125
"B" Group: Fine Tuning Functions Section 3-6
the inverter does not receive the braking confirmation signal within the
braking confirmation time (b124), it trips with the braking error signal (BER)
output. When the braking confirmation signal (BOK) has not been as-
signed to any intelligent input terminal, the Brake Wait Time for Confirma-
tion (b124) is invalid. In such cases, the inverter proceeds to the operation
described in item (4) after the output of the brake release signal.
4. After the input of the braking confirmation signal (or the output of the brake
release signal [when the BOK signal function is disabled]), the inverter
waits for the Brake Wait Time for Acceleration (b122), and then starts ac-
celerating the motor up to the set frequency.
5. When the operation command is turned off, the inverter decelerates the
motor down to the braking frequency (b127), and then turns off the brake
release signal (BRK).
6. When the braking confirmation signal (BOK) has been assigned to an in-
telligent input terminal (that is, when "44" is specified for one of "C001" to
"C007"), the inverter waits, after turning off the brake release signal, until
the braking confirmation is turned off at least for the Brake Wait Time for
Confirmation (b124) without decelerating the motor. If the braking confir-
mation signal is not turned off within the Brake Wait Time for Confirmation
(b124), the inverter trips with the braking error signal (BER) output. When
the braking confirmation signal (BOK) has not been assigned to any intel-
ligent input terminal, the Brake Wait Time for Confirmation (b124) is invalid.
In such cases, the inverter proceeds to the operation described in item (7)
after the brake release signal is turned off.
7. After the braking confirmation signal (or the brake release signal [when the
BOK signal function is disabled]) is turned off, the inverter waits for the
Brake Wait Time for Stopping (b123), and then starts decelerating the mo-
tor down to 0 Hz.
Note The above timing chart shows the operation on the assumption that the brak-
ing confirmation signal "44" (BOK) is assigned to one of the terminal 1 to 7
(C001~C007). If the BOK signal is not assigned to any terminal, the Brake Wait
Time for Acceleration (b122) begins when the brake release signal is turned
on, and the Brake Wait Time for Stopping (b123) begins when the brake
release signal is turned off.
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