3 changing reference sources, 4 auto/manual control – Rockwell Automation SP600 User Manual Version 3.0 User Manual

Page 83

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Installing Control Wiring

7-11

7.7.3 Changing Reference Sources

The selection of the active Speed Reference can be made through
digital inputs, DPI command, Jog key, or Auto/Manual OIM
operation. See figures 7.3 and 7.4.

7.7.4 Auto/Manual Control

The Auto/Manual input is not part of the logic commands controlled
by parameter 89 (Logic Source Sel). The Auto/Manual input affects
the speed reference source only.

In Auto reference mode, the reference source is determined by
terminal block inputs (if configured) or a parameter (Speed Ref A
Sel). Only one port at a time can control (own) the reference source.

In Manual reference mode, the reference source for the drive is
based on the port that commanded it most recently. The last source
that commands Manual reference mode will determine the
reference used by the drive.

The Auto/Manual function is available through the terminal block
(edge sensitive) and LCD OIM function keys. If configured on the
terminal block, it is possible to have the digital input in the "Manual"
position but have the Manual reference being controlled from
another port. Because it is an edge-sensitive signal, the digital input
would have to be switched to "Auto" and then back to "Manual" to
re-acquire Manual reference control.

The Jog reference will bypass the Auto/Manual reference while it is
asserted from the control source. When the Jog reference is
released, the control source reverts to source that was in effect
before the Jog reference was asserted.

Figure 7.3 – Speed Reference Control Flowchart

Preset Speed 1, Parameter 101

Preset Speed 2, Parameter 102

Preset Speed 3, Parameter 103

Preset Speed 4, Parameter 104

Preset Speed 5, Parameter 105

Preset Speed 6, Parameter 106

Preset Speed 7, Parameter 107

TB Man Ref Sel, Parameter 096

Auto/Manual
Digital Input

DPI Port Ref 1-6, See Parameter 209

DPI Command

Jog Speed, Parameter 100

Jog Command

Trim

[Digital Inx Select]:
Speed Sel 3 2 1

0 0 1

0 1 1

0 1 0

1 0 0
1 0 1

1 1 0
1 1 1

Auto

Man

Drive Ref Rslt (272)

Commanded

Frequency (2)

Min/Max Speed

Acc/Dec Ramp

and

S Curve

Pure Reference

Post Ramp Reference (273)

to follower drive for
Frequency Reference

to follower drive for
Frequency Reference

Auto Speed Ref Options

Manual Speed Ref Options

Slip Compensation (123)

1 "Slip Comp"

None

0 "Open Loop"

PI Output (138)

2 "Process Pi"

Speed Adders

[Speed Mode]:

PI Exclusive Mode
[PI Configuration]:
Bit 0, Excl Mode = 0

Output

Frequency (1)

Mod Functions

(Skip, Clamp,

Direction, etc.)

Speed Ref A Sel, Parameter 090

0 0 0

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