167
5
PROTECTIVE FUNCTIONS
Note:2. This function is activated only when OH has been set to any of Pr. 180 to Pr.
183 (input terminal function selection).
Operation Panel Indication
E. FIN
FR-PU04-MGI
H/Sink O/Temp
Name
Fin overheat
Description
If the heatsink overheats, the temperature sensor is actuated
to stop the inverter output.
Check point
• Check for too high ambient temperature.
• Check for heatsink clogging.
Corrective action
Set the ambient temperature to within the specifications.
Operation Panel Indication
E. BE
FR-PU04-MGI
Br. Cct. Fault
(Note)
Name
Brake transistor alarm detection
Description
If a brake transistor fault occurs due to excessively large
regenerative energy from the motor, for example, that fault is
detected to stop the inverter output. In this case, the inverter
power must be switched off immediately.
Check point
Check for improper braking duty.
Corrective action
Change the inverter.
Please contact your sales representative.
Operation Panel Indication
E. GF
FR-PU04-MGI
Ground Fault
Name
Output side ground fault overcurrent protection
Description
This function stops the inverter output if a ground fault overcurrent
flows due to a ground fault which occurred in the inverter's output
(load) side.
Check point
Check for a ground fault in the motor and connection cable.
Corrective action
Remedy the ground fault portion.
Operation Panel Indication
E. OHT
FR-PU04-MGI
OH Fault
Name
External thermal relay operation (Note 2)
Description
If the external thermal relay provided for motor overheat
protection or the internally mounted temperature relay in the
motor switches on (contacts open), the inverter output is
stopped. If the relay contacts are reset automatically, the
inverter will not restart unless it is reset.
Check point
•Check for motor overheating.
•Check that the value of "7" (OH signal) is set correctly in any
of Pr. 180 to Pr. 183 (input terminal function selection).
Corrective action
Reduce the load and operating duty.
M4500E.book 167 ページ 2005年2月22日 火曜日 午後5時7分
Summary of Contents for M4000E series
Page 11: ...MEMO ...
Page 23: ...12 MEMO ...
Page 55: ...44 MEMO ...
Page 173: ...162 MEMO ...
Page 199: ...188 MEMO ...