18-48
Chapter 18
Tips/FAQ/Troubleshooting
S18: The earth
leakage circuit
breaker is
activated as the
inverter is
operated.
• Lower the carrier frequency [bb101].
• Raise the sensitivity current in the earth leakage circuit
breaker, or replace the breaker with the one with higher
sensitivity current.
• Leakage currents in the
inverter are large.
S19: DC braking
is disabled.
• Set DC braking force at the time of the stop [AF105] and DC
braking force at the start [AF108].
• The DC braking force is not set.
• Set DC braking time at the time of the stop [AF106] and DC
braking time at the start [AF109].
• The DC braking time is not set.
S20: TV and radio
have noises near
the inverter.
• Locate the inverter wires as far as possible from a TV and
radio.
• Install ZCL to the main power supply input and output of the
inverter.
• Radiation noise from the
inverter
S17:
Operation/setting
of Modbus
communication
cannot be made.
• If you changed [CF-01] to [CF-38], turn OFF the control
power supply and restart.
• Changes made to
communication parameters
haven’t been reflected.
• Check that operation command selection [AA111] is set to 03
(RS485).
• The operation command
selection is not set to RS485.
• Check that the main speed command selection [AA111] is set
to 03 (RS485).
• The frequency command
selection is not set to RS485.
• Set the correct value in [CF-01], then turn OFF the control
power supply and restart.
• The communication speed
setting is wrong.
• Set the correct value in [CF-02], then turn OFF the control
power supply and restart.
• Station numbers are wrongly set
or overlapping each other.
• Set the correct value in [CF-03], then turn OFF the control
power supply and restart.
• The communication parity
setting is wrong.
• Set the correct value in [CF-04], then turn OFF the control
power supply and restart.
• The communication stop bit
setting is wrong.
• Connect wires properly to the SP and SN terminals on the
control circuit terminal block.
• Wiring is wrong,
Occurrence
Estimated cause(s)
Exemplar measures to be taken
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 ...