18-47
Chapter 18
Tips/FAQ/Troubleshooting
S15: Torque is
not generated.
• Use torque boost, sensorless vector control, or other control
instead.
• V/f control is used.
• Use a braking resistor or regenerative braking unit if the
torque is not sufficient for regenerative operation.
• The inverter is used for
lowering.
• Re-examination of capacity of both motor and inverter may
be required.
• The load is too heavy.
Occurrence
Estimated cause(s)
Exemplar measures to be taken
S14: Output
frequency
becomes
unstable.
• Find out the basic parameter settings for motor and set them
accordingly.
• Inadequate parameters are
used.
• Re-examination of capacity of both motor and inverter may
be required.
• Load fluctuates significantly.
• Use of the optional reactor ALI or DCL, or a noise filter on the
input side to minimize the power fluctuation may improve the
situation.
• PS voltage fluctuates.
S16: Operator
keypad
disconnection
error is issued.
• Set the operation selection at disconnection of operator to
02 (Ignore).
• Operation selection at
disconnection of operator is
inappropriate.
Summary of Contents for SJ Series
Page 39: ...5 4 Chapter 5 Included Items Memo ...
Page 55: ...6 16 Chapter 6 Installation Memo ...
Page 91: ...7 36 Chapter 7 Wire Connection and Optional Devices Memo ...
Page 135: ...9 40 Chapter 9 Operating Instructions Memo ...
Page 145: ...10 10 Chapter 10 Test Run Memo ...
Page 159: ...12 2 6 Chapter 12 Inverter Functions Memo ...
Page 169: ...12 3 10 Chapter 12 Inverter Functions Memo ...
Page 195: ...12 5 8 Chapter 12 Inverter Functions Memo ...
Page 217: ...12 8 12 Chapter 12 Inverter Function Memo ...
Page 287: ...12 10 32 Chapter 12 Inverter Functions Memo ...
Page 303: ...12 11 16 Chapter 12 Inverter Functions Memo ...
Page 349: ...12 15 8 Chapter 12 Inverter Function Memo ...
Page 395: ...12 17 34 Chapter 12 Inverter Functions Memo ...
Page 397: ...12 18 2 Chapter 12 Inverter Functions Memo ...
Page 415: ...12 19 18 Chapter 12 Inverter Function Memo ...
Page 581: ...15 10 Chapter 15 Optional Cassettes Memo ...
Page 591: ...16 10 Chapter 16 ProDriveNext EzSQ Memo ...
Page 642: ...18 49 Chapter 18 Tips FAQ Troubleshooting Memo ...
Page 650: ...19 8 Chapter 19 Maintenance and Inspection Memo ...
Page 781: ...Appendix 1 70 Appendix 1 List of Parameters Memo ...