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Open-loop Start-up
17
Mechanical Brake Timing at Start
The mechanical brake should be picked
during the DC injection start time (DC
START TIME (A1) parameter).
•
But allow 0.5 seconds for the motor to
build up flux before lifting the mechanical
brake.
•
Also, do not have the DC injection last
more than 0.5 seconds after the
mechanical brake is lifted.
•
If drive controls the mechanical brake,
the DC inject start time should be at least
0.5 seconds greater than the brake pick
delay (BRAKE PICK DELAY (A1)).
•
AUTO STOP EN (C1) parameter
-
Enabled - The drive will start DC
injection phase when it receives a
run command and a non-zero speed
command.
-
Disabled - The drive will start DC
injection phase when it receives a
run command.
Mechanical Brake Timing at Stop
The mechanical brake should be dropped
during the DC injection stop time (DC STOP
TIME (A1) parameter).
•
But allow additional stopping dc injection
time after the mechanical brake is
dropped for it to close.
•
If drive controls the mechanical brake via
BRAKE PICK logic output, the DC inject
stop time should be greater than the
brake pick delay (BRAKE PICK DELAY
(A1)) by the time it takes for the
mechanical brake to close.
•
AUTO STOP ENA (C1)=DISABLED
STOPPING MODE SEL (C1) =
- RAMP
- Run command removed - the
drive will ramp to DC injection
phase.
- Commanding zero speed - the
drive will try to hold zero speed
(not DC injection).
- IMMEDIATE
- Run command removed - the
drive will immediate turn off its
outputs (coast to stop).
- Commanding zero speed - the
drive will ramp to DC injection
phase.
•
AUTO STOP ENA (C1) =ENABLED
STOPPING MODE SEL (C1) =
- RAMP
- Run command removed - the
drive will ramp to DC injection
phase.
- Commanding zero speed - the
drive will ramp to DC injection
phase.
- IMMEDIATE
- Run command removed - the
drive will immediately turn off its
outputs (coast to stop).
- Commanding zero speed - the
drive will immediately turn off its
outputs (coast to stop).
Содержание HPV 600
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