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
and
3.15.3 15-2* Historic Log
View up to 50 logged data items via the array parameters
in this parameter group. For all parameters 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.
15-20 Historic Log: Event
Array [50]
Range:
Function:
0
*
[0 - 255 ]
View the event type of the logged events.
15-21 Historic Log: Value
Array [50]
Range:
Function:
0
*
[0 -
2147483647 ]
View the value of the logged event.
Interpret the event values according to
this table:
15-21 Historic Log: Value
Array [50]
Range:
Function:
Digtal input
Decimal value. See
for
description after
converting to binary
value.
Digital output
(not
monitored in
this SW
release)
Decimal value. See
16-66 Digital Output [bin]
for description after
converting to binary
value.
Warning word Decimal value. See
16-92 Warning Word
for
description.
Alarm word
Decimal value. See
16-90 Alarm Word
for
description.
Status word
Decimal value. See
for
description after
converting to binary
value.
Control word Decimal value. See
for
description.
Extended
status word
Decimal value. See
16-94 Ext. Status Word
for
description.
15-22 Historic Log: Time
Array [50]
Range:
Function:
0 ms
*
[0 - 2147483647
ms]
View the time at which the logged
event occurred. Time is measured in
ms since frequency converter start.
The max. value corresponds to
approx. 24 days which means that the
count will restart at zero after this
time period.
15-23 Historic Log: Date and Time
Range:
Function:
Size related
*
[ 0 - 0 ]
Parameter Description
VLT
®
HVAC Drive Programming Guide
116
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®
is a registered Danfoss trademark
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