Fault Functions - ABB ACS355 series User Manual

248 Actual signals and parameters
All parameters
No. Name/Value
2907 USER MWh
TRIG
0.0...
6553.5 MWh
2908 USER MWh
ACT
00.0...
6553.5 MWh
30 FAULT
FUNCTIONS
3001 AI<MIN
FUNCTION
NOT SEL
FAULT
CONST SP 7
LAST SPEED
Description
Defines the trigger point for the drive power consumption
counter. Value is compared to parameter
ACT value.
Megawatt hours. If parameter value is set to zero, the trigger
is disabled.
Defines the actual value of the drive power consumption
counter. When parameter
set to a non zero value, the counter starts. When the actual
value of the counter exceeds the value defined by
parameter 2907, a maintenance notice is displayed on the
panel.
Megawatt hours. Parameter is reset by setting it to zero.
Programmable protection functions
Defines the drive response if the analog input (AI) signal
drops below the fault limits and AI is used
• as the active reference source (group
SELECT)
• as the process or external PID controllers' feedback or
setpoint source (group
41 PROCESS PID SET 2
corresponding PID controller is active.
3021 AI1 FAULT LIMIT
fault limits.
Protection is inactive.
The drive trips on fault
and the motor coasts to stop. Fault limit is defined by
parameter 3021 AI1 FAULT LIMIT
The drive generates alarm
(2007) and sets the speed to the value defined by
parameter 1208 CONST SPEED
parameter 3021 AI1 FAULT LIMIT
WARNING! Make sure that it is safe to continue
operation in case the analog input signal is lost.
The drive generates alarm
(2007) and freezes the speed to the level the drive was
operating at. The speed is determined by the average
speed over the previous 10 seconds. Alarm limit is defined
by parameter 3021 AI1 FAULT LIMIT
LIMIT.
WARNING! Make sure that it is safe to continue
operation in case the analog input signal is lost.
2908 USER MWh
2907 USER MWh TRIG
11 REFERENCE
40 PROCESS PID SET
or 42 EXT / TRIM
and 3022 AI2 FAULT LIMIT
AI1 LOSS (0007) / AI2 LOSS
/ 3022 AI2 FAULT
AI1 LOSS (2006) /
7. Alarm limit is defined by
/ 3022 AI2 FAULT
AI1 LOSS (2006) /
/ 3022 AI2 FAULT
Def/FbEq
0.0 MWh
1 =
0.1 MWh
0.0 MWh
has been
1 =
0.1 MWh
NOT SEL
1,
PID) and the
set the
0
(0008) 1
LIMIT.
AI2 LOSS 2
LIMIT.
AI2 LOSS 3