Danfoss vlt aqua Programming Guide

1-63 Slip Compensation Time Constant
Range: Function:
0.10s
*
[0.05 - 5.00 s] Enter the slip compensation reaction speed. A high value results
in slow reaction, and a low value results in quick reaction. If low-
frequency resonance problems arise, use a longer time setting.
1-64 Resonance Dampening
Range: Function:
100%
*
[0 - 500 %] Enter the resonance dampening value. Set par. 1-64 and par.
1-65
Resonance Dampening Time Constant to help eliminate
high-frequency resonance problems. To reduce resonance os-
cillation, increase the value of par. 1-64.
1-65 Resonance Dampening Time Constant
Range: Function:
5
msec. *
[5 - 50 msec.] Set par. 1-64 Resonance Dampening and par. 1-65 to help elim-
inate high-frequency resonance problems. Enter the time con-
stant that provides the best dampening.
2.3.6. 1-7* Start Adjustments
Parameters for setting special motor start features.
1-71 Start Delay
Range: Function:
0.0s
*
[0.0 - 120.0 s] The function selected in par. 1-80 Function at Stop is active in
the delay period.
Enter the time delay required before commencing acceleration.
1-73 Flying Start
Option: Function:
This function makes it possible to catch a motor, in both direc-
tions, which is spinning freely due to a mains drop-out.
[0]
*
Disabled No function
[1] Enabled Enables frequency converter to “catch” and control a spinning
motor.
When par. 1-73 is enabled, par. 1-71
Start Delay has no function.
Search direction for flying start is linked to the setting in par. 4-10, Motor Speed Direction.
Clockwise [0]: Flying start search in clockwise direction. If not successful, a DC brake is carried
out.
Both Directions [2]: The flying start will first make a search in the direction determined by the last
reference (direction). If not finding the speed it will make a search in the other direction. If not
successful, a DC brake will be activated in the time set in par. 2-02, Braking Time. Start will then
take place from 0 Hz.
2. Parameter Description VLT
®
AQUA Drive Programming Guide
52 MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
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