2.3 Overview of Function Code
C
hap.
2
FUN
CT
IO
N
C
O
D
E
S
■
Brake check time (L84)
L84 specifies the allowable time for the
BRKE
signal to turn ON (OFF) after the
BRKS
signal is
turned ON (OFF). If the ON (OFF) state of the
BRKE
signal does not match that of the
BRKS
signal
within the time specified by L84, the inverter trips with alarm
Er6
. For confirming MC operation,
taking use of timer for confirming the condition of
SW52-2
and
CS-MC
.
- Data setting range: 0.00 to 10.00 (s)
Refer to the descriptions of function codes L84 to L86 for details.
Brake control signal
BRKS
Setting "57" to any of the general-purpose, programmable output terminal (by E20 to E24 and E27)
assigns the
BRKS
signal to that terminal. The
BRKS
signal is available in two modes specified by
L80.
The
BRKS
signal turns OFF when the time length specified by L83 elapses after the speed (< stop
speed) drops below the stop speed, independent of a run command. Adjust the braking timing to
match the running pattern.
If the
BRKS
signal turns OFF with a run command being ON, the
BRKS
signal will no longer turn
ON again even the ON conditions are met again. To turn the
BRKS
signal ON again, turn the run
command OFF once.
Brake confirmation signal
BRKE
Setting "65" to any of the general-purpose, programmable input terminal (by E01 to E08, E98 and
E99) assigns a
BRKE
signal to that terminal. This signal is used to confirm whether the actual brake
works normally with the
BRKS
signal issued from the inverter. Configure an external circuit that
turns the signal ON or OFF when the brake is actually released or applied, respectively.
If there is a time lag between the status change of the
BRKS
signal and the corresponding change of
the
BRKE
signal, specify the lag time with L84 (Brake check timer). During the lag time set by L84,
even if there is a difference between the output status of the
BRKS
signal and input status of the
BRKE
signal, the inverter does not trip. If the output status of the
BRKS
signal is not identical with
the input status of the
BRKE
signal after the time set in L84 elapses, the inverter trips with alarm
Er6
. Note that the time lag function does not work unless
BRKS
and
BRKE
are specified.
Make sure that the total time of the brake check time (L84) and the OFF delay time (L83) is less than
the stop speed holding time (H67).
2-165
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