54
Cod.: 240.010.0042
DLS / DLS-C Series
5.2.1 Connection of independent PV strings to PV1 and PV2 inputs
Refer to the connection diagram shown in Figure 09_A and Figure 10_A if the system is based on two
independent PV strings.
The voltage applied to each input channel of the DLS, determined at the minimum rated temperature for
operation, must NEVER exceed 600V. Exceeding the limit can cause serious damage to the DLS.
5.2.2 Connection of a single PV string to the PV1 or PV2 input
Refer to the connection diagram shown in Figure 09_B and Figure 10_B if the system is based on a single
PV string connected to a single PV1 or PV2 input.
The voltage applied to each input channel of the DLS, determined at the minimum rated temperature for
operation, must NEVER exceed 600V. Exceeding the limit can cause serious damage to the DLS.
WARNING: To avoid incorrect evaluation of the electrical insulation parameters of the panels, it is necessary
to short-circuit the unused input by connecting a cable between the + and – connectors.
5.2.3 Connection of a single PV string to paralleled PV1 and PV2 inputs
Refer to the connection diagram shown in Figure 09_C and Figure 10_C if the system is based on a single
PV string connected to both inputs PV1 and PV2.
The voltage applied to each input channel of the DLS, determined at the minimum rated temperature for
operation, must NEVER exceed 600V. Exceeding the limit can cause serious damage to the DLS.
WARNING: The default factory setting of the DLS is set for operation with independent PV1 and
PV2 inputs. To obtain the correct operation of the DLS inverter with the PV1 and PV2 inputs congured in
parallel, it is necessary to access the "SETTINGS" conguration menu in INSTALLER mode, access the
"SYSTEM" menu and set the MPPT parameter in "PARALLEL" mode in the "MPPT CONF" menu. Refer to
the SYSTEM PROGRAMMING section.
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