YASKAWA GA700 Technical Manual page 457

Item
Possible in these control methods:
• CLV
Zero Speed
Control
• AOLV/PM
• CLV/PM
Parameter settings allow different limits in four quadrants in these control methods:
• OLV
• CLV
• AOLV
Torque Limits
• AOLV/PM
• CLV/PM
• EZOLV
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!
Set L3-04 = 0 [Stall Prevention during Decel = Disabled] when operating the drive with:
• a regenerative converter
Braking Torque
• regenerative unit
• braking unit
• braking resistor
• braking resistor unit.
Failure to obey could prevent the drive from stopping in the specified deceleration time and cause serious
injury or death.
Note:
• Models 2004 to 2138 and 4002 to 4168 have a braking transistor.
• 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
Select from 15 pre-defined V/f patterns, or a user-set V/f pattern.
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
Functions
Braking, PID Control (with Sleep Function), Energy Saving Control, MEMOBUS/Modbus Communication (RS-485
max, 115.2 kbps), Auto Restart, Application Presets, DriveWorksEZ (customized functions), Removable Terminal
Block with Parameter Backup Function, Online Tuning, KEB, Overexcitation Deceleration, Inertia (ASR) Tuning,
Overvoltage Suppression, High Frequency Injection
Item
Motor Electronic thermal overload protection
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 150% of the HD output current for 60 seconds.
Overload
Note:
Protection
The drive can trigger the overload protection function at 150% of the drive rated output in less than 60 s if the output
frequency is less than 6 Hz.
Overvoltage 200 V class: Stops when the DC bus voltage is more than approximately 410 V
Protection
400 V class: Stops when the DC bus voltage is more than approximately 820 V
200 V class: Stops when the DC bus voltage decreases to less than approximately 190 V
Undervoltage
Protection
400 V class: Stops when the DC bus voltage decreases to less than approximately 380 V
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Specifications
Table 9.10 Protection Functions
Specifications
9.5 Drive Specifications
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