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278 Parameters
Defines, together with
, the maximum allowed speed of the motor
(overspeed protection). If
or the
estimated speed exceeds the speed limit defined by
parameter
by more than the value of this
parameter, the drive trips on the
fault.
Example:
If the maximum speed is 1420 rpm and speed trip
margin is 300 rpm, the drive trips at 1720 rpm.
500.00 rpm
0.00 … 10000.0
rpm
Overspeed trip margin.
See par.
Emergency ramp supervision delay
, together with
, provide a supervision function for
emergency stop modes Off1 and Off3.
The supervision is based on either
• observing the time within which the motor stops, or
• comparing the actual and expected deceleration rates.
If this parameter is set to 0%, the maximum stop time is
directly set in parameter
. Otherwise,
defines the
maximum allowed deviation from the expected deceleration
rate, which is calculated from parameters
(Off1)
or
deceleration rate (
) deviates too much from the
expected rate, the drive trips on
sets bit 8 of
, and coasts to a stop.
If
is set to 0 s, the emergency
stop ramp supervision is disabled.
See also parameter
0%
0…300%
Maximum deviation from expected deceleration rate.
1 = 1%
No.
Name/Value
Description
Def
/
FbEq16
Speed (
Time
Overspeed trip level
Overspeed trip level
0
Содержание ACS880-x04
Страница 1: ... ABB INDUSTRIAL DRIVES ACS880 primary control program Firmware manual ...
Страница 4: ......
Страница 18: ...18 Using the control panel ...
Страница 24: ...24 Control locations and operating modes ...
Страница 111: ...Application macros 111 Fieldbus control macro This application macro is not supported by the current firmware version ...
Страница 112: ...112 Application macros ...
Страница 496: ...496 Additional parameter data ...
Страница 544: ...544 Fault tracing ...
Страница 602: ...602 Control chain diagrams ...