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ap. 6
TROUBL
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TING
[ 17 ]
pg
PG wire break
Problem The pulse generator (PG) wire has been broken somewhere in the circuit.
Possible Causes
What to Check and Suggested Measures
(1) The wire between the pulse
generator (PG) and the option
card has been broken.
Check whether the pulse generator (PG) is correctly connected to the option card or any
wire is broken.
Î
Check whether the PG is connected correctly. Or, tighten up the related terminal
screws.
Î
Check whether any joint or connecting part bites the wire sheath.
Î
Replace the wire.
(2) PG related circuit affected by
strong electrical noise.
Check if appropriate noise control measures have been implemented (e.g., correct
grounding and routing of signal wires, communication cables, and main circuit wires).
Î
Implement noise control measures.
Î
Separate the signal wires from the main power wires as far as possible.
[ 18 ]
er1
Memory error
Problem Error occurred in writing the data to the memory in the inverter.
Possible Causes
What to Check and Suggested Measures
(1) When writing data (especially
initializing or copying data),
the inverter was shut down so
that the voltage to the control
PCB has dropped.
Initialize the function code data with H03 (= 1). After initialization, check if pressing the
key releases the alarm.
Î
Revert the initialized function code data to their previous settings, then restart the
operation.
(2) Inverter affected by strong
electrical noise when writing
data (especially initializing or
copying data).
Check if appropriate noise control measures have been implemented (e.g., correct
grounding and routing of control and main circuit wires). Also, perform the same check
as described in (1) above.
Î
Implement noise control measures. Revert the initialized function code data to their
previous settings, then restart the operation.
(3) The control PCB failed.
Initialize the function code data by setting H03 to "1," then reset the alarm by pressing
the
key and check that the alarm goes on.
Î
The control PCB (on which the CPU is mounted) is defective. Contact your Fuji
Electric representative.
[ 19 ]
er2
Keypad communications error
Problem A communications error occurred between the remote keypad or the multi-function keypad and the inverter.
Possible Causes
What to Check and Suggested Measures
(1) Broken communications cable
or poor contact.
Check continuity of the cable, contacts and connections.
Î
Re-insert the connector firmly.
Î
Replace the cable.
(2) Connecting many control wires
hinders the front cover from
being mounted, lifting the
keypad.
Check the mounting condition of the front cover.
Î
Use wires of the recommended size AWG 19 or 18 (0.65 to 0.82 mm
2
) for wiring.
Î
Change the wiring layout inside the unit so that the front cover can be mounted
firmly.
(3) Inverter affected by strong
electrical noise.
Check if appropriate noise control measures have been implemented (e.g., correct
grounding and routing of communication cables and main circuit wires).
Î
Implement noise control measures.
For details, refer to the FRENIC-MEGA User's Manual, "Appendix A."
(4) A keypad failure occurred.
Replace the keypad with another one and check whether a keypad communications error
(
er2
) occurs.
Î
Replace the keypad.
Содержание FRENIC-MEGA
Страница 36: ...2 6 Unit inch mm Refer to Section 2 3 3 9...
Страница 208: ...5 89 Examples of Sequence Circuits 1 Standard sequence 2 Sequence with an emergency switching function...
Страница 356: ...MEMO...
Страница 358: ...Fuji Electric Co Ltd Fuji Electric Corp of America http www fujielectric com fecoa 2011 04 D11 D10...