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Mitsubishi Electric FR-F720P-0.75K Instruction Manual Page 134

Fr-f700p series.
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Operation Panel
E.PTC
Indication
Name
PTC thermistor operation
Trips when the motor overheat status is detected for 10s or more by the external PTC thermistor input
connected to the terminal AU.
Description
This fault is available when "63" is set in Pr. 184 AU terminal function selection and AU/PTC switchover
switch is set in PTC side. When the initial value (Pr. 184 = "4") is set, this protective function is not
available.
· Check the connection between the PTC thermistor switch and thermal relay protector.
· Check the motor for operation under overload.
Check point
· Is valid setting ( = 63) selected in Pr. 184 AU terminal function selection ? (
Instruction Manual (Applied).)
Corrective action
Reduce the load weight.
Operation Panel
E.OPT
Indication
Name
Option fault
· Appears when the AC power supply is connected to the terminal R/L1, S/L2, T/L3 accidentally when
a high power factor converter is connected.
Description
· Appears when the switch for the manufacturer setting of the plug-in option is changed.
· Appears when a communication option is connected while Pr. 296 Password lock level = "0 or 100."
· Check that the AC power supply is not connected to the terminal R/L1, S/L2, T/L3 when a high
power factor converter (FR-HC, MT-HC) or power regeneration common converter (FR-CV) is
Check point
connected.
· Check if password lock is activated by setting Pr. 296 = "0, 100"
· Check the parameter (Pr. 30) setting and wiring.
· The inverter may be damaged if the AC power supply is connected to the terminal R/L1, S/L2, T/L3
when a high power factor converter is connected. Please contact your sales representative.
· Return the switch for the manufacturer setting of the plug-in option to the initial status. (
Corrective action
Chapter 4 of the Instruction Manual (Applied).)
· To apply the password lock when installing a communication option, set Pr.296 ≠ "0,100". (
to Chapter 4 of the Instruction Manual (Applied).).
· If the problem still persists after taking the above measure, please contact your sales representative.
Operation Panel
E.OP1
Indication
Name
Communication option fault
Description
Stops the inverter output when a communication line fault occurs in the communication option.
· Check for a wrong option function setting and operation.
· Check that the plug-in option is plugged into the connector securely.
Check point
· Check for a break in the communication cable.
· Check that the terminating resistor is fitted properly.
· Check the option function setting, etc.
Corrective action
· Connect the plug-in option securely.
· Check the connection of communication cable.
Operation Panel
E. 1
Indication
Name
Option fault
Stops the inverter output if a contact fault or the like of the connector between the inverter and
Description
communication option occurs.
Appears when the switch for the manufacturer setting of the plug-in option is changed.
· Check that the plug-in option is plugged into the connector securely.
Check point
· Check for excess electrical noises around the inverter.
· Connect the plug-in option securely.
· Take measures against noises if there are devices producing excess electrical noises around the
inverter.
Corrective action
If the problem still persists after taking the above measure, please contact your sales representative
or distributor.
· Return the switch position for the manufacturer setting of the plug-in option to the initial status. (
Refer to instruction manual of each option)
Causes and corrective actions
FR-PU04
Fault 14
FR-PU07
PTC activated
FR-PU04
Option Fault
FR-PU07
FR-PU04
Option 1 Fault
FR-PU07
FR-PU04
Fault 1
FR-PU07
Refer to Chapter 4 of the
Refer to
Refer
127
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