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280 Parameters
and
, together with
, 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
. Otherwise,
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
, and coasts to a stop.
If
is set to 0 s, the ramp stop
supervision is disabled.
0%
0…300%
Maximum deviation from expected deceleration rate.
1 = 1%
If parameter
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
, sets bit 14 of
, 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
0000h…FFFFh
Warning suppression word.
1 = 1
No.
Name/Value
Description
Def
/
FbEq16
Bit
Name
Warning
0
Overvoltage
1
Reserved
2
Encoder 1
(for encoder 1)
3
Encoder 2
(for encoder 2)
4
CU (Control unit) battery
5
EmergencyStop Off2
6
EmergencyStop Off1 Off3
7…15
Reserved
Summary of Contents for ACS880-x04
Page 1: ... ABB INDUSTRIAL DRIVES ACS880 primary control program Firmware manual ...
Page 4: ......
Page 18: ...18 Using the control panel ...
Page 24: ...24 Control locations and operating modes ...
Page 112: ...112 Application macros ...
Page 496: ...496 Additional parameter data ...
Page 544: ...544 Fault tracing ...
Page 602: ...602 Control chain diagrams ...