Rockwell Automation 20G PowerFlex 750-Series AC Drives - Manual (Page 256)

256 Rockwell Automation Publication 750-RM002B-EN-P - September 2013
Chapter 4 Motor Control
Trim
The speed reference source, specified in P545 [Spd Ref A Sel] or P550 [Spd Ref
B Sel], can be trimmed by variable amount. You have the option to trim the speed
reference by a percentage of the reference and/or by a fixed amount and can
dictate whether it is a positive or negative value. Refer to the PowerFlex 750-
Series Trim Block Diagram below.
Example 1
The following example shows the configuration and resultant of the percent trim
function:
• P545 [Spd Ref A Sel] = P546 [Spd Ref A Stpt]
• P546 [Spd Ref A Stpt] = 20.00 Hz
• P608 [TrmPct RefA Sel] = P609 [TrmPct RefA Stpt]
• P609 [TrmPct RefA Stpt] = 25%
• P2 [Commanded SpdRef ] = 25.00 Hz
545
Speed Ref A Sel
571 Preset Speed 1
572 Preset Speed 2
573 Preset Speed 3
574 Preset Speed 4
575 Preset Speed 5
576 Preset Speed 6
577 Preset Speed 7
546 Spd Ref A Stpt
x
608
TrmPct RefA Sel
TrimPct RefA Stpt
549
Speed Ref A Mult
+ x
( Ref A Auto )
Spd Ref Command
( Ref B Auto )
( Preset3 Auto )
( Preset4 Auto )
( Preset5 Auto )
( Preset6 Auto )
( Preset7 Auto )
573
574
575
576
577
Speed Ref B Sel 550
x
554
x
Speed Ref B Mult
+
( DPI Prt1 Man )
( DPI Prt2 Man )
( DPI Prt3 Man )
( DPI Prt4 Man )
( DPI Prt5 Man )
( DPI Prt6 Man )
871
872
873
874
875
876
134 Aux Vel Feedback
d7
871
872
873
874
875
876
( Int ENet Man )
( DevLogix Man )
Port 1 Reference
Port 2 Reference
Port 3 Reference
Port 4 Reference
Port 5 Reference
Port 6 Reference
Disabled (0)
609
Disabled (0)
Disabled (0)
930 Speed Ref Source
616 SpdTrimPrcRefSrc
617 Spd Trim Source
Option Ports:
Analog, EtherNet,
DeviceLogix
871
872
873
874
875
876
Port 1 Reference
Port 2 Reference
Port 3 Reference
Port 4 Reference
Port 5 Reference
Port 6 Reference
Anlg In1 PortVal
(option port)
Anlg In2 PortVal
(option port)
591 Spd Ref Sel Sts
300
Speed Units
(Hz / RPM)
Default
558 MOP Reference
879 13 12 6 Drive Logic Rslt 14
Ref
Sel 2
Ref
Sel 1
Ref
Sel 0 Man
935 11 10 14 Drive Status 1 12 13
Ref
Bit 3
Ref
Bit 2
Ref
Bit 1
Ref
Bit 0
9
Man Ref
Bit 4
( DI Man Sel )
( Alt Man Sel )
563 DI Man Ref Sel
547
548
Spd Ref A AnlgHi
Spd Ref A AnlgLo
*
7
6
5
4
3
2
1
17
18
19
20
21
22
29
30
16
31
0
*
564
565
DI ManRef
AnlgHi
DI ManRef
AnlgLo
*
*
610
611
TrmPct RefA AnHi
TrmPct RefA AnLo
*
Default
600
Trim Ref A Sel
Trim Ref A Stpt 601
Disabled (0)
871
872
873
874
875
876
Port 1 Reference
Port 2 Reference
Port 3 Reference
Port 4 Reference
Port 5 Reference
Port 6 Reference
Anlg In1 PortVal
(option port)
Anlg In2 PortVal
(option port)
602
603
Trim RefA AnlgHi
Trim RefA AnlgLo
*
Default
Parameter
Selection
Parameter
Selection
Parameter
Selection
Parameter
Selection
328 Alt Man Ref Sel
329
330
Alt Man
Ref AnHi
Alt Man
Ref AnLo
Parameter
Selection
Parameter
Selection
551 Spd Ref B Stpt
552 Spd Ref B AnlgHi
553 Spd Ref B AnlgLo
Other Ref Sources
TrmPct RefB Sel 612
Disabled (0)
*
Parameter
Selection
613 TrimPct RefB Stpt
614 TrmPct RefB AnHi
615 TrmPct RefB AnLo
Other Ref Sources
Trim Ref B Sel 604
Disabled (0)
*
Parameter
Selection
605 Trim Ref B Stpt
606 Trim RefB AnlgHi
607 Trim RefB AnlgLo
Other Ref Sources
[21F3]
[3H5]
[26H3]
‘d’ Prefix Refers to Diagnostic Item Number (ex. d33) – Reference Symbol Legend
* Note: Analog Hi, Lo
scaling only used when
Analog Input is selected
To
Spd Ref (2)
[6A1]