Final Assembly; Communication Connection; Dry Contact Signal - INFOSEC C3 MPPT User Manual

input connector. Connect the negative pole (-) of the connection cable to the negative pole (-) of
the photovoltaic input connector.
Diagram 11: connecting the photovoltaic modules to C3 MPPT / C3+MPPT
3. Make sure the wires are securely connected.

2-7. Final Assembly

After connecting all wirings, put the bottom cover back by screwing two screws as shown below.
C3 MPPT 1KVA C3+ MPPT 2KVA / 3KVA
C3+ MPPT 4KVA / 5KVA
Diagram 12: Closing the bottom panel of C3 MPPT / C3+MPPT

2-8. Communication Connection

Use the supplied communication cable to connect C3 MPPT / C3+ MPPT to a computer. Insert the CD
into the computer and follow the instruction to install the monitoring software. For the detailed software
operation, please check the user's manual of the software inside the CD box.

2-9. Dry Contact Signal

There is one dry contact (3A/250VAC) available on the rear panel. It can be used to deliver a signal to
an external device when the battery voltage reaches the warning level.
C3 MPPT
Condition
Status
Dry contact port:
NC & C NO & C
Power Off Unit is off and no output is powered. Close Open
12
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