Rockwell Automation 1395 Digital Reference Adapter Board - Manual (Page 59)

Chapter 6
StartĆUp
6-13
Figure 6.8
Digital Reference Input - Lead/Follower Example
+4096
0
-4096
Encoder Encoder PPR
P563 = 1024
One/Two/Quad
P 567 = 4
DIGITAL
SCALE
P564 = 875
DIGITAL
Filter
P566 = 0
OFFSET
P565 = 0
DRIVE 2
+4096
0
-4096
0
1
P569
Digital
Multiplier
Select
DIGITAL
MULTIPLIER
CONSTANT
P568 = 1000
DIGITAL
MULTIPLIER
FAST PARAM
P453
1395 Drive
Velocity Ref
Whole (P154)
Dig Ref Whole
Dig Ref Fraction
+4096
0
-4096
Encoder Encoder PPR
P563 = 1024
One/Two/Quad
P 567 = 4
DIGITAL
SCALE
P564 = 875
DIGITAL
Filter
P566 = 0
OFFSET
P565 = 0
DRIVE 3
+4096
0
-4096
0
1
P569
Digital
Multiplier
Select
DIGITAL
MULTIPLIER
CONSTANT
P568 = 1000
DIGITAL
MULTIPLIER
FAST PARAM
P453
1395 Drive
Velocity Ref
Whole (P154)
Dig Ref Whole
Dig Ref Fraction
+4096
0
-4096
Encoder Encoder PPR
P563 = 1024
One/Two/Quad
P 567 = 4
DIGITAL
SCALE
P564 = 1250
DIGITAL
Filter
P566 = 0
OFFSET
P565 = 0
DRIVE 4
+4096
0
-4096
0
1
P569
Digital
Multiplier
Select
DIGITAL
MULTIPLIER
CONSTANT
P568 = 1000
DIGITAL
MULTIPLIER
FAST PARAM
P453
1395 Drive
Velocity Ref
Whole (P154)
Dig Ref Whole
Dig Ref Fraction
In this example, the offset
(P565) is zero. To set it
for 10% (P565 = 40.96) the
digital scale must be
adjusted to maintain the
same follower ratio.
Parameter 564 for Drive 2 will
be 875 : 0.9 = 972 RPM.