Allen-Bradley PowerFlex 70 Reference Manual page 155

Parameter Settings
Parameter
[Trim In Select]
[Scale1 In Hi]
[Scale1 In Lo]
[Scale1 Out Lo]
[Scale2 In Hi]
[Scale2 In Lo]
[Scale2 Out Hi]
[Scale2 Out Lo]
Parameter Links
Destination Parameter
[Scale1 In Value]
[Scale2 In Value]
[Scale1 Out Hi]
[Preset Speed 1]
483
Commanded Speed
482
2
484
477
Analog In2 Value
476
2
478
Example Configuration #2
Setup a scale block to send parameter 415, [Encoder Speed] to Analog Output 1
as a 0-10V signal.
1800
1500
1200
900
600
300
0
0 1
Analog Out1 Value (Volts)
Parameter Settings
Parameter Value
[Analog Out1 Sel] Scale Block1 Out
[Analog Out1 Hi] 10 V
[Analog Out1 Lo] 0 V
[Scale1 In Hi] 1800 RPM
[Scale1 In Lo] 0 RPM
Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013
Value Description
11, Preset 1 Preset 1 becomes the trim speed
10.0 V Hi value of Analog In 2
0 V Lo value of Analog In 2
0 RPM Lo value of desired Trim
1800 RPM Hi value of Commanded Speed (Max Speed)
0 RPM Lo value of Commanded Speed
180 RPM 10% of Max Speed
0 RPM Corresponds to lo value of Commanded Speed
Source Parameter Description
[Analog In2 Value] We are scaling Analog In 2 for our trim
[Commanded Speed] Use Commanded Speed as Input to Scale Block 2
[Scale2 Out Value] Use the output of Scale Block 2 to set the upper limit of Scale
Block 1 output
[Scale 1 Out Value] Use the scaled analog input as the trim reference into Preset
Speed 1
Scale2 In Hi Scale2 Out Hi
Scale2 Out
Scale2 In Value
Value
Scale2 In Lo Scale2 Out Lo
Scale1 In Hi Scale1 Out Hi
Scale1 Out
Scale1 In Value
Value
Scale1 In Lo Scale1 Out Lo
2 3 4 5 6 7 8 9 10
Description
Scale Block1 Output goes to Analog Out1
Hi value of Analog Output 1 corresponding to Hi value of encoder speed
Lo value of Analog Output 1 corresponding to Lo value of encoder speed
Hi value of the encoder speed
Lo value of the encoder speed
Scale Blocks
485
= Link
487
486
479
Preset Speed 1
101
481
480
155