IV
Motor Overheat Protection Using PTC Thermistor Inputs ...........................................6-35
Limiting Motor Rotation Direction and Output Phase Rotation ....................................6-37
Automatic Restart ......................................................................................6-38
Restarting Automatically After Momentary Power Loss ..............................................6-38
Speed Search ............................................................... ... ........................................ ....6-39
Continuing Operation at Constant Speed When Frequency Reference Is Lost .......... 6-44
Restarting Operation After Transient Fault (Auto Restart Function) ................. ... ... ....6-45
Inverter Protection .....................................................................................6-47
Inverter Overheat Protection .......................................................................................6-47
Input Phase Loss Detection Level ...............................................................................6-48
Ground Fault Protection ..............................................................................................6-48
Cooling Fan Control ....................................................................................................6-49
Setting the Ambient Temperature ........................................................................ .......6-49
OL2 Characteristics at Low Speed ..............................................................................6-50
Soft CLA Selection ......................................................................................................6-51
Input Terminal Functions ...........................................................................6-52
Temporarily Switching Operation between Digital Operator
and Control Circuit Terminals ......................................................................................6-52
Blocking the Inverter Output (Baseblock Command) .................................................. 6-53
Multifunction Analog Input A2 Disable/Enable ............................................................6-53
Drive Enable/Disable ...................................................................................................6-54
Bypass Drive Enable ...................................................................................................6-54
Stopping Acceleration and Deceleration
(Acceleration/Deceleration Ramp Hold) ...................................................................... 6-54
Raising and Lowering Frequency References Using
Digital Input Signals (UP/DOWN) ................................................................................6-55
Trim Control Function ..................................................................................................6-58
Analog Frequency Reference Sample/Hold ................................................................6-59
Switching Operation Source to Communication Option Card .....................................6-60
Switching Operation Source to MEMOBUS communication .......................................6-60
AUTO/HAND Mode Switching by Digital Input ............................................................6-61
Jog Frequency Operation without Forward and Reverse Commands (FJOG/RJOG) 6-62
Stopping the Inverter on External Faults (External Fault Function) .............................6-63
Output Terminal Functions ........................................................................6-64
Monitor Parameters ...................................................................................6-67
Using the Analog Monitor Parameters ........................................................................6-67
Individual Functions ..................................................................................6-69
Using MEMOBUS Communications ............................................................................6-69
Using the Timer Function ............................................................................................6-86
Using PI Control ..........................................................................................................6-87
Energy-saving .............................................................................................................6-98
Setting Motor Parameters ................ ... ... .......................................... ...........................6-99
Setting the V/f Pattern ...............................................................................................6-100
Motor Preheat Function .............................................................................................6-106
Emergency Override Function ...................................................................................6-108
High Slip Braking .......................................................................................................6-109
Digital Operator Functions ......................................................................6-110
Setting Digital Operator Functions ............................................................................6-110
Copying Parameters ..................................................................................................6-113
Prohibiting Writing Parameters from the Digital Operator .........................................6-117
Setting a Password ...................................................................................................6-117
Displaying User-set Parameters Only ....................................................................... 6-118