Reverse speed limit – Rockwell Automation 20M LPM15 Liquid-Cooled Adjustable Frequency AC Drive FRN 2.xxx User Manual
Page 118
D-8
Application Notes
Reverse Speed Limit
Figure D.3 [Rev Speed Limit], parameter 454 set to zero
Figure D.4 [Rev Speed Limit], parameter 454 set to a non-zero Value
+
+
+
+
z
-1
*
*
PI Fbk
PI Error
PI Output
PI Ref
PI Cmd
Linear
Ramp
-
+
-
Linear Ramp
& S-Curve
Spd Ramp
0
+
+
Zclamped
In Limit
PI XS Error
abs
PI_Config
.Exclusive
Current Limit
or Volt Limit
Spd Cmd
*(PI Ref Sel)
*(PI Fbk Sel)
PI Kp
PI Ki
PI Neg Limit
PI Pos Limit
PI_Status
.Hold
Spd Ref
&
PI_Config
.RampCmd
PI_Status
.Enabled
PI_Config
.Invert
PI_Config
.Sqrt
0
PI_Config
.Torq Trim
PI_Config
.SpdReg
PI_Status
.Enabled
PI_Config
.ZeroClamp
PI ExcessErr
PI_Config
.PreloadCmd
Preload Value
PI_Status
.Enabled
Spd Cmd
+32K
0
-32K
0
+32K
-32K
Spd Cmd
to
A
A
Forward
Speed
Reverse
Speed
[Maximum
Speed]
[Maximum
Speed]
Minimum
Speed = 0
10V
–10V
Forward
Speed
Reverse
Speed
[Maximum
Speed]
[Maximum
Speed]
Minimum
Speed 0
Minimum
Speed 0
10V
–10V
Forward
Speed
Reverse
Speed
Limit
Maximum
Speed
10V
–10V
Reverse
Speed
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