YASKAWA Varispeed E7 Instruction Manual And Parameter Description page 8

Using MEMOBUS Communications............................................................... 6-68
Using the Timer Function ............................................................................... 6-82
Using PI Control ............................................................................................. 6-83
Energy-saving ................................................................................................ 6-93
Setting Motor Constants................................................................................. 6-94
Setting the V/f Pattern .................................................................................... 6-95
High Slip Braking.......................................................................................... 6-101
Digital Operator Functions ........................................................................6-102
Setting Digital Operator Functions ............................................................... 6-102
Copying Constants ....................................................................................... 6-105
Prohibiting Writing Constants from the Digital Operator............................... 6-109
Setting a Password ...................................................................................... 6-109
Displaying User-set Constants Only............................................................. 6-110
7 Troubleshooting...................................................................... 7-1
Protective and Diagnostic Functions ............................................................7-2
Fault Detection ................................................................................................. 7-2
Alarm Detection................................................................................................ 7-7
Operation Errors............................................................................................... 7-9
Errors During Autotuning................................................................................ 7-10
Errors when Using the Digital Operator Copy Function ................................. 7-10
Troubleshooting ..........................................................................................7-12
If Constants Cannot Be Set............................................................................ 7-12
If the Motor Does Not Operate ....................................................................... 7-13
If the Direction of the Motor Rotation is Reversed ......................................... 7-14
If the Motor Does Not Put Out Torque or If Acceleration is Slow ................... 7-14
If the Motor Operates at Higher Speed than the Frequency Reference......... 7-14
If Motor Deceleration is Slow ......................................................................... 7-15
If the Motor Overheats ................................................................................... 7-15
If peripheral devices like PLC's or other are influenced by the starting
or running inverter .......................................................................................... 7-16
If the Earth Leakage Breaker Operates when a RUN Command is Input...... 7-16
If There is Mechanical Oscillation .................................................................. 7-16
If the Motor Rotates Even When Inverter Output is Stopped ......................... 7-17
If OV (Overvoltage) or OC (Overcurrent) is Detected When a Fan
is Started, or Fan Stalls .................................................................................. 7-17
If Output Frequency Does Not Rise to Frequency Reference........................ 7-17
8 Maintenance and Inspection.................................................. 8-1
Maintenance and Inspection.........................................................................8-2
Outline of Maintenance .................................................................................... 8-2
Daily Inspection................................................................................................ 8-2
Periodic Inspection........................................................................................... 8-2
Periodic Maintenance of Parts ......................................................................... 8-3
Cooling Fan Replacement Outline ................................................................... 8-4
Removing and Mounting the Control Circuit Terminal Card ............................. 8-6
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