Instruction manual

82
Errors (Alarms)
Control Panel
Indication
PS FR-PU04V PS
Name
PU stop
Description
Appears when a stop was made by pressing of the control panel or parameter unit
(FR-PU04V) during operation in the external operation mode with the Pr. 75 "reset selection/PU
stop selection" setting.
Check point
Check for a stop made by pressing of the control panel during external operation.
Corrective action
Refer to page 83.
Control Panel
Indication
RB FR-PU04V RB
Name
Regenerative brake prealarm
Description
Appears if the regenerative brake duty reaches or exceeds 85% of the Pr. 70 "special regenerative
brake duty" value. If the regenerative brake duty reaches 100%, a regenerative overvoltage
(E. OV_) occurs.
Check point
• Check that the brake resistor duty is not high.
• Check that the Pr. 30 "regenerative function selection" and Pr. 70 "special regenerative brake
duty" values are correct.
Corrective action
• Increase the deceleration time.
• Check the Pr. 30 "regenerative function selection" and Pr. 70 "special regenerative brake duty"
values.
Control Panel
Indication
TH FR-PU04V TH
Name
Electronic thermal relay function prealarm
Description
Appears if the cumulative value of the electronic thermal relay function reaches or exceeds 85% of
the preset level. If it reaches 100% of the preset level, a motor overload shutoff (E. THM) occurs.
Check point
Check for large load or sudden acceleration.
Corrective action
Reduce the load weight or the number of operation times.
Control Panel
Indication
MT FR-PU04V MT
Name
Maintenance signal output
Description
Indicates that the cumulative operation time of the inverter has reached a given time.
Check point
Check that Pr. 890 "maintenance output set time" has been set. (A short time has been set.)
Corrective action
After checking the energization time, write "0" to Pr. 892 "maintenance output signal clear".
Control Panel
Indication
SL FR-PU04V SL
Name
Speed limit indication (speed limit)
Description
Output if the speed limit level is exceeded during torque control.
Check point
• Check that the torque command is not larger than required.
• Check that the speed limit level is not low.
Corrective action
Decrease the torque command. Increase the speed limit level.
Control Panel
Indication
Err.
Description
This alarm appears if:
• The RES signal is on;
• You attempted to make parameter setting in the external operation mode;
• You attempted to change the operation mode during operation;
• You attempted to set any parameter value outside its setting range;
• The PU and inverter cannot make normal communication;
• You attempted to make parameter setting during operation (when signal STF or STR is on);
• You attempted to make parameter setting when Pr. 77 "parameter write disable selection" has
been set to disable parameter write; or
• The main circuit power is turned on when the control circuit power (R1, S1) and the main circuit
power (R, S, T) are connected to a separate power. It is not a fault.
Corrective action
Perform run and operation securely.
STOP
RESET
STOP
RESET