Danfoss VLT 5000 Series Operating Instructions

VLT
®
5000 Series
Preset reference, lsb and Preset reference, msb
enables a choice of one of the four preset references,
in accordance with the table below.
Preset ref. msb Preset ref. lsb
Preset ref. 1 0 0
Preset ref. 2 0 1
Preset ref. 3 1 0
Preset ref. 4 1 1
Freeze reference - freezes the 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 (parameters 209/210)
in the range 0 - Ref
MAX
.
Freeze output - freezes the actual motor
frequency (Hz). The frozen motor frequency 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 (parameters 209/210)
in the range 0 - f
M,N
.
NB!:
If Freeze output is active, the frequency
converter cannot be stopped via terminals
18 and 19, but only via terminal 27 (to
be programmed for Coasting stop, inverse [0] or
Reset and coasting stop, inverse [1]).
After Freeze output, the PID integrators are reset.
Speed up and Speed down are selected if digital
control of the up/down speed is desired (motor
potentiometer). This function is only active if Freeze
reference or Freeze output has been selected. As long
as there is a logic ‘1‘ on the terminal selected for speed
up, the reference or the output frequency will increase.
Follow ramp 2 (parameter 209) in the range 0 - f
MIN
.
As long as there is a logic ‘1‘ on the terminal
selected for speed down, the reference or the
output frequency will be reduced. Follow ramp 2
(parameter 210) in the range 0 - f
MIN
.
Pulses (logic ‘1‘ minimum high for 3 ms and a minimum
pause of 3 ms) will lead to a change of speed of 0.1%
(reference) or 0.1 Hz (output frequency).
Example:
Ter minal Fre eze ref./
(16) (17) Freeze output
No speed change 0 0 1
Speed down 0 1 1
Speed up 1 0 1
Speed down 1 1 1
The speed reference frozen via the control panel
can be changed even if the frequency converter has
stopped. The frozen reference will be remembered
in case of a mains drop-out.
Selection of Setup, lsb and Selection of Setup,
msb enables a choice of one of the four Setups;
however, this presupposes that parameter 004
has been set at Multi Setup.
Selection of Setup, msb/Speed up and Selection
of Setup, lsb/Speed down - together with
the use of Freeze reference or Freeze output -
enable up/down speed change.
The selection of Setup occurs in accordance
with the below verification table:
Selection of Setup Freeze ref/
(32)msb (33)lsb Freeze output
Setup 1 0 0 0
Setup 2 0 1 0
Setup 3 1 0 0
Setup 4 1 1 0
No speed change 0 0 1
Speed down 0 1 1
Speed up 1 0 1
Speed down 1 1 1
Catch-up/Slow-down is selected if the reference
value is to be increased or reduced by a programmable
percentage value set in parameter 219.
Slow-down Catch-up
Unchanged speed 0 0
Reduced by %-value 1 0
Increased by %-value 0 1
Reduced by %-value 1 1
Ramp 2 is selected if a change between ramp 1
(parameters 207-208) and ramp 2 (209-210) is desired.
Logic ’0’ leads to ramp 1, while logic ’1’ leads to ramp 2.
Mains failure inverted is to be selected if parameter
407 Mains failure and/or parameter 408 Quick
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.51.A9.02 - VLT is a registered Danfoss trademark
124

Danfoss VLT 5000 Series Specifications

General

Brand	Danfoss
Model	VLT 5000 Series
Category	DC Drives
Language	English