Danfoss VLT FCM Series Manual page 55

Example:
Terminal
2-5
No speed change 0
Speed down 0
Speed up 1
Speed down 1
Selection of Setup, enables a choice of one of
the two Setups; however, this presupposes that
parameter 004 has been set to Multi Setup.
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.
Unchanged speed
Reduced by %-value
Increased by %-value
Reduced by %-value
Preset reference enables a choice of one of the
two preset references, in accordance with the table
in parameter 215 and 216. To be active, Preset
reference, on has to be selected.
Preset reference is used for shifting between external
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 two preset references is active.
Precise stop corrects the ramp-down time to obtain
a high repetitive accuracy of the stopping point.
Pulse reference is selected if a pulse sequence
(frequency) of 0 Hz is used, corresponding to Ref
parameter 204. The frequency is set in parameter
327, corresponding to Ref
Pulse feedback is selected if a pulse sequence
(frequency) is selected as a feedback signal.
See also parameter 327.
Analogue reference is selected to enable change of
reference by means of an analogue reference signal.
If other inputs are connected, these are added
up, taking account of their signs.
Analogue feedback is selected if closed loop regulation
with an analogue signal is used.
Reset and start is used for activating start at
the same time as reset.
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.03.H3.02 - VLT is a registered Danfoss trademark
Freeze ref./
2-5 Freeze output
0 1
1 1
0 1
1 1
Slow-down Catch-up
0 0
1 0
0 1
1 1
,
MIN
.
MAX
®
VLT FCM Series
Freeze reference and start, both a START and a
FREEZE REFERENCE command will be initiated.
When using SPEED UP/SPEED DOWN both FREEZE
REFERENCE and START must be activated. By
implementing this feature a digital input can be spared.
Ramp 2, is selected if a shift between ramp 1
(parameters 207-208) and ramp 2 (parameters
209-210) is required. Logic "0" leads to ramp
1 and logic "1" leads to ramp 2.
Start-ref bit 1,2 and 3, makes it possible to select
which REF RESET (1-7) is to be used. The REF
PRESET (1-7) are set in parameters 241 to 247.
Par. No Fixed speed
- - - Stand by
241 REF RESET 1
242 REF RESET 2
243 REF RESET 3
244 REF RESET 4
245 REF RESET 5
246 REF RESET 6
247 REF RESET 7
If at least one of the 3 digital inputs is activated the FCM
has start signal. The 7 possible input combinations will
than decide which preset speed is to be used.
If only 1 or 2 digital inputs are used respectively 1 or 3
speeds can be chosen after above shown principle.
If 2 set-ups are used up to 14 preset speeds can be
chosen by means of 4 digital inputs. The P241 and
P242 settings will be mirrored into P215 and P216.
Ex.
Digital inputs 2,3 and 4: P332 [choice 35
selected], P333 [choice 36 selected] and P334
[choice 37 selected]
Input combination on the digital inputs 2,3 and 4: "010".
This means REF PRESET 2 will be the preset speed.
Scaling of the input signal is effected in
parameters 338 and 339.
NB!:
If Reference or Feedback has been selected
on more than one terminal, these signals
will be added with signs.
336 Terminal 1, min. scaling
(AI 1 SCALE LOW)
Value:
0.0 - 20.0 mA
0.0 mA
START REF BIT
321
000
001
010
011
100
101
110
111
[0 - 200]
[0]
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