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VFD68 Variable Frequency Drives
68
Table 64: Retry Count Excess
Operation
Panel
Indication
E.RET
Description
If operation cannot be resumed properly within the number of retries set, this function trips the VFD.
This function is available only when P. 67 is set to a value other than 0. When P. 67 is set to 0, this
protective function does not function. P. 67 is factory-set to 3.
Check Point
Find the cause of fault occurrence.
Corrective
Action
Eliminate the cause of the error preceding this error indication.
Table 65: CPU Fault
Operation
Panel
Indication
E.5
E.CPU
Description
Stops the VFD output if the communication fault of the built-in CPU occurs.
Check Point
Check for devices producing excess electrical noises around the VFD.
Corrective
Action
Take measures against noises if there are devices producing excess electrical noises around the
VFD.
Contact PENN by Johnson Controls Application Engineering at 1-414-524-5535 or
1-800-275-5676.
Table 66: Inrush Current Limit Circuit Fault
Operation
Panel
Indication
E.IOH
Description
This function is activated when the resistor of the inrush current limit circuit overheats.
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.
Table 67: Analog Input Fault
Operation
Panel
Indication
E.AIE
Description
Appears if voltage (current) is input to terminal 4 when the setting in P.267 and the setting of the
voltage/current input switch are different.
Check Point
Check the setting of P.267 and the voltage/current input switch.
Corrective
Action
Either give a frequency command by current input or set P.267, and voltage/current input switch to
voltage input.
Table 68: Safety Circuit Fault
Operation
Panel
Indication
E.SAF
Description
Appears when safety circuit is malfunctioning.
Appears when one of the lines between S1 and SC, or between S2 and SC is opened.
Check Point
Verify that the jumper wire connects together terminals S1, S2, and SC.
Corrective
Action
Connect terminals S1, S2, and SC.