Mounting and Commissioning
3.1 Mounting and Connections
SIPROTEC, 7SD610, Manual
C53000-G1176-C145-6, Release date 02.2011
271
Binary Inputs and Outputs
The connections to the power plant depend on the possible allocation of the binary inputs and outputs, i.e. how
they are assigned to the power equipment. The preset allocation can be found in the tables in Section A.4 of
the Appendix. Check also whether the labelling corresponds to the allocated indication functions.
It is also very important that the feedback components (auxiliary contacts) of the circuit breaker monitored are
connected to the correct binary inputs which are assigned for this purpose.
Changing Setting Group
If binary inputs are used to change setting groups, please observe the following:
• To enable the control of 4 possible setting groups 2 binary inputs have to be available. One binary input must
be set for „>Set Group Bit0“, the other input for „>Set Group Bit1“.
• To control two setting groups, one binary input set for „>Set Group Bit0“ is sufficient since the binary
input „>Set Group Bit1“, which is not assigned, is considered to be not controlled.
• The status of the signals controlling the binary inputs to activate a particular setting group must remain con-
stant as long as that particular group is to remain active.
The following Table shows the relationship between binary inputs and the setting groups A to D. Principal con-
nection diagrams for the two binary inputs are illustrated in the following Figure 3-1. The Figure illustrates an
example in which both Set Group Bits 0 and 1 are configured to be controlled (actuated) when the associated
binary input is energized (high).
Table 3-1 Changing setting groups with binary inputs
Figure 3-1 Connection diagram (example) for setting group switching with binary inputs
Binary Input Active settings group
>Set Group Bit 0 >Set Group Bit 1
Not energized Not energized Group A
Energized Not energized Group B
Not energized Energized Group C
Energized Energized Group D
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