Decentral Solutions
211 Jog ramp time
(JOG RAMP TIME)
Value:
0.02 - 3600.00 sec.
✭
3.00 sec
Function:
The jog ramp time is the acceleration/deceleration
time from 0 Hz to the rated motor frequency f
M,N
(parameter 104
Motor frequency, f
M,N
). It is assumed
that the output current will not reach the current limit
(set in parameter 221
Current limit I
LIM
).
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.
✭
3.00 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
LIM
. Quick-stop is activated via one of
the digital inputs or the serial communication.
Description of choice:
Set the required ramp-down time.
213 Jog frequency
(JOG FREQUENCY)
Value:
0.0 - Par. 202 Output frequency high limit, f
MAX
✭
10.0 Hz
Function:
Jog frequency f
JOG
means a fixed output frequency
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
10 Hz
Par. 205
Maximum reference
50 Hz
Par. 215
Preset reference
15 %
Par. 308
Term.53, Analog input
Reference
Par. 309
Term.53, min. scaling
0 V
Par. 310
Term.53, max. scaling
10 V
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
10.0 Hz
Reference contribution at 4 Volt
16.0 Hz
Par. 215
Preset reference
6.0 Hz
Resulting reference
32.0 Hz
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
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.90.F2.22 - VLT is a registered Danfoss trademark
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