Full Product Manual

www.ACOPower.com
4120
Valley Blvd Walnut, CA 91789, USA
[phone]
Wiring
Connect all components as shown in “Figure 1: Connections” in this
order:
1. Battery
2. Load
3. PV Array
() Always connect the battery first. The charge controller does not
come with independent power and will not power on without first being
supplied power from the battery. This also allows it to recognize the
system voltage for proper setup. When disconnecting the system, do
in reverse order.
() Pay close attention to the polarity “+” and “-“ of your connections.
Do not insert the fuse or turn on the breaker during installation.
() Connect the battery fuse as close to the battery as possible.
Recommended no more than 150mm from the battery terminal
Figure 1: Connections
() The VS AU series is a positive ground charge controller. Any
positive connection of solar or battery can be earth grounded.
Installation & Operation
Figure 2: Button functions
() When not operating the LCD interface, the controller will cycle
through the shown interfaces in Figure 4. These interfaces can be
cycled through manually by pressing the MENU button.
() Accumulative Power Zero Clearing: Under PV Power interface,
Press the SET button and hold for 5s until the value blinks. Press
SET again to clear the value:
() Setting temperature unit: Under battery temperature interface,
press SET button and hold for 5s to switch. Figure 3: Status Description
Fault Indications
() When load current reaches 1.02-1.05 times, 1.05-1.25 times, 1.25-1.35 times and 1.35
to 1.5 times more than normal value, the controller will automatically turn off loads in 50s,
30s, 10s, and 2s respectively
Note: A Remote Temperature Sensor (RTS) is an optional accessory. The charge controller
will not track battery temperature without an RTS. Controller shows fixed 25 C with no RTS.
Figure 4: LCD Interface
Power Your Green Life!
Item
Icon
Status
PV
array
Day
Night
No charging
Charging
PV Voltage,
Current ,Power
Battery
Battery capacity, In
Charging
Battery voltage.
current,
temperature
Battery type
Load
Load ON
Load OFF
Load Voltage,
Current, Load
mode
Button
Function
MENU
button
 Browse interface
 Setting parameter
SET
button
 Load ON/OFF
 Clear error
 Enter into Set Mode
 Save data
Status
Icon
Description
Battery over
discharged
Battery level shows empty, battery
frame blink, fault icon blink
Battery over voltage
Battery level shows full, battery
frame blink, fault icon blink