5 Specifications
YASKAWA TOEPC71061779D GA800 Drive Installation Manual 67
Item Specification
V/f Characteristics
Select from 15 pre-defined V/f patterns, or a user-set V/f pattern.
Main Control
Functions
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/
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 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
*1 PM control methods are not available on 600 V models.
Table 5.2 Protection Functions
Item Specification
Motor Protection
Electronic thermal overload protection
Momentary
Overcurrent
Protection
Drive stops when the output current is more than 200% of the HD output current.
Overload 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.
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 may be necessary for applications that start and stop frequently.
Overvoltage
Protection
200 V class: Stops when the DC bus voltage is more than approximately 410 V
400 V class: Stops when the DC bus voltage is more than approximately 820 V
600 V class: Stops when the DC bus voltage is more than approximately 1040 V
Undervoltage
Protection
200 V class: Stops when the DC bus voltage decreases to less than approximately 190 V
400 V class: Stops when the DC bus voltage decreases to less than approximately 380 V
600 V class: Stops when the DC bus voltage decreases to less than approximately 460 V
Momentary Power
Loss Ride-thru
Stops when power loss is longer than 15 ms.
Continues operation if power loss is shorter than 2 s (depending on parameter settings).
Note:
• Stop time may be shortened depending on the load and motor speed.
• Drive capacity will change the continuous operation time. A Momentary Power Loss Recovery Unit is necessary to continue operation through a 2 s
power loss on models 2004 to 2056 and 4002 to 4031.
Heatsink Overheat
Protection
The drive stops when the thermistor detects an IGBT temperature more than approximately 100 °C (212 °F). The trip temperature level is different for different
drive models.
Braking Resistor
Overheat Protection
Overheat detection for braking resistor (optional ERF-type, 3% ED)
Stall Prevention
Stall prevention is available during acceleration, deceleration, and during run.
Ground Fault
Protection
Electronic circuit protection
Note:
This protection detects ground faults during run. The drive will not provide protection when:
• There is a low-resistance ground fault for the motor cable or terminal block
• Energizing the drive when there is a ground fault.
DC Bus Charge LED
Charge LED illuminates when DC bus voltage is more than 50 V.
Braking Transistor
Built-in to models 2004 to 2138 and 4002 to 4168
DC Link Choke
Built-in to models 2110 to 2415, 4060 to 4720, and 5289 to 5472
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