Yaskawa Matrix Converter User Manual
Page 16
xiv
Machine Protection .................................................................................... 6-38
Reducing Noise and Leakage Current ......................................................................... 6-38
Limiting Motor Torque (Torque Limit Function) ............................................................ 6-40
Stall Prevention during Run.......................................................................................... 6-43
Changing Stall Prevention Level during Run Using an Analog Input ........................... 6-44
Using Frequency Detection: L4-01 to L4-05................................................................. 6-44
Detecting Motor Torque ................................................................................................ 6-48
Changing Overtorque and Undertorque Detection Levels Using an Analog Input ....... 6-50
Motor Overload Protection ........................................................................................... 6-51
Setting Motor Protection Operation Time ..................................................................... 6-53
Motor Overheating Protection Using PTC Thermistor Inputs ....................................... 6-54
Limiting Motor Rotation Direction ................................................................................. 6-55
Continuing Operation ................................................................................. 6-56
Restarting Automatically after Power is Restored ........................................................ 6-56
Speed Search............................................................................................................... 6-59
Continue Running after Frequency Reference Loss .................................................... 6-64
Restarting Operation after Transient Fault (Auto-Restart Function)............................. 6-65
MxC Protection........................................................................................... 6-66
Reducing MxC Overheating Pre-Alarm Warning Levels .............................................. 6-66
Input Terminal Functions ............................................................................ 6-67
Temporarily Switching Operation between Digital Operator and Control Circuit
Terminals ...................................................................................................................... 6-67
Blocking MxC Outputs (Baseblock Commands) .......................................................... 6-68
Stopping Acceleration and Deceleration (Accel/Decel Ramp Hold)............................. 6-69
Raising and Lowering Frequency References Using Contact Signals (UP/DOWN) .... 6-70
Accelerating and Decelerating Parameter Frequencies in the Analog References
(+/- Speed) ................................................................................................................... 6-73
Hold Analog Frequency Using User-set Timing ........................................................... 6-74
Switching Operations between a Communications Option Card and Control Circuit
Terminals ...................................................................................................................... 6-74
Jog Frequency Operation without Forward and Reverse Commands (FJOG/RJOG) . 6-75
Stopping the MxC by Notifying Programming Device Errors to the MxC
(External Fault Function) .............................................................................................. 6-76
Output Terminal Functions ......................................................................... 6-77
Monitor Parameters.................................................................................... 6-79
Using the Analog Monitor Parameters ......................................................................... 6-79
Individual Functions ................................................................................... 6-82
Using MEMOBUS Communications............................................................................. 6-82
Using the Timer Function ............................................................................................. 6-93
Using PID Control......................................................................................................... 6-94
Setting Motor Parameters .......................................................................................... 6-102
Setting the V/f Pattern ................................................................................................ 6-104
Torque Control ........................................................................................................... 6-108
Speed Control (ASR) Structure .................................................................................. 6-115
Increasing the Speed Reference Response (Feed Forward Control) ........................ 6-120
Droop Control Function .............................................................................................. 6-121