Danfoss FC 300 Programming Manual page 144

Parameter Descriptions
3.16.3 15-2* Historic Log
View up to 50 logged data items via the array parameters in
this par. 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
3 3
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:
0 N/A [0 - 255 N/A] View the event type of the logged events.
*
15-21 Historic Log: Value
Array [50]
Range:
0 N/ [0 -
A 2147483647 N/
*
A]
144
FC 300 Programming Guide
Function:
Function:
View the value of the logged event.
Interpret the event values according to
this table:
MG.33.M9.02 - VLT
15-21 Historic Log: Value
Array [50]
Range:
15-22 Historic Log: Time
Array [50]
Range:
0 ms [0 - 2147483647
*
ms]
®
is a registered Danfoss trademark
Function:
Digtal input Decimal value. See
par. 16-60 Digital Input
for description after
converting to binary
value.
Digital output Decimal value. See
(not par. 16-66 Digital Output
monitored in [bin] for description after
this SW converting to binary
release) value.
Warning word Decimal value. See
par. 16-92 Warning Word
for description.
Alarm word Decimal value. See
par. 16-90 Alarm Word for
description.
Status word Decimal value. See
par. 16-03 Status Word
for description after
converting to binary
value.
Control word Decimal value. See
par. 16-00 Control Word
for description.
Extended Decimal value. See
status word par. 16-94 Ext. Status
Word for description.
Function:
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.