Danfoss vlt aqua Programming Guide

- Alarm
No Flow Detection must be enabled (par. 22-23,
No Flow Function ) and commissioned (par. 22-3*,
No Power Tuning ).
22-20 Low Power Auto Set-up
Option: Function:
[0]
*
Off
[1] Enabled When set for
Enabled , an auto set up sequence is activated,
automatically setting speed to approx. 50 and 85% of rated
motor speed (par. 4-13/14,
Motor Speed High Limit ). 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
.
NB!
Auto Set Up must be done when the system has
reached normal operating temperature!
NB!
It is important that the par. 4-13/14,
Motor Speed
High Limit
is set to the max. operational speed of
the motor!
It is important to do the Auto Set-up before con-
figuring 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
Torque Characteristics , par. 1-03, as for operation
after the tuning.
22-21 Low PowerDetection
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!
VLT
®
AQUA Drive Programming Guide 2. Parameter Description
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark 197
2

Danfoss vlt aqua Specifications

General

Supply Voltage	200-240V, 380-500V, 525-600V
Enclosure	IP20
Features	Energy optimization
Approvals	CE, UL, cUL
Input Voltage Range	200-240V, 380-500V, 525-600V
Output Voltage Range	0 to supply voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Short circuit, Ground fault
Communication Interfaces	PROFIBUS
Cooling Method	Air-cooled