Go Power GP-PWM-30-UL User manual

GP-PWM-30-UL
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© 2018 GoPower!
User Manual

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Contents
1.0 Installation Overview 4
1.1 Introduction 4
1.2 System Voltage and Current 4
1.3 Battery Type 4
1.4 Low Voltage Disconnect Function (USB Port) 5
1.5 Regulatory Information 5
1.6 Specifications 5
2.0 IMPORTANT SAFETY INSTRUCTIONS 7
3.0 Tools and Materials Needed 8
4.0 Choosing a Location 9
5.0 Installation Instructions 10
6.0 Wiring Diagram 13
6.1 Charging Only One Battery 13
6.2 Charging Two Batteries 14
7.0Operating Instructions 15
7.1 Power Up 15
7.2 Setting the Battery Type and Charging Profile 15
7.3 Battery Charging Profile Chart 17
7.4 Maximum Power Boost Technology™ 17
7.5 Viewing the Controller Display Information 18
7.6 Errors 20
8.0 Display Symbols 22
9.0 Inverter Control (on/off) 24

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10.0 USB Charging 25
11.0 Frequently Asked Questions (FAQs) 26
12.0 Troubleshooting Problems 28
12.1 Problems with the Display 28
12.2 Problems with Voltage 29
12.3 Problems with Current 29
13.0 Limited Warranty 32
13.1 Repair and Return Information 32
14.0 Installation Template 32

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1.0 Installation Overview
1.1 Introduction
A Solar Controller (or Charge Controller / Regulator) is an essential
component of your photovoltaic solar system. The Controller maintains
the life of the battery by protecting it from overcharging. When your
battery has reached a 100% state of charge, the Controller prevents
overcharging by limiting the current flowing into the batteries from your
solar array.
The GP-PWM-30-UL uses Pulse Width Modulation (PWM) technology
and a unique four stage charging system that includes an optional
equalize setting to charge and protect your battery bank. The GP-PWM-
30-UL features an LCD digital display that shows the charge current of
the solar array, system battery voltage and battery state of charge. The
GP-PWM-30-UL also features Maximum Power Boost Technology™ for
manual bulk and absorption charge at any stage of the charge cycle.
1.2 System Voltage and Current
The GP-PWM-30-UL is intended for use at 12 VDC system voltage and
is rated for a maximum continuous DC input current of 37.5A and input
voltage of 35VDC.
Per the National Electric Code (NEC) article 690.7 and 690.8, PV module
nameplate ratings must be multiplied by required values (typically 1.25
for both voltage and current) to obtain the true voltage and continuous
current available from the module.
Applying the NEC factors, the maximum allowable nameplate PV Panel
rated Isc is 30A (30A x 1.25 = 37.5A), and the maximum voltage, Voc is
28VDC (28VDC x 1.25 = 35VDC).
The voltage and current ratings of all equipment connected to PV panels
must be capable of accepting the voltage and current levels available
from PV panels installed in the field.
1.3 Battery Type
The GP-PWM-30-UL is suitable for use with lead acid batteries (vented,
GEL, or AGM type).

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PV CHARGE CONTROLLER
ALSO FOR LAND VEHICLES
NO. E497008
1.4 Low Voltage Disconnect Function (USB Port)
To prevent the battery against over-discharge this function automatically
switches off the USB output port when Battery 1 voltage is lower than
11.0 VDC. As soon as Battery 1 reaches a voltage of 12.8 VDC the USB
output port is switched on again.
1.5 Regulatory Information
1.6 Specifications
Description
Value
Dimensions
(H x W x D):
108 x 190 x 35 mm
4.25 x 7.48 x 1.38 in
Weight: 300g / 10.6 oz
Maximum Wire Gauge:
#4 AWG
Warranty: 5 years
•PWM Charging
•3 Battery Charging
profiles
•4 Stage Charging
•Monthly Equalize
option
•Displays Charging
Current, Battery
Voltage and Battery
State of Charge
•Reverse Polarity
protected
•Temperature
Compensated
Model
GP-PWM-30-UL
Nominal System Voltage
12 VDC
Charging Output Voltage
Range Battery 1
9.0 – 14.9 VDC
Charging Output Voltage
Range Battery 2
9.0 – 14.9 VDC
Maximum Charge Current
Battery 1
37.5A
Maximum Charge Current
Battery 2
37.5A
Maximum DC Input Voltage
35.0 VDC
Range of DC Input Voltage
9.0 – 35.0 VDC
Maximum DC Input
Operating Current
37.5 A
Maximum DC Short Circuit
Current
37.5
Max. Series Fuse or Circuit
Breaker
Solar/Battery 1/Battery 2
50 A

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Operating Consumption
(Display backlight on)
15mA
•RoHS Compliant,
environmentally safe
•Accepts up to 495
watts of solar at 12
volts
•Maximum Power
Boost Technology
Operating Consumption
(Display backlight off)
6mA
Battery Types Supported
Vented and Sealed (GEL, AGM etc.)
Lead Acid
Bulk/Absorption Voltage
(Sealed/Gel, AGM,
Flooded)
14.1/14.4/14.4V (25°C / 77°F),
30min / Day
or 2hr if battery voltage < 12.3V
Float Voltage
13.7V (25°C / 77°F)
Equalization Voltage
14.9V (25°C / 77°F),
2h / 28 Days
or if battery voltage < 12.1V
Temperature Compensation
- 24mV/ºC / 13mV/ºF
USB charger
5V, 800mA
Low Voltage Disconnect
(USB)
11.0 VDC
Reconnects once battery reaches
12.8V
Operating Temperature
Display Operating
Temperature
- 40 to 60°C / - 40 to 140°F
- 10 to 55°C / 14 to 131°F
Charge Current De-Rating
(Based on internal
temperature of the
controller)
Internal Temp.
Max Charge
Output Current
<80°C/176°F
37.5A
80°C/176°F
22.5A
81°C/177.8°F
15A
82°C/179.6°F
7.5A
>82°C/179.6°F
0A
Humidity
99% N.C.
Protection
Battery Reverse Polarity, Solar Array
Reverse Polarity, Over Temperature,
PV Short Circuit, Over Current

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2.0 IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
THIS MANUAL CONTAINS IMPORTANT INSTRUCTIONS FOR MODEL
GP-PWM-30-UL THAT SHOULD BE FOLLOWED DURING
INSTALLATION AND MAINTENANCE OF THE GP-PWM-30-UL.
Disconnect all
power sources
Electricity can be very dangerous. Installation
should be performed only by a licensed
electrician or qualified personnel.
Battery and
wiring safety
Observe all safety precautions of the battery
manufacturer when handling or working around
batteries. When charging, batteries produce
hydrogen gas, which is highly explosive.
Wiring
connections
Ensure all connections are tight and secure.
Loose connections may generate sparks and
heat. Be sure to check connections one week
after installation to ensure they are still tight.
Work safely
Wear protective eyewear and appropriate
clothing during installation. Use extreme
caution when working with electricity and when
handling and working around batteries.
Observe
correct polarity
Reverse polarity of the Battery 1 terminals will
cause the controller to give a warning tone.
Reverse connection of Battery 2 terminals will
not cause an alarm. However, the controller
will not charge or display information for
Battery 2 on the LCD. The controller will not
function unless Battery 1 terminals are
connected to a battery with proper polarity.
Failure to correct this fault could damage the
controller.
Do not exceed
the GP-PWM-
30-UL max
current ratings
The maximum current of the solar system is
the sum of parallel-connected PV module–
rated short circuit Currents (Isc) multiplied by
1.25. The resulting system current is not to
exceed 37.5A. If your solar system exceeds
this value, contact your dealer for a suitable
controller alternative.
Do not exceed
the GP-PWM-
30-UL max
voltage ratings
The maximum voltage of the array is the sum
of the PV module–rated open-circuit voltage of
the series connected modules multiplied by
1.25 (or by a value from NEC 690.7 provided in
Table 690.7 A). The resulting voltage is not to
exceed 35V. If your solar system exceeds this
value, contact your dealer for a suitable
controller alternative.

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IMPORTANTES INSTRUCTIONS DE
SECURITE
CONSERVEZ CES INSTRUCTIONS
CE MANUAL CONTIENT DES INSTRUCTIONS IMPORTANTES POUR
LE MODÈLE GP-PWM-30-UL QUI DOIVENT ÊTRE SUIVIES PENDANT
L’INSTALLATION ET L’ENTRETIEN DU GP-PWM-30-UL.
Débranchez
toutes les
sources
d’énergie
L’électricité peut être très dangereuse.
L’installation ne doit être effectuée que par un
électricien agréé ou du personnel qualifié.
Sécurité de la
batterie et du
câblage
Respectez toutes les consignes de sécurité du
fabricant de la batterie lorsque vous manipulez
des batteries ou que vous travaillez à proximité
de celles-ci. Lors de leur chargement, les
batteries produisent de l’hydrogène gazeux
hautement explosif.
Branchements
de câblage
Assurez-vous que tous les branchements sont
serrés et sûrs. Des branchements lâches
peuvent produire des étincelles et de la
chaleur. Vérifiez tous les branchements une
semaine après l’installation pour vous assurer
qu’ils sont toujours serrés.
Travaillez en
toute sécurité
Lors de l’installation, portez des lunettes de
protection et des vêtements adaptés. Faites
preuve d’une grande prudence lorsque vous
travaillez avec du matériel électrique et lorsque
vous manipulez des batteries ou que vous
travaillez à proximité de celles-ci.
Respectez la
polarité
correcte
Une polarité inversée des bornes de la batterie
1 provoquera un signal sonore du régulateur.
Une polarité inversée de la batterie 2 ne
provoquera pas d’alarme. Cependant, le
régulateur ne chargera pas et n’affichera pas
d’informations relatives à la batterie 2 sur
l’écran CL. Le régulateur ne fonctionnera que
si ses bornes batterie 1 sont connectées à une
batterie avec la polarité appropriée. Si ce
défaut n’est pas corrigé, le régulateur risque
d’être endommagé.

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Ne dépassez
pas le courant
nominal
maximum du
GP-PWM-30-UL
Le courant maximum du système solaire est la
somme des courants de court-circuit (Isc) des
modules PV connectés en parallèle, multipliée
par 1,25. Le courant du système qui en résulte
ne doit pas excéder 37,5 A. Si votre système
solaire dépasse cette valeur, veuillez contacter
votre revendeur pour obtenir un régulateur plus
approprié.
Ne dépassez
pas la tension
nominale
maximum du
GP-PWM-30-UL
La tension maximum des panneaux est la
somme des courants de court-circuit (Isc) des
modules PV connectés en parallèle, multipliée
par 1,25 (ou par une valeur de l’article 690.7
du Code National Électrique fournie dans le
tableau 690.7 A). La tension qui en résulte ne
doit pas excéder 35 V. Si votre système solaire
dépasse cette valeur, veuillez contacter votre
revendeur pour obtenir un régulateur plus
approprié.
3.0 Tools and Materials Needed
•Flathead Screwdriver (for wire terminals)
•Philips Screwdriver (for mounting screws)
If the GP-PWM-30-UL Controller was purchased with a
Go Power! RV Solar Power Kit, then UV resistant wire is
included. For instructions regarding the Go Power! RV
Solar Power Kit installation, please refer to the
Installation Guide provided with the Kit.
4.0 Choosing a Location
The GP-PWM-30-UL is designed to be mounted flush against a wall, out
of the way but easily visible.
The GP-PWM-30-UL should be:
•Mounted as close to battery 1 as possible
•Mounted on a vertical surface to optimize cooling of the unit
•Indoors, protected from the weather
In an RV, the most common controller location is above the refrigerator.
The wire from the solar array most commonly enters the RV through the

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fridge vent on the roof or by using the Go Power! Cable Entry Plate (sold
separately) that allows installers to run wires through any part of the roof.
PV connections should connect directly to the controller. Positive and
negative battery connections must connect directly from the controller to
the batteries. Use of a positive or negative distribution bus is allowed
between the controller and battery as long as it is properly sized,
electrically safe and an adequate wire size is maintained.
5.0 Installation Instructions
1. Prepare for mounting. Use the template provided on page 31
to mark the four mounting holes and the cutting line for flush
mounting your controller.
2. Complete the installation of the solar modules. If this
GP-PWM-30-UL was purchased as part of a Go Power! Solar
Power Kit, follow the Installation Guide provided. Otherwise,
follow manufacturer’s instructions for solar module mounting and
wiring.
Do not exceed
the GP-PWM-
30-UL max
current ratings
The maximum current of the solar system is
the sum of parallel-connected PV module–
rated short circuit Currents (Isc) multiplied by
1.25. The resulting system current is not to
exceed 37.5A. If your solar system exceeds
this value, contact your dealer for a suitable
controller alternative.
Do not exceed
the GP-PWM-
30-UL max
voltage ratings
The maximum voltage of the array is the sum
of the PV module–rated open-circuit voltage of
the series connected modules multiplied by
1.25 (or by a value from NEC 690.7 provided in
Table 690.7 A). The resulting voltage is not to
exceed 35V. If your solar system exceeds this
value, contact your dealer for a suitable
controller alternative.
Ne dépassez
pas le courant
nominal
maximum du
GP-PWM-30-UL
Le courant maximum du système solaire est
la somme des courants de court-circuit (Isc)
des modules PV connectés en parallèle,
multipliée par 1,25. Le courant du système qui
en résulte ne doit pas excéder 37,5 A. Si votre
système solaire dépasse cette valeur, veuillez
contacter votre revendeur pour obtenir un
régulateur plus approprié.

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Ne dépassez
pas la tension
nominale
maximum du
GP-PWM-30-UL
La tension maximum des panneaux est la
somme des courants de court-circuit (Isc) des
modules PV connectés en parallèle, multipliée
par 1,25 (ou par une valeur de l’article 690.7
du Code National Électrique fournie dans le
tableau 690.7 A). La tension qui en résulte ne
doit pas excéder 35 V. Si votre système
solaire dépasse cette valeur, veuillez
contacter votre revendeur pour obtenir un
régulateur plus approprié.
3. Select wire type and gauge. If this GP-PWM-30-UL was
purchased as part of a Go Power! Solar Power Kit, appropriate
wire type, gauge and length is provided. Please continue to
Section 6, “Operating Instructions.” If the GP-PWM-30-UL was
purchased separately, follow the instructions included here.
Wire type is recommended to be a stranded copper UV resistant wire.
Wire fatigue and the likelihood of a loose connection are greatly reduced
in stranded wire compared to solid wire. Wire gauge should be able to
sustain rated current as well as minimize voltage drop.
Wire Strip Gauge
You will find a strip gauge
diagram on the back of the GP-
PWM-30-UL, which helps you to
strip your wires to the correct
length. Insert wire into the
concave slot of the strip gauge
until it meets the back of the
Strip Gauge slot. Mark the
length of wire from the back of
the Strip Gauge slot to the edge of the controller with a pen or your finger
and strip all wires to be connected to the controller to this length.
Suggested Minimum Wire Gauge
(Cable length 25 ft. max. from solar array to battery bank)
Wire Type
Wire size min (AWG)
Wire size Max (AWG)
Copper Only
90°C
AWG 10
AWG 4
IMPORTANT: Identify the polarity (positive and negative) on the cable
used for the battery and solar module. Use colored wires or mark the

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wire ends with tags. Although the GP-PWM-30-UL is protected, a
reverse polarity contact may damage the unit.
Wiring the GP-PWM-30-UL.Wire the GP-PWM-30-UL according to the
wiring schematic in Section 6. Run wires from the solar array and the
batteries to the location of the GP-PWM-30-UL. Keep the solar array
covered with an opaque material until all wiring is completed.
IMPORTANT: All wiring must be in accordance to National Electrical
Code, ANSI/NFPA 70.
4. Connect the battery wiring to the controller first and then
connect the battery wiring to the battery.
5. Torque all terminal screws per the following:
Stranded Copper 90°C Wire
Wire Size AWG
Rated Torque (in-lbs)
10
20
8
25
6
35
4
35
With battery power attached, the controller should power up and display
information. Connect the solar wiring to the controller and remove the
opaque material from the solar array. The negative solar array and
battery wiring must be connected directly to the controller for proper
operation. Do not connect the negative solar array or negative battery
controller wiring to the chassis of the vehicle.
6. Mounting the GP-PWM-30-UL.Mount the GP-PWM-30-UL to
the wall using the included four mounting screws.
IMPORTANT: You must set the battery type on the GP-PWM-30-UL
before you begin to use the controller. The default battery setting is for
AGM batteries.
Congratulations, your GP-PWM-30-UL should now be operational. If the
battery power is low and the solar array is producing power, your battery
should begin to charge.
7. Re-torque: After 30 days of operation, re-torque all terminal
screws to ensure the wires are properly secured to the controller

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WARNING: This unit is not provided with a GFDI device. This
charge controller must be used with an external GFDI device as
required by Article 690 of the National Electric Code for the
installation location.
AVERTISSEMENT : Cet appareil n’est pas équipé d’un
détecteur de défaut de terre. Ce régulateur de charge doit être
utilisé avec un détecteur de défaut de terre comme l’exige
l’article 690 du Code National Électrique pour l’emplacement de
l’installation.
6.0 Wiring Diagram
The GP-PWM-30-UL Maximum 37.5A rating is based on a 30 amp total
maximum short circuit current rating (Isc) from the solar modules
nameplate ratings. The National Electric Code specifies the PV
equipment/system rating to be 125% of the maximum Isc from the PV
module ratings (1.25 times 30 = 37.5A). E.G. Three modules in parallel
with an Isc of 7 amps each equal a total Isc input of 21 amps. When
selecting PV modules for use with the GP-PWM-30-UL do not exceed a
total nameplate Isc current of 30A. Solar modules list the Isc amps on
their specifications nameplate label.
6.1 Charging Only One Battery
Use the following wiring diagram if you are using the GP-PWM-30-UL to
charge only one battery. Connect your battery to the battery 1 terminals
on the solar controller.
Note: The fuse or
breaker used
should be no larger
than 50 amps

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The controller will not work unless there is a battery
connected to the Battery 1 terminals
WARNING: When the photovoltaic (solar) array is
exposed to light, it supplies a dc voltage to this
equipment
AVERTISSEMENT : Lorsque le panneau photovoltaïque
(solaire) est exposé à la lumière, il fournit une tension cc à cet
équipement.
6.2 Charging Two Batteries
Use the following wiring diagram if you are using the GP-PWM-30-UL to
charge two separate battery banks. Connect battery bank 1 to the battery
1 terminals and battery bank 2 to the battery 2 terminals on the back of
the solar controller.
IMPORTANT: Ensure your primary/permanent battery (house bank) is
connected to the battery 1 terminals. Connect your secondary battery to
battery 2 terminals only. Your permanent battery (battery 1) will receive
the full current first. Once battery 1 is fully charged, the full current will be
available to charge battery 2.
The controller will not work unless there is a battery
connected to the battery 1 terminals.
Note: The
fuses or
breakers
used should
be no larger
than 50
amps.

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WARNING: When the photovoltaic (solar) array is
exposed to light, it supplies a dc voltage to this
equipment
AVERTISSEMENT : Lorsque le panneau photovoltaïque
(solaire) est exposé à la lumière, il fournit une tension cc à cet
équipement.
7.0 Operating Instructions
7.1 Power Up When the GP-PWM-30-
UL is connected to the
battery, the controller will
go into Power Up mode.
Icons Displayed: All
segments of the
numerical display;
Backlight blinks
Depending on the
battery voltage when the GP-PWM-30-UL Power Up occurs, the
controller may do a Boost Charge or quickly go into Float Charge. The
Charging Profile selected will commence the following day after a Power
Up (refer to the Charging Profile Chart on page 17 for more details).
7.2 Setting the Battery Type and Charging Profile
Setting Battery 1
To set the battery type for
Battery 1, hold the B
Button for 3 seconds.
When the display shows a
blinking number 1,
release the B Button.
GP-PWM-30-UL Solar Controller
GP-PWM-30-UL Solar Controller

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Next, select the charging
profile of Battery 1 by
pressing the B Button to
toggle through the profile
options: Sealed/Gel, AGM
or Flooded.
To confirm the battery
profile, press and hold the
A Button for 3 seconds.
Setting Battery 2
If you have a second
battery connected, the
controller will immediately
prompt you to set the
battery type for Battery 2
with a blinking number 2.
If there is not a second battery connected to the
controller, or if the second battery is connected with
reverse polarity, the controller will not prompt you to select battery type
for Battery 2, and no status information will be displayed on the LCD
screen.
To select the charging
profile of Battery 2, press
the B Button to toggle
through the profile
options: Sealed/Gel,
AGM or Flooded.
To confirm the battery
profile, press and hold
the A Button for 3
seconds.
Non-volatile memory: Any settings made on the GP-PWM-30-UL will be
saved even when the power has been disconnected from the controller.
Refer to the Battery Charge Profile Chart below for details on each
profile.
GP-PWM-30-UL Solar Controller
GP-PWM-30-UL Solar Controller
GP-PWM-30-UL Solar Controller
GP-PWM-30-UL SOLAR CONTROLLER
GP-PWM-30-UL SOLAR CONTROLLER
GP-PWM-30-UL SOLAR CONTROLLER

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7.3 Battery Charging Profile Chart
Auto Equalize: The GP-PWM-30-UL has an automatic equalize feature
that will charge and recondition your batteries once a month at a higher
voltage to ensure that any excess sulfation is removed.
This feature is only available when Flooded batteries are
selected.
7.4 Maximum Power Boost Technology™
Maximum Power Boost Technology™ (MPBT) allows you to override the
normal charging algorithm of the solar controller. MPBT is designed to be
used before the end of the day, if you know you will require many loads
through the night. This feature can also be used when you have just
installed the solar controller, to put batteries on a boost charge up to 14.4
VDC (Flooded and AGM) (14.1 VDC for Sealed/Gel) right away.
To activate, hold the MAX
BOOST Button for 3
seconds. As long as there
is full sunlight present, your
battery voltage will be
boosted (to 14.4 VDC for
Flooded and AGM and
14.1 VDC for
SEALED/GEL) for 30
minutes regardless of the
battery’s state of charge.
Battery Type
SEALED
/GEL
AGM
FLOODED
Float Charge @ 25°C:
13.7 VDC (+/- 0.1 V)
Bulk/Absorption Charge @ 25°C:
Set to 30 minutes every morning. Applied for 2
hours if the battery voltage drops below 12.3
volts.
14.1 VDC
(+/- 0.1V)
14.4 VDC
(+/- 0.1V)
14.4 VDC
(+/- 0.1V)
Equalization Charge @ 25°C:
Applied for 2 hours every 28 days and if the
battery voltage drops below 12.1 volts.
N/A
N/A
14.9 VDC
(+/-0.1V)
If a charging cycle is unable to complete in a single day, it will continue the following day.
The terms SEALED/GEL, AGM and FLOODED are generic battery designations. Choose
the charging profile that works best with your battery manufacturer’s recommendations.
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Icons Displayed: BOOST; Battery Symbol
In older controllers, the BOOST text icon will remain on until the
controller can maintain a Boost charge voltage for 30 cumulative
minutes. In newer controllers, the BOOST text icon will only appear while
the controller is maintaining a Boost charge voltage.
IMPORTANT: Do not use the Maximum Power Boost function more than
twice a day as it could damage your batteries due to gassing.
If sunlight is insufficient or not available, completing Max
Power Boost may take much longer than 30 minutes from
the time of the button press. Max Power Boost and the BOOST icon
cannot be turned off by pressing the Max BOOST button.
7.5 Viewing the Controller Display Information
The GP-PWM-30-UL has
two modes to watch the
display information, manual
and auto scroll.
You can change between
the two modes by holding
down the A Button for 3
seconds.
Mode 1: Manually Scroll Through Display Information
Battery 1 Status Values
To toggle between Battery
Voltage, PV Charging
Current and Battery State
of Charge (SOC) for
Battery 1 and 2, press the
B Button.
Push the B Button to show
the voltage for Battery 1.
Icons Displayed: Battery SOC, Volt Symbol (V), Symbol 1
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GP-PWM-30-UL Solar Controller

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Push the B Button to show
the PV charging current for
battery 1. The GP-PWM-
30-UL will begin to limit the
current as Battery 1
reaches a full charge. The
current that is not used for
Battery 1, is used to charge
Battery 2.
Icons Displayed: Arrow,
Ampere Symbol (A),
Battery SOC, Symbol 1
The battery state of charge
is shown as a percentage.
Icons Displayed: Battery
SOC, Percent Symbol (%),
Symbol 1
A value of 100% will only
be displayed after a Boost
or Equalize charge
completes.
Battery 2 Status Values
Push the B Button to show
the battery 2 voltage.
Icons Displayed: Battery
SOC, Volt Symbol (V),
Symbol 2
This will only be displayed
if there are two battery
banks connected and
battery bank 2 is connected
with correct polarity.
Push the B Button to show
the PV charging current for
battery 2. The GP-PWM-
30-UL will begin to limit the
current as the battery 2
reaches a full charge.
GP-PWM-30-UL Solar Controller
GP-PWM-30-UL Solar Controller
GP-PWM-30-UL Solar Controller
GP-PWM-30-UL Solar Controller

GP-PWM-30-UL
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© 2018 GoPower!
Icons Displayed: Arrow, Ampere Symbol, Battery SOC, Symbol 2
The battery state of charge
is shown as a percentage.
Icons Displayed: Battery
SOC, Percent Symbol (%),
Symbol 2
Mode 2: Automatically Change Display Information
You can select the auto mode by holding down the A Button for 3
seconds.
The display shows the same information as in Mode 1 but changes the
display automatically every 8 seconds between following information:
Battery 1: Voltage; PV Charging Current; Battery State of Charge (SOC)
Battery 2: Voltage; PV Charging Current; Battery State of Charge (SOC)
If Battery 2 is not connected, the Controller changes only the
information for Battery 1.
7.6 Errors
Over Voltage
If the GP-PWM-30-UL
experiences a battery over
voltage (15.5 VDC) on
battery bank 1, the
controller will stop
operating, and the display
will begin to flash with all
icons. The controller will
resume operating when the
voltage drops to a normal
level <15.5 VDC.
Icons Displayed: All symbols
GP-PWM-30-UL Solar Controller
GP-PWM-30-UL Solar Controller