YASKAWA GA800 600 V Drive Installation & Primary Operation page 11

For industrial applications

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Table Of Contents

Table of Contents

Item

• V/f: 150%/3 Hz

• CL-V/f: 150%/3 Hz

• OLV: 200%/0.3 Hz

• CLV: 200%/0 min

• AOLV: 200%/0.3 Hz

Starting Torque

Note:

Correctly select the drive and motor capacity for this starting torque in these control methods:

• OLV

• CLV

• AOLV

• V/f: 1:40

• CL-V/f: 1:40

Speed Control Range

• OLV: 1:200

• CLV: 1:1500

• AOLV: 1:200

Possible in CLV control method

Zero Speed Control

Parameter settings allow different limits in four quadrants in these control methods:

• OLV

Torque Limits

• CLV

• AOLV

0.0 s to 6000.0 s

Accel/Decel Time

The drive can set four pairs of different acceleration and deceleration times.

Approximately 20%

Approximately 125% with a dynamic braking option

• Short-time average deceleration torque

Motor output 0.4/0.75 kW: over 100%

Motor output 1.5 kW: over 50%

Motor output 2.2 kW and larger: over 20%, Overexcitation Braking/High Slip Braking allow for approximately 40%

• Continuous regenerative torque: Approximately 20%. Dynamic braking option allows for approximately 125%, 10%ED, 10 s

WARNING

• a regenerative converter

Braking Torque

• regenerative unit

• braking unit

• braking resistor

• braking resistor unit.

If you set the parameter incorrectly, the drive can decelerate for too long and cause serious injury or death.

Note:

• Short-time average deceleration torque refers to the torque needed to decelerate the motor (uncoupled from the load) from the rated speed to zero. Motor

characteristics can change the actual specifications.

• Motor characteristics change the continuous regenerative torque and short-time average deceleration torque for motors 2.2 kW and larger.

Select from 15 pre-defined V/f patterns, or a user-set V/f pattern.

V/f Characteristics

Torque Control, Droop Control, Speed/Torque Control Switching, Feed Forward Control, Zero Servo Function, Restart After Momentary Power Loss, Speed

Search, Overtorque/Undertorque Detection, Torque Limit, 17 Step Speed (max.), Accel/Decel Switch, S-curve Acceleration/Deceleration, 3-wire Sequence,

Auto-Tuning (Rotational and Stationary), Dwell Function, Cooling Fan ON/OFF Switch, Slip Compensation, Torque Compensation, Frequency Jump, Upper/

Main Control

Lower Limits for Frequency Reference, DC Injection Braking at Start and Stop, Overexcitation Braking, High Slip Braking, PID Control (with Sleep

Functions

Function), Energy Saving Control, MEMOBUS/Modbus Communication (RS-485 max, 115.2 kbps), Auto Restart, Application Presets, DriveWorksEZ

(customized functions), Removable Terminal Block, Online Tuning, KEB, Overexcitation Deceleration, Inertia (ASR) Tuning, Overvoltage Suppression, High

Frequency Injection

Item

Electronic thermal overload protection

Motor Protection

Momentary

Drive stops when the output current is more than 200% of the HD output current.

Overcurrent

Protection

Drive stops when the output current is more than these overload tolerances:

• HD: 150% of the rated output current for 60 seconds. The permitted frequency of overload is one time each 10 minutes.

• ND: 110% of the rated output current for 60 seconds. The permitted frequency of overload is one time each 10 minutes.

Overload Protection