WESTECH VS Series - Operation and Displaying of Controller

15
Fault LED indicator Table 4-2
Color
Indicator
Charging Status
Red
Flashing
PV：OverCurrent、Measure Err、 MOS-I
Short、MOS-C Short、 MOS Break
BATT：OVD、Error、OverTemp
LOAD：Overload、Short、
MOS Short、Error
DEVICE：OverTemp
4.4 Operation and Displaying of Controller
 Load work mode
1. Dusk to Dawn
When solar module voltage goes below the point of NTTV (Night Time Threshold
Voltage) at sunset, the controller will recognize the starting voltage and turn on the load
after configurable delay time. When solar module voltage goes above point of DTTV
(Day Time Threshold Voltage), the solar controller will recognize the starting voltage and
turn off the load after configurable delay time.
2. Light ON + Timer
When solar module voltage goes below the point of NTTV (Night Time Threshold
Voltage) at sunset; the solar controller will recognize the starting voltage and turn on the
load after configurable delay time. The load will be on for several hours which users set.
3. Timer
The mode includes single and double time intervals. Set the starting and ending time for
each time interval and controller works according to the set time interval.
4. Manual mode
This mode is to turn ON and OFF the load by manual.