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Programming
Page
D-106
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
8
9
10
A
B
C
D
E
1
2
3
4
5
6
7
VIRTUAL MASTER
SETUP::PHASE CONTROL::VIRTUAL MASTER
This block transmits a regular update of speed, position and acceleration to all other drives listening on the selected channel.
The output is profiled by the ACCELERATION, DECELERATION and JERK 1-4 parameters.
An example acceleration graph for a velocity 60 %/s maximum, acceleration of 20 %/s
2
and a jerk of 10 %/s
3
is shown below.
Parameter Descriptions
CHANNEL
PREF: 118.17
Default: 0
Range: 0 to 64
This parameter sets the Firewire channel that the Virtual Master broadcasts references on.
SOURCE
PREF: 118.20
Default: 0
Range: See below
This selects the source of the speed, position, and acceleration data that is transmitted.
Enumerated Value
:
Source
0 : SRAMP
This selects the s ramp function, which takes the
INPUT
parameter
(speed) and processes it to get
speed,
position,
and
acceleration.
1 : FEEDBACK ENCODR
The speed, position, and acceleration of the feedback
encoder
are
selected
and
broadcast.
2 : REFERNCE ENCODR
The speed, position, and acceleration of the reference
encoder
are
selected
and
broadcast.
INPUT
PREF: 118.01
Default: 0.00 %
Range: -100.00 to 100.00 %
Ramp input.
ACCELERATION
PREF: 118.02
Default: 10.00 /s²
Range: 0.00 to 100.00 /s²
Sets the acceleration rate in units of percent per second², i.e. if the full speed of the machine is 1.25m/s then the acceleration
will be: 1.25 x 75.00% = 0.9375m/s²
DECELERATION
PREF: 118.03
Default: 10.00 /s²
Range: 0.00 to 100.00 /s²
This functions in the same way as ACCELERATION above.