PowerFlex Digital DC Drive User Manual -
Publication 20P-UM001C-EN-P - July 2008
Application Notes
C-21
the threshold speed for counter-clockwise rotation in Par 102 [Speed Thresh
Neg]. You can specify a delay time before indication that the speed has
fallen below the threshold values in Par 103 [Threshold Delay]. Par 393
[Speed Threshold] can be assigned to a digital output. A digital output so
assigned will only change state at the clockwise (positive) speed threshold.
Par 394 [At Speed] indicates whether or not the speed of the drive
corresponds to the set speed reference (specified in Par 118 [Speed Reg In])
before the speed regulator and the ramp reference (if enabled) are applied.
The speed above and below the speed reference at which indication will
occur is set in Par 104 [At Speed Error]. You can specify a delay time before
indication that the speed reference is within the range set in Par 104 [At
Speed Error] will occur using Par 105 [At Speed Delay]. Par 394 [At Speed]
can be assigned to a digital output.
0
t
P122
S
pd Feed
ba
ck
P101
S
peed Thre
s
h Po
s
P102
S
peed Thre
s
h Neg
P10
3
Thre
s
hold Del
a
y
[Digital Outx Sel]
= 2 “Spd Thresh”
Speed Threshold
P393
P11
8
S
peed Reg In
P122
S
pd Feed
ba
ck
P104
At
S
peed Error
P105
At
S
peed Del
a
y
0
t
At Speed
P394
[Digital Outx Sel]
= 3 “At Speed”
