Omron Varispeed E7

V
7 Troubleshooting ..................................................................... 7-1
Protective and Diagnostic Functions ...........................................................7-2

Fault Detection ...............................................................................................................7-2
 Alarm Detection .............................................................................................................7-8
 Operator Programming Errors .....................................................................................7-11
 Autotuning Faults ........................................................................................................7-13
 Digital Operator Copy Function Faults .........................................................................7-13
Troubleshooting .........................................................................................7-15

If Parameters Cannot Be Set .......................................................................................7-15
 If the Motor Does Not Operate .....................................................................................7-16
 If the Direction of the Motor Rotation is Reversed .......................................................7-17
 If the Motor Does Not Put Out Torque or If Acceleration is Slow .................................7-17
 If the Motor Operates at Higher Speed than the Frequency Reference ......................7-17
 If Motor Deceleration is Slow .......................................................................................7-18
 If the Motor Overheats .................................................................................................7-18
 If peripheral devices like PLCs or other are influenced
by the starting or running inverter 7-................................................................................19
 If the Earth Leakage Breaker Operates when a RUN Command is Input ...................7-19
 If There is Mechanical Oscillation ................................................................................7-19
 If the Motor Rotates Even When Inverter Output is Stopped .......................................7-20
 If OV (Overvoltage) or OC (Overcurrent) is Detected
When a Fan is Started, or a Fan Stalls ........................................................................7-20
 If Output Frequency Does Not Rise to Frequency Reference .....................................7-20
8 Maintenance and Inspection.................................................. 8-1
Maintenance and Inspection ........................................................................8-2

Periodic Inspection ........................................................................................................8-2
 Periodic Maintenance of Parts .......................................................................................8-4
 Cooling Fan Replacement Outline .................................................................................8-5
 Removing and Mounting the Control Circuit Terminal Card ..........................................8-7
9 Specifications ......................................................................... 9-1
Standard Inverter Specifications ..................................................................9-2

Specifications by Model .................................................................................................9-2
 Common Specifications .................................................................................................9-5
10 Appendix ............................................................................... 10-1
Inverter Application Precautions ................................................................10-2

Selection ......................................................................................................................10-2
 Installation ....................................................................................................................10-2
 Settings ........................................................................................................................10-3
 Handling .......................................................................................................................10-3
Motor Application Precautions ...................................................................10-4

Using the Inverter for an Existing Standard Motor .......................................................10-4
 Using the Inverter for Special Motors ..........................................................................10-5
 Power Transmission Mechanism (Speed Reducers, Belts and Chains) .....................10-5
User Parameters .......................................................................................10-6