Siemens SICAM A8000 Series User Manual

Standard I/O Modules
70 Unrestricted SICAM A8000 Series, SICAM I/O Modules
DC8-012-2.06, Edition 09.2019
2.9.6 External Circuitry
The following circuitry variants are examples and not related exclusively to the shown values.
Danger
Works on the circuitry may be performed in de
-energized state only!
During electrical installation, all the rules and regulations of power systems must be considered.
2.9.6.1 Short-Circuit Indicator
The current inputs I1, I2/IN, I3 are connected with the LoPo measuring sensors of the
corresponding phase currents.
In this configuration, the module functions as short-circuit indicator. Fault information on the
direction is not provided.
Note
With this connection scheme
, the accuracy of ground current measurements for isolated/resonant ground
connections cannot be assured.
P2P1
P2
P1
P2
P1
S2S1
S2S1
S2
S1
225 mV 225 mV 225 mV
N
L3
L2
L1
AI-8511
X2
1 2
3
4 5
6
7
8 9
X1
1 2
3
4 5
6
7
8 9
10
DNC
I3- I3+ I1- I1+ DNC
DNC
DNC
N N N DNC
I2-/IN+
I2-/IN-
U3 U2 U1
FE Shield
CC Shield

Siemens SICAM A8000 Series Specifications

General

Modular Design	Yes
Operating Temperature Range	-40°C to +70°C
Communication Interface	Ethernet, RS485, RS232
Protection Class	IP20
Communication Protocols	IEC 61850, DNP3, Modbus, IEC 60870-5-104
Power Supply	24 V DC, 230 V AC
Mounting	DIN rail
Digital Inputs	Up to 32
Digital Outputs	Up to 16
Input Voltage Range	24 V DC to 230 V AC