Siemens SICHARGE D Operating Instructions Manual page 22

Description
2.6 Modbus registers (SICHARGE to ELMS)
Min EVSE power (G_Power_Min)
SICHARGE calculates the minimum active power required from the grid to support the current
charging outlets and auxiliary loads. It is expected that the ELMS provides power limit setpoints
(G_PowerLimit and G_FallbackPLim) which are at least equal to, or greater than, this value.
Max EVSE power (G_Power_Max)
SICHARGE calculates the maximum active power required from the grid based on the installed
capacity and further limits set from SCB. It is expected that the ELMS provides power limit
setpoints (G_PowerLimit and G_FallbackPLim) which are at least equal to, or less than, this value.
Actual average EVSE active power (G_APower_Actual)
The actual average EVSE active power unit is kW and is the value of power consumed by
SICHARGE from the grid as measured by the internal incomer power meter. Note that this value
is not always available and depends on the installed power meter in SICHARGE, which itself is an
option. Check the description of status word 1 (bit 14) and error word 1 (bit 13) for the validity
of this signal.
Actual average EVSE apparent power (G_SPower_Actual)
The actual average EVSE apparent power unit is kVA and is the value of power consumed by
SICHARGE from the grid as measured by the internal incomer power meter. Note that this value
is not always available and depends on the installed power meter in SICHARGE, which itself is an
option. Check the description of status word 1 (bit 14) and error word 1 (bit 13) for the validity
of this signal.
Actual voltage line-neutral (U_L1N, U_L2N, U_L3N)
The actual voltage EVSE line-neutral as measured by the internal incomer power meter. Note
that this value is not always available and depends on the installed power meter in SICHARGE,
which itself is an option. Check the description of status word 1 (bit 14) and error word 1 (bit 13)
for the validity of this signal.
Actual power factor line (COS_PHI_L1, COS_PHI_L2, COS_PHI_L3)
The actual power factor of each line as measured by the internal incomer power meter. Note that
this value is not always available and depends on the installed power meter in SICHARGE, which
itself is an option. Check the description of status word 1 (bit 14) and error word 1 (bit 13) for
the validity of this signal.
EVSE power limit (G_Power_Limit_active)
The EVSE power limit active is set internally in SICHARGE and is calculated by adding the power
limits (minimum of ELMS, SCB limits) for each active charging outlet, taking into account
decimal and rounding errors. Hence it may not always be equal to the EVSE active power limit
setpoint (G_PowerLimit).
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External Load Management System
Operating Manual, 07/2022, A5E52045935-AA