Danfoss vlt aqua Programming Guide

Preset ref. bit 2 1 0
Preset ref. 0 0 0 0
Preset ref. 1 0 0 1
Preset ref. 2 0 1 0
Preset ref. 3 0 1 1
Preset ref. 4 1 0 0
Preset ref. 5 1 0 1
Preset ref. 6 1 1 0
Preset ref. 7 1 1 1
[19] Freeze ref Freezes actual reference. The frozen reference is now the point
of enable/condition for Speed up and Speed down to be used.
If Speed up/down is used, the speed change always follows
ramp 2 (par. 3-51 and 3-52) in the range 0 - par. 3-03
Maximum
Reference
.
[20] Freeze output Freezes actual motor frequency (Hz). The frozen motor fre-
quency is now the point of enable/condition for Speed up and
Speed down to be used. If Speed up/down is used, the speed
change always follows ramp 2 (par. 3-51 and 3-52) in the range
0 - par. 1-23
Motor Frequency .
NB!
When Freeze output is active, the frequency con-
verter cannot be stopped via a low ‘start [13]’
signal. Stop the frequency converter via a terminal
programmed for Coasting inverse [2] or Coast and
reset, inverse [3].
[21] Speed up For digital control of the up/down speed is desired (motor po-
tentiometer). Activate this function by selecting either Freeze
reference or Freeze output. When Speed up is activated for less
than 400 msec. the resulting reference will be increased by 0.1
%. If Speed up is activated for more than 400 msec. the result-
ing reference will ramp according to Ramp 1in par. 3-41.
[22] Speed down Same as Speed up [21].
[23] Set-up select bit 0 Selects one of the four set-ups. Set par. 0-10
Active Set-up to
Multi Set-up.
[24] Set-up select bit 1 Same as Set-up select bit 0 [23].
(Default Digital input 32)
[32] Pulse input Select Pulse input when using a pulse sequence as either ref-
erence or feedback. Scaling is done in par. group 5-5*.
[34] Ramp bit 0 Select which ramp to use. Logic “0” will select ramp 1 while logic
“1” will select ramp 2.
[36] Mains failure inverse Activates par. 14-10
Mains Failure . Mains failure inverse is active
in the Logic “0” situation.
[52] Run Permissive The input terminal, for which the Run permissive has been pro-
grammed must be logic “1” before a start command can be
accepted. Run permissive has a logic ‘AND’ function related to
the terminal which is programmed for
START [8], Jog [14] or
Freeze Output [20], which means that in order to start running
2. Parameter Description VLT
®
AQUA Drive Programming Guide
80 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