9 Commissioning
(continued)
C232-302-401/402/403/404-603 / C232/EN M/A23 9-5
Checking the binary signal
inputs
By selecting the corresponding state signal (‘Oper/Cycl/Phys’ folder), it is possible to
determine whether the input signal that is present is recognized correctly by the C232.
The values displayed have the following meanings:
Low: Not energized.
High: Energized.
Without function: No functions are assigned to the binary signal input.
This display appears regardless of the binary signal input mode selected.
Checking the output relays
It is possible to trigger the output relays for a settable time period for test purposes (time
setting at OUTP: Hold-time for test in 'Oper/CtrlTest/' folder). First select the
output relay to be tested (OUTP: Relay assign. f.test, ‘Oper/CtrlTest/’ folder).
Test triggering then occurs via OUTP: Relay test (Oper/CtrlTest/' folder). It is
password-protected (see the section entitled ‘Password-Protected Control Operations’ in
Chapter 6).
!
Before starting the test, open any triggering circuits for external devices so that no
inadvertent switching operations will take place.
Checking the current-
measuring inputs
By applying appropriate analog signals as ‘measuring variables’ to the measuring inputs,
the user can check via the operating data displays (see Chapter ‘Information and Control
Functions’) whether the protection and control unit detects the analog signals with the
specified accuracy (folder ‘Oper/Cycl/Data/’).
MAIN: Current A p.u.: Display of the updated phase current A referred to the
nominal device current I
nom
MAIN: Current B p.u.: Display of the updated phase current B referred to the
nominal device current I
nom
MAIN: Current C p.u.: Display of the updated phase current C referred to the
nominal device current I
nom
!
Application of analog signals to the measuring inputs must be in compliance with the
maximum permissible rating of the measuring inputs (see the Chapter on Technical
Data).
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