Danfoss VLT Programming Guide

3.18 Main Menu - FC Closed Loop - Group 20
3.18.1 20-** FC Closed Loop
This parameter group is used for configuring the closed loop PID Controller, that controls the output frequency of the frequency converter.
3.18.2 20-0* Feedback
This parameter group is used to configure the feedback signal for the frequency converter’s closed loop PID Controller. Whether the frequency converter
is in Closed Loop Mode or Open Loop Mode, the feedback signals can also be shown on the frequency converter’s display, be used to control a frequency
converter analog output, and be transmitted over various serial communication protocols.
20-00 Feedback 1 Source
Option: Function:
Up to three different feedback signals can be used to provide the feedback signal for the frequency
converter’s PID Controller.
This parameter defines which input will be used as the source of the first feedback signal.
Analog input X30/11 and Analog input X30/12 refer to inputs on the optional General Purpose I/O
board.
[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
VLT
®
HVAC Drive Programming Guide 3 Parameter Description
MG.11.C9.02 - VLT
®
is a registered Danfoss trademark 175
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)