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PowerFlex Digital DC Drive User Manual -
Publication 20P-UM001C-EN-P - July 2008
D-16
Control Block Diagrams
Speed Threshold / Speed Control
0t
S
peed Thre
s
hold /
S
peed Contr
ol
P122
S
pd F
eed
ba
ck
P11
8
S
peed Reg In
P122
S
pd F
eed
ba
ck
P101
S
peed Thre
s
h P
o
s
P102
S
peed Thre
s
h Neg
P10
3
Thre
s
hold Del
a
y
P104
At
S
peed Error
P105
At
S
peed Del
a
y
0t
[Digital Outx Sel]
= 2 “Spd Thresh”
Speed Threshold
P393
[Digital Outx Sel]
= 3 “At Speed”
P
3
94
At
S
peed