ABB ACS560 Firmware Manual page 228

228 Parameters
No. Name/Value
23.23 Emergency stop
time
0.000...1800.000 s
23.28 Variable slope
Off
On
23.29 Variable slope rate
2...30000 ms
Description
Defines the time inside which the drive is stopped if an
emergency stop Off3 is activated (ie. the time required for the
speed to change from the speed value defined by parameter
46.01 Speed scaling or
Emergency stop mode and activation source are selected by
parameters 21.04 Emergency stop mode
Emergency stop source
also be activated through fieldbus.
Note:
• Emergency stop Off1 uses the standard deceleration ramp
as defined by parameters 23.11...23.1523.12...23.13.
• The same parameter value is also used in frequency
control mode (ramp parameters
28.71...28.7528.72...28.73).
Emergency stop Off3 deceleration time.
Activates the variable slope function, which controls the slope
of the speed ramp during a speed reference change. This
allows for a constantly variable ramp rate to be generated,
instead of just the standard two ramps normally available.
If the update interval of the signal from an external control
system and the variable slope rate
are equal, speed reference
a straight line.
Speed reference
Speed
reference
t
A
t = update interval of signal from an external control system
A = speed reference change during t
This function is only active in remote external control.
Variable slope disabled.
Variable slope enabled (not available in local control).
Defines the rate of the speed reference change when variable
slope is enabled by parameter
For the best result, enter the reference update interval into
this parameter.
Variable slope rate.
46.02 Frequency scaling
and 21.05
respectively. Emergency stop can
(23.29 Variable slope
(23.02 Speed ref ramp
23.02 Speed ref ramp output
23.28 Variable slope.
Def/FbEq16
3.000
to zero).
10 = 1
Off
rate)
output) is
Time
0
1
50
1 = 1