Sun21 MAX-M2024, User Manual

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MAX-M2024/3024/4024:
System
voltage
36 cell
Voc
＜
23V
48 cell
Voc
＜
31V
54 cell
Voc
＜
34V
60 cell
Voc
＜
38V
Max. Best Max. Best Max. Best Max. Best
12V 4 2 2 1 2 1 2 1
24V 4 3 2 2 2 2 2 2
System
voltage
72 cell Voc
＜
46V 96 cell Voc
＜
62V
Thin-Film
Module
Voc
＞
80V
Max. Best Max. Best
12V 2 1 1 1 1
24V 2 1 1 1 1
NOTE : The above parameter values are calculated under standard test conditions
(STC (Standard Test Condition)
：
Irradiance 1000W/m
2
，
Module Temperature 25
℃
，
Air Mass1.5.)
(2) Maximum PV array power
The MPPT controller has the function of current/power-limiting, that is, during the
charging process, when the charging current or power exceeds the rated charging
current or power, the controller will automatically limit the charging current or power to
the rated charging current or power, which can effectively protect the charging parts of
controller, and prevent damages to the controller due to the connection of some over-
specification PV modules. The actual operation of PV array is as follows:
Condition 1:
Actual charging power of PV array
≤ Rated charging power of controller
Condition 2:
Actual charging current of PV array
≤ Rated charging current of controller
When the controller operates under
“
Condition 1
”or“
Condition 2
”, it will carry out the
charging as per the actual current or power; at this time, the controller can work at the
maximum power point of PV array.
WARNING: When the power of PV is not greater than the rated charging
power, but the maximum open-circuit voltage of PV array is more than
50(MAX12**)/96V(MAX24**) (at the lowest environmental temperature),
the controller may be damaged.
Condition 3:
Actual charging power of PV array
＞
Rated charging power of controller
Condition 4:
Actual charging current of PV array
＞
Rated charging current of controller
When the controller operates under
“
Condition 3
”or“
Condition 4
”
，
it will carry out the
charging as per the rated current or power.
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