18 | SAMLEX AMERICA INC.
SECTION 5 |
Protections & Troubleshooting
5.1 PROTECTIONS
5.1.1 Over Current of Solar Panel / Array
If the output current of the solar panel / array exceeds 20A rating of the controller, the charging
current will be limited to the rated current of 20A.
5.1.2 Short Circuit of Solar Panel / Array
If solar panel / array is short circuited, remove the short circuit to resume normal operation
automatically. The controller will not be damaged due to short circuit on the solar panel input side.
5.1.3 Reverse Polarity of Solar Panel / Array Input Connection
Fully protected against reverse polarity connection of solar panel / array. Solar Panel Status LED
(
1, Fig 2.1
) will fast blink Green @ 4Hz. The controller will not be damaged. Correct the polarity of
connection 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 20A, Load Status LED (
3, Fig 2.1
) will be steady RED.
When the load rises to ≥ 1.05 times (
20.0A
) 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 ≥ 21.0A 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 ≥ 21.0A 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 ≥ 21.0A 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 ≥ 21.0A 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 ≥ 21.0A 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 ≥ 40A 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.
Содержание MSK-20A
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