Apollo Solar GEM - Page 44

Page 44
Apollo GEM Unit Modes
Up to two Apollo GEM units can be used in the same system. For a two unit installation each controller is
designated to be a primary or secondary unit using the unit mode parameter in the installer menu.
Examples are shown below.
Apollo GEM Installation Manual
Apollo GEM
Power
Sensor
Single Unit Mode – 1 power sensor and 1 Apollo GEM controller
Primary/Secondary Mode – 2 power sensors and 2 Apollo GEM controllers.
Primary takes priority.
Note for wireless systems only one power sensor and transmitter is required.
Load Share Mode
–
2 power sensors a
nd 2
Apollo GEM
controllers.
Both controllers share PV Power.
Note
for wireless systems only one power sensor and transmitter is required.
Apollo GEM
Power
Sensor
Apollo GEM
Power
Sensor
Apollo GEM
Power
Sensor
Apollo GEM
Power
Sensor
GEM Controller
[SINGLE UNIT]
GEM Controller
[PRIMARY]
GEM Controller
[SECONDARY]
GEM Controller
[LOAD SHARE]
GEM Controller
[LOAD SHARE]