Hitachi WJ C1 Series User Manual

Contents
C-5
9.5 Selecting Control Mode for the Motor and Load .......................................................................... 9-5-1
9.5.1 Selection of Control Mode ......................................................................................................... 9-5-1
9.5.2 Driving with V/f Control .............................................................................................................. 9-5-2
9.5.3 Using Torque Boost Function .................................................................................................... 9-5-5
9.5.4 Driving with Energy-saving Mode .............................................................................................. 9-5-7
9.5.5 Driving with V/f Control with Encoder ..................................................................................... 9-5-8
9.5.6 Stabilizing Motor Hunting........................................................................................................ 9-5-10
9.5.7 Driving with Sensorless Vector Control ................................................................................. 9-5-11
9.5.8 Using Encoder Feedback......................................................................................................... 9-5-14
9.6 Speed/Torque Control According to Load .................................................................................... 9-6-1
9.6.1 Speed Control and Torque Control .......................................................................................... 9-6-1
9.6.2 Driving with Limited Torque ....................................................................................................... 9-6-2
9.6.3 Driving by Torque Reference ..................................................................................................... 9-6-5
9.6.4 Driving with Torque Bias ............................................................................................................ 9-6-6
9.7 Selecting Start/Stop Modes ............................................................................................................ 9-7-1
9.7.1 Starting with Gradually Increasing Voltage .............................................................................. 9-7-1
9.7.2 Starting with DC Braking ............................................................................................................ 9-7-2
9.7.3 Starting with Frequency Matching ............................................................................................ 9-7-3
9.7.4 Starting with Active Frequency Matching ................................................................................ 9-7-4
9.7.5 Starting after Trip Reset or Power-on ....................................................................................... 9-7-8
9.7.6 Starting after Free Run Stop ....................................................................................................... 9-7-9
9.7.7 Selecting Stop Operation ........................................................................................................ 9-7-10
9.7.8 Stopping with DC Braking ....................................................................................................... 9-7-11
9.7.9 Switching to Commercial Power Supply (Commercial Power Supply Change) .............. 9-7-15
9.7.10 Starting and Stopping with External Brake Control .......................................................... 9-7-16
9.7.11 Switching Between Two Motors ........................................................................................... 9-7-18
9.8 Driving by PID Process Control ...................................................................................................... 9-8-1
9.8.1 Using PID Control ........................................................................................................................ 9-8-1
9.9 Using Trip Prevention Functions .................................................................................................... 9-9-1
9.9.1 Restriction to Avoid Overload .................................................................................................... 9-9-1
9.9.2 Restriction to Avoid Overcurrent ............................................................................................... 9-9-3
9.9.3 Suppressing Overvoltage by Controlling Output Frequency ................................................ 9-9-4
9.9.4 Suppressing Overvoltage by Controlling Output Voltage ...................................................... 9-9-6
9.9.5 Suppressing Overvoltage with Braking Resistor ...................................................................... 9-9-8
9.9.6 Restarting after Instantaneous Power Failure/Undervoltage ................................................ 9-9-9
9.9.7 Restarting after Overvoltage/Overcurrent ............................................................................ 9-9-14
9.9.8 Continuing to Drive Even after Instantaneous Power Failure/Undervoltage Error ......... 9-9-17

Hitachi WJ C1 Series Specifications

General

Brand	Hitachi
Model	WJ C1 Series
Category	Inverter
Language	English