Allen-Bradley 2-D Instrukcja Użytkownika Strona 54
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5-16 Parameters and Programming
160 PI Control Setup
The Analog Signal Follower model provides for closed loop process control
(PI control) where PI regulator output is used to drive the process to a desired
set point.
Wire For PI Control
1. Connect input and output power to the drive.
Follow the instructions provided in Section 2, Installation and Wiring.
2. Connect control wiring (see Chapter 2, Figure 2.17). A contact closure on
terminals 6 and 7 is required for the drive to respond to a Start/Run command.
3. Connect feedback device to TB3-2 and TB3-3 for 0 – 10V feedback or to
TB3-3 and TB3-4 for 4 – 20 mA feedback.
4. Verify polarity of feedback. That is, increasing feedback signal requires
increasing output frequency.
Program for PI Control
1. Set
P56 - [Reset Functions]
to 1 to reset the drive to defaults.
An
F48 - Reprogram Fault
will occur which must be cleared by cycling the Stop
input to the drive.
2. Set
P46 - [Input Mode]
to 9 and cycle power or set
P56 - [Reset Functions]
to 2 for
the change to take effect.
3. Set
P72 - [Slip Compensation]
to 0.
4. Use
P75 - [Analog Input Minimum]
and
P76 - [Analog Input Maximum]
to scale
feedback to the process operating range. This may also be used to invert the
feedback so that increasing feedback signal produces decreasing output
frequency.
5. Set
P83 - [PI Process Reference]
to 20 (as an initial setting).
This establishes the set point as 20% of the maximum analog input.
6. Connect TB3-8 with TB3-7. This will disable the PI drive and force the output
frequency to the
P58 - [Internal Frequency]
setting.
7. Connect TB3-6 with TB3-7 to start the drive. Verify motor operation and di-
rection.
8. Remove TB3-8 from TB3-7. This will place the drive into PI mode.
Tune the PI Loop
Parameters
P81 - [PI Proportional Gain]
and
P82 - [PI Integral Gain]
are used to set how
the drive will respond to errors (fluctuations) in feedback.
•
P81 - [PI Proportional Gain]
corrects output frequency based on the magnitude of
the error.
•
P82 - [PI Integral Gain]
corrects output frequency based on the length of time an
error has been present.
- 160 SSC™ 1
- Variable Speed 1
- (Series C) 1
- Important User Information 2
- Series C Summary of Changes 3
- Table of Contents 5
- Getting Started 7
- 160 -AA02 N SF1 P1 8
- 160-AA02NSF1P1 9
- Standard Drive Features 10
- Optional Drive Features 11
- End of Chapter 12
- Installation and Wiring 13
- Power Wiring 14
- Specifications 15
- Terminal Block Wiring 15
- Motor Branch Circuit Analysis 16
- Input Power Conditioning 18
- Motor Cable Types 18
- Reflected Wave Protection 19
- Capacitive Current Coupling 20
- Nm (lb in) 21
- Wiring Diagram Key 22
- 2-12 Installation and Wiring 24
- Installation and Wiring 2-17 29
- Analog Frequency Sources 30
- Preset Frequency Sources 31
- Internal Frequency Source 32
- Program Keypad Module 33
- Key Functions 34
- Program Keypad Module 3-3 35
- Installation 36
- Start-Up 37
- 4-2 Start-Up 38
- Parameters and Programming 39
- Important Reset Actions 40
- Programming Example 40
- Display Group (Read Only) 43
- 0/48 Numeric Value 43
- Program Group Parameters 44
- % [Base Frequency] 45
- % [Base Voltage] 45
- 46 [Input Mode] 47
- 47 [Output Configure] 47
- 48 [Output Threshold] 47
- 49 [PWM Frequency] 48
- 50 [Restart Tries] 48
- 51 [Restart Time] 48
- 52 [DB Enable] 48
- 53 [S-Curve] 49
- 54 [Clear Fault] 49
- 55 [Memory Probe Address] 49
- 56 [Reset Functions] 49
- Preset Speed Model Only 50
- Signal Follower 50
- Model Only 50
- Settings: 52
- 81 [PI Proportional Gain] 53
- 82 [PI Integral Gain] 53
- 83 [PI Process Reference] 53
- 84 [PI Dead Band] 53
- 160 PI Control Setup 54
- Troubleshooting 57
- Problem Corrective Action 59
- 6-4 Troubleshooting 60
- CSA 22.2 62
- Specifications A-3 63
- End of Appendix 64
- Accessories and Dimensions 65
- Accessory Dimensions 66
- Line Filters Figure B.3 67
- MADE IN U.S.A 68
- 29 ➊ 69
- Drive Dimensions 70
- 5.5 (0.22) 72
- Mounting Holes—2 Places 72
- CE Conformity 75
- Shielded Enclosure 76
- Cable Clamps 77
- Motor Cable 77
- Control Wiring TB3 78
- Ground Terminal – PE 78
- CE Conformity C-5 79
- Index-10 90
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