Fanuc Power Mate i-D/H Operation Maintenance Handbook

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No. RemedyDescriptionMeaning
Alarm
No.
Message
7n11 SPN_n_ :
OVERVOLT
POW
CIRCUIT
AL–11 Overvoltage
in DC link
section
Detects abnor-
mally high di-
rect current
power supply
voltage in pow-
er circuit sec-
tion.
Remove
cause, then
reset alarm.
7n12 SPN_n_ :
OVERCUR-
RENT POW
CIRCUIT
AL–12 Overcurrent in
DC link sec-
tion
Detects flow of
abnormally
large current in
direct current
section of pow-
er cirtcuit
Remove
cause, then
reset alarm.
7n13 SPN_n_ :
DATA
MEMORY
FAULT CPU
AL–13 CPU internal
data memory
abnormality
Detects ab-
normality in
CPU internal
data memory.
This check is
made only
when power is
turned on.
Remove
cause, then
reset alarm.
7n15 SPN_n_ :
SP
SWITCH
CONTROL
ALARM
AL–15 Spindle
switch/output
switch alarm
Detects incor-
rect switch se-
quence in
spindle switch/
output switch
operation.
Check se-
quence.
7n16 SPN_n_ :
RAM
FAULT
AL–16 RAM ab-
normality
Detects ab-
normality in
RAM for exter-
nal data. This
check is made
only when pow-
er is turned on.
Remove
cause, then
reset alarm.
7n18 SPN_n_ :
SUM-
CHECK
ERROR
PGM DATA
AL–18 Program
ROM sum
check error
Detects pro-
gram ROM
data error.This
check is made
only when pow-
er is turned on.
Remove
cause, then
reset alarm.
7n19 SPN_n_ :
EX
OFFSET
CURRENT
U
AL–19 Excessive U
phase current
detection cir-
cuit offset
Detects exces-
sive U phase
current detec-
tion ciucuit off-
set.
This check is
made only
when power is
turned on.
Remove
cause, then
reset alarm.
7n20 SPN_n_ :
EX
OFFSET
CURRENT
V
AL–20 Excessive V
phase current
detection cir-
cuit offset
Detects exces-
sive V phase
current detec-
tion circuit off-
set.
This check is
made only
when power is
turned on.
Remove
cause, then
reset alarm.

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