SMA eCharger - RS485 Interface; Multifunction Relay (MFR); Charging Release; Knock Sensor

4 Product overview
SMA Solar Technology AG
Operating manual EVC22-3AC-20-BE-en-10 27
• Direct connection via Wi-Fi⇒page67
4.5.10 RS485 interface
The product is equipped with an RS485 interface as standard. The product can communicate with
SMA communication products via the wired RS485 interface (information on supported
SMAproducts at www.SMA-Solar.com).
4.5.11 Multifunction relay (MFR)
The product is equipped with a multifunction relay (digital output) as standard. The multifunction
relay is an interface that can be used to control products via an external contactor or to activate
external indicator lights to indicate messages.
4.5.12 Charging release
To protect the charging station against unauthorized access, you can activate charging release.
Once activated, the charging station is locked and each charging process must be released via the
SMA Energy App or via an RFID card that has been previously added under access management.
Charging approval applies to the active charging process. When charging is complete, the
charging station is locked again.
Activation can be performed during commissioning via the installation wizard under Access
management or during operation via the user interface under Select charging station >
Configuration > Access management.
4.5.13 Knock sensor
The knock sensor can be used to operate the charging station (see Section4.3, page23). The
following functions are available:
Knock code Function
Knock once Activates the backlight on the display and the ambient lighting
Knock once with lighting ac-
tivated
Change to display menu
Double knock with charging
cable plugged in
Activates rapid charging function and WPS function
Double knock without charg-
ing cable plugged in
Activates WPS function
4.6 LED Signals
LED signal Explanation
Green LED and red LED are flash-
ing simultaneously
(2 s on and 2 s off)
Device not configured.
Operation of the product is stopped because the initial configu-
ration was not completed. The product automatically starts op-
eration as soon as the configuration has been carried out (e.g.
using the commissioning wizard or via a System Manager).