Hints for external control of EFOY Pro fuel cell
SFC Energy AG
Eugen-Saenger-Ring 7
85649 Brunnthal
Germany
Hotline: +49 89 673 592 – 555
EFOY
®
is a registered trademark of SFC Energy AG
Subject to modifications and errors
Valid from: May, 13
th
2019
Document revision: Rev 03
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“ or “RC” 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.
INFO: During operation mode „manual off“ the EFOY Pro will directly shut down, when the „Remote On“ signal is not
active anymore. If the EFOY Pro should perform a charging cycle, it has to be in „Automatic“ mode.
Switching contacts on data interface:
Pin
Function
1 DuoCartSwitch
2 RxD (Data)
3 TxD (Data)
4 GND, Ground
5 B
6 Fuel Cartridge Sensor
7 Remote On
8 Hybrid
1
8
