Danfoss VLT User Manual

20-04 Feedback 2 Conversion
Option: Function:
See par.20-01 Feedback 1 Conversion for details.
[0] * Linear
[1] Square root
[2] Pressure to temperature
20-06 Feedback 3 Source
Option: Function:
See par.20-00 Feedback 1 Source for details.
[0] * No function
[1] Analog input 53
[2] Analog input 54
[3] Pulse input 29
[4] Pulse input 33
[7] Analog input X30/11
[8] Analog input X30/12
[9] Analog Input X42/1
[10] Analog Input X42/3
[11] Analog Input X42/5
[100] Bus feedback 1
[101] Bus feedback 2
[102] Bus feedback 3
20-07 Feedback 3 Conversion
Option: Function:
See par.20-01 Feedback 1 Conversion for details.
[0] * Linear
[1] Square root
[2] Pressure to temperature
20-20 Feedback Function
Option: Function:
This parameter determines how the three possible feedbacks will be used to control the output
frequency of the adjustable frequency drive.
[0] Sum
Sum [0] sets up the PID controller to use the sum of Feedback 1, Feedback 2 and Feedback 3 as
the feedback.
NOTE!
Any unused feedbacks must be set to
No Function in par.20-00 Feedback 1
Source
, par.20-03 Feedback 2 Source , or par.20-06 Feedback 3 Source .
The sum of Setpoint 1 and any other references that are enabled (see par. group 3-1*) will be used
as the PID controller’s setpoint reference.
VLT
®
HVAC Drive Instruction Manual
6 How to program the adjustable frequency
drive
MG.11.A9.22 - VLT
®
is a registered Danfoss trademark 6-45
6

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)