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A P P E N D I C E S
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M O R N I N G S T A R C O R P O R A T I O N
Appendices
Appendix 3 - LED Indications
LED Display Explanation:
G = green LED is lit
Y = yellow LED is lit
R = red LED is lit
G/Y = Green and Yellow are both lit at the same time
G/Y - R = Green & Yellow both lit, then Red is lit alone
Sequencing (faults) has the LED pattern repeating until the fault is cleared
1. General Transitions:
• Controller start-up
G - Y - R (one cycle)
• Push-button equalize start
G/Y/R - G/Y/R - G (one cycle)
• Push-button equalize stop
G/Y/R - G/Y/R - R (one cycle)
• Battery service is required
all 3 LEDs blinking until service is reset
2. Battery Status
• General state-of-charge
see battery SOC indications below
• PWM absorption
G blinking (1/2 second on / 1/2 second off)
• Equalization state
G fast blink (2 to 3 times per second)
• Float state
G slow blink (1 second on / 1 second off)
Battery State-of-Charge LED Indications
(when battery is charging):
• G on
80% to 95% SOC
• G/Y on
60% to 80% SOC
• Y on
35% to 60% SOC
• Y/R on
0% to 35% SOC
• R on
battery is discharging
LOAD CONTROL
2. Load Status
12V
24V
48V
LVD+ 0.60V 1.20V 2.40V
LVD+ 0.45V 0.90V 1.80V
LVD+ 0.30V 0.60V 1.20V
LVD+ 0.15V 0.30V 0.60V
LVD
The load status LEDs are determined by the LVD voltage plus the
specified transition voltages. As the battery voltage rises or falls,
each voltage transition will cause a change in the LEDs.
G
G/Y
Y
Y/R
R-Blinking
R-LVD
3. Faults & Alarms
• Short circuit - solar/load
R/G - Y sequencing
• Overload - solar/load
R/Y - G sequencing
• Over-temperature
R - Y sequencing
• High voltage disconnect
R - G sequencing
• Reverse polarity - battery
no LEDs are lighted
• Reverse polarity - solar
No fault indication
• DIP switch fault
R - Y - G sequencing
• Self-test faults
R - Y - G sequencing
• Temperature probe (RTS)
R/Y - G/Y sequencing
• Battery voltage sense
R/Y - G/Y sequencing
