Danfoss vlt FC 102 Programming Guide

3.20.1 22-2* No-Flow Detection
Detection
timer
Low speed
detected
Low Power
detected
Warning
Alarm
External
sleep mode
command
Min run
timer
Min sleep
timer
Sleep
mode
Cascade
controller
(destaging
command)
speed detection
Sleep mode
O
No ow/low
130BA252.15
1
P 22-22
P 22-24
1
P 22-40
P 22-41
P 22-21
P 25-26
P 22-23
Illustration 3.56 No-ow Detection
The frequency converter includes functions for detecting if the load conditions in the system allow the motor to be
stopped:
•
Low-power detection.
•
Low-speed detection.
One of these 2 signals must be active for a set time (parameter 22-24 No-Flow Delay) before selected action takes place.
Possible actions to select (parameter 22-23 No-Flow Function):
•
No action
•
Warning
•
Alarm
•
Sleep mode
No-ow detection
This function is used for detecting a no-ow situation in pump systems where all valves can be closed. Can be used both
when controlled by the integrated PI controller in the frequency converter or an external PI controller. Program the actual
conguration in parameter 1-00 Conguration Mode.
Conguration mode for
•
Integrated PI controller: Closed loop.
•
External PI controller: Open loop.
Parameter Descriptions
VLT
®
HVAC Drive FC 102
198 Danfoss A/S © 10/2019 All rights reserved. M0010001
33

Danfoss vlt FC 102 Specifications

General

Brand	Danfoss
Model	vlt FC 102
Category	DC Drives
Language	English