Hitachi L100 300, SJ 300, L100 300 manual

HAL100PID

HITACHI INVERTER

PID CONTROL

USERS’ GUIDE

After reading this manual, keep it for future reference

Hitachi America, Ltd.

SJ/L100/300 SERIES

Contents

Main CONTENTS 1. OVERVIEW 2. PID CONTROL ON SJ100/L100 Fig. 2-1 PID Control block diagram 2-1 PID Control (1) P : Proportional Control L100 Kp . 0 Page 2-2 PID Gain Adjustments & Control Characteristics Fig. 2-4 Example of good control and bad control (in case of step response) 3. HOW TO USE 3-1 Structure & Parameters (1) Control Mode Feedback Target Fig. 3-1 control block diagram of PID control (3) Deviation Calculation (4) Target Input Fig. 3-2 Setting Active Range (A11=0, A12=0 or 100) : Example 1 (5) Feedback Input & Setting PID Performance Area (6) Scale Conversion Fig. 3-3 Setting Active Range : Example 2 (b) A75 = 0.6 (a) Factory setting Fig. 3-4 Example of Scale Conversion Page - (3) Scale Conversion Factor Setting (4) Target Input by Digital Input Signal Table 3-3 Multi-stage Target Input (1 : ON, 0 : OFF) (5) PID Mode Selection 3-4 Example of Each Gain Adjustment (Kp & Ti) 3-5 General Cautions 4. EXAMPLE OF ACTUAL APPLICATION 4-1 Constant Flow Control Fig. 4-1 Example of Constant Flow Control 4-2 Constant Temperature Control Constant Temperature Control Fig. 4-2 Example of 5. INDEX