Parameters 209
Parameters
, provide a supervision function for normal (ie. non-
emergency) ramp stopping.
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
…
. If the
actual deceleration rate (
) deviates too much from the
expected rate, the drive trips on
, sets bit 14
of
, and coasts to a stop.
If
is set to 0% and
is set to 0 s, the ramp stop
supervision is disabled.
0%
0…300%
Maximum deviation from expected deceleration rate.
1 = 1%
is set to 0%, this
parameter defines the maximum time a ramp stop is allowed
to take. If the motor has not stopped when the time elapses,
the drive trips on
, and coasts to a stop.
is set to a value other than 0%, this parameter defines
a delay between the receipt of the stop command and the
activation of the supervision. It is recommended to specify a
short delay to allow the speed change rate to stabilize.
0 s
0…32767 s
Maximum ramp-down time, or supervision activation delay.
1 = 1 s
Selects warnings to be suppressed. The parameter is a 16-bit
word with each bit corresponding to a warning. Whenever a
bit is set to 1, the corresponding warning is suppressed.
The bits of this binary number correspond to the following
warnings:
0000b
0000b…1101b
Warning suppression word.
1 = 1
Sets a custom motor current fault limit.
The drive automatically sets an internal motor current limit
according to the drive hardware. The internal limit is
appropriate in most cases, but this parameter can be used to
set a lower current limit, for example, to protect a permanent
magnet motor from demagnetization.
Note:
The limit defines the maximum peak current of one
phase.
With this parameter at 0.0 A, only the internal limit is in force.
0.00 A
0.00 … 30000.00 A Custom motor current fault limit.
See par.
No.
Name/Value
Description
Def
/
FbEq16
Bit
Fault
0
Overvoltage
1
Reserved
2
Encoder 1
4
CU (Control unit) battery
5…15
Reserved
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 ...