15. Access control
To protect the IED from unauthorized access
and to maintain information integrity, the
IED is provided with a four-level, role-based
authentication system with administrator-
programmable individual passwords for the
viewer, operator, engineer and administrator
level. The access control applies to the front-
panel user interface, the web-browser based
user interface and the PCM600 tool.
16. Inputs and outputs
Depending on the standard configuration se-
lected, the IED is equipped with three phase-
current inputs and one residual-current input
for non-directional earth-fault protection,
or three phase-current inputs, one residual-
current input and one residual voltage input
for directional earth-fault protection or three
phase-current inputs, one residual-current
input, three phase-voltage inputs and one
residual voltage input for directional earth-
fault protection and directional overcurrent
protection.
The phase-current inputs are rated 1/5 A.
Two optional residual-current inputs are
available, i.e. 1/5 A or 0.2/1 A. The 0.2/1 A in-
put is normally used in applications requiring
sensitive earth-fault protection and featuring
core-balance current transformers. The three
phase-voltage inputs and the residual-voltage
input covers the rated voltages 100, 110, 115
and 120 V. Both phase-to-phase voltages and
phase-to-earth voltages can be connected.
The phase-current input 1 A or 5 A, the
residual-current input 1 A or 5 A, alternatively
0.2 A or 1 A, and the rated voltage of the
residual voltage input are selected in the IED
software. In addition, the binary input thresh-
olds 18…176 V DC are selected by adjusting
the IED’s parameter settings.
All binary input and output contacts are
freely configurable with the signal matrix tool
in PCM600.
Please refer to the Input/output overview
table and the terminal diagrams for more
detailed information about the inputs and
outputs.
17. Communication
The IED supports a range of communication
protocols including IEC 61850, IEC 60870-5-
103, Modbus
®
and DNP3. Operational infor-
mation and controls are available through
these protocols. However, some communica-
Table 3. Input/output overview
Standard configuration Analog inputs Binary inputs/outputs
CT VT BI BO
A 4 1 3 6
B 4 1 11 (17)
1)
10 (13)
1)
C 4 - 4 6
D 4 - 12 (18)
1)
10 (13)
1)
E 4 5
2)
16 10
F 4 5
2)
16 10
1)
With optional binary I/O module ( )
2)
One of the five channels is reserved for future applications
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