![ABB ACS880 Series Скачать руководство пользователя страница 115](http://html.mh-extra.com/html/abb/acs880-series/acs880-series_firmware-manual_2617115.webp)
Brake has been requested to close. The drive logic is requested
to ramp down the speed to a stop (
b3 = 1). The open signal
is kept active (
, b0 = 1). The brake logic will remain in this
state until the motor speed has remained below
for the
time defined by
.
BRAKE CLOSING WAIT
Closing conditions have been met. The open signal is deactiv-
ated (
b0 → 0) and the closing torque written into
. The
ramp-down request is maintained (
b3 = 1). The brake logic
will remain in this state until
has elapsed.
BRAKE CLOSING DELAY
At this point, if
is set to
, the logic proceeds
to BRAKE CLOSED state. If an acknowledgement signal source
has been selected, its state is checked; if the state is not “brake
closed”, the drive generates an
warning. If
=
the drive will trip on a
fault after
.
The brake is closed (
, b0 = 0). The drive is not necessarily
modulating.
BRAKE CLOSED
Note concerning open-loop (encoderless) applications: If the
brake is kept closed by a brake close request (either from
parameter
or an FSO-xx safety functions module) against
a modulating drive for longer than 5 seconds, the brake is forced
to closed state and the drive trips on a fault,
1) A warning can alternatively be selected by
; if so, the drive will keep modulating and remain in
this state.
State change conditions:
Brake control disabled (parameter
→ 0).
1
, bit 2 = 0 or brake is forced to close by optional FSO-xx safety functions module.
2
Brake has been requested to open and
has expired.
3
Brake open conditions (such as
) fulfilled and
= 0.
4
has elapsed and brake open acknowledgement (if chosen by
) has been re-
ceived.
5
Brake has been requested to close.
6
Motor speed has remained below closing speed
for the duration of
7
has elapsed and brake close acknowledgement (if chosen by
) has been re-
ceived.
8
Brake has been requested to open.
9
Brake control enabled (parameter
→ 1).
10
Program features 115
Содержание ACS880 Series
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