IAI America RCP2-CF - Manual (Page 148)

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Code Error name Cause/Action
CE Drop in control supply
voltage This alarm indicates that the voltage of the 24-V input power supply
has dropped (24V – 20%: 19.2V or less).
Cause: [1] Low voltage of the 24-V input power supply
[2] Faulty part inside the controller
Action: Check the voltage of the input power supply.
If the voltage is normal, please contact IAI.
ED Absolute encoder error
(1)
Cause: [1] The battery voltage was 4.4 V or below when the power
was input.
[2] The current position has changed due to the effect of
vibration, etc., when the power was input.
Action: If code “7A” is displayed after the reset, the battery voltage is
low. Charge the batteries for at least 48 hours.
If “7A” is not displayed, turn off the power, and then turn it on
again by making sure the actuator does not vibrate.
Execute an absolute reset. (Note)
EE Absolute encoder error
(2)
The absolute counter data in the FPGA is damaged.
Cause: [1] The power was input for the first time after connecting the
batteries. (This message is always displayed at the initial
power on.)
[2] The parameter for home return direction or home return
offset was changed.
[3] The power supply was cut off for a prolonged period and
the battery voltage has dropped to a level at which the
absolute counter data can no longer be retained.
[4] The encoder cable or battery cable became open while
the power supply was cut off.
Action: If [4] is suspected, check the connectors and cables for loose
connections.
If the battery voltage is low, keep the power supplied for at
least 48 hours to charge the battery.
Execute an absolute reset. (Note)
EF Absolute encoder error
(3)
Cause: The actuator was moved by hand and the motor speed
exceeded 150 rpm while the power supply was cut off.
Action: Be careful not to move the actuator while the power is cut off.
Execute an absolute reset. (Note)
F7 EEPROM write error A current-position write signal (PWRT) was input in the teaching mode
when the controller was unable to receive the signal.
Cause: [1] The signal was input when home return was not yet
completed.
[2] The signal was input during jogging.
Action: [1] Input the signal after confirming that home return has
completed (HEND is ON).
[2] Input the signal after confirming that the JOG button is not
pressed or the actuator is stopped (MOVE is OFF).
(Note) How to execute an absolute reset when an ED, EE or EF error is present
[1] Reset the alarm (clear the error message) to turn the *ALM signal ON again.
[2] Perform home return.
These steps can be performed using the teaching pendant or PC or by issuing applicable commands
from the PLC. You can use any of these three methods, but be sure to perform the above steps.
Refer to 7.1, “How to Start.”