Morningstar Sunlight SL-10 Manuale utente

SOLAR LIGHTING CONTROLLER

PERATOR

’

ANUAL

SUNLIGHT MODELS

INCLUDED IN THIS MANUAL

•

SL-10

10A / 12V

•

SL-10-24V

10A / 24V

•

SL-20

20A / 12V

•

SL-20-24V

20A / 24V

1098 Washington Crossing Road

Washington Crossing, PA 18977 USA

Website: ww.morningstar.com

inches (mm)

4 MOUNTING HOLES ø0.20 (5.0)

1.32

(34)

2.18

(55)

1.00

(25)

6.60 (168)

6.10 (155)

4 3 2 1 6 5

SEALED

FLOODED

SELECT

SOLAR LIGHTING CONTROLLER

+–+–+–

12 Volts

10A Solar

10A Load

LOW VOLTAGE

DISCONNECT

TEMP. SENSE

MORNINGSTAR

TEST

LIGHTING CONTROL

CHARGING

OFF

3/1

4/2

6/2

D/D

System Voltage

12 12 24 V

Maximum Voltage

30 30 50 V

Rated Solar Input

10 20 n/a A

PV Short Circuit Rating

12.5 25 n/a A

Rated Load

10 20 n/a A

25% Current Overload

5 5 n/a minutes

Regulation Voltage:

Sealed PWM 14.1 14.1 28.2 V

Flooded PWM 14.4 14.4 28.8 V

LVD

11.7 11.7 23.4 V

LVD Reconnect

12.8 12.8 25.6 V

Temp Compensation

–27 –27 –54 mV/°C

Self-consumption

8 8 9 mA

Ambient Temp Range

–40 to 60 –40 to 60 –40 to 60 °C

SPECIFICATION SUMMARY

SL-10 SL-20 24 Volt

CONTENTS

1.0 G

ENERAL

NFORMATION

................................................ 1

2.0 I

MPORTANT

AFETY

NSTRUCTIONS

.................................. 2

3.0 Q

UICK

TART

NSTRUCTIONS

.......................................... 2

4.0 L

IGHTING

ONTROL

PTIONS

........................................ 3

5.0 LED I

NDICATORS

................................................................ 4

6.0 I

NSTALLATION

NSTRUCTIONS

.............................................. 4

6.1 Ratings and Limits ................................................ 4

6.2 Polarity Protection ................................................ 5

6.3 Brownout Protection ............................................ 5

6.4 Installation Procedure .......................................... 5

7.0 O

PERATION

.................................................................. 8

7.1 Select Lighting Control Option ............................ 8

7.2 Test Button............................................................ 8

7.3 Operator Tasks...................................................... 9

7.4 Operation and Functions...................................... 9

7.5 Inspection and Maintenance ................................12

8.0 T

ESTING AND

ROUBLESHOOTING

..................................12

8.1 Testing with a Power Supply ................................12

8.2 Troubleshooting....................................................13

1.0 GENERAL INFORMATION

Thank you for selecting the SunLight™ solar lighting controller.

The SunLight is an advanced design using a microcontroller for

digital accuracy and fully automatic operation. The PWM bat-

tery charging has been optimized for longer battery life.

Many specifications of the SunLight are unique. Although the

SunLight is very simple to use, please take the time to read this

operator’s manual and become familiar with the controller. This

will help you to make full use of the many advantages the

SunLight can provide to your solar lighting system.

2.0 IMPORTANT SAFETY INSTRUCTIONS

•SAVE THESE INSTRUCTIONS—This manual contains important

instructions that should be followed during installation and main-

tenance of the SunLight controller.

• WARNING—Be very careful when working with batteries. Lead

acid batteries can generate explosive gases, and short circuits

can draw thousands of amps from the battery. Read all instruc-

tions provided with the battery.

• Do not exceed the voltage or current ratings of the controller.

Use only with a 12 volt or 24 volt battery.

•

DO NOT

short circuit the PV array or load while connected to

the controller. This will

DAMAGE

the controller.

• The controller should be protected from direct sunlight. Ensure

adequate space for air flow around the controller.

• Pressure terminal connectors are not required. Use only copper

wire with minimum 75˚C insulation rating and between 10 AWG

(5.2 mm

) and 14 AWG (2.1 mm

) gage.

• The negative system conductor should be properly grounded.

Grounding should comply with local codes.

3.0 QUICK START INSTRUCTIONS

This section provides a brief overview of how to get started using

the SunLight controller. However, please review the entire manual

to ensure best performance and years of trouble-free service.

1. Mount the SunLight to a vertical surface. Allow space above and

below the controller for air flow.

2. Make sure the PV and load currents will not exceed the ratings

of the SunLight model being installed.

3. The 6 system connections to the SunLight terminals

are numbered on the label. It is recommended that the

connections be made in order from 1 to 6.

4. Connect the

BATTERY

first. Use care that bare wires do not

touch the metal case of the controller.

5. Connect the

SOLAR

(PV array) next. The green LED indicator will

light if sunlight is present.

6. Connect the

LIGHT

last. If the red LED indicator lights, the bat-

tery capacity is low and should be charged before completing

the system installation (Refer to Section 6.4).

7. The controller is shipped with a terminal jumper installed. This

sets the controller for charging

SEALED

batteries.

If a

FLOODED

battery is being used, simply remove the jumper

to optimize the battery charging for a flooded battery. If the

jumper is connected again, the charging will return to the set-

points for a sealed battery (Refer to Section 6.4.)

8. For most effective surge protection, it is recommended that the

negative system conductor be properly grounded.

9. Turn the rotary

LIGHTING CONTROL

switch to the lighting

option desired (Refer to Section 7.1).

10. Press the

TEST

button and count the number of Red LED flashes

to verify the correct lighting control setting (Refer to Section 7.2).

4.0 LIGHTING CONTROL OPTIONS

SOLAR LIGHTING CONTROLLER

+–

BATTERYSOLAR

+–+–

3 2 1 6 5

12 Volts

10A Solar

10A Light

LOW VOLTAGE

DISCONNECT

TEMP. SENSE

MORNINGSTAR

MADE IN USA

SEALED

FLOODED

SELECT

LIGHT

TEST

LIGHTING CONTROL

CHARGING

OFF

3/1

4/2

6/2

D/D

12 V

• OFF

• 2 HOURS ON

• 4 HOURS ON

• 6 HOURS ON

• 8 HOURS ON

• 10 HOURS ON

• 3 / OFF / 1

• 4 / OFF / 2

• 6 / OFF / 2

• DUSK-to-DAWN

SUNSET NIGHT SUNRISE

5.0 LED INDICATORS

REEN

LED:

The green LED indicator will light whenever sunlight is avail-

able for battery charging. The green LED will turn off at night.

Because the SunLight uses a PWM constant voltage charging

process, there is usually some amount of energy going into the

battery at all times. Although the charging current falls to very

low levels when the battery reaches full charge, the green LED

will continue to stay ON all day. This is to indicate that the

controller is working and that energy is available from the PV

array for charging.

LED:

The red LED is an indicator for 3 different functions:

• Automatic low voltage load disconnect (LVD)

If the battery charge state falls below the LVD setpoint, the light

will be disconnected and the red LED will light. This indicates the

controller has disconnected the load to protect the battery from

further discharge and possible damage. The red LED will turn off

when the battery recovers to about 50% of its rated capacity and

the load is automatically reconnected.

• Initial controller start-up

When the SunLight is properly connected to the battery, the red

LED will flash 3 times.

• Confirm lighting control selection

When the TEST button is pressed, the red LED will confirm the

lighting control option selected by the rotary switch (Refer to

Section 7.2).

6.0 INSTALLATION INSTRUCTIONS

6.1 R

ATINGS AND

IMITS

•The SunLight is rated for 12 volt (or 24 volt) PV systems. Do not

connect to a PV array with open circuit voltage (Voc) greater than

30 volts (or 50 volts).

• Maximum array short circuit current rating is 12.5 amps and

25 amps.

•Because the SunLight is a series controller, the PV current rating

is specified at the PV array’s peak power (Ipp). The SunLight does

NOT short the PV array for regulation, and it is not necessary to

derate the controller for short-circuit current (Isc) as is commonly

done with shunt controllers.

• The rated PV input current and the rated load current can both

be exceeded by 25% for up to 5 minutes. This 25% overload will

reduce the safety margins for surges and will cause heating that

can shorten the life of the controller.

For the reasons noted above, these higher overload ratings

should

NOT

be used for routine operation. They are only to note

overload capability for system design purposes.

• The SunLight is designed to operate continuously in 60°C ambi-

ent temperatures. However, do not install the controller near heat

generating sources or in direct sun. This could cause the temper-

ature rating to be exceeded and damage the controller.

• The date of manufacture can be found on the serial number

(bottom of case). The first 4 digits are the year and week.

6.2 P

OLARITY

ROTECTION

The SunLight is generally protected from reversed connections,

but the system operator and other equipment will be at risk

when polarities (+ and –) are reversed. Carefully check before

making each connection to be certain the polarity is correct.

6.3 B

ROWNOUT

ROTECTION

If battery voltage sags below 8 volts for any reason (such as

pressing TEST in LVD with a weak battery), the microcontroller

may reset. This is to prevent a low voltage condition from

causing the microcontroller to lock-up at an unattended site.

Note that a brownout reset will begin a new start-up sequence

for measuring night length (Refer to Section 7.4).

6.4 I

NSTALLATION

ROCEDURE

OTES

• The SunLight prevents reverse current leakage at night, so a

blocking diode is not required in the system.

• The connector terminals will accept a maximum wire size of

AWG #10 (up to 5.2 mm

). A flathead screwdriver is required.

(Some #10 spade connectors may not fit in this terminal.)

• Tighten each terminal clamping screw to 20 inch-pounds of

torque.

• The SunLight is designed to regulate power from a PV array.

Other generators can be connected directly to the battery,

however, with no effect on the SunLight.

• Do not connect any system wires (Solar, Battery, Light) to the

SEALED OR FLOODED SELECT

terminal.

Refer to the connection diagram on page 3 to illustrate each of the

following installation steps.

1. Inspect the controller for shipping damage. If possible, mount

the SunLight to a vertical surface.

Allow a minimum of 5 cm (2 inches) space above and below the

controller for air flow. Protect the controller from direct sunlight

or other heat sources.

The SunLight can be mounted outdoors. Avoid mounting in

direct rain such that water could collect under the cover. If

installed in an enclosure, some ventilation is recommended to

minimize operating temperatures.

OTE

The SunLight is very corrosion resistant. The case is

hard coat anodized, cover screws are stainless steel,

the circuit is encapsulated, and the terminals are

copper and nickel plated brass.

2. Confirm that the Solar array and loads will not exceed the

current ratings of the Sunlight controller being installed.

OTE

A SunSaver can be connected in parallel with a

SunLight for additional amps of solar charging. Make

sure each controller’s input rating is not exceeded.

The lighting load can only be connected to the

SunLight and cannot exceed the load rating.

CONNECTION ORDER

The label has each system connection

numbered from 1 to 6. This is the recommended order of system

connections. The

BATTERY

must be connected before the

SOLAR

to properly start the microcontroller.

BATTERY

Connect the 12-volt (or 24V) system battery. The

green LED will not light. If the red LED (LOAD DISCONNECT)

lights and stays lit, the battery charge state is low and should be

recharged before completing the installation.

OTE

If the battery voltage is below 11.7 (or 23.4) volts,

the load has been automatically disconnected due to

a very low battery charge condition, and the battery

must be recharged.

OTE

A battery below 10 volts may not start the microcon-

troller properly. Make sure the battery is charged

before installing the system.

SOLAR

First, be certain the battery (+ and –) is connected

correctly. Then connect the solar array to the

SOLAR

terminals.

(Be

CERTAIN

that the PV + and – wires are connected correctly).

The green LED will light if the array is connected during the

daytime and the array is wired correctly.

OTE

If the SOLAR is disconnected during installation,

the controller will see this as the first night and the

length of night will be too short. This will only affect

ON/OFF/ON settings, and will automatically be cor-

rected over 4 days. If the PV array is disconnected, it

is best to disconnect the battery and restart the

microcontroller before leaving the site.

AUTION

Remember that the Solar array will generate power

whenever in sunlight. Also, be careful not to short-

circuit the PV array while connected to the con-

troller, since this will damage the controller.

LIGHT

Connect the light to the

LIGHT

terminals. Turn the light

on with the

TEST

button (Refer to Section 7.2).

If the load causes the red LED to turn on soon after the light was

activated, the battery must be recharged.

SEALED OR FLOODED SELECT

The SunLight is shipped with

a jumper installed between the

LIGHT

-negative terminal (connec-

tion 5) and the

SEALED OR FLOODED SELECT

terminal. With

this jumper installed, the SunLight is configured for charging

SEALED

batteries.

If your PV system has a

FLOODED

battery, simply remove the

jumper to change the SunLight to a flooded battery charger.

The SunLight can be changed between SEALED and FLOODED

as many times as you wish by using the jumper. Save the jumper

for future use in case your battery type is changed. If the jumper

is lost, a wire can also be used.

8. For safety and the most effective lightning protection, the nega-

tive conductor of the battery should be properly grounded. The

SunLight connects the PV-negative, Battery-negative and Load-

negative internally per UL recommendations. No switching is

done in the negative current path.

7.0 OPERATION

7.1 S

ELECT

IGHTING

ONTROL

PTION

After completing the system connections, select the desired

LIGHTING CONTROL option. Refer to Section 4.0 for a sum-

mary of the SunLight’s ten standard options for lighting control.

A brief description follows below:

OFF Lights remain turned off

2,4,6,8,10 Hours light is turned on after sundown

3/1, 4/2, 6/2

Light is turned on after sundown, turned off

during the night, and turned on again one hour

(3/1) or two hours (4/2, 6/2) before sunrise

D/D Dusk-to-Dawn, light is on all night

To select a lighting option, turn the rotary digital switch to the

desired position. An arrow in the rotary switch will point to the

selected position. This is a digital switch, so it will click into

each of the ten positions.

To confirm correct selection of the desired control option, press

the TEST button located below the rotary switch (see Section

7.2 below).

7.2 T

EST

UTTON

Press the TEST button until a distinct click is heard and felt.

This button performs two functions:

a. Confirm rotary switch selection

To verify that the rotary digital switch is set at the desired position,

press the TEST button. The red LED will flash once per second.

Count these LED flashes to confirm the correct switch setting.

Each of the 10 LIGHTING CONTROL positions has a unique

number of flashes. These are as follows:

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