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E6581329
TOSVERT VF-AS1/VF-PS1
PID control Instruction Manual
The technical information in this manual is provided to explain the principal
functions and applications of the product, but not to grant you a license to
use the intellectual property or any other property of Toshiba Schneider
Inverter Corporation or a third party.
© Toshiba Schneider Inverter Corporation 2011
All rights reserved.

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Table of Contents

   Related Manuals for Toshiba TOSVERT VF-PS1

   Summary of Contents for Toshiba TOSVERT VF-PS1

  • Page 1 The technical information in this manual is provided to explain the principal functions and applications of the product, but not to grant you a license to use the intellectual property or any other property of Toshiba Schneider Inverter Corporation or a third party.
  • Page 2: Table Of Contents

    E6581329① - Contents - Introduction ..........................2 PID control function ....................... 3 2.1. Process PID control ....................... 3 2.2. Speed PID control ......................5 2.3. Dancer control ........................ 7 PID control type and parameters ..................10 Setting for PID control......................12 4.1.
  • Page 3: Introduction

    E6581329① 1. Introduction VF-AS1 and VF-PS1 have PID control function. You can select the PID control type for your applications. Process PID control: For temperature or pressure control of fan and pump, which is performed gently in response to change the speed. Speed PID control :For speed control of a winder, which is performed at high speed in response to change the speed.
  • Page 4: Pid Control Function

    E6581329① 2. PID control function VF-AS1 and VF-PS1 have three types of PID control functions. You can select the type of PID control for applications by setting parameter. 2.1. Process PID control Process PID control is selected for temperature or pressure control of fan and pump, which is performed gently in response to change the speed.
  • Page 5 E6581329① 4) Set the following parameter to suit the system. a) Set the acceleration time and deceleration time to small for quick response. But too small setting cause inverter trip. Title Function Acceleration time 1 Deceleration time 1 b) Set the following parameters if necessary. Item Title Function...
  • Page 6: Speed Pid Control

    E6581329① 2.2. Speed PID control Speed PID control is selected for speed control of a winder, which is performed at high speed in response to change the speed. [Speed PID control (f359=2)] [Diagram] Output frequency upper limit Process upper limit PID deviation upper limit PID output upper limit (f364)...
  • Page 7 E6581329① f270~f275 Jump frequency 1 to 3 f240 Operation starting frequency f241 Operation starting frequency hysteresis f243 Stop frequency setting 4) Set the following parameters to suit the system. Speed PID control set the acceleration time and the deceleration time to the smallest automatically in spite of parameter(acc,dec) setting.
  • Page 8: Dancer Control

    E6581329① 2.3. Dancer control Dancer control is selected for dancer positioning control of winder system. [Dancer control (f359=4)] [System image] Dancer detection value 4-20mA input, etc Invert Invert Dancer position 0-10V input, etc Speed reference 0-10V input, etc [Diagram] Windup Jump Switch PID Speed reference...
  • Page 9 E6581329① [Dancer control operation] 1) Inverter operates by speed reference. *Dancer control use override addition function for speed reference. 2) PID control: Process value; dancer position Feedback value; dancer detection value Correct speed reference by deviation of PID control for dancer. Set the dead band (f379) for the deviation if necessary.
  • Page 10 E6581329① f241 Operation starting frequency hysteresis f243 Stop frequency setting 6) Set the following parameters to suit the system. a) Set the acceleration time and the deceleration time to small for quick response. But too small setting cause inverter trip. Title Function Acceleration time 1...
  • Page 11: Pid Control Type And Parameters

    E6581329① 3. PID control type and parameters The following is parameters for PID control. Valid parameters are different from each PID control types, Process PID control, Speed PID control and Dancer control. * Override function of dancer control is different from the others. PID control type ○: valid ×: invalid △:*1 Title...
  • Page 12 E6581329① f702 Frequency free unit display ○ ○ ○ magnification f703 Frequency free unit conversion ○ ○ ○ selection f729 Operation panel override ○ ○ △ multiplication gain <VF-AS1 only> [Input/output terminal function] PID control type ○: valid ×: invalid △:*1 Terminal Function Process type...
  • Page 13: Setting For Pid Control

    E6581329① 4. Setting for PID control First, set the process value and feed back value. : 4.1 Then, set other parameters to suit the motor and the system if necessary. : 4.2, 4.3 Note) It is necessary to convert the process value and feedback value into frequency for setting. Actual output frequency is different from setting frequency of PID control.
  • Page 14 E6581329① You can set the reverse characteristic or switch the characteristic. a) Example of reverse characteristic setting Parameter setting (Converted frequency) f202 (60Hz) aif2 (0Hz) 20mA f201 f203 1 b) Example of switching characteristic by S3 input terminal (positive logic) Parameter setting (Converted frequency) aif2...
  • Page 15 E6581329① [Example of PG feedback input] a) Connection example Connect single-phase pulse signal to A-NA terminals of PG feedback bord option. Inverter MCCB Motor U/T1 R/L1 V/T2 S/L2 W/T3 T/L3 Pulse generator Standby Forward (Reverse) Common VEC004Z VEC005Z Connect the pulse generator VEC006Z signal between A and NA.
  • Page 16 E6581329① Setting Title Function Adjustment range (Example) Maximum frequency 30.0~500.0 60.0(Hz) RP/hign speed pulse input point f234 0 ~ 100 0(%) 1 setting RP/hign speed pulse input point f235 0.0 ~ fh 0.0(Hz) 1 frequency RP/hign speed pulse input point f236 0 ~ 100 100 (%)
  • Page 17: Process Value

    E6581329① 4.1.2. Process value Input the target value against the feedback value as process value. 1. Select the process value input from parameter fmod or f207. Frequency setting mode selection 1 (fmod) Description Frequency setting mode selection 2 (f207) VI/II (voltage/current input) RR/S4 (potentiometer/voltage input) RX (voltage input) Operation panel input enabled (including LED/LCD...
  • Page 18 E6581329① Example of system Inverter R/L1 U/T1 Power supply S/L2 V/T2 Pressure T/L3 W/T3 sensor Pump Process value RR/S4 0 ~ 10Vdc Feedback value 1 to 2 atm 4 ~ 20mA VI/II b) Parameter setting Feedback vale Process value Feedback value Proces value (Converted frequency) (Converted frequency)
  • Page 19 E6581329① Title Function Setting (Example) avf2 RR/S4 input point 2 frequency 60(Hz) aif2 VI/II input point 2 frequency 60(Hz) f108 Analog iVI/II voltage/current switching f201 VI/II input point 1 setting 20(%) f202 VI/II input point 1 frequency 0(Hz) f203 VI/II input point 2 setting 100(%) f210 RR/S4 input point 1 setting...
  • Page 20: Override Function

    E6581329① 4.1.3. Override function Speed type You can add or multiply for process value by override function (f660, f661). <VF-AS1 only> Multiplication gain is able to set by parameter f729. See the inverter instruction manual for the detail of the setting. The functions are valid for process type PID control, but it is not used actually.
  • Page 21: Set To Suit The System

    E6581329① 4.3. Set to suit the system 4.3.1. Set if necessary Set the following parameters if necessary. Title Function Discription 1) It is upper limit of process value. f367 Process upper limit 2) It is necessary to input the process value less than maximum of feedback value.
  • Page 22: Switch To Frequency Command Operation

    E6581329① 4.3.4. Switch to frequency command operation Process type Speed type You can switch from PID control to frequency command operation (not PID control) by input terminal signal. a) Inverter operates with frequnency reference setted by process value. b) The acceleration time and the deceleration time are setted small for quick response in case of process PID control.
  • Page 23: Pid Control Adjustment

    E6581329① 5. PID control adjustment 5.1. Outline of adjustment If you have an aim of PID control gain, set each gain and check the working of your system. Adjust the gain only if necessary. If you don’t have an aim of PID control gain, adjust in order of the following. 1) First, operate in default setting and check the working of your system.
  • Page 24: Proportional (p) Gain

    E6581329① 5.2.1. Proportional (P) gain Set the proportional (P) gain of PID control by f362. The proportional (P) gain, a factor by which the deviation (difference between the process value and the feedback value) is multiplied, is used to perform control in such a way as to make a correction in proportion to the deviation.
  • Page 25: Applied Adjustment (common)

    E6581329① 5.3. Applied adjustment (Common) Adjust the following for stability if necessary. 5.3.1. PID deviation upper limit and lower limit Limit the PID deviation momentarily for stability. (It is not necessary to change under normal conditions.) Inverter can output the signal in case of the deviation level within the limit setting. Title Function Discription...
  • Page 26: Applied Adjustment (for Speed Pid Control)

    E6581329① 5.4. Applied adjustment (for speed PID control) Adjust the following for stability of speed PID control if necessary. 5.4.1. Delay filter The delay filter set with f361 moderates changes in deviation (primary delay control). Large setting cause processing speed delay for stability of the control. (It is not necessary to change under normal conditions.) Delay filter ...
  • Page 27: Analog Input Characteristics

    E6581329① 6. Analog input characteristics Set the analog input characteristics in case the feedback value and the process value input by the analog input terminals. *The following examples are setting from 0 to 60Hz VI/II terminal VI/II terminal (0-10V input) (4-20mA input) f108=0 f108=1...
  • Page 28 E6581329① AI1 terminal <Option> <VF-AS1 only> (-100 to 100% input) f225 (60Hz) f223 f225 -100% (0Hz) 100% f224 f222 Current input: Input 20mA or less between AI1+ terminal and AI1- terminal. Voltage input: Input ±10V or less between AI1+(or AI1-) terminal and CCA terminal.
  • Page 29: Parameter List Of Pid Control

    E6581329① 7. Parameter list of PID control Default Title Function Adjustment range setting Frequency setting mode 1: VI/II (voltage/current input) fmod selection 1 2: RR/S4 (potentiometer/voltage input) 3: RX (voltage input) 4: Operation panel input enabled (including LED/LCD panel option input) 5: Operation panel RS485 (2-wire) communications input 6: Internal RS485 (4-wire) communications...
  • Page 30 E6581329① Process upper limit f367 ll~ul (Hz) 60 / 50 Process lower limit f368 ll~ul (Hz) PID control waiting time f369 0~2400 (sec.) PID output upper limit f370 ll~ul (Hz) 60 / 50 PID output lower limit f371 ll~ul (Hz) Process increasing rate (speed f372 0.1~600.0(s)
  • Page 31 E6581329① [FM/AM pulse output and monitor output function] FM/AM pulse output Monitor output Function Option Communication Option Communication FD02 FE02 Frequency command value FD16 FE16 Speed feedback (real time value) FD17 FE17 Speed feedback (1-second filter) FD22 FE22 PID feedback value FD52 PID result frequency FE84...

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