MPH-02, MPB-02, MPD-02
Operating Modes
7-15
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Masking the Velocity Command Value
For each velocity window (cf. P-0-1207, P-0-1208) it is possible to define
an individual acceleration factor (cf. P-0-1209) that takes effect, however,
as well for acceleration as for deceleration.
When parameterizing the velocity windows the following aspects have to
be taken into account:
•
The list elements have to contain ascending numeric values (identical
values are allowed).
•
Inputs that lead to overlapping ranges (P-0-1207[n] > P-0-1208[n+1])
are not allowed.
•
When identical values are input for lower and upper limit
(P-0-1207[n] = P-0-1208[n]), the window is deactivated.
•
If the element P-0-1207[0] = 0, the window takes effect symmetrically
relative to speed zero. This prevents the velocity command value from
falling below a certain minimum value.
Note:
The default value of the parameters P-0-1207 and P-0-1208 is
zero which means that the speed window hasn’t been defined.
Diagnostic Messages and Monitoring Functions
Diagnostic Status Message
The activated "velocity control" mode is displayed by the following
diagnostic message:
•
A0101 Drive in velocity control
Status of Ramp Generator
The currently effective velocity command value at the output of command
value adjustment that is preset for the velocity loop via the fine
interpolation, is mapped to parameter
P-0-0048, Effective velocity
command value
.
"Frequency converter" applications require several status messages that
are contained in parameter
P-0-1210, Status word of velocity control
mode
:
•
Bit 0 = 1
→
command value reached
The output of the ramp generator, including the jerk filter, corresponds
exactly to the selected command value, i.e. either to the value of
S-0-0036 or a selected fixed value from P-0-1205.
•
Bit 1 = 1
→
run-up stop active
The command "run-up stop" prevents the acceleration ramp from
being integrated. The jerk filter is not stopped, the current command
value for the time set in the jerk filter can change.
•
Bit 2 = 1
→
acceleration active
The absolute value of the present command value is higher than the
current command value. Either the acceleration ramp is active or the
jerk filter has not yet reached the final value.
•
Bit 3 = 1
→
deceleration active
The absolute value of the present command value is lower than the
current command value. Either the deceleration ramp is active or the
jerk filter has not yet reached the final value.
Active Operating Mode
Effective Velocity Command
Value
Status of Ramp Generator
(Run-Up Encoder)
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
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Hydraulic
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Pneumatic
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Electrical
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Mechanical
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426-5480
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