Danfoss VLT AQUA Drive FC 202 Operating Instructions

22-20 Low Power Auto Set-up
Option: Function:
When set for Enabled , an auto set up sequence is activated, automatically setting speed to approx.
50 and 85% of rated motor speed (par. 4-13
Motor Speed High Limit [RPM] , par. 4-14 Motor Speed
High Limit [Hz]
). At those two speeds, the power consumption is automatically measured and stored.
Before enabling Auto Set Up:
1. Close valve(s) in order to create a no flow condition
2. The frequency converter must be set for Open Loop (par. 1-00
Configuration Mode ).
Note that it is important also to set par. 1-03 Torque
Characteristics .
[0] * Off
[1] Enabled
NB!
Auto Set Up must be done when the system has reached normal operating temperature!
NB!
It is important that the par. 4-13
Motor Speed High Limit [RPM] or par. 4-14 Motor Speed High Limit [Hz] is set to the max. operational
speed of the motor!
It is important to do the Auto Set-up before configuring the integrated PI Contoller as settings will be reset when changing from Closed
to Open Loop in par. 1-00
Configuration Mode .
NB!
Carry out the tuning with the same settings in par. 1-03 Torque
Characteristics , as for operation after the tuning.
22-21 Low Power Detection
Option: Function:
[0] * Disabled
[1] Enabled If selecting Enabled, the Low Power Detection commissioning must be carried out in order to set
the parameters in group 22-3* for proper operation!
22-22 Low Speed Detection
Option: Function:
[0] * Disabled
[1] Enabled Select Enabled for detecting when the motor operates with a speed as set in par. 4-11
Motor Speed
Low Limit [RPM]
or par. 4-12 Motor Speed Low Limit [Hz] .
22-23 No-Flow Function
Option: Function:
Common actions for Low Power Detection and Low Speed Detection (Individual selections not pos-
sible).
[0] * Off
[1] Sleep Mode
[2] Warning Messages in the Local Control Panel display (if mounted) and/or signal via a relay or a digital output.
[3] Alarm The frequency converter trips and motor stays stopped until reset.
VLT
®
AQUA Drive
Operating Instructions
8. How to programme the frequency converter
MG.20.M5.02 - VLT
®
is a registered Danfoss trademark 97
8

Danfoss VLT AQUA Drive FC 202 Specifications

General

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