Toshiba VF-nC1 - Manual (Page 129)

E6581090
M-1
13
13. Before making a service call – Trip information and remedies
13.1 Trip causes/warnings and remedies
When a problem arises, diagnose it in accordance with the following table. If it is found that
replacement of parts is required or the problem cannot be solved by any remedy described in the
table, contact your Toshiba dealer.
[Trip information: FL relay activated]
Error
code Alarm
code
Problem Possible causes Remedies
QE
QER
0001
0025
Overcurrent during
acceleration
Overcurrent flowing
in element during
acceleration • The acceleration time CEE is
too short.
• The V/F setting is improper.
• A restart signal is input to the
rotating motor after a
momentary stop, etc.
• A special motor (e.g. motor with
a small impedance) is used.
• Increase the acceleration time
CEE .
• Check the V/F parameter.
• Use H (auto-restart) and
H (ride-through control).
• Increase or decrease the carrier
frequency H.
QE
QER
0002
0026
Overcurrent during
deceleration
Overcurrent flowing
in element during
acceleration • The deceleration time FGE is
too short.
• Increase the deceleration time
FGE .
QE
QER
0003
0027
Overcurrent during
operation
Overcurrent flowing
in element during
acceleration • The load fluctuates abruptly.
• The load is in an abnormal
condition.
• Reduce the load fluctuation.
• Check the load (operated
machine).
QEC 0005 Arm overcurrent at
start-up • A main circuit element is
defective.
• Make a service call.
QEN 0004 Overcurrent (An
overcurrent on the
load side at start-up) • The insulation of the output
main circuit or motor is
defective.
• The motor has too small
impedance.
• Check the cables and wires for
defective insulation.
QR 000A Overvoltage during
acceleration • The input voltage fluctuates
abnormally.
① The power supply has a
capacity of 200kVA or more.
② A power factor improvement
capacitor is opened or closed.
③ A system using a thyrister is
connected to the same power
distribution line.
• A restart signal is input to the
rotating motor after a
momentary stop, etc.
• Insert a suitable input reactor.
• Use H (auto-restart) and
H (ride-through control).
(Continued overleaf)