Danfoss VLT HVAC Design Guide

Set term 27 to No Operation (par. 5-12 Terminal 27 Digital Input )
Set Preset reference 0 to first preset speed (par. 3-10
Preset Reference [0]) in percentage of Max reference speed (par. 3-03 Maximum Reference ). Ex.:
60%
Set preset reference 1 to second preset speed (par. 3-10
Preset Reference [1] Ex.: 0 % (zero).
Set the timer 0 for constant running speed in par. 13-20
SL Controller Timer [0]. Ex.: 2 sec.
Set Event 1 in par. 13-51
SL Controller Event [1] to True [1]
Set Event 2 in par. 13-51
SL Controller Event [2] to On Reference [4]
Set Event 3 in par. 13-51
SL Controller Event [3] to Time Out 0 [30]
Set Event 4 in par. 13-51
SL Controller Event [1] to False [0]
Set Action 1 in par. 13-52
SL Controller Action [1] to Select preset 0 [10]
Set Action 2 in par. 13-52
SL Controller Action [2] to Start Timer 0 [29]
Set Action 3 in par. 13-52
SL Controller Action [3] to Select preset 1 [11]
Set Action 4 in par. 13-52
SL Controller Action [4] to No Action [1]
Set the Smart Logic Control in par. 13-00 SL Controller Mode to ON.
Start / stop command is applied on terminal 18. If stop signal is applied the frequency converter will ramp down and go into free mode.
6 Application Examples VLT
®
HVAC Drive Design Guide
122 MG.11.B9.02 - VLT
®
is a registered Danfoss trademark
6

Danfoss VLT HVAC Specifications

General

Enclosure Rating	IP20, IP21, IP54, IP55, IP66
Storage Temperature Range	-25°C to +70°C
Output Voltage Range	0-100% of supply voltage
Communication Protocols	Modbus RTU, BACnet, Ethernet/IP, Profibus DP
Ambient Temperature Range	-10°C to +50°C (without derating)
Relative Humidity	5% to 95% non-condensing
Altitude	Up to 1000 m without derating
Cooling Method	Air cooled
Application	HVAC systems, Pumps, Fans, Compressors
Voltage Range	200-240 V, 380-500 V, 525-600 V
Frequency Range	0 Hz to 590 Hz