The programmable relay offers three connections:
• NO (Normally Open)
• C (Common)
• NC (Normally Closed)
Relay State Connection
between
Switched
ON
C and NO
Switched
OFF
C and NC
Relay
C
NC
NO
Internal operation of the programmable relay
Relay mode Description and notes
Relay always off This option switches the relay OFF. It will disable the other relay options. Use this option if you do not
plan to use the relay function.
Panel voltage
high
This option switches the relay ON when the panel voltage becomes too high.
Panel voltage High settings Panel high voltage. (User-defined Voltage) Clear panel high voltage.
(User-defined Voltage) This option switches the relay ON when the panel voltage rises above the
chosen “Panel high voltage” setting, and switches the relay OFF when the panel voltage falls below
the chosen “Clear panel high voltage” setting. Ensure, of course, that the “Panel high voltage” setting
is greater than the “Clear panel high voltage” setting. These settings must never exceed the maximum
voltage-rating allowed by your MPPT charger.
High temperature
(Dimming)
This option switches the relay ON when the charger output current is reduced due to high
temperatures. Use this option to for example switch an external fan.
MPPT solar charger manual
Page 25 Configuration and settings
To Next Page
Loading...
Need help?
General
