11 Drive Control, Duty Modes, and Programming
68 YASKAWA TOEPC71061737B GA800 Drive Installation & Primary Operation
Control Method A1-02 Main Applications
V/f 0
• General variable-speed. Best method to operate more than one motor from one drive.
• When motor parameters are not available.
OLV
2
(Default)
• General variable-speed
• High precision and high speed response without speed feedback
EZOLV 8
• General variable-speed
• No high precision, no high speed response, and no speed feedback
◆ Drive Duty Modes
The drive has two duty modes from which to select for the application: Heavy Duty (HD) and Normal Duty (ND).
• The input power kVA
• The maximum applicable motor output
• The rated input current
• The rated output capacity
• The rated output current
Note:
The reference for the parameter set as a percentage of the drive rated output current is the rated output current of HD/ND.
Refer to Table 11.1 for information about the differences between HD and ND ratings.
Table 11.1 Drive Duty Modes
Duty Rating
C6-01
Setting
Application Default Carrier Frequency
Overload Tolerance (oL2 [Drive
Overload])
Heavy Duty Rating
(HD)
0
• Extruder
• Conveyor
• Constant torque or high overload capacity
2 kHz
150% of the rated output current for
60 seconds The permitted frequency
of overload is one time each 10
minutes.
Normal Duty Rating
(ND)
1
• Fan
• Pump
• Blower
• Variable speed control
2 kHz Swing-PWM
110% of the rated output current for
60 seconds The permitted frequency
of overload is one time each 10
minutes.
◆ Auto-Tuning
WARNING
Crush Hazard. Rotational Auto-Tuning rotates the motor at 50% or more of the motor rated frequency. Make sure
that there are no issues related to safety in the area around the drive and motor. Increased motor frequency can cause serious
injury or death.
WARNING
Sudden Movement Hazard.. Before you do Rotational Auto-Tuning, disconnect the load from the motor. The load
can move suddenly and cause serious injury or death.
Auto-Tuning automatically sets parameters on the drive connected to the motor. You must input some parameters
individually during Auto-Tuning.
1. Select [Auto-Tuning] from the main menu to select the Auto-Tuning Mode.
2. Use the information in Table 11.2 and Table 11.3 to set T1-01 [Auto-Tuning Mode Selection] and T4-01 [EZ
Tuning Mode Selection].
3. Push to start Auto-Tuning.
Refer to the Technical Manual for more information about Auto-Tuning.
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