Hardware error
Problem Abnormality on the control PCB or related hardware.
Possible Causes What to Check and Suggested Measures
(1) The interface PCB is
wrongly mounted.
Remove the interface PCB once and remount it into the card slo
until it clicks into place.
(2) The capacity is not set
properly on the control
PCB.
The inverter capacity needs to be modified again.
Î Contact your Fuji Electric representative.
(3) An abnormality is found
in the interconnection
between the control
PCB, power PCB, and
interface PCB.
Replacement of any boards with an hazard may be required.
Î Contact your Fuji Electric representative.
(4) Connection problem
between the control
PCB and the option
card.
Either the control PCB or the option card needs to be replaced.
Î Contact your Fuji Electric representative.
(5) Terminals [13] and [11]
are short-circuited
with each other.
Check circuits/wires hooking terminals [13] and [11].
Î Remove all the parts causing the short-circuit.
[ 22 ]
Mock alarm
Problem The LED displays the alarm
GTT
.
Possible Causes What to Check and Suggested Measures
(1) Data of the function
code H45 has been
set to "1."
This setting makes the inverter issue a mock alarm. Use this to
check out the sequence related to an alarm occurrence.
Î To escape from this alarm state, press the
key.
[ 23 ]
PID feedback wire break
Problem The PID feedback wire is broken.
Possible Causes What to Check and Suggested Measures
(1) The PID feedback
signal wire is broken.
Check whether the PID feedback signal wires are connected
correctly.
Î Check whether the PID feedback signal wires are connected
correctly. Or, tighten up the related terminal screws.
Î Check whether any contact part bites the wire sheath.
(2) A high intensity noise
was given to
somewhere in PID
feedback related
circuits.
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 Improve the countermeasures against the noise.
Î Separate signal wires from main power wires as far as possible.