Tigo EI User manual

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Tigo EI
Residential Solar Solution
US Installation Manual (w/ATS 200A)

©20230531 Tigo Energy Inc. 002-00149-00 1.0 | www.tigoenergy.com
Disclaimer of Warranties and Limitation of Liability
The information, recommendations, descriptions, and safety disclosures in this document are
based on Tigo Energy, Inc.’s (“Tigo”) experience and judgment and may not cover all
contingencies. If further information is required, consult a Tigo representative. Sale of the
product shown in this document is subject to the terms and conditions outlined in Tigo’s Limited
Warranty, Terms and Conditions, and any other contractual agreements between Tigo and the
purchaser.
THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES, EXPRESSED OR
IMPLIED, INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR
MERCHANTABILITY, OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY
EXISTING CONTRACT BETWEEN THE PARTIES. ANY SUCH CONTRACT STATES THE
ENTIRE OBLIGATION OF TIGO. THE CONTENTS OF THIS DOCUMENT SHALL NOT
BECOME PART OF, OR MODIFY ANY CONTRACT BETWEEN, THE PARTIES.
In no event will Tigo be responsible to the purchaser or user in contract, in tort (including
negligence), strict liability or otherwise for any special, indirect, incidental, exemplary, reliance
or consequential damage or loss whatsoever, including but not limited to injury to persons,
damage or loss of use of property, equipment or power systems, loss of profit, cost of capital,
loss of power, additional expenses in the use of existing power facilities, or claims against the
purchaser or user by its customers resulting from the use of the information, recommendations
and descriptions contained herein. The information contained in this document is subject to
change in Tigo’s sole discretion and without notice.
Document Version History
Version
Date
Changes
1.0
20231531
Initial release

Contents
Overview.........................................................................................................................................1
This Manual .................................................................................................................................2
Safety..........................................................................................................................................2
Pre-Installation ................................................................................................................................4
Location.......................................................................................................................................4
Component Layout .......................................................................................................................4
Component Dimensions ................................................................................................................4
Wiring Overview...........................................................................................................................5
Inverter Power Connections.......................................................................................................5
ATS Power Connections.............................................................................................................5
Battery Power Connections ........................................................................................................6
The EI Inverter................................................................................................................................7
Box Contents ...............................................................................................................................7
Enclosure Overview ......................................................................................................................7
MAC ID ....................................................................................................................................7
DC Disconnect and Enclosure Knockouts ....................................................................................8
Status Indicators.......................................................................................................................8
Mounting .....................................................................................................................................9
Communications Connections......................................................................................................10
Power Connections.....................................................................................................................14
Grounding Points ....................................................................................................................14
Wiring ....................................................................................................................................15
E-Stop Switch for Rapid Shutdown ..............................................................................................19
The EI Automatic Transfer Switch (ATS) .........................................................................................21
Box Contents .............................................................................................................................21
Enclosure Overview ....................................................................................................................22
Mounting ...................................................................................................................................23
Wiring .......................................................................................................................................24
Load Connections....................................................................................................................25
Grid Connections.....................................................................................................................26
Inverter Connections...............................................................................................................27
Generator Connections (TSI-200-US-G only).............................................................................29

Service Disconnect Lock..............................................................................................................31
Manual Bypass Switch ................................................................................................................31
Reverse the Bypass Procedure ....................................................................................................33
Status Indicators ........................................................................................................................34
The EI Battery...............................................................................................................................35
Box Contents .............................................................................................................................35
Enclosure Overview ....................................................................................................................35
Place and Prepare ......................................................................................................................36
Connect to the Inverter ..............................................................................................................38
Add Batteries .............................................................................................................................41
Status Indicators ........................................................................................................................45
Forced Start/Shutdown ...............................................................................................................46
TAP and TS4 MLPE ........................................................................................................................47
Install the Tigo Access Point (TAP) ..............................................................................................47
Install TS4 MLPE ........................................................................................................................50
Commissioning ..............................................................................................................................52
Check Connections ......................................................................................................................52
Power On the System .................................................................................................................52
Run the Tigo Energy Intelligence App ..........................................................................................53
Set System Info ......................................................................................................................53
Select Equipment ....................................................................................................................54
Configure Layout ....................................................................................................................58
Configure Communication........................................................................................................62
Set Up System Access .............................................................................................................62
Reference .....................................................................................................................................63
Error Codes................................................................................................................................63
Inverter Warning Codes ..........................................................................................................63
Inverter Fault Codes ...............................................................................................................64
System Fault Codes.................................................................................................................65
Decommissioning .......................................................................................................................66
Maintenance ..............................................................................................................................66
Specifications .............................................................................................................................66
Warranty ...................................................................................................................................66

Customer Support..........................................................................................................................67
Appendix A – UL 1741 PCS CRD Section 208 Information.................................................................68
Integrations ...............................................................................................................................68
Time of Use ...............................................................................................................................69
Self-Consumption .......................................................................................................................70
Backup ......................................................................................................................................70
Zero Export................................................................................................................................71
Appendix B – Configuring HECO Requirements ................................................................................72

Overview
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Tigo Help Center 1
Overview
The Tigo EI Residential Solar Solution optimizes home energy consumption based on rate plans
and today’s energy needs. It’s built with the following components:
1. EI Inverter – A 7.6kW or 11.4kW hybrid inverter may be installed grid-tied only or as
part of an energy storage system (ESS) when paired with up to four Tigo EI batteries.
2. TS4 MLPE – Tigo’s PV module-level power electronic (MLPE) components optimize solar
module performance and provide module-level monitoring and rapid shutdown. A Tigo
Access Point (TAP) with a wired connection to the inverter communicates with TS4
components wirelessly.
3. EI Battery – Up to four lithium-iron-phosphate (LFP) EI batteries are designed for use
specifically with the EI solution.
4. EI Automatic Transfer Switch (ATS) – The ATS senses grid loss and safely switches
from grid + solar/battery power to solar/battery power only. It also supports adding a
generator to the solution.
5. The Tigo Energy Intelligence platform and mobile app enables easy system
commissioning and provides comprehensive ongoing visibility into system and module
performance.

Overview – This Manual
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 2
This Manual
This manual provides instructions for installing the following components of a complete Tigo EI
Residential Solution:
•EI Inverter
•EI ATS 200A
•EI Battery
•TS4 MLPE
If using
an ATS 50A, refer to the EI
Residential Solar Solution US Installation Manual
(w/ATS 50A)
on the tigoenergy.com Downloads page.
Safety
The EI system must be installed and maintained only by qualified personnel in accordance with
applicable electrical codes.
The inverter DC disconnect switch must be OFF for five minutes before opening the
inverter cover.
The
ATS 200A service disconnect breaker must be OFF for five minutes before
opening the
ATS cover.
Failure to follow instructions herein may cause equipment damage not covered by the
warranty.
In addition:
•Components must operate within the technical specifications listed in their data sheets.
•Use only copper conductors rated 75°C or higher. Do not use fine-stranded conductors.
•Unused conduit openings must be properly sealed and connected conduit must use
appropriate fittings. Tigo EI product enclosures are rated IP65.
•Always wear appropriate PPE and use insulated tools.
•This product could expose the user to chemicals known to the State of California to
cause cancer. For more information refer to www.P65Warnings.ca.gov.
•The inverter has no isolation transformer and it must be installed with an ungrounded
PV array in accordance with NEC 690.35 and 690.43.

Overview – Safety
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 3
These symbols appear on Tigo enclosures:
Risk
of electrical shock.
Risk
of burns.
Check
the operating instructions.
Caution,
the inverter may retain high voltage for up to five minutes after
disconnection.
Avoid tampering.
Observe c
aution.
Ground
ing connection.

Pre-Installation – Location
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 4
Pre-Installation
Location
EI enclosures are NEMA 4/IP65 rated for indoor and outdoor exposure. To optimize
performance and extend service, locate the enclosures:
•In a well-ventilated, easily accessible location.
•On a flat surface against a solid wall with ≤15° tilt.
•Sheltered from direct sunlight and excessive moisture. The ambient temperature is
ideally below 50°C.
•Away from antennas or other sources of electromechanical interference.
•Above potential flooding.
Component Layout
Follow these guidelines when planning how to mount components:
Inverter
•As close as possible to the main service panel to minimize AC voltage drop.
•At least 3m/36in above the ground.
•With a minimum 300mm (12in) clearance around the top and sides.
E-Stop rapid shutdown switch
•Adjacent the inverter and service entrance.
•Clearly visible and accessible to first responders and maintenance workers.
ATS
•Adjacent the inverter and service entrance.
•With a minimum 300mm (12in) clearance around all sides.
Battery
•On level ground.
•With a minimum 914mm (36in) side and top clearance from other system
enclosures/objects.
Component Dimensions
Plan on accommodating the following approximate dimensions (width/height/depth):
Component
Width/Height/Depth
Weight
Inverter 7.6kW
400 x 570 x 170mm (15.75 x 22 x 6.7in)
14.6kg (32.3lbs)
Inverter 11.4kW
400 x 640 x 190mm (15.75 x 25.2 x 7.5in)
20.5kg (45.2lbs)
ATS 200A
450 x 550 x 180mm (17.7 x 21.7 x 7.1in)
29.7kg (65.5lbs)
Battery
650 x 1160 x 320mm (25.6 x 45.7 x 12.6in)
140kg (308.6lbs)

Pre-Installation – Wiring Overview
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 5
Wiring Overview
The EI system can operate on 208 or 240VAC at 60Hz. For detailed wiring instructions, refer to
the following EI Inverter, EI ATS, TAP and TS4 MLPE, and EI Battery sections.
Inverter Power Connections
ATS Power Connections

Pre-Installation – Wiring Overview
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 6
Battery Power Connections

The EI Inverter – Box Contents
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 7
The EI Inverter
This section includes:
•Box Contents
•Enclosure Overview
•Mounting
•Communications Connections
•Power Connections
•Rapid Shutdown – E-Stop Switch
For detailed specifications, download the EI Inverter data sheet from the tigoenergy.com
Downloads page.
Box Contents
The EI Inverter box includes:
•EI Inverter
•Quick Start Guide
•Mounting bracket
•Tigo Access Point (TAP)
•Rapid Shutdown label
•E-Stop rapid shutdown switch
•DC wire ferrules (3.8kW: 12, 7.6kW:16, 11.4kW:20)
•AC wire ferrules (5)
•2-pin plug for 12V ATS communications connection (not included with all models)
•3-pin plug for RS-485 ATS communications connection
•6-pin plug for ATS communications connection (installed on the EI ATS)
•Grounding ring terminal
•Hex-head self-tapping screws (inverter mounting, 5)
•Philips-head screw (E-Stop mounting, 4)
•White wall anchors (inverter, 5)
•Green wall anchors (E-Stop, 4)
•WiFi antenna
•Cellular antenna (only with cell-enabled models)
•.875in OD knockout for 1/2in plug with nut
•1.375” OD knockout for 1in plug (2)
•1.375” OD knockout for 1in plug with nut (2)
Enclosure Overview
MAC ID
A label with the inverter’s MAC ID and a tigoenergy.com
QR code is located on the left side below the specifications
label.

The EI Inverter – Enclosure Overview
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 8
DC Disconnect and Enclosure Knockouts
Status Indicators
The status indicator LEDs in the center of the inverter front panel show the EI system’s current
operating conditions.
Symbol
Action
Description
Power
Continuous
Feed in grid
Flashing 3s on/1s off
DC on/AC off
Flashing 1s on/3s off
DC off/AC on
Flashing .5s on/.5s off
Checking
Flashing 2s on/2s off
Standby mode
Off
Disconnected
Communications
Continuous
4G/WiFi, local WiFi ok
Flashing .5s on/.5s off
Local WiFi connecting
Flashing 1s on/1s off
4G/WiFi failure, local WiFi ok
Flashing 1s on/3s off
Local WiFi failure, 4G/WiFi ok
Off
Failure

The EI Inverter – Mounting
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 9
Battery
Continuous
Operating normally
Flashing 1s on/3s off
Low charge state
Flashing .5s on/.5s off
Fault detected
Off
Disconnected
Fault
Continuous with audible alarm
Arc fault
Continuous
Fault
Flashing 1s on/1s off
Warning
Off
No faults detected
Mounting
To mount the inverter:
1. Choose a location on a plumb wall with adequate clearance, free from direct sun and
precipitation.
2. Affix the inverter top bracket using screws appropriate for the wall surface.

The EI Inverter – Communications Connections
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 10
3. Hang the inverter on the bracket and affix the bottom bracket.
Communications Connections
You must
make communications connections to the TAP (if used), ATS, and
battery
for the EI system to operate as an energy storage system (ESS).
Inverter communications connections include:
•A wired connection to the TAP (if used).
•An antenna to connect to a WiFi or cell network.
•Wired connections to the ATS and battery.
To connect an antenna:
•Attach the provided WiFi or cell antenna to the appropriate inverter
ANT 1 (left, WiFi) or
ANT 2 (right, cell) port on the bottom of the inverter.

The EI Inverter – Communications Connections
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 11
To connect to a TAP when used with TS4-O/S/M MLPE:
1. Prepare a 4-wire or CAT5/6 cable:
•Shielded if running next to PV conductors
•20 – 18 AWG or CAT5/6 twisted pairs
•Solid core
•Cable outside diameter (OD) ≤9mm (.35in)
2. Connect the cable to the left side of the nearest TAP using either the quick-connect (4-
wire) or the terminal block (4-wire or CAT5/6).
3. At the inverter, terminate the wires at the 4-pin TAP plug from bottom to top: –, +,
Data B, Data A.

The EI Inverter – Communications Connections
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 12
To connect to the ATS, first determine if your inverter has a two-pin COM power terminal
socket. This image shows an occupied socket:
If absent, disregard 12V DC cable instructions and only connect the two-wire RS-485 cable.
1. Prepare:
•A two-wire 18–20 AWG 12V DC cable
•A two-wire RS-485 cable
2. Locate the 2-pin, 3-pin, and 6-pin plugs included in the EI Inverter and EI ATS box
Accessories bags. The 2-pin plug is not included with models lacking a 2-pin socket.
3. At the inverter, connect the 12V DC cable to the
+ and – terminals on the 2-pin plug
and install the plug.
4. At the inverter, connect the RS-485 cable to the
A and B terminals on the 3-pin plug
and install the plug
5. At the ATS, connect the 12V DC cable to the
+12 and GND terminals on the 6-pin CN8
plug and install the plug.
6. At the ATS, connect the RS-485 cable from the A terminal of the inverter 3-pin plug to
the A terminal on the 6-pin
CN9 plug.
7. At the ATS, connect the RS-485 cable from the B terminal of the inverter 3-pin plug to
the B terminal on the 6-pin
CN9 plug.
8. Install the plug.
Inverter
ATS

The EI Inverter – Communications Connections
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 13
To connect to the battery:
1. In the battery’s inverter connection wirebox on the left side of the enclosure, plug a
CAT5/6 cable into the
COM INV terminal.
2. At the inverter, plug the cable into the battery COM terminal.
Battery
Inverter
To connect COM cables to multiple batteries, refer to the EI Battery section.

The EI Inverter – Power Connections
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 14
Power Connections
Ensure the inverter DC disconnect switch is OFF before making connections.
Grounding Points
Equipment grounding conductor (EGC):
Grounding electrode conductor (GEC):

The EI Inverter – Power Connections
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 15
Wiring
Prepare ferruled conductors using copper, non-fine-stranded wire:
•Enclosure grounding: 10 – 8 AWG
•AC (grid or ATS): 8 – 6 AWG
•DC (PV): 12 – 8 AWG
•DC (battery): 12 – 8 AWG
Always calculate conductor AWG based on wire length and current load
.