Danfoss VLT 2822 User Manual

frequency converter 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 at
least be 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 frequency converter
is not to react to signals connected to the terminal.
Reference [1]. If this function is selected, the reference
can be changed by means of an analogue 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 Feed-
back [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
maximum feedback, parameter 205 Maximum refer-
ence, Ref
MAX
/ 414 Maximum feedback, FB
MAX
.
Description of choice:
Set the required voltage value. For reasons of accu-
racy, compensation should be made for voltage losses
in long signal cables.
314 Terminal 60, analogue input current
(AI [mA] 60 FUNCT)
Value:
No function (no operation) [0]
Reference (reference) [1]
Feedback (feedback) [2]
Wobble (WOBB.DELTA FREQ [%]) [10]
Function:
This parameter allows a choice between the different
functions available for the input, terminal 60. Scaling
of the input signal is effected in parameter 315 Terminal
60, min. scaling and parameter 316 Terminal 60, max.
scaling.
Description of choice:
No function [0]. Is selected if the frequency converter
is not to react to signals connected to the terminal.
Reference [1]. If this function is selected, the reference
can be changed by means of an analogue reference
VLT
®
2800 Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
38 MG.27.A2.02 - VLT
®
is a registered Danfoss trademark

Danfoss VLT 2822 Specifications

General

Brand	Danfoss
Model	VLT 2822
Category	DC Drives
Language	English