt communication, system designers,
operators, owners, and financiers gain a level of
transparency and predictability unmatched by
conventional monitoring solutions.
This improved system planning and decision-making capability lowers PV project risk and
increases return on investment.
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8
Specifications
SystemLayout 
PVblocksize Upto3200 kWpDC
AmptconvertersperAmpt‐CUUpto2000
Exampleoflayout 125stringsx16modules/string =2000Amptconverters
Maximumradiocommunications
operatingrange200mradius
DataCommunications 
InterfacewithdatamonitoringsystemModbus/TCP
ConnectionwithdatamonitoringEthernet10/100Base
T
InterfacewithAmptconvertersTwo‐waywireless
Resolution 
MeasurementaccuracyAmperage:±0.25%
Reportingrate,typical5minutes,2000converters
Localdatastorage45 dayrollingbuffer
Electrical 
PowersupplyPoweroverEthernet(PoE)
PoweroverEthernet(PoE)Class0,802.3afModesAandB,802.3atType1(RJ‐45connector)
Mechanical 
EnclosureIP‐66
Dimensions13.82”x10.54”x5.35”
(35.10 cmx26.77cmx13.59cm)
Weight5.6lbs(2.5kg)
Ambienttemperature,operating‐40
°
Fto+185
°
F(‐40
°
Cto+85
°
C)
General 
ComplianceFCCPart15,classB
IEC60950‐1,61000‐6‐1,61000‐6‐3



Chapter 2: Installing the Ampt-CU
Copyright2014AMPT,LLC.9
ModbusRegisterMap
Ampt StringViewrecords use the SunSpec protocol for device ID and variable record
length, enabling site-specific operation. The SunSpec Common Model precedes the map
below. Contact Ampt or one of our monitoring partners for more information.
Start
offset
SizeNameType R/W Description
11IDUint16 RAmptSunSpecVendorCode64050
21LUint16 RVariablenumberof16bitregisterstofollow:
12+N*16
FixedBlock(15
)

31DCA_SFInt16 RCurrentscalefactor
42Reserve
d
‐‐
61DBWh_SFInt16 REnergyscalefactor
71Reserve
d
‐‐
81NUint16 RNumberofstrings
96Reserve
d
‐‐
Registerblocksforstringdatafollow.Repeatblockforeachstring.Twostringsareshownasanexample.
151StringIDInt16 RThestringnumber.
162Reserve
d
‐ ‐
182StringdatatimestampUint32 RTheUTCtimestampofthemeasurements.
201OutDCA Int16 RStringoutputcurrentinmA
216Reserve
d
‐ ‐
272DCWhUint32 RDailyintegratedstringoutputenergy
292Reserve
d
‐ ‐
311StringIDInt16 RThestringnumber.
322Reserve
d
‐‐
342StringdatatimestampUint32 RTheUTCtimestampofthemeasurements.
361OutDCA Int16 RStringoutputcurrentinmA
376Reserve
d
‐‐
432DCWhUint32 RDailyintegratedstringoutputenergy
452Reserve
d
‐‐
Repeatblockforadditionalstrings

10
DimensionalDrawing
Figure1:Ampt‐CUdimensionaldrawing
PhysicalOverview
Labels
Figure2:Serialnumber,modelnumber,andMACaddresslabels
Serialandmodel
numberlabel
MACaddresslabel