Programming Settings For Trip Circuit Monitor - Siemens SIPROTEC 7SJ62 Instruction Manual

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>74 TC trip rel.
52a Contact

6.17.6 Programming Settings for Trip Circuit Monitor

7SJ62 Manual
C53000-G1140-C121-1
checked 500 times before an annunciation is sent. A condition check takes place
about every 600 ms, so trip circuit monitoring is only activated during an actual mal-
function of the trip circuit (after 300 s). After the malfunction in the trip circuit is cleared,
the failure annunciation is reset automatically.
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Figure 6-67 Logic Diagram for Trip Circuit Monitoring with One Binary Input
Figure 6-68 shows the logic diagram for the message that can be generated by the trip
circuit monitor, depending on the control settings and binary inputs.
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>74 TC brk rel.
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Figure 6-68 Message Logic for the Trip Circuit Monitor
Trip circuit monitoring is only in effect and accessible if address  was set to either
 %LQDU\ ,QSXWV or to  %LQDU\ ,QSXW, and the appropriate number of binary
inputs have been masked for this purpose. Trip circuit monitoring can be turned 21
and 2)) at address  )&7 7&. If the masking of the required binary inputs
does not match the selected monitoring type, then a message to this effect is gener-
ated. If the trip circuit monitor is not to be used at all, then address  should be set
to 'LVDEOHG. Further settings are not needed. The message of a trip circuit interrup-
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n FAIL: Trip cir.
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n.. .....Number of Condition Checks (= 500)
(Measurement Repetition Occurs every 600 ms)
or
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Configured
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Configured
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R
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Functions
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74 TC ProgFail
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74 TC OFF
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Function
FAIL: Trip cir.
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74 TC ACTIVE
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74 TC BLOCKED
6-157