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MCO 305 Design Guide
__ Software Reference __
MG.33.L4.02 – VLT
®
is a registered Danfoss trademark
145
PULSACC
Summary
Set acceleration for the virtual master.
Syntax
PULSACC a
NB!:
Changes in the acceleration in PULSACC are only valid after the next PULSVEL
command.
Parameter
a = acceleration in Hz/s
Description
With PULSACC it is possible to set the acceleration/deceleration for the virtual
master (encoder output).
The virtual master signal simulates an encoder signal. To calculate the pulse
acceleration PULSACC the parameter
Encoder Resolution
, the master velocity and
the ramp times must be taken into consideration.
The signals generated are evaluated simultaneously as master input so that
MAPOS, MIPOS, etc. function as they would in an external master.
PULSACC = 0 is the condition for switching off the virtual master mode, provided it
is followed by a PULSVEL command.
Command Group
SYN
Cross Index
PULSVEL
Example
The virtual master signal should correspond to an encoder signal of
1024 counts/revolution. The maximum speed of 25 encoder revolutions/s should
be achieved in 1 s.
Hz/s
25600
counts/s²
25600
s
1
olution
counts/rev
1024
counts/s
25
[s]
t
[Hz]
(PULSVEL)
velocity
pulse
PULSACC
'
'
PULSVEL
Summary
Set the velocity for the virtual master.
Syntax
PULSVEL v
Parameter
v = velocity in pulses per second (Hz)
Description
With PULSVEL it is possible to set the velocity for the virtual master (encoder
output).
The virtual master signal simulates an encoder signal. To calculate the pulse
velocity the parameters
Encoder resolution
and master velocity must be taken into
consideration.
Command Group
SYN
Cross Index
PULSACC
Example
The virtual master signal should correspond to an encoder signal of
2048 counts /revolution within an encoder speed of 50 revolutions/s.
Hz
102400
Hz
50
2048
s
turns
turn
per
counts
encoder
PULSVEL
Содержание MCO 305
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