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Mitsubishi Electric FR-E500 Instruction Manual Page 182

Fr-e500 series transistorized inverter.
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Operation Panel Indication
Name
Description
Check point
Corrective action
Operation Panel Indication
Name
Description
Check point
Corrective action
Note: 2 This function is activated only when the optional brake resistor is connected.
Operation Panel Indication
Name
Description
Check point
Corrective action
Operation Panel Indication
Name
Description
Check point
Corrective action
Note: 3 The output terminals used must be allocated using Pr. 190 to Pr. 192. This
function is activated only when OH has been set to any of Pr. 180 to Pr. 183
(input terminal function selection).
E. FIN
Fin overheat
If the cooling fin overheats, the overheat sensor is actuated
to stop the inverter output.
• Check for too high ambient temperature.
• Check for cooling fin clogging.
Set the ambient temperature to within the specifications.
E. BE
Brake transistor alarm detection (Note 2)
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 for improper braking duty.
Change the inverter.
Please contact your sales representative.
E. GF
Output side ground fault overcurrent protection
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. Use Pr. 249 "ground fault
detection at start" to set whether the protective function is to
be activated or not. (In the 400V class, the protective function
is always active.)
Check for a ground fault in the motor and connection cable.
Remedy the ground fault portion.
E. OHT
External thermal relay operation (Note 3)
If the external thermal relay designed 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 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).
Reduce the load and operating duty.
166
PROTECTIVE FUNCTIONS
FR-PU04
H/Sink O/Temp
FR-PU04
Br. Cct. Fault (Note)
FR-PU04
Ground Fault
FR-PU04
OH Fault
5

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