Parameters 207
Defines, together with
and
, the maximum allowed speed of the motor
(overspeed protection). If
or the
estimated speed exceeds the speed limit defined by
parameter
or
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 … 6000.0 rpm
Overspeed trip margin.
See par.
Parameters
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
defines the
maximum allowed deviation from the expected deceleration
rate, which is calculated from parameters
(Off1)
or
(Off3). If the actual
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% and
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
Summary of Contents for ACS860
Page 1: ... ABB INDUSTRIAL DRIVES ACS860 primary control program Firmware manual ...
Page 4: ......
Page 10: ...10 Table of contents ...
Page 18: ...18 Using the control panel ...
Page 24: ...24 Control locations and operating modes ...
Page 54: ...54 Program features ...
Page 78: ...78 Program features ...
Page 90: ...90 Application macros ...
Page 342: ...342 Additional parameter data ...
Page 380: ...380 Fault tracing ...
Page 381: ...Fault tracing 381 ...
Page 382: ...382 Fault tracing ...
Page 436: ...436 Control chain diagrams ...