Access control
To protect the relay from unauthorized access and to maintain
information integrity, the relay is provided with a four-level, role
based authentication system with administrator-programmable
individual passwords for the viewer, operator, engineer and
administrator levels. The access control applies to the local
HMI, the Web HMI and PCM600.
Inputs and outputs
The relay is equipped with three phase-segregated differential
current inputs and one residual current input. The differential
and the residual current inputs are rated 1/5 A, that is, the
inputs can be connected to either 1 A or 5 A secondary current
transformers. The optional residual current input rated 0.2/1 A
is normally used in applications requiring sensitive earth-fault
protection and featuring core-balance current transformers.
The rated currents of the analog inputs can be selected in the
relay software. In addition, the binary input threshold (16…176
V DC) can be selected by adjusting the relay’s parameter settings.
All binary input and output contacts are preconfigured
according to the configuration, but can be easily reconfigured
by setting application-based parameters using the signal
configuration functionality of the local HMI and Web HMI.
See the input and output overview table and the terminal
diagram for more information about the inputs and outputs.
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