Mitsubishi Electric FR-HC2-7.5K Instruction Manual page 134

Operation Panel
Indication
Name Model error
 Parameter write or parameter verification of the parameter copy function is performed to an invalid model.
Description
 When writing of copied parameters is attempted after reading of copied parameters is interrupted
 Check that the verifying converter is the same model.
 Check that the reading of copied parameter is not interrupted by switching OFF the power or by
Checkpoint
 Check if parameter copy writing is attempted while Pr. 77 Parameter write selection = "1".
 Perform parameter copy and parameter verification to the same model (FR-HC2 series).
Corrective action  Read the copied parameter again.
 Perform parameter copy writing by setting Pr. 77 Parameter write selection = "2".
Operation Panel
Indication
 When RES signal is ON.
 When the PU and the converter cannot make normal communication. (Contact faults of the connector)
Description  This error may occur when the voltage at the input side of the converter drops.
 When using a separate power source for the control circuit power (R1/L11, S1/L21) from the main circuit
 Turn OFF the RES signal.
Corrective action  Check the connection between the PU and the converter.
 Check the voltage on the input side of the converter.
(2) Warning
When a warning occurs, The converter continues its operation.
Operation Panel
Indication
Name
Overload signal detection
Description Appears when the current limit function of the converter activates.
 Check if the acceleration/deceleration time of the inverter is too short.
 Check that the load is not too heavy.
Checkpoint
 Are there any failure in peripheral devices?
 Check that the Pr. 22 Current limit level setting is appropriate. (Refer to page 79)
 Set the acceleration/deceleration time of the inverter longer.
 Reduce the load weight.
Corrective action
 Check that the peripheral devices are operating properly.
 Current limit level of the output current can be set with Pr. 22 Current limit level. (Initial setting is 150%.) Set
Operation Panel
Indication
Name
PU stop
Stop with
Description
refer to page 92.)
Checkpoint
Check for a stop made by pressing
Turn the converter stop signal (SOF) ON to stop the converter operation, and press
Corrective action
stop.
Operation Panel
Indication
Name
Electronic thermal relay pre-alarm
Appears if the cumulative value of the electronic thermal relay reaches or exceeds 85% of the preset level.
If it reaches 100% of the preset level, converter overload trip (E. THT) occurs.
Description THP signal can be simultaneously output with the [TH] display. For the terminal used for THP signal, set "8
(positive logic)" or "108 (negative logic)" to any of Pr. 11 to Pr. 16 (output terminal function selection). (Refer to
page 78)
Checkpoint
Check for large load or sudden acceleration.
Corrective action Reduce the load and frequency of operation.
rE4
disconnecting the operation panel.
Err.
power (R/L1, S/L2, T/L3), this error may appear at turning ON of the main circuit. It is not a fault.
OL
the current limit level higher with Pr. 22 Current limit level.
PS
of the PU is set in Pr. 75 Reset selection/disconnected PU detection/PU stop selection. (For Pr. 75,
TH
Causes and corrective actions
FR-PU07
FR-PU07
of the operation panel.
FR-PU07
OL
PS
to release the PU
4
TH
127