ABB ACH550-01, User Manual

Page: 248 / 454

236 Parameter listing and descriptions
ACH550 User's Manual
Group 30: FAULT FUNCTIONS
This group defines situations that the drive should recognize as
potential faults and how the drive should respond if the fault is
detected.
Code Description Range
3001 AI<MIN FUNCTION 0…3
Defines the drive response if the analog input (
AI
) signal drops below
the fault limits and
AI
is used in the reference chain.
• 3021
AI
1
FAULT LIMIT
and 3022
AI
2
FAULT LIMIT
set the minimum limits
0 =
NOT SEL
– No response.
1 =
FAULT
– Displays a fault (7,
AI
1
LOSS
or 8,
AI
2
LOSS
) and the drive
coasts to stop.
2 =
CONST SP
7 – Displays an alarm (2006,
AI
1
LOSS
or 2007,
AI
2
LOSS
)
and sets the speed using 1208
CONST SPEED
7.
3 =
LAST SPEED
– Displays an alarm (2006,
AI
1
LOSS
or 2007,
AI
2
LOSS
)
and sets the speed using the last operating level. This value is the
average speed over the last 10 seconds.
WARNING! If you select
CONST SP
7 or
LAST SPEED
, make sure that
continued operation is safe when the analog input signal is lost.
3002 PANEL COMM ERR 1…3
Defines the drive response to a control panel (operator keypad)
communication error.
1 =
FAULT
– Displays a fault (10,
PANEL LOSS
) and the drive coasts to
stop.
2 =
CONST SP
7 – Displays an alarm (2008,
PANEL LOSS
) and sets the
speed using 1208
CONST SPEED
7.
3 =
LAST SPEED
– Displays an alarm (2008,
PANEL LOSS
) and sets the
speed using the last operating level. This value is the average speed
over the last 10 seconds.
WARNING! If you select
CONST SP
7 or
LAST SPEED
, make sure that
continued operation is safe when the control panel communication is
lost.