Mitsubishi Electric FR-D700 Series, Инструкция по эксплуатации

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253
5
TROUBLES
HOOTING
Causes and corrective actions
Operation panel
indication
E.PUE
FR-PU04
FR-PU07
PU Leave Out
Name PU disconnection
Description
This function stops the inverter output if communication between the inverter and PU is suspended, e.g. the
parameter unit (FR-PU04/FR-PU07) is disconnected, when "2", "3", "16" or "17" was set in
Pr. 75 Reset selection/
disconnected PU detection/PU stop selection .
This function stops the inverter output when communication errors occurred consecutively for more than permissible
number of retries when a value other than "9999" is set in
Pr. 121 Number of PU communication retries during the RS-
485 communication with the PU connector (use Pr. 502 Stop mode selection at communication error to change).
This function also stops the inverter output if communication is broken within the period of time set in Pr. 122 PU
communication check time interval
during the RS-485 communication with the PU connector.
Check point
Check that the parameter unit cable is fitted tightly.
Check the
Pr. 75 setting.
Check that RS-485 communication data is correct. And check that the settings of communication parameter at
inverter match settings of the computer.
Check that data is transmitted from the computer within a time set in
Pr. 122 PU communication check time interval .
Corrective action
Connect the parameter unit cable securely.
Check the communication data and communication settings.
Increase the
Pr. 122 PU communication check time interval setting. Or set "9999" (no communication check).
Operation panel
indication
E.RET
FR-PU04
FR-PU07
Retry No Over
Name
Retry count excess
Description
If operation cannot be resumed properly within the number of retries set, this function trips the inverter.
Functions only when
Pr. 67 Number of retries at fault occurrence is set.
When the initial value ( Pr. 67 = "0") is set, this protective function does not function.
Check point
Find the cause of fault occurrence.
Corrective action
Eliminate the cause of the error preceding this error indication.
Operation panel
indication
E.CPU
FR-PU04
FR-PU07
CPU Fault
Name CPU fault
Description Stops the inverter output if the communication fault of the built-in CPU occurs.
Check point
Check for devices producing excess electrical noises around the inverter.
Corrective action
Take measures against noises if there are devices producing excess electrical noises around the inverter.
Please contact your sales representative.
Operation panel
indication
E.CDO
FR-PU04 Fault 14
FR-PU07 OC detect level
Name
Output current detection value exceeded
Description
This function is activated when the output current exceeds the Pr. 150 Output current detection level setting.
Check point
Check the settings of Pr. 150 Output current detection level , Pr. 151 Output current detection signal delay time , Pr. 166 Output
current detection signal retention time
,
Pr. 167 Output current detection operation selection
. (
Refer to page 119
)
Operation panel
indication
E.IOH
FR-PU04 Fault 14
FR-PU07 Inrush overheat
Name Inrush current limit circuit fault
Description This function is activated when the resistor of the inrush current limit circuit overheats. The inrush current limit circuit fault
Check point
Check that frequent power ON/OFF is not repeated.
Corrective action
Configure a circuit where frequent power ON/OFF is not repeated.
If the problem still persists after taking the above measure, please contact your sales representative.
Operation panel
indication
E.AIE
FR-PU04 Fault 14
FR-PU07 Analog in error
Name
Analog input fault
Description Appears when 30mA or more is input or a voltage (7.5V or more) is input with the terminal 4 set to current input.
Check point Check the setting of Pr. 267 Terminal 4 input selection and voltage/current input switch. (Refer to page 145).
Corrective action
Either give a frequency command by current input or set Pr. 267 Terminal 4 input selection , and voltage/current input
switch to voltage input.
NOTE
If protective functions of E.ILF, E.AIE, E.IOH, E.PTC, E.CDO are activated when using the FR-PU04, "Fault 14" is
displayed.
Also when the faults history is checked on the FR-PU04, the display is "E.14".
If faults other than the above appear, contact your sales representative.