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PROTECTIVE FUNCTION (FAULT DISPLAY)
If a transistor converter detects a fault, the fault is displayed on the
digital operator and fault contact output operated to stop the
transistor converter .
(When a minor fault occurs, an alarm is output
and operation is continued .)
Provide proper corrective action after troubleshooting .
Table 15 Protective Function
(Fault Display)
* CIMR-DCA4300 is provided with three drive units : Four fuses per unit
When the LED (FU) on the drive unit is lit . i t means one or more drive unit fuses are blown .
Remove the top cover, and you can find LED (FU) on the drive unit .
Fault Display
Contents
Description
Remarks
Puu
Undervoltage ( PUV )
Output
"
voltage becomes under-
I
VOL; I-
s
210 VDC power
supply fault
voltage during operation .
" Momentary overload
Fit
LUU
Undervoltage (CUV )
Control power supply becomes
; "
Undervoltage during operation . '
power supply in unit fault
Undervoltage
Main circuit contactor (MC)
(MC-ANS fault)
"
does not operate correctly .
Unit fault, etc.
Reju
Undervoltage (AUV)
"
Input voltage becomes under-
VAN s 150 VAC
" Power supply fault (open
voltage during operation .
phase)
' " Output shortcircuit,
RF
of
Fuse blown (ACFU)
Input side fuse is blown .
grounding
" Power element fault
dFu
Fuse blown (DCFU)
Output side fuse is blown .
" Output shortcircuit, grounding
PFu
Fuse blown (Drive Unit) I
"
Drive unit fuse in model
Output shortcircuit,
grounding
CB4R-DCA4300 is blown .*
' " power element fault
OL
Input overcurrent
Excessive input current and
" Output shortcircuit
output side grounding
" Power supply drop
ou
Output overvoltage
Output voltage becomes over-
I
" Vou-r k 400 V
voltage .
" Excessive regenerative power
" Fin temperature ? 90°C
Radiation fin overheat
Radiation fin is overheated .
(194° F )
" Excessive ambient
temperature
FdEu
Power supply frequency
Power supply frequency
" Power supply fault
fault
exceeds allowable value .
r .
~~uu
~~
Transmission-fault
Check sum and check pattern
" Hardware fault
L
converter-operator
fault
r PF0 ~ ~
Transmission fault
Check sum and watchdog
" Hardware fault
L
converter-operator
timer fault
'
L .
Pfl
n
jii?
Baseblock fault
Baseblock circuit malfunction " Hardware 'fault
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