Danfoss VLT HVAC Series User Manual

Counter 00 will always contain the oldest data. A counter will cover a period from XX:00 to XX:59 if hours or 00:00 to 23:59 if days.
If logging either the last hours or last days, the counters will shift contents at XX:00 every hour or at 00:00 every day.
The counter with the highest index will always be subject to updates (containing data for the current hour since XX:00 or the current day since 00:00).
The contents of counters can be displayed as bars on LCP. Select
Quick Menu , Loggings , Energy Log: Trending Continued Bin / Trending Timed Bin /
Trending Comparison
.
23-50 Energy Log Resolution
Option: Function:
Select the desired type of period for logging of consumption. Hour of Day [0] , Day of Week [1] or
Day of Month [2]. The counters contain the logging data from the programmed date/time for start
(par.23-51
Period Start ) and the numbers of hours/days as programmed for (par.23-50 Energy Log
Resolution
).
The logging will start on the date programmed in par.23-51
Period Start , and continue until one
day/week/month has gone. Last 24 Hours [5], Last 7 Days [6] or Last 5 Weeks [7]. The counters
contain data for one day, one week or five weeks back in time and up to the current time.
The logging will start at the date programmed in par.23-51
Period Start . In all cases, the period split
will refer to operating hours (time where adjustable frequency drive is powered up).
[0] Hour of Day
[1] Day of Week
[2] Day of Month
[5] * Last 24 Hours
[6] Last 7 Days
[7] Last 5 Weeks
NOTE!
The adjustable frequency drive has no back-up of the clock function and the set date/time will reset to default (2000-01-01 00:00)
after a power-down unless a Real Time Clock module with back-up is installed. Consequently, the logging will be stopped until date/
time is readjusted in par.0-70
Set Date and Time . In par.0-79 Clock Fault , it is possible to program for a warning in case the clock has
not been set properly, e.g., after a power-down.
3 Parameter Description VLT
®
HVAC Drive Programming Guide
3-220 MG.11.C6.22 - VLT
®
is a registered Danfoss trademark
3

Danfoss VLT HVAC Series Specifications

General

Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short circuit
Communication Interfaces	Profibus, Ethernet
Cooling Method	Forced convection
Ambient Temperature	-10°C to +40°C
Enclosure Rating	IP20, IP21, IP55
Output Voltage	0 - 100% of supply voltage