Reference Function - Danfoss VLT DMS 300 Manual

211 Jog ramp time
(JOG RAMP TIME)
Value:
0.02 - 3600.00 sec.
Function:
The jog ramp time is the acceleration/deceleration
time from 0 Hz to the rated motor frequency f
(parameter 104 Motor frequency, f
that the output current will not reach the current limit
(set in parameter 221 Current limit I
The jog ramp time starts if a jog-signal is given
via the LCP control panel, one of the digital inputs
or the serial communication port.
Description of choice:
Set the required ramp time.
212 Quick-stop ramp-down time
(Q STOP RAMP TIME)
Value:
0.02 - 3600.00 sec.
Function:
The quick-stop ramp-down time is the deceleration
time from the rated motor frequency to 0 Hz, provided
no overvoltage arises in the inverter because of
generating operation of the motor, or if the generated
current exceeds the current limit in parameter 221
Current limit I . Quick-stop is activated via one of
LIM
the digital inputs or the serial communication.
Description of choice:
Set the required ramp-down time.
= factory setting. () = display text [] = value for use in communication via serial communication port
122
3.00 sec
M,N
). It is assumed
M,N
).
LIM
3.00 sec
Decentral Solutions
213 Jog frequency
(JOG FREQUENCY)
Value:
0.0 - Par. 202 Output frequency high limit, f
Function:
Jog frequency f means a fixed output frequency
JOG
that the variable frequency drive supplies to the motor
when the Jog function is activated. Jog can be
activated via the digital inputs, serial communication
or via the LCP control panel, on the condition that
this is active in parameter 015 Local jog.
Description of choice:
Set the required frequency.

Reference function

The example shows how the resulting reference is
calculated when Preset references is used together with
Sum and Relative in parameter 214 Reference function.
The formula for the calculation of the resulting reference
can be seen in the section entitled All about the FCD
300. See also the drawing in Handling of references.
The following parameters are preset:
Par. 204 Minimum reference
Par. 205 Maximum reference
Par. 215 Preset reference
Par. 308 Term.53, Analog input
Par. 309 Term.53, min. scaling
Par. 310 Term.53, max. scaling
When parameter 214 Reference function is set to Sum
[0] one of the preset Preset references (par. 215-218)
is added to the external references as a percentage of
the reference range. If terminal 53 is applied an analog
input voltage of 4 Volt will be the resulting reference:
Par. 214 Reference function = Sum [0]:
Par. 204 Minimum reference
Reference contribution at 4 Volt
Par. 215 Preset reference
Resulting reference
When parameter 214 Reference function is set to
Relative [1] the defined Preset references (par. 215-218)
are added as a percentage of the total of the present
MG.90.F2.22 - VLT is a registered Danfoss trademark
MAX
10.0 Hz
10 Hz
50 Hz
15 %
Reference
0 V
10 V
10.0 Hz
16.0 Hz
6.0 Hz
32.0 Hz