OutBack Power ProHarvest PRO208-5k75 User guide

ProHarvest PRO208-5k75
(HiQ TS208-5k75)
Inverter System
Installation & Safety Manual

ProHarvest Contact Information
Address: Corporate Headquarters
17825 – 59th Avenue N.E.
Suite B
Arlington, WA 98223 USA
Website: http://www.outbackpower.com
Disclaimer
PROHARVEST BY OUTBACK POWER:
(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR
OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION. (b) ASSUMES NO
RESPONSIBILITY OR LIABILITY FOR LOSS OR DAMAGE, WHETHER DIRECT, INDIRECT, CONSEQUENTIAL OR
INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH
INFORMATION WILL BE ENTIRELY AT THE USER’S RISK. (c) RESERVES THE RIGHT TO MAKE CHANGES TO THE
PRODUCTS AND INFORMATION CONTAINED IN THIS DOCUMENT WITHOUT NOTICE.
Notice of Copyright
ProHarvest PRO208-5k75 Inverter System Installation & Safety Manual ©2016 OutBack Power Technologies.
All Rights Reserved.
Trademarks
ProHarvest, the ProHarvest logo, the phrase “ProHarvest by Outback Power”, and OutBack Power are
trademarks owned and used by OutBack Power Technologies, Inc. HiQ, the HiQ logo, and TrueString are
trademarks owned and used by HiQ Solar, Inc. These trademarks may be registered in the United States and
other countries.
Date and Revision
Revision B, February 2017
Part Number
900-0203-01-00 Rev B

Table of Contents
Table of Contents..............................................................................................................................3
1. Audience....................................................................................................................................5
2. Safety.........................................................................................................................................5
2.1. Symbols Used .............................................................................................................................................. 5
2.2. General Safety Provisions, Warnings, and Precautions .............................................................................. 6
3. Introduction ...............................................................................................................................7
3.1. System Overview......................................................................................................................................... 7
ProHarvest 208V Inverter .................................................................................................................... 8
Communications Gateway .................................................................................................................. 8
4. System Ordering & Part Number Identification ..........................................................................9
5. Design Guidelines.....................................................................................................................11
5.1. DC Stacking Ratio ...................................................................................................................................... 11
5.2. Notes on Location ..................................................................................................................................... 11
Inverter Placement ............................................................................................................................ 12
Gateway Placement .......................................................................................................................... 12
5.3. Notes on Wiring ........................................................................................................................................ 12
AC Cable ............................................................................................................................................ 12
Grounding.......................................................................................................................................... 13
Neutral............................................................................................................................................... 13
Use with a Transformer..................................................................................................................... 13
Site Surge Suppression ...................................................................................................................... 13
6. Installation...............................................................................................................................14
6.1. Cautions..................................................................................................................................................... 14
6.2. Connection Outline ................................................................................................................................... 15
6.3. Basic Connection Procedure ..................................................................................................................... 15
6.4. More Detailed Installation Information .................................................................................................... 19
Meanings of Buttons & Indicators..................................................................................................... 19
Manufacturing Date.......................................................................................................................... 20
6.5. Gateway Information ................................................................................................................................ 21
Array Summary Screen Diagnostics.................................................................................................. 21
The Memory Card.............................................................................................................................. 21
Methods of Accessing System Information ....................................................................................... 22
Registering Inverters ......................................................................................................................... 22
Gateway Touch Screen Menu Structure ............................................................................................ 24
Gateway Web Page Menu Structure................................................................................................. 25
Show or Hide Web Page Controls...................................................................................................... 26
Arc Detection ..................................................................................................................................... 27
Utility Protective Function – Adjustable Limits................................................................................. 28

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 4
System Firmware Updates ................................................................................................................ 29
Gateway Access Inside a Local Network ........................................................................................... 30
Accessing the Gateway from Outside the Local Network — LAN-side configuration ....................... 31
Accessing the Gateway from Outside the Local Network – WAN-side configuration....................... 33
7. Troubleshooting....................................................................................................................... 35
7.1. Overview of Possible Issues ...................................................................................................................... 35
7.2. If this issue was present, it would look like these symptoms ................................................................... 36
7.3. If these symptoms occur, it could be one of these causes ....................................................................... 37
7.4. Notes on Selected Issues........................................................................................................................... 38
Inverter Button Indicator States ........................................................................................................ 38
Other Issues ....................................................................................................................................... 39
(A) Internet Connectivity Issues ......................................................................................................................... 39
(B) Gateway Memory Card Issues ..................................................................................................................... 40
(C) Gateway-to-Inverter Connectivity Issues ..................................................................................................... 40
(D) AC Wiring Issues .......................................................................................................................................... 40
(E) Inverter Installation Issues ........................................................................................................................... 41
(F) PV Module Wiring Issues.............................................................................................................................. 41
8. Specifications ...........................................................................................................................42
8.1. Power System Specifications..................................................................................................................... 42
8.2. Communications Gateway Specifications ................................................................................................. 43
8.3. System UL 1741 Certificates...................................................................................................................... 44
8.4. Unit Rating Label ....................................................................................................................................... 46
8.5. Physical Dimensions & Drilling Guides ...................................................................................................... 46
ProHarvest 208V Inverter .................................................................................................................. 46
Gateway ............................................................................................................................................ 48

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 5
1. Audience
These instructions are for use by qualified electricians or other personnel. Qualified personnel must meet all
local and governmental code requirements for licensing and training for the installation of 3-phase electrical
power systems with AC and DC voltage up to 1000 volts. They must also be familiar with communication
networks. This will require knowledge of acquiring real-time and historical data via computers and other
external devices.
2. Safety
IMPORTANT SAFETY INSTRUCTIONS – Please read
SAVE THESE INSTRUCTIONS
This manual contains important safety instructions for the ProHarvest 208V inverter system, composed of
inverter model PRO208V-5k75 and the Communications Gateway. These instructions shall be followed during
installation and maintenance of the inverter system. The inverter system is designed according to North
America safety requirements. As with any electrical equipment, certain precautions must be observed when
installing this equipment. To reduce the risk of personal injury and to ensure safe installation and operation,
carefully read and follow all instructions, cautions and warnings in this Installation Manual.
2.1. Symbols Used
The following symbols describe situations or procedures or practices which if not correctly performed or
followed could result in damage or destruction of the described equipment or other components attached to
the described equipment, or personal injury.
Symbol Description
CAUTION: Hazard to Equipment
This type of notation indicates that the hazard may cause damage to the equipment.
NOTE:
This type of notation indicates that the information provided is important to understanding the
operation and limits of the equipment. Failure to follow the recommendations in such a notation
could result in improper or failed operation.
The following symbols are used as markings on this product with the following explanations:
Symbol Description
WARNING — DANGEROUS VOLTAGE
This product incorporates high voltages. All handling of and operation of this product should closely
follow the instructions included.
CAUTION — BEWARE OF HOT SURFACE
This product may become hot during operation. Contact should be avoided.

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 6
2.2. General Safety Provisions, Warnings, and Precautions
Connection of the system must be to a 3-phase AC source which is 208 Vac nominal only.
The ProHarvest 208V inverter is provided with DC circuit protection in accordance with the
requirements for ungrounded systems as outlined in NEC 690.35(C).
These systems meet the requirements of NEC 690.11 for DC arc-fault protection.
All electrical installations must be performed in accordance with all applicable local, state and national
requirements, including ANSI/NFPA 70.
Inverters must be provided with an equipment ground according to NEC 690.43.
All 5 circuits (L1, L2, L3, neutral, ground) must be connected and neutral must be bonded to earth
ground. Failure to do so can damage the unit and void the warranty.
The inverter components contain no user-serviceable parts. For all repair and maintenance always
contact an authorized dealer or installation partner.
The ProHarvest 208V inverter has inputs for two separate DC strings.
Reversal of polarity of one or both string inputs will irreparably damage the unit.
Before disconnecting DC cables, use a current clamp meter to measure the presence of current.
If current is present, cover the portion of the array affected (following NEC 690.18).
The inverter system is a utility-interactive system. Before connecting any solar power system to the
grid, contact the local utility company. This connection should only be made by qualified personnel.
PV arrays produce voltages that can present an electrical shock hazard. Wiring of PV arrays should be
performed by qualified personnel following all manufacturer's guidelines.
Be aware that the body of the inverter acts as a heat sink. Under normal operating conditions, the
temperature of the exterior of the enclosure can reach more than 15°C above ambient. Under
extreme conditions the exterior of the enclosures can reach a temperature of 80°C. To reduce risk of
burns, use caution when working with the inverter system.
Communications Gateway AC Connection Procedures
oTo connect: Plug the AC cable into the Gateway FIRST, then plug the other end into the wall outlet.
oTo disconnect: Unplug the cable from the AC wall outlet FIRST, then proceed to disconnect the
cable from the Gateway device.
In order to maintain the integrity of the watertight enclosures, all connectors must be properly and
fully engaged.
The utility connection can suffer from repeated disturbances depending on, atmospheric effects,
utility abnormalities, local loads, and the physical location. These disturbances can damage
equipment. It is recommended that an appropriate surge suppressor be installed near the point of
common connection with the utility.
Before installation, carefully read all instructions, cautions, and warnings in this manual.

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 7
3. Introduction
This instruction manual covers the ProHarvest 208V inverter system. A summary of features and functions
is shown in the table.
Item Inverter
Grid voltage 208 Vac, Wye configuration
Nominal power 5.75 kW
Maximum Power Point Tracking, MPPT Per individual string
Monitoring Per individual string
NEMA6, waterproof ✓
Arc detection ✓
Hand-holdable 24 lb
Mounting orientation Any
No electrolytic capacitors ✓
3.1. System Overview
A typical layout is shown in Figure 1. Note that while the
Communications Gateway provides detailed reporting and
user control, it is optional. The system will generate power
without it.
The ProHarvest 208V is an easy-to-install, modular system
which is optimized specifically for commercial rooftop
ungrounded solar array applications. Unlike other string
inverters, each string is individually monitored and managed
by the inverter.
The main components of the inverter system are described
in the next section.
Figure 1: System overview showing
two strings of PV modules supplying a
single 208 Vac inverter.
A Communications Gateway is shown
connected to one 120 Vac phase.
ProHarvest 208V
Inverter
5.75 kWac
String
1
String
2
Communications
Gateway
208 Vac, 3-phase 5-wire
120 Vac 1-phase
on its own breaker,
same circuit

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 8
ProHarvest 208V Inverter
One inverter connects to up to two strings of PV modules, and in turn to
the 3-phase, 208 Vac compatible utility connection on the installation site.
The ProHarvest 208V inverter is shown in Figure 2. It is a non-isolated
inverter for use with ungrounded DC systems.
NOTE:
Multiple inverter outputs may be connected in parallel by a qualified electrician.
Communications Gateway
One Gateway module connects to a 120 Vac, 60 Hz branch that is connected to the
same 3-phase, 208 Vac compatible utility connection supplied by the inverter(s).
The Gateway module provides for system monitoring, logging and control.
The Gateway module is shown in Figure 3 and is designed for indoor use only.
NOTE:
Internet access should be provided to enable firmware updates and customer support functions.
Figure 3: Communications Gateway
Figure 2: ProHarvest 208V Inverter

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 9
4. System Ordering & Part Number Identification
A typical 5.75 kW system consists of:
1 ProHarvest 208V inverter
1 Communications Gateway which can be used with multiple inverters.
Inverter
Item Part Number Description
Inverter, 5.75 kW, 208 Vac
3-phase
ProHarvest:
PRO208-5k75
(HiQ: TS208-5k75)
Inverter with MC4-compatible connectors (1 each).
MPPT per string, monitoring per string. Includes
10-year limited warranty. Does not include Gateway
or AC cable. These items must be ordered separately.
Inverter, 5.75 kW, 208 Vac
3-phase with RS485
communication and Aux
connector
ProHarvest:
PRO208-5k75-AUX
(HiQ: TS208-5k75-AUX)
Inverter with MC4-compatible connectors (1 each).
MPPT per string, monitoring per string, RS485
communication and Aux connector. Includes 10-year
limited warranty. Does not include Gateway or AC
cable. These items must be ordered separately.
System Warranty Extension
to 25 years for 1 ProHarvest
208V inverter
ProHarvest:
PRO208-5k75-W25
(HiQ: TS208-5k75-W25)
Must be ordered at time of system purchase. Includes
system Gateway(s).
208 Vac inverter AC Cable CBL-208A-05 5 ft. Includes 208 Vac mating connector; the other end
is unterminated.
CBL-208A-15 15 ft. Includes 208 Vac mating connector; the other
end is unterminated.
CBL-208A-30 30 ft. Includes 208 Vac mating connector; the other
end is unterminated.
CBL-208A-50 50 ft. Includes 208 Vac mating connector; the other
end is unterminated.
Connector Tool Kit TOOL-KIT-1
• AC Connector Unlatching Tool (1 each).
• MC4-Compatible Connector Unlatching Tool
(1 each).
ProHarvest:
PROSPL-60
(HiQ: ACSPL-60)
AC combiner splice box, NEMA4 enclosure. Includes
three gland fittings for up to three inverter AC cables.
Inverter AC cables must be ordered separately.

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 10
Communications Gateway
Item Part Number Description
Communications Gateway
ProHarvest:
PROGW-A-120
(HiQ: GW-A-120)
GW-A Communications Gateway 120 Vac (1 each).
Includes Ethernet Cable (1 each), memory card for logging
and storage of results, and 120 Vac power cable.
Memory Card MCRD-A Storage for Gateway results. Generic SD card (model and
capacities supplied will vary).
Gateway Ethernet Cable CBL-RJ45-6 RJ45 8P8C plug on each end.
Color and other details may vary.
Gateway AC Cable CBL-GW120A-6 Gateway 120 Vac cable with AC Plug.

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 11
5. Design Guidelines
5.1. DC Stacking Ratio
The ratio of PV module STC power rating to inverter output power rating is often referred to as “Stacking
Ratio.” Most PV installations are designed for a stacking ratio greater than 1, and less than 1.5. However, the
only real limitation on stacking ratio for the inverter is the voltage and current limitations of the string inputs.
The full power Vmp range for the string inputs is 325 to 525 Vdc. The specified maximum short circuit current
of the DC source is 30A. Two strings with a Vmp of 525 Vdc and a short circuit current capability of 30A would
yield a stacking ratio of almost 8.9.
A more practical limitation is due to the power and current limits imposed by the inverter firmware. Input
power is limited to 3 kW and input current is limited to 10A per string by the firmware. The total of these two
strings exceeds the output power limit of 5.75 kW, so in reality something less than 3 kW would be harvested
from each string.
Ideal stacking ratio varies by installation. For the vast majority of installations, a stacking ratio between 1.25
and 1.5 makes perfect sense. Under some conditions (constant high irradiance) a lower stacking ratio may be
preferred. A stacking ratio of 1.1 to 1.25 typically allows for energy harvest loss factors such as less than ideal
module orientation, inverter efficiency losses, module soiling, module aging, etc. Nevertheless in some cases a
stacking ratio of 1.5 or greater can be advantageous. For example, in the northern hemisphere a north-facing
array or an east or west-facing array may justify a higher stacking ratio.
The system designer is responsible for specifying the string parameters to remain within the inverter ratings.
5.2. Notes on Location
The ProHarvest 208V is suitable for flat, commercial rooftops, carports, ground mounts, and other commercial
installations. It may be placed using the self-ballasting metal casing, or alternatively may be attached to a PV
module frame or roofing component using the provided attachment mechanisms.
A line diagram is shown in Figure 4. Note that the inverter requires a 208 Vac Wye grid configuration.
Figure 4: Example line diagram
Note that up to three inverters may be connected on the same branch to one 60A OCPD if desired.
A NEMA4 AC Splice junction box is available for use with three 208 Vac inverters if desired.
The following sections provide details on individual component placement guidelines and requirements.
AC Splice
box
ProHarvest 208V
Equipment ground supplied
through AC connector
Gateway
208 Vac Wye only — neutral, ground, and three phases
Equipment
ground
Inverter AC cable
(5-foot to 50-foot
lengths available)
ProHarvest 208V
ProHarvest 208V
208 Vac
3ph grid
OCPD
Dedicated
branch circuit
60A OCPD max
OCPD
OCPD
Additional
dedicated
branch circuits
15A OCPD
Neutral, ground,
and one phase
PV String 1
PV String 2
Conductor is a means of
DC disconnect
Conductor is
a means of
AC disconnect
Up to three inverters
on a single 60A OCPD
208 Vac
120 Vac

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 12
Inverter Placement
The ProHarvest 208V inverter is NEMA6 rated and may be placed almost anywhere.
Cooling is most efficient if the unit is mounted vertically in the shade, bolted to
racking and with the connectors pointing downwards. However, any orientation
is acceptable. Ideal placement is at least 1” above the roof, and with 4 to 5”
clearance above the cooling fins to allow air to circulate.
Mounting hardware up to 5/16” will fit the baseplate
mounting slots.
Gateway Placement
Internet access should be provided to enable firmware updates and customer support functions.
The Gateway is rated for indoor installation only. Do not expose it to rain, extreme temperatures, or
excessive dust. It must be mounted indoors. A utility closet or similar location physically close to the
inverter system is ideal. It must be electrically connected to one of the three AC phases used by the
inverter. Note that in large utility closets it is often easy to end up on an unrelated AC circuit
accidentally, in which case communications are unlikely to be successful.
CAUTION: Hazard to Equipment
The Gateway Device is not rated for outdoor installation.
Recommended: Add a 120 Vac outlet at the earliest entry point in the building to provide the best
power line communication (PLC) signal possible. Ideally this would be a 120 Vac outlet next to the
circuit breaker.
Gateway should be protected by a 15A OCPD.
A wired Ethernet network connection must be provided to the Gateway for proper data retrieval.
If outdoor placement is required, the Gateway must be housed in a weatherproof enclosure.
The Gateway has “keyhole” mountings on its baseplate. Each hole has a
guide-hole above. It is intended that these four holes provide a template for
mounting such that a pen or center punch can be inserted through and
marks left on the wall to help accurate drilling of holes. Mounting can be
performed using #8-sized screws.
5.3. Notes on Wiring
AC Cable
The inverter AC cable has a TC-ER rating. The “-ER” signifies that the cable is sufficiently rugged to permit its
use as exposed wiring, according to the NEC (section 336.10). Exposed wiring is wiring that is not installed in a
tray, conduit or other raceway. It must be secured every 6 feet or less and protected from physical damage.
Figure 5: Placement of the
ProHarvest 208V inverter
Figure 6: Gateway baseplate
showing keyhole mounting
and drilling guide hole.

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 13
Grounding
The metal enclosure of the inverter must be grounded according to NEC 690.43.
Equipment ground is provided through the AC connection. Optionally, grounding
may be achieved also through attaching an Equipment Ground Conductor (EGC) to
a lay-in lug (not provided) attached to the chassis as shown in Figure 7.
Grounding may also be achieved using the mounting bolts to any properly
grounded metallic structure provided a paint-cutting washer is employed, such as
a stainless steel star washer.
Neutral
All 5 conductors (L1, L2, L3, neutral, ground) must be connected and neutral must be bonded to earth ground.
Failure to do so can damage the unit and void the warranty. Note that particular care is required to ensure
that an effective neutral connection is maintained when a transformer forms part of the installation.
The inverter exports power only on the “line” (hot) conductors. The neutral conductor is used solely for
voltage sensing and power line communications.
Use with a Transformer
While ProHarvest inverters may be used with a transformer, care must be taken to ensure proper wiring.
Figure 8: Use of the ProHarvest with an isolating transformer
CAUTION: Hazard to Equipment
• Neutral MUST be bonded to equipment ground or damage to the inverter may result.
• When an isolating transformer is inserted into the circuit, the neutral may lose any
path to equipment ground that was provided elsewhere.
• Figure 8 shows an example where the load center bonds the neutral to equipment
ground. Many other system configurations and methods are also possible.
Site Surge Suppression
CAUTION: Hazard to Equipment
Depending on physical location, atmospheric effects, utility abnormalities, and local loads
the utility connection can suffer from repeated disturbances which can damage
equipment. It is recommended that an appropriate surge suppressor be installed near the
Point of Common Connection with the utility.
ProHarvest
Inverter
L1, L2, L3 Phases
(Primary)
Utility connection
Isolating
Transformer L1, L2, L3 Phases
(208 Vac Secondary)
L1, L2, L3 Phases
(
208 Vac
)
Load Center
Neutral Neutral
Neutral Bar
Ground Bar
Equipment GroundGround
Figure 7: Example ground lug

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 14
6. Installation
The ProHarvest 208V inverter employs industry standard connection methods. These include locking
interconnects for PV module attachment, and standard 5-lead, 3-phase AC wiring compatibility.
Careful adherence to these instructions is required.
6.1. Cautions
Make certain to follow all instructions.
CAUTION: Hazard to Equipment
• The system must be connected to 208 Vac 3-phase wye 5-wire only.
• The inverter must be provided with an equipment ground per NEC 690.43.
• All five circuits (L1, L2, L3, neutral, ground) must be connected and neutral
must be bonded to earth ground. Failure to do so can damage the unit and void
the warranty.
• The ProHarvest 208V inverter has inputs for two separate DC strings. Reversal of
polarity of one or both string inputs will irreparably damage the unit. Use a
voltmeter to carefully verify that the DC inputs are correct before connecting to
the inverter DC inputs.
• The Communications Gateway is for indoor use only.
• In order to maintain the integrity of the watertight enclosures:
oAll connectors must be properly and fully engaged.
oUnused connectors must be sealed using appropriate weatherproof caps.
• Do not allow water to enter the AC or DC connectors or the warranty will be void.
WARNING: Shock Hazard
Before disconnecting DC cables, use a current clamp meter to measure the
presence of current. If current is present, cover the portion of the array affected,
according to NEC 690.18.

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 15
6.2. Connection Outline
Connection occurs in the following order:
1. Connect an equipment ground to the inverter. This should always be done first.
2. Connect the inverter to the grid.
3. Connect the Communications Gateway to the same 208 Vac circuit as the inverter and the network.
4. Connect the PV module strings to the inverter inputs.
Disconnection uses these steps in reverse, with system ground being the last item to be disconnected.
6.3. Basic Connection Procedure
1. Ground the inverter.
Equipment ground is provided through the AC connection.
Optionally, a grounding lay-in lug (not supplied) may be used
(Figure 9), or the mounting method may be used if employing a
paint-cutting washer such as a stainless steel star washer.
2. Connect the inverter to the grid.
(a) Connect the inverter to the AC system
in the usual way using the AC cable
(supplied separately). See Figure 10.
This should only be carried out by
qualified personnel.
NOTES
• The unit is only watertight when connectors are fully engaged.
• The inverter AC cables are TC-ER rated
1
.
WARNING: Dangerous Voltage
This product incorporates high voltages.
1
The “-ER” signifies that the cable is sufficiently rugged to permit its use as exposed wiring, by the National Electrical Code.
Exposed wiring is wiring that is not installed in a tray, conduit or other raceway.
Figure 9: Example ground lug
Any color
to any phase
White to
Neutral
Green to
Equipment
Ground
208 Vac 3-phase ONLY
Figure 10: Wiring identification on
the inverter AC cable

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 16
(b) Mate the male and female AC
connector to connect the inverter to the
AC system.
Use the AC tool to disconnect the male
and female connectors. Follow steps 1
through 3 in the Disconnection section
of Figure 11.
3. Connect the Communications Gateway.
CAUTION: Hazard to Equipment
The Gateway Device is rated for indoor installation only.
(a) The Gateway should be located indoors, as near to the inverter(s) as possible for reliable
communications. See Figure 12.
Figure 12: Wiring of the Communications Gateway
Up to 3
inverters
on single 60A
OCPD
ProHarvest 208V
inverter
Means of
AC disconnect
Means of DC
disconnect
Equipment
ground
Gateway
Gateway 120 Vac cable
(sold separately)
CBL-GW120A-6
Additional dedicated
branch circuits
Dedicated
branch circuit
1 phase
(15A OCPD)
Neutral
Ground
Load Center
OCPDs
208 Vac
3-phase
source
3 phases
Neutral
Ground
Inverter AC cable
(sold separately)
Figure 11: Connecting and disconnecting of the
inverter AC connection
Connection
3
1
Disconnection
AC Tool
1
2
3

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 17
(b) Connect power to the Gateway using the
appropriate AC cable (Figure 13). Ethernet
may also be connected at this stage.
(c) Turn on power to the inverter.
On the Gateway screen, select the
Inverters tab Aat the top of the screen
if the unit is not already on that tab.
Press <Setup>, then the <Discover>
button B.
The Gateway will search for all
inverters. Confirm that they indicate
Healthy status as shown in C.
4. Connect the strings of PV modules.
This may be done with the AC source on or off.
This section assumes the source is off.
Do not reverse the polarity of the DC
inputs. This will cause irreparable damage
to the ProHarvest inverter.
All connectors must be fully mated to
ensure weatherproofing.
Use the DC tool to disconnect the male and
female connectors. Follow steps 1and 2in the
Disconnection section of Figure 15.
With the AC off but PV voltage present, the
inverter button will flash red and emit a short
audible beep, indicating a fault. (See Table 2
on page 20.) This is normal when utility grid is
not present.
A
C
B
Connection
Disconnection
1
2
Figure 13: Making Gateway connections
Figure 14: Having the Gateway auto-discover added inverters
Figure 15: Connecting and disconnecting MC4-compatible module connectors
AC Connection Ethernet
Connection
(optional)

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 18
5. Turn on the AC source.
This starts a 5-minute timer.
When it expires, each inverter will
perform a self-test and then begin
generating. During the wait period,
the inverter button will be solid
green. (See Table 2 on page 20.)
This does not apply if the system is
in the Off + Locked state.
The <Off + Unlock> button Bwill
unlock any inverters in the system.
An individual inverter may be
unlocked by pressing the inverter
button three times.
To skip the 5-minute wait, press the
<Power On> button A. The units will
self-test and then begin generating.
(See Table 2 on page 20 for the
LED indications of self-test.)
Once self-test has been successfully completed, power generation begins.
For individual inverters, check the
Gateway Strings screen using the
<Strings> button Cto verify all items
indicate Healthy.
Connection is complete.
C
A
B
Figure 17: Verifying that all modules are operational using the Gateway
Figure 16: Power On and Unlock buttons

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 19
6.4. More Detailed Installation Information
Meanings of Buttons & Indicators
While most installations will use a Communications Gateway to control
and report, it is not mandatory. The inverter can be controlled using
the button, as illustrated in Table 1. A brief press-and-release of the
button counts as a button-push in the guide below. Indications given
by the button illumination are shown in Table 2.
Inverter Button Push Button Indication Result
1 press
• Make inverter beep (“are you alive?”)
2 presses
• Off & Locke
d
(disabled)
• Unit will not begin the 5-minute self-start
3 presses
• Start generating immediately
• If locked, unlock and generate immediately
• If system is faulted, unit will unlock but
will not generate
Long press (>2 seconds)
(Brief flash)
• “Alternate functions” mode
• Ready to accept further button pushes;
this times out after 10 seconds
1 press (after long press)
• Clear latched faults after (for example)
an arc-fault test or RCD (residual-current device)
test initiated a fault condition
3 presses (after long press)
• RCD-test activation; successful operation of RCD
test should cause a fault condition (rapid red
flashing) until cleared
4 presses (after long press)
• Arc-fault test activation; successful operation of
arc-fault detection should cause a fault condition
(rapid red flashing) until cleared
Table 1: Inverter button actions and results

PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B 20
Inverter Indicator State Meaning
Solid
• Powered up
• Not generating
• No faults
Left-right flash
• Power-on self-test
(will take <1 minute)
Green Chaser
• Powered up
• Generating, no faults
Rapid Flash
• Faulted
• Example: arc has been detected
Mostly On
• Off & Locke
d
• Disabled
Mostly Off
• Sleeping
• Not generating
Table 2: Inverter indicator states and meanings
Manufacturing Date
The inverter and Gateway each have an individualized serial number label. An example is shown in Figure 18.
The first 4 letters are for device model code; this is followed by the 6-digit serial number (for example,
001003). The manufacturing date code is available in the QR code, readable with common smartphone
applications. The QR code will give the same information, appended with the date of manufacture, for
example, TSEA001003 1341, where 13 is the year (2013), and 41 the calendar week number.
Figure 18: Example serial number label with QR code containing the manufacturing date
TSEA001003