Hitachi SJ Series, User Manual

Page: 627 / 786

18-34
Chapter 18
Tips/FAQ/Troubleshooting

Icon 2 ALT monitor
• The ALT icon is shown on the display.

Icon 2 RETRY monitor
• The RETRY icon is shown on the display.
• When ALT is shown, the inverter is in the following
condition(s).
• You can see the status of ALT by pressing UP key
on the three-lined monitor or on [dC-38].
• When RETRY is shown, the inverter is in the
following condition(s).
• You can see the status of RETRY by pressing UP
key on the three-lined monitor or on [dC-39].
Q
Q
A
A
Occurrence

Estimated cause(s)

Exemplar measures to be taken
Occurrence

Estimated cause(s)

Exemplar measures to be taken
Output current was
high, and [dC-38]
ALT was set to 01.
• The current increased due to load or other factors,
exceeding the overload prewarning levels set in
[CE106] or the similar parameter.
• Remove the factor for the increased load.
(E.g., by cleaning a clogged channel)
• Enable [bA122] overload limit function or
similar function.
Output current was
high, and [dC-38]
ALT was set to 03.
• The electronic thermal function of inverter was
activated due to increase in current and the load
exceeded the electronic thermal warning level
(CTL) set in [CE-31].
• Remove the factor for the increased load.
(E.g., by cleaning a clogged channel)
Output was turned
OFF and [dC-39]
RETRY was set to
01.
• The inverter is in the waiting mode after a trip retry
operation due to increased current or P-N voltage
fluctuation.
• If the wait time become longer, the
following delay time become shorter.
[bb-26] [bb-29] [bb-31]
• If this error is generated consecutively,
make the wait time longer. [bb-26] [bb-29]
[bb-31]
Output was turned
OFF and [dC-39]
RETRY was set to
02.
• The inverter is in the waiting mode before restart
after power-off by [RS], [FRS], or [CS] terminal.
• If the wait time become longer, the
following delay time become shorter.
[bb-26]
Output current was
high, and [dC-38]
ALT was set to 02.
• The electronic thermal function of motor was
activated due to increase in current and the load
exceeded the electronic thermal warning level
(MTR) set in [CE-30].
• Remove the factor for the increased load.
(E.g., by cleaning a clogged channel)
• Re-examine the electric thermal settings in
[bC110] or the similar parameter.