| Introduction to the Wallbox eM4 Twin
12
8
Housing
The wallbox housing integrates the two power modules
9
and the other electronic components for com-
munication in a group. The wallbox is securely fastened at the installation location by means of the sus-
pension points
1
and the attachment points
2
and
6
.
9
Power module
The power module integrates the components for the respective charge point, including the RCCB, DC
residual current detection, the contactor, the MID-compliant energy meter
"
and the Type 2 charging
socket
7
.
!
RCCB flap
The RCCB flap protects the RCCB of the power module and is locked and unlocked using the key supplied.
The locking mechanism also locks the housing cover
8
: To open the housing cover, both RCCB flaps must
be unlocked and folded upwards.
"
MID-compliant energy meter
The MID-compliant energy meter displays various information on the charging operation. You can find fur-
ther information on this topic in section "Information displayed in the energy meter" on page 15.
#
Terminal block
Directly behind the supply cable area
3
is the terminal block for connecting the power line: The connec-
tion pattern is shown on the communication module
$
. In a group installation, the connection diagram
must be adapted to each wallbox to ensure an even load on the phases (see "Electrical connection of the
wallbox" on page 30).
$
Communication module
The communication module provides a LAN interface for data cabling and a USB port (Controller wallbox
only) for the supplied LTE USB stick for wireless communication with a backend (see "Preparing and install-
ing the LTE USB stick" on page 34).
In the upper left area of the communication module, there is access to the reset push button marked with a
screwdriver and the word
Reset
, which allows the wallbox to be reset to the factory settings (see "Re-
setting the wallbox and restoring to factory settings" on page 57).
In addition, the communication module can be flipped forward, allowing access to terminal
EN1
for con-
%
HMI module
The HMI (
H
uman
M
achine
I
nterface) module of the wallbox displays the various states of the electronic
components for monitoring and determining the status of the charge points via a multi-coloured LED ring
and an acoustic signal generator (see next section).
It also includes the RFID reader module for authorising the charging processes, provided that the wallbox
was configured accordingly during installation or is operated with a backend. The RFID function is set up
via the
ABL Configuration App