Keypad Communications Error; Cpu Error - Fuji Electric FRN0001C2S-2A FRN0002C2S-2A FRN0004C2S-2A FRN0006C2S-2A FRN0010C2S-2A FRN0012C2S-2A FRN0020C2S-2A FRN0025C2S-2A FRN0033C2S-2A FR Instruction Manual

Possible Causes
(3) Any error in control
circuit.
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Keypad communications error

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Problem A communications error occurred between the remote keypad (option) and the
inverter.
Possible Causes
(1) Broken communications
cable or poor contact.
(2) Inverter affected by
strong electrical noise.
(3) The remote keypad
(option) defective.
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CPU error

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Problem A CPU error (e.g. erratic CPU operation) occurred.
Possible Causes
(1) Inverter affected by
strong electrical noise.
What to Check and Suggested Measures
Initialize the function code data by setting H03 to "1," then reset the
alarm by pressing the
 The control PCB (on which the CPU is mounted) is defective.
Contact your Fuji Electric representative.
What to Check and Suggested Measures
Check continuity of the cable, contacts and connections.
 Re-insert the connector firmly.
 Replace the cable.
Check if appropriate noise control measures have been
implemented (e.g., correct grounding and routing of control and
main circuit wires).
 Implement noise control measures. For details, refer to the
FRENIC-Mini User's Manual, "Appendix A."
Replace the keypad with another one and check whether a keypad
communications error (
 Replace the keypad.
What to Check and Suggested Measures
Check if appropriate noise control measures have been
implemented (e.g. correct grounding and routing of control and
main circuit wires and communications cable).
 Implement noise control measures.
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key and check that the alarm goes on.
) no longer occurs.
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