External Emergency Stop; Connection To An External Load Management System - Siemens SICHARGE D Operating Instructions Manual

3.11

External Emergency Stop

You can integrate the charging station into the safety loop of an existing system. The
charging station has an interface for the signal cables of the external emergency stop. The
charging station is factory-equipped with a wire jumper at this interface. When
commissioning and integrating the external safety loop, remove the wire jumper. See section
"Mains connection (Page 98)".
The charging station has the option of external emergency stop if the charging station is
prepared for a dispenser or external load management system.
When the external emergency stop triggers, the following happens:
• The charging station goes out of order
• An error message is displayed on the touch screen
• The LED strips on the cabinet light up red
• An error message is generated in the SCB
NOTE
No measuring data relevant to the calibration law in the case of emergency stop
The charging process is aborted immediately when the emergency stop is triggered during a
charging process. No measuring data relevant to the calibration law can be created for an
aborted charging process. Billing for this charging process is not possible.
3.12

Connection to an external load management system

The charging station can be integrated into an external load management system (ELMS),
which can dynamically limit the power consumption of the charging station (see section
"Mains connection (Page 98)"). One application case is, for example, a charging park with
limited supply system power and additional battery storage to handle load peaks. The ELMS
interface offers the possibility to limit the power consumption of the charging stations in real
time, depending on the grid connection, battery capacity and demand of the charging
stations.
The charging station and the ELMS communicate via a local Modbus TCP connection. In this
case the WAN port of router -XF3 must be reconfigured to enable communication with the
controller. Ethernet ("Wired WAN") is then no longer available as a failover to -XF3. See
section "Routers (Page 53)".
The power reduction of the charging station can also take place during an ongoing charging
process. This reduction is communicated to the vehicle, which then requests a lower charging
current. This procedure only takes a few seconds. Similarly, the ELMS can revoke a previously
limited power consumption.
If the communication between the charging station and ELMS fails, a fallback value is defined
that the charging station does not exceed at its supply system connection. In the event of a
fault, the ELMS can also trigger the emergency stop of the charging station to protect the
supply system from overload.
You can operate several charging stations with one load management system at the same
time. To do this, make sure that no IP address is assigned multiple times on the WAN ports.
For more details, see operating instructions 8EM5907-0AA00-1AA8 ELMS
(https://support.industry.siemens.com/cs/us/en/view/109814743).
SICHARGE D
Operating Instructions, 11/2023, A5E50556539-AG
3.12 Connection to an external load management system
Description
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