Upne-Tech SLAC-SL User manual

1
SLAC-SL Solar street light controller
User Manual
Thank you very much for choosing our product.
This product manual provides important information and advices for
product installation, use and troubleshooting. Before using this product,
please read carefully and thoroughly.
SLAC-SL is specially designed for solar street light with high
performance. It has a number of outstanding features:
The controller adjusts itself automatically to 12V or 24V system voltage.
Sophisticated programmable nightlight function.
Clear readable LED display of the state of charge.
4 stage charging(Main,boost, equalization, float) for flooded battery, 3
stage charging(boost, float) for sealed battery.
Enclosed by aluminum shell and potted by epoxy with high thermal
conductivity. Protection grade reaches IP67.
Safety recommendations
Recommend a wire diameter: SLAC - SL10A: 1.5 mm²; SLAC -
SL20A: 2.5 mm ²，ensure the battery and the controller between the
cable length as short as possible, to prevent controller misjudge battery
voltage.
Connect the controller by following steps to avoid installation faults.
1. Connect the wire to the controller, then to the battery.
2. Connect the wire to the controller, then to the photovoltaic modules.
3. Connect the wire to the load, then to the controller.
（3） （1） （2）
Starting up the controller:
Self Test
As soon as the controller is supplied with power either from the battery or
the solar array, it starts a self test routine. Then the display changes to
normal operation.
System Voltage
The controller adjusts itself automatically to 12V or 24 V system
voltages. As soon as the voltage at the time of start-up exceeds 20.0V,
the controller assumes a 24V system. If the battery voltage is not
within the normal operation range at start-up, a status display according
to the section ERROR DESCRIPTION occurs.
LED Status and Display
SLAC-SL Controller has five LEDs. One green LED is for charge
display, three yellow LEDs are for the state of charge display, and one
red LED is for the status of load display.
Normal operation Description
LED
Status
Function
Green
LED
On
Main charge during daytime
Slow flash
Float charge
Fast flash
Equalization charge
Off
Controller connected to battery, night
detected.
Yellow
LED
Yellow LED 1(L) on
Battery power low
Yellow LED 2(M) on
Battery power medium
Yellow LED 3(H) on Battery power high
Red
LED
Off Normal operation
Flash Overload or Short-circuit of load
Error Description
Loads are not
supplied.
Indication Cause Corrective action
Battery is low
（Red LED on）
Load will reconnect as
soon as battery is
recharged
Over current /
Short circuit of
loads（Red LED
flashing）
Switch off all loads.
Remove short circuit.
Controller will switch on
load automatically after
max 1 minute.
Battery voltage
too high
(>15.5 / 31.0 V)
Check if other sources
overcharge the battery. If
not, controller is damaged
Battery wires or
battery fuse
damaged, battery
has high
resistance
Check battery wires, fuses
and battery. Remove
faults.
Battery is low
after short
time.
Battery has low
capacity（Red
LED on）
Replace the battery.
Battery is not
being charged
during
daytime.
Solar array faulty
or wrong polarity
（Green LED
off）
Check solar array and
wiring. Remove faults.
Nightlight Function
The controller comes with a sophisticated nightlight function. It controls
the load output at night and is widely programmable. Two modes are
available: Dusk to Dawn and Evening timing.
The mode can be selected in Programming Main Menu 1. If Evening
timing mode is selected. Programming Menu 2 allows choosing the
Evening timing hours.
The controller recognizes day and night based on the solar array open
circuit voltage (Factory setting is 5.0V for 12V system, 10.0V for 24V
system). In Programming Main Menu 3 this day/night threshold can be
modified according to the requirements of the local conditions and the
solar array used.
To find the right value, we recommend measuring the solar array open
circuit voltage at the time when twilight has reached the level when the
controller should switch on/off. This value can then be set according to the
description in the programming section.
Mind that the load output is switched off as soon as the battery has
reached the Low Voltage Disconnect threshold, the Low Voltage
Disconnect had priority above the nightlight function.
Both state changes require several minutes of continuous transition values
before making the change. These restrictions avoid false transitions due to
dark storm clouds or lightning.
Light on Light off
Evening timing
Hours after dusk
Dust to Dawn
Light on
Light off

2
You can enter the programming mode with 2 seconds push on the button.
The programming menu structure is described on the follow page. Mind
that once you have entered the programming menu you can exit it at the
last item only. All programming settings are stored in a non-volatile
memory and remain stored even if the controller was disconnected from
the battery.
Programming your Solar Controller
The button switch has three push modes:
1）Short push Shorter than 1 seconds
2）Long push 2 to 8 seconds
3）Lock push 8 seconds or longer
By pushing the button for 8 sec in normal operation mode the
programming lock-out is activated to prevent any accidental settings
change. Another 8 sec push releases the lock-out.
With a long push, you can enter the programming mode. The
programming menu structure is described in the back page. A wide arrow
means a long push (2s-8s), a narrow dotted line arrow means a short push
(<1sec).
Testing Function
During the daytime the testing function of SLAC-SL can help the user to
verify correct installation or for troubleshooting a system problem. Short
pushing the button will light up the lamp which is connected to the load
terminals. The lights will be on in the day for 3 minutes intervals. Within
3 minutes the lights can be turned off via pushing button. The lights can
turned on repeatedly with pushing button besides when the system is in
LVD (load disconnect/red LED on). In LVD this testing function is not
valid. If pressing the button cause a load disconnects (LVD) the light will
turn off.
Safety Features
PV terminals
Battery terminals
Load
terminals
Reverse
polarity
24V system: no
12V system: yes
Protected
Protected
Short circuit
Protected
Protected (with fuse
on battery) (3)
Protected
Over current
Protected
Protected
Switches off
with
a delay (3)
Reverse
charge
Protected
No effect
No effect
Over voltage
Max. 55V
Max. 55V
Switches off
with a
delay
Under voltage
No effect
No effect
Switches off
above
15.5/31.0 V
Over
temperature
When over temperature occurs, the controller will
reduce the charging current. If the temperature of
controller reaches a high level, the load will
automatically be switched off.
(1) Controller can protect itself, but load might be damaged.
(2) We strongly recommend that add a fuse between battery and controller.
The battery may be permanent damaged when short circuit occurs.
(3) > 200% rated current: Load will be switched off with 3s delay.
Warning: Two or more error conditions at the same time may cause
damage to the controller. Always remove the present fault condition
before next operation
SLAC-SL Technical Characteristics
Model SLAC-SL
5A 10A 20A
Max. charge/load current 5A 10A 20A
Rated System voltage 12V/24V auto recognition
Main charge 14.4V/28.8 V (25 °C), 30 min. (daily)
Boost charge 14.4/28.8 V (25 °C), 2 h Activation:
battery voltage < 12.3/24.6 V
Equalization voltage 14.8/29.6V(25 °C)
Float charge 13.8/27.6 V (25 °C)
Deep discharge protection,
Cut-off voltage 11 – 12 V/22 – 24 V
Reconnect level 12.8/25.6V
Under voltage protection 10.8/21.6V
Overvoltage protection 15.5/31.0 V
Self consumption 4mA-5mA（12V）
6mA-8mA（24V）
Max. panel voltage 50V
Temperature compensation -4mV/Cell*K
Grounding Positive grounding
Battery type Lead acid (GEL, AGM, flooded)
Evenin
g
hours 0 – 12 h
Ambient tem
p
erature -40°C-+60°C
Dimensions 50mm*56.6mm*20mm
Wire Length/size 150mm/2.5m²
Ambient temperature -40°C-+60°C
IP grade IP67
Max. altitude 4000m
Weight 130g
Subject to change without notice.
Version: 20140530
www.upnetech.com

Yellow
LED1
Yellow
LED2
Yellow
LED3
Button
Enter
Programming
Main Menu
with long push 2 sec
（Green LED slow flash）
Display Menu（Green
LED Flash）
Programming Menu(LED
Fast Flash)
Long
Push
> 2 Second Short Push
<
1 Second
LED
Slow
Flash
Main Menu 1
(Nightlight Mode Selection)
Main Menu 2
(Evening Timing Hours)
Main Menu 3
(Day / Night Threshold)
Dusk to Dawn （factory setting）
Evening
timing
Nightli
ght
off
0h（
factory
setting
）
1h
2h
3h
4h
5h
6h
7h
8h
9h
10h
11
12h
1.5V/3.0V
2.0V/4.0V
2.5V/5.0V
3.0V/6.0V
3.5V/7.0V
4.0V/8.0V
4.5V/9.0V
5.5V/11.0
6.0V/12.0V
6.5V/13.0V
7.0V/14.0V
7.5V/15.0V
5.0V/10.0V
（
factory
setting
）
Green
LED
Exit Programming with short push < 1 sec
Short push < 1 sec
Short push < 1 sec
SLAC-SL Solar Street Light Controller Programming Manual
Red LED LED
off
LED on LED Fast
Flash
LED
Flash
Normal Operation
>