ABB ACH550-02-645A-4 [248/454] Group 30 fault functions

ABB ACH550-02-526A-4 [248/454] Group 30 fault functions
244 Parameter listing and descriptions
ACH550-02 User's Manual
Group 30: FAULT FUNCTIONS
This group defines situations that the drive should recognise 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 analogue input (
AI) signal drops below
the fault limits and
AI is used:
as the active reference source (Group 11: REFERENCE SELECT)
as the Process or External PID controllers' feedback or setpoint
source (Group 40: PROCESS PID SET 1, Group 41: PROCESS PID
SET 2 or Group 42: EXT / TRIM PID) and the corresponding PID
controller is active.
3021
AI1 FAULT LIMIT and 3022 AI2 FAULT LIMIT set the minimum limits.
0 =
NOT SEL – No response.
1 =
FAULT – Displays a fault (7, AI1 LOSS or 8, AI2 LOSS) and the drive
coasts to stop.
2 =
CONST SP 7 – Displays an alarm (2006, AI1 LOSS or 2007, AI2 LOSS)
and sets the speed using 1208
CONST SPEED 7.
3 =
LAST SPEED – Displays an alarm (2006, AI1 LOSS or 2007, AI2 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 analogue 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.
Note: When either of the two external control locations are active, and
start, stop and/or direction are through the control panel – 1001
EXT1
COMMANDS / 1002 EXT2 COMMANDS = 8 (KEYPAD) – the drive follows the
speed reference according to the configuration of the external control
locations, instead of the value of the last speed or parameter 1208
CONST SPEED 7.
WARNING! If you select CONST SP 7 or LAST SPEED, make sure that
continued operation is safe when the control panel communication
is lost.

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