Omron SYSDRIVE 3G3RV, User Manual

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Stopping Methods ...................................................................................... 6-14
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Selecting the Stopping Method..................................................................................... 6-14
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Using the DC Injection Brake ....................................................................................... 6-17
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Using a Deceleration Stop from an External Input ....................................................... 6-18
Acceleration and Deceleration Characteristics .......................................... 6-19
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Setting Acceleration and Deceleration Times............................................................... 6-19
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Accelerating and Decelerating Heavy Loads (Dwell Function) .................................... 6-22
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Preventing the Motor from Stalling During Acceleration
(Stall Prevention During Acceleration Function) ........................................................... 6-23
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Preventing Overvoltage During Deceleration
(Stall Prevention During Deceleration Function) .......................................................... 6-25
Adjusting Frequency References ............................................................... 6-27
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Adjusting Analog Frequency References ..................................................................... 6-27
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Operation Avoiding Resonance (Jump Frequency Function)....................................... 6-29
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Adjusting Frequency Reference Using Pulse Train Inputs ........................................... 6-30
Speed Limit (Frequency Reference Limit Function) ................................... 6-32
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Limiting Maximum Output Frequency........................................................................... 6-32
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Limiting Minimum Frequency ....................................................................................... 6-32
Improved Operating Efficiency ................................................................... 6-34
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Reducing Motor Speed Fluctuation (Slip Compensation Function).............................. 6-34
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Compensating for Insufficient Torque at Startup and Low-speed Operation
(Torque Compensation) ................................................................................................ 6-36
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Hunting-prevention Function ........................................................................................ 6-38
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Stabilizing Speed (Speed Feedback Detection Function) ............................................ 6-39
Machine Protection .................................................................................... 6-40
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Limiting Motor Torque (Torque Limit Function) ............................................................. 6-40
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Preventing Motor Stalling During Operation ................................................................. 6-42
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Changing Stall Prevention Level during Operation Using an Analog Input .................. 6-43
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Detecting Motor Torque ................................................................................................ 6-43
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Changing Overtorque and Undertorque Detection Levels Using an Analog Input ....... 6-46
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Motor Overload Protection ........................................................................................... 6-47
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Motor Overheating Protection Using PTC Thermistor Inputs ....................................... 6-50
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Limiting Motor Rotation Direction ................................................................................. 6-51
Continuing Operation ................................................................................. 6-52
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Restarting Automatically After Power Is Restored........................................................ 6-52
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Speed Search............................................................................................................... 6-53
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Continuing Operation at Constant Speed When Frequency Reference Is Lost ........... 6-58
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Restarting Operation After Transient Fault (Auto Restart Function) ............................ 6-58
Inverter Protection ...................................................................................... 6-60
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Performing Overheating Protection on Mounted Braking Resistors ............................. 6-60
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Reducing Inverter Overheating Pre-Alarm Warning Levels ......................................... 6-61
Input Terminal Functions ............................................................................ 6-62
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Temporarily Switching Operation between Digital Operator
and Control Circuit Terminals ....................................................................................... 6-62