[36]
Digital input DI29
[37]
Digital input DI32
[38]
Digital input DI33
[50]
Comparator 4
[51]
Comparator 5
[60]
Logic rule 4
[61]
Logic rule 5
Select the trigger event. When the trigger event occurs, a win-
dow is applied to freeze the log. The log will then retain a
specified percentage of samples before the occurrence of the
trigger event (par. 15-14).
15-13 Logging Mode
Option:
Function:
[0]
*
Log always
[1]
Log once on trigger
Select
Log always
[0] for continuous logging.
Select
Log once on trigger
[1] to conditionally start and stop
logging using par. 15-12 and par. 15-14.
15-14 Samples Before Trigger
Range:
Function:
50
*
[0 - 100]
Enter the percentage of all samples prior to a trigger event
which are to be retained in the log. See also par. 15-12 and par.
15-13.
2.14.4. Historic Log,15-2*
View up to 50 logged data items via the array parameters in this parameter group. For all pa-
rameters in the group, [0] is the most recent data and [49] the oldest data. Data is logged every
time an
event
occurs (not to be confused with SLC events).
Events
in this context are defined as
a change in one of the following areas:
1.
Digital input
2.
Digital outputs (not monitored in this SW release)
3.
Warning word
4.
Alarm word
5.
Status word
6.
Control word
7.
Extended status word
Events
are logged with value, and time stamp in msec. The time interval between two events
depends on how often
events
occur (maximum once every scan time). Data logging is continuous
but if an alarm occurs, the log is saved and the values can be viewed on the display. This feature
is useful, for example when carrying out service following a trip. View the historic log contained
in this parameter via the serial communication port or via the display.
2. Parameter Description
VLT
®
AQUA Drive Programming Guide
156
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
2
