YASKAWA GA800 Technical Reference page 493

Item
• V/f: 1:40
• CL-V/f: 1:40
• OLV: 1:200
• CLV: 1:1500
• AOLV: 1:200
• OLV/PM: 1:20
Speed Control Range
• AOLV/PM: 1:100
• CLV/PM: 1:1500
• EZOLV: 1:100
Note:
• Set n8-57 = 1 [HFI Overlap Selection = Enabled] for this Speed Control Range in AOLV/PM. When you use a non-Yaskawa PM motor, do Rotational
Auto-Tuning.
• Speed control range of 1:100 for AOLV/PM is Instantaneous operation range. Correctly select the drive and motor capacity for continuous operation.
Possible in these control methods:
• CLV
Zero Speed Control
• AOLV/PM
• CLV/PM
You can use parameter settings for 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
Acceleration and
Deceleration Times
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 you operate the drive with:
• 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:
• Models 2004 to 2138 and 4002 to 4168 have a built-in 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 Characteristics
Select from 15 pre-defined V/f patterns, or a user-set V/f pattern.
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 (maximum), 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
Main Control
Jump, Upper/Lower Limits for Frequency Reference, DC Injection Braking at Start and Stop, Overexcitation Braking, High Slip Braking, PID Control (with
Functions
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
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
Note:
• If output frequency < 6 Hz, the drive can trigger the overload protection function when the output current is in the overload tolerance range.
• Derating can be necessary for applications that start and stop frequently.
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Specification
Table 10.12 Protection Functions
Specification
10.6 Drive Specifications
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