Parameters 279
Emergency ramp
supervision delay
If parameter
is set to 0%,
this parameter defines the maximum time an emergency stop
(mode Off1 or Off3) 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 emergency 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 how the drive reacts when a main cooling fan fault is
detected.
Note:
With an inverter unit consisting of one or more frame
R8i inverter modules with speed-controlled fans, it may be
possible to continue operation even if one main fan of a
module stops. When fan failure is detected, the control
program will automatically
• set the other fan of the module to full speed
• set the fans of the other modules (if any) to full speed
• decrease the switching frequency to a minimum, and
• disable the supervision of temperature difference between
the modules.
, the inverter unit will trip (but
still carry out the actions listed above). Otherwise, the inverter
will attempt to continue operation.
Fault
The drive trips on fault
.
0
Warning
warning.
1
No action
No action taken.
2
(Only visible with a ZCU control unit)
Selects how the drive reacts when an auxiliary fan fault is
detected.
Fault
The drive trips on fault
.
Note:
The fault is suppressed for two minutes after power-up.
During this time, the drive only generates a warning,
0
Warning
The drive generates a warning,
1
No.
Name/Value
Description
Def
/
FbEq16
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 ...