Danfoss VLT 5000 Series Instruction Manual page 114

Jog is used for overriding the output frequency to the
jog frequency set in parameter 213. The ramp time can
be set in parameter 211. Jog is not active if a stop
command has been given (start-disable). Jog over-
rides stop (operating command, group 2).
Preset reference, on is used for shifting between ex-
ternal reference and preset reference. It is assumed
that External/preset [2] has been selected in parameter
214. Logic '0' = external references active; logic '1' =
one of the four preset references is active in accord-
ance with the table below.
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. 1 0
Preset ref. 2 0
Preset ref. 3 1
Preset ref. 4 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
NOTE
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 con-
trol of the up/down speed is desired (motor potentiom-
eter). 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 ref-
erence or the output frequency will increase. Follow
ramp 2 (parameter 209) in the range 0 - f
= factory setting, () = display text, [] = value for use in communication via serial communication port
MG.51.C5.22 - VLT is a registered Danfoss trademark.
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
Pulses (logic `1` minimum high for 3 ms and a mini-
mum pause of 3 ms) will lead to a change of speed of
0.1% (reference) or 0.1 Hz (output frequency).
Example:
No speed change
Speed down
Speed up
Speed down
The speed reference frozen via the control panel can
be changed even if the frequency converter has stop-
Preset ref. lsb
ped. The frozen reference will be remembered in case
0
of a mains drop-out.
1
0
Selection of Setup, lsb and Selection of Setup,
1
msb enables a choice of one of the four Setups; how-
ever, 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:
Setup 1
Setup 2
Setup 3
Setup 4
No speed change
Speed down
Speed up
Speed down
Catch-up/Slow-down is selected if the reference value
is to be increased or reduced by a programmable per-
centage value set in parameter 219.
Unchanged speed
Reduced by %-value
Increased by %-value
Reduced by %-value
Ramp 2 is selected if a change between ramp 1 (pa-
rameters 207-208) and ramp 2 (209-210) is desired.
Logic '0' leads to ramp 1, while logic '1' leads to ramp
.
MIN
2.
®
VLT 5000 Series
.
MIN
Terminal Freeze ref./
(16) (17) Freeze output
0 0
0 1
1 0
1 1
Selection of Setup Freeze ref/
(32)msb (33)lsb Freeze output
0 0
0
0 1 0
1 0 0
1 1 0
0 0 1
0 1 1
1 0 1
1 1 1
Slow-down
0
1
0
1
1
1
1
1
Catch-up
0
0
1
1
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