Precise start/stop is selected to obtain a high degree
of accuracy when a start and stop command is repea-
ted.
Pulse reference is selected if the reference signal ap-
plied is a pulse train (frequency). 0 Hz corresponds to
parameter 204 Minimum reference, Ref
MIN
. The fre-
quency, set in parameter 327 Pulse reference/feed-
back, corresponds to parameter 205 Maximum refer-
ence Ref
MAX
.
Pulse feedback is selected if the feedback signal used
is a pulse train (frequency). In parameter 327 Pulse
reference/feedback, the maximum pulse feedback fre-
quency is set.
Pulse input is selected if a specific number of pulses
must lead to a Precise stop; see parameter 343 Precise
stop and parameter 344 Counter value.
Selection of Set-up, lsb and Selection of Set-up, msb
provides the option of selecting one of the four set-ups.
It is, however, a condition that parameter 004 is set to
Multi-set-up.
Reset and start can be used as a start function. If 24 V
are connected to the digital input, this will cause the
adjustable frequency drive to reset, and the motor will
ramp up to the preset reference.
Pulse counter start is used to start a counter stop se-
quence with a pulse signal. The pulse width must be
at least 14 ms and not longer than the count period.
See also parameter 343 and the instruction,
MI28CXYY.
308 Terminal 53, analogue input voltage
(AI [V]53FUNCT.)
Value:
No function (NO OPERATION) [0]
Reference (reference) [1]
Feedback (feedback) [2]
Wobble (WOBB.DELTA FREQ [%]) [10]
Function:
In this parameter, it is possible to select the function
required to be connected to terminal 53. Scaling of the
input signal is made in parameter 309 Terminal 53, min.
scaling and parameter 310 Terminal 53, max. scaling.
Description of choice:
No function [0]. Is selected if the adjustable frequency
drive is not to react to signals connected to the termi-
nal. Reference [1]. If this function is selected, the ref-
erence can be changed by means of an analog
reference signal. If reference signals are connected to
more than one input, these reference signals must be
added up.If a voltage feedback signal is connected,
select Feedback [2] on terminal 53.
Wobble [10]
The delta frequency can be controlled by the analog
input. If WOBB.DELTA FREQ is selected as analog in-
put (par. 308 or par. 314) the value selected in par. 702
equals 100 % analog input.
Example: Analog input = 4-20 mA, Delta freq. par. 702
= 5 Hz • 4 mA = 0 Hz and 20 mA = 5 Hz. If this function
is chosen, see Wobble Instruction MI28JXYY for fur-
ther information.
309 Terminal 53 Min. scaling
(AI 53 SCALE LOW)
Value:
0.0 - 10.0 Volt
0.0 Volt
Function:
This parameter is used for setting the signal value that
is to correspond to the minimum reference or the min-
imum feedback, parameter 204 Minimum reference,
Ref
MIN
/ 414 Minimum feedback, FB
MIN
.
Description of choice:
Set the required voltage value. For reasons of accu-
racy, compensation should be made for voltage loss
in long signal cables. If the Time out function is to be
used (parameter 317 Time out and 318 Function after
time out), the value set must be higher than 1 Volt.
310 Terminal 53 Max. scaling
(AI 53 SCALE HIGH)
Value:
0 - 10.0 Volt
10.0 Volt
Function:
This parameter is used for setting the signal value that
is to correspond to the maximum reference value or
VLT
®
2800 Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
62 MG.27.A2.22 - VLT
®
is a registered Danfoss trademark
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