Historic Log; Historic Log: Event; Historic Log: Value; Historic Log: Time - Danfoss VLT Programming Manual

®
VLT HVAC Drive Programming Guide

3.15.4 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
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
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]

15-21 Historic Log: Value

Array [50]
Range:
0 N/A* [0 - 2147483647 N/A]

15-22 Historic Log: Time

Array [50]
Range:
0 ms* [0 - 2147483647 ms]
15-23 Historic Log: Date and Time
Range:
Application [Application dependant]
dependent*
event
occurs (not to be confused with SLC events).
Function:
View the event type of the logged events.
Function:
View the value of the logged event. Interpret the event values according to this table:
Digtal input
Digital output (not monitored in
this SW release)
Warning word
Alarm word
Status word
Control word
Extended status word
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.
Function:
Array parameter; Date & Time 0 - 49: This parameter shows at which time the logged event oc-
curred.
MG.11.C9.02 - VLT ® is a registered Danfoss trademark
3 Parameter Description
Events
in this context are defined as a change in one
events
occur (maximum once every
Digital Input
Decimal value. See par. 16-60
after converting to binary value.
Digital Output [bin]
Decimal value. See par. 16-66
scription after converting to binary value.
Warning Word
Decimal value. See par. 16-92
tion.
Alarm Word
Decimal value. See par. 16-90
Status Word
Decimal value. See par. 16-03
after converting to binary value.
Control Word
Decimal value. See par. 16-00
Decimal value. See par. 16-94 Ext. Status Word
scription.
3
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