Danfoss VLT Programming Guide

23-13 Maintenance Time Interval
Range: Function:
1 h* [1 - 2147483647 h] Set the interval associated with the current Preventive Maintenance Event. This parameter is only
used if
Running Hours [1] or Operating Hours [2] is selected in par. 23-12 Maintenance Time
Base
. The timer is reset from par. 23-15 Reset Maintenance Word .
Example:
A Preventive Maintenance Event is set up Monday at 8:00. Par. 23-12
Maintenance Time Base is
Operating hours [2] and par. 23-13 Maintenance Time Interval is 7 x 24 hours=168 hours. Next
Maintenance Event will be indicated the following Monday at 8:00. If this Maintenance Event is not
reset until Tuesday at 9:00, the next occurrence will be the following Tuesday at 9:00.
23-14 Maintenance Date and Time
Range: Function:
Application
dependent*
[Application dependant] Set the date and time for next maintenance occurrence if the Preventive Maintenance Event is based
on date/time. Date format depends on the setting in par. 0-71
Date Format while the time format
depends on the setting in par. 0-72
Time Format .
NB!
The frequency converter 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. 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.
The time set must be at least one hour from the actual time!
NB!
When mounting an Analog I/O MCB 109 option card, a battery back up of the
date and time is included.
23-15 Reset Maintenance Word
Option: Function:
Set this parameter to Do reset [1] to reset the Maintenance Word in par. 16-96 Maintenance
Word
and reset the message displayed in the LCP. This parameter will change back to Do not re-
set
[0] when pressing OK.
[0] * Do not reset
[1] Do reset
NB!
When messages are reset - Maintenance Item, Action and Maintenance Date/Time are not cancelled. Par. 23-12
Maintenance Time
Base
is set to Disabled [0].
23-16 Maintenance Text
Range: Function:
0 N/A* [0 - 0 N/A]
3.21.3 23-5* Energy Log
The frequency converter is continuously accumulating the consumption of the motor controlled, based on the actual power yielded by the frequency
converter.
VLT
®
HVAC Drive Programming Guide 3 Parameter Description
MG.11.C9.02 - VLT
®
is a registered Danfoss trademark 223
3

Danfoss VLT Specifications

General

Frequency	50/60 Hz
Enclosure	IP20, IP21, IP55, IP66
Series	VLT
Control Technique	Flux Vector Control
Output Voltage	0-Vinput
Control Method	Fieldbus
Communication Interface	PROFIBUS, CANopen
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Cooling Method	Liquid Cooled
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% non-condensing
Altitude	Up to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating
Operating Temperature	-10°C to +50°C (14°F to 122°F)