FAQ# DRV-5WB2R6 Published: 07/13/2004
Question:When entering Motor Rated Current (parameter E2-01) into an E7 drive, an OPE02 fault appears on the display. What can cause this, and how is the fault cleared?
Answer:
  • ONE POSSIBLE CAUSE:
    The drive requires the Full Load Amperage value in E2-01 to always be greater than the No Load Current value in E2-03. If this requirement is not met, an OPE02 fault will occur.

    The drive compares the value entered into E2-01 to the "No Load Current" value in parameter E2-03. E2-03 is factory preset according to the drives capacity rating.

    One reason for attempting to enter an E2-01 value that is less than E2-03 may be that the drive is oversized for the motor. In such case, parameter E2-01 can be set as low as 10% of the Drive output current rating. This parameter represents the Full Load Amperage of the motor and the drive uses this value to protect the motor against over loaded conditions.
  • HOW TO CLEAR:
    To remedy this situation, the value in E2-03 can be lowered until the drive accepts the value being put into E2-01.

    For additional information on parameter E2-01 (Motor Rated Current), and its requirements, please refer to page 5-31 of the E7 User Manual.


Product Information:

Product Group:Inverters/Drives
Product:E7 Drive
Applications:HVAC
Category:Alarm; Programming; Troubleshooting
Part/Model#: CIMR-E7

Other Information:

Link to related files:E7 Drive User Manual

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