Version Changes
COMM1 Bug fixing with the use of the MODBUS communication
protocol:
Faults can now be read out.
MAIN
Bug fixing:
●
The measured operating values for the positive
sequence currents are now calculated
independently of the DTOC/IDMT protection
functions.
DIFF The starting condition for the saturation discriminator
has been enhanced by the addition of a further
minimum condition for the restraining quantity with
basic filtering. Without this minimum condition, the
saturation discriminator could be incorrectly triggered
during the test of a characteristic using virtual test
signals in the absence of a preload current.
CBF_x As an option, the loss of load/undercurrent criterion can
now also be used with the residual current.
The external function startup may now occur either
when only the loss of load/undercurrent criterion is
applied or also with the CB contact position scanning
criterion.
P631
‑308
‑407/408
‑621-720
Release: 2009-07-29
Hardware
No changes.
Diagram
No changes.
Software
DIFF
Bug fixing:
●
It could happen that triggering of the saturation
discriminator by an external fault was not reset
fast enough when an additional fault had
occurred within the same protection zone.
CBF_x
Bug fixing:
●
The associated signal CBF_x : Current flow y
(y=A, B, C) would sometimes jitter during an open
command.
●
Triggering of the circuit breaker failure protection
function would sometimes be delayed. Further
delays could sometimes occur with the signals for
CBF_1 and CBF_2.
P631
‑308
Hardware
A5 P631 Version History
P631
P631/EN M/R-11-C // P631-310-650 A5-19
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