20 CC612(4G)_D00325_06_M_XXEN/09.2021
Connection
4.2.1.6 Control Pilot (CP) and Proximity Pilot (PP) connections
The Control Pilot (CP) and Proximity Pilot (PP) contacts connect the charge controller to the outlet, enabling it
to communicate with the vehicle and the cable plug. The CP and PP contact allow the charge controller to de-
termine whether a cord has been plugged into the socket (proximity) and to inform the vehicle about the
amount of power it can draw (refer to IEC 61851).
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The CP terminal is used for Power Line Communication (PLC) in charge controller variants with this integ-
rated feature.
4.2.1.7 I/O extension
The CC612 has additional I/O interfaces available via a configurable 3-channel I/O interface (
connector C: 21,
24, IN1-, IN1+, IN2-, IN2+
) that can be used for multiple purposes, for example:
• Parking management interface (The supported communication protocol is proprietary to Scheidt &
Bachmann and based on the available auxiliary relay and one available input)
• Additional household main socket outlet control
• Power outage monitoring (e.g. RCD trip monitoring)
• Cooling fan switch for over-temperature control
• Connection to a meter with an S0 interfaced.
4.2.1.8 Residual direct current monitoring module (RDC-M)
For fault current detection in an AC charging system, an integrated residual direct current monitoring module
(RDC-M) is used. This module uses an external magnetically shielded measuring current transformer. This all-
ows the use of a residual current device (RCD) type A instead of an RCD type B. The relay in the charge cont-
roller is de-energised if, during the charging process, a fault current I
Δn
≥ DC 6 mA flows. The measured fault
currents RMS/DC are made available to the backend system via OCPP message. The use of device variants
with an integrated 4G modem is only possible in member states of the European Union.
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To ensure electrical safety, the switch-off times according to IEC 62955 are observed.
4.2.1.9 Plug lock connection
Under normal operating conditions, the type 2 socket automatically locks the plug when a vehicle is connec-
ted to the charging system. The locking action can be heard. After disconnecting the plug from the vehicle,
the charging system socket automatically unlocks the charging system socket and the cable can be removed.
If both locking and unlocking work, the socket was correctly attached to the charging system controller. Via
terminals IN , +, OUT, - (i.e. plug lock connections), the charge controller can interface to different socket/ac-
tuator types. Type 2 sockets from various manufacturers and their corresponding connection to the charge
controller are shown in „Connection Type 2 Socket“ on page 15:
