SFC Energy EFOY Pro Series Hints & Tips

Hints for external control of EFOY Pro fuel cell

The EFOY Pro fuel cell is capable to receive commands from an external controller. To use this
functionality you can send serial commands or use switching contacts of "Data Interface". To use external
control functionality, EFOY Pro offers three possibilities:

1) Button commands via serial communication

Via serial communication (RS-232) the same commands triggered by the buttons of EFOY Pro's remote
control can be sent to the fuel cell. Three commands „Button On", „Button Off" and „Button Auto" cover
this functionality. The fuel cell reacts the same way as if these buttons are used on EFOY Pro's remote
control. Details for setting up serial communication are described in the manual for Interface Adapter.
2) „Remote On" Signal
If EFOY Pro receives „Remote On" signal by switching contacts of serial communication it starts the
charging cycle until switch off voltage is reached. In the display of the remote control you can see „R" in the
first line on the right as long as "Remote On" Signal is active. Is „Remote On" Signal still active after a
complete charging cycle, another charging cycle will start. Therefore we recommend to reset „Remote On"
signal after charging cycle has started.

Switching contacts on data interface:

1 1 1 1
SFC Energy AG
Pin Pin Pin Pin
1 DuoCartSwitch
2 RxD (Data)
3 TxD (Data)
4 GND, Ground
8 8 8 8
5 Battery +
6 Fuel Cartridge Sensor
7 Remote On Remote On Remote On Remote On
8 Hybrid Hybrid
Hybrid Hybrid
Hints for external control of EFOY Pro fuel cell
Function Function Function Function
19.04.11, KS