YASKAWA GA50U Series

3 Drive Specifications
12 YASKAWA TOEPC71061752B GA500 Drive Installation & Primary Operation
Item Specification
Starting Torque
• V/f: 150%/3 Hz
• OLV: 150%/1 Hz
• OLV/PM: 100%/5% speed
• AOLV/PM: 100%/0 min
-1
(when high frequency injection is enabled)
• EZOLV: 100%/10% speed
Note:
Correctly select the drive and motor capacity for this starting torque in these control methods:
• OLV
• AOLV/PM
Speed Control
Range
• V/f: 1:40
• OLV: 1:100
• OLV/PM: 1:10
• AOLV/PM: 1:100 (when high frequency injection is enabled)
• EZOLV: 1:10
Zero Speed
Control
Possible in AOLV/PM control methods.
Torque Limits
You can use parameter settings for different limits in four quadrants in these control methods:
• OLV
• AOLV/PM
• EZOLV
Acceleration and
Deceleration
Times
0.0 s to 6000.0 s
The drive can set four pairs of different acceleration and deceleration times.
Braking Torque
Approximately 20% without a resistor
Approximately 125% with a dynamic braking option
WARNING
Set L3-04 = 0 [Stall Prevention during Decel = Disabled] when you
operate the drive with:
• a regenerative converter
• regenerative 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.
V/f
Characteristics
Select from 15 pre-defined V/f patterns, or a user-set V/f pattern.
Main Control
Functions
Feed Forward Control, Restart After Momentary Power Loss, Speed Search, Overtorque 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/Lower Limits for Frequency
Reference, DC Injection Braking at Start and Stop, Overexcitation Braking, High Slip Braking, PID
Control (with Sleep Function), Energy Saving Control, MEMOBUS/Modbus Communications (RS-
485 max, 115.2 kbps), Auto Restart, Application Presets, DriveWorksEZ (customized functions),
Parameter Backup Function, Online Tuning, KEB, Overexcitation Deceleration, Overvoltage
Suppression, High Frequency Injection, etc.