Danfoss VLT AQUA Drive FC 202 Programming Guide

3.19 Parameters 22-** Application Functions
3.19.1 22-0* Miscellaneous
This group contains parameters used for monitoring water/
wastewater applications.
22-00 External Interlock Delay
Range: Function:
0 s* [0 - 600
s]
Only relevant if 1 of the digital inputs in
parameter group 5-1* Digital Inputs has been
programmed for [7] External Interlock. The
22-00 External Interlock Delay
Range: Function:
external interlock timer introduces a delay after
the signal has been removed from the digital
input programmed for external interlock, before
reaction takes place.
22-01 Power Filter Time
Range: Function:
0.50 s* [0.02 - 10 s]
3.19.2 22-2* No-Flow Detection
Illustration 3.63 Signal Flow Chart
The VLT
®
AQUA Drive FC 202 includes functions that
detect if the load conditions in the system allow the motor
to be stopped:
•
Low-power detection.
•
Low-speed detection.
1 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) are:
•
No action.
•
Warning.
•
Alarm.
•
Sleep mode.
No-ow detection
This function is used to detect a no-ow situation in pump
systems where all valves can be closed. It 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 Description Programming Guide
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Danfoss VLT AQUA Drive FC 202 Specifications

General

Brand	Danfoss
Model	VLT AQUA Drive FC 202
Category	DC Drives
Language	English