20 | SAMLEX AMERICA INC.
SAMLEX AMERICA INC. | 21
SECTION 5 |
Protections & Troubleshooting
5.1 PROTECTIONS
5.1.1 Over Current from the Solar Panel Output
If the output current from the Solar Panel exceeds 10A rating of the controller, the charging cur-
rent will be limited to the rated current of 10A.
5.1.2 Short Circuit Across Solar Panel Input Terminals
If a short circuit occurs across Solar Panel Input Terminals (5A and 5B in Fig 2.1), the Controller will
not be damaged. LED marked "Solar Panel / Array Status" (1, Fig 2.1) will be off. Remove the short
circuit to resume normal operation.
5.1.3 Reverse Polarity of Solar Panel Input Connection
Fully protected against reverse polarity connection of Solar Pane. Solar Panel Status LED (
1, Fig 2.1
)
will fast blink Green @ 4Hz. The controller will not be damaged. Correct the polarity of the con-
nection to resume normal operation.
5.1.4 Overload in the Load(s) Connected to Load Terminals
When the load is within the rated current of 10A, Load Status LED (
3, Fig 2.1
) will be steady RED.
When the load rises to ≥ 1.05 times (
10.5A
) for around 3 sec, overload protection is activated
as follows:
1. Load will be disconnected for 5 sec – Load Status LED (
3, Fig 2.1
) will slow blink
5 times @ 1Hz
2. Load will be reconnected – Load Status LED (
3, Fig 2.1
) will be steady
3. If overload ≥ 10.5A continues for 3 sec, the load will be disconnected for 10 sec and the
Load Status LED (
3, Fig 2.1
) will blink 10 times @ 1Hz
4. Load will be reconnected – Load Status LED (
3, Fig 2.1
) will be steady
5. If overload ≥ 10.5A continues for 3 sec, the load will be disconnected for 15 sec and the
Load Status LED (
3, Fig 2.1
) will slow blink 15 times @ 1Hz
6. Load will be reconnected – Load Status LED (
3, Fig 2.1
) will be steady
7. If overload ≥ 10.5A continues for 3 sec, the load will be disconnected for 20 sec and the
Load Status LED (
3, Fig 2.1
) will blink 20 times @ 1Hz
8. Load will be reconnected – Load Status LED (
3, Fig 2.1
) will be steady
9. If overload ≥ 10.5A continues for 3 sec, the load will be disconnected for 25 sec
10. Load will be reconnected – Load Status LED (
3, Fig 2.1
) will be steady
11. If overload ≥ 10.5A continues for 3 sec,
the load will be disconnected permanently
and the Load Status LED (3, Fig 2.1) will slow blink continuously @ 1Hz
• To reset, remove overload and press the Load On/Off Button (
4, Fig 2.1
) for around 8 sec
5.1.5 Load Short Circuit
Short circuit condition is detected if the output current is ≥ 2 times (20A) momentarily. The pro-
tection is activated and reset as follows:
1. If load current ≥ 20A is detected momentarily, the load will be disconnected immediately
and the Red Load Status LED (
3, Fig 2.1
) will fast blink @ 4Hz for 5 sec
2. After 5 sec, the load will be reconnected. If short circuit condition continues, the load will
be disconnected immediately and the Red Load Status LED (
3, Fig 2.1
) will continue to fast
blink @ 4Hz for 10 sec.
3. After 10 sec., the load will be reconnected. If the short circuit condition continues, the
load will be disconnected immediately and the Red Load Status LED (
3, Fig 2.1
) will
continue to fast blink @ 4Hz for 15 sec.
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