9-4
Chapter 9. MAINTENANCE & TROUBLESHOOTING
■
Alarm categories
PV range alarm groups:
A
L
0
1
to
A
L
1
2
Controller alarm groups:
A
L
8
1
to
A
L
Q
Q
, and low battery voltage
(BAT LED on console blinks in case of
low battery voltage.)
Alarm
Code
Alarm Name
Description
Remedy
A
L
0
1
Input 1 over-range
Input 1 has exceeded 110%FS
Check input 1
A
L
0
2
Input 1 under-range
Input 1 has fallen below -10%FS
A
L
0
7
Input 1 RTD disconnec-
tion A
RTD line A is disconnected.
Check line of RTD (resistance
temperature detector)
connected to input 1 for
disconnection, and terminal
connections.
A
L
0
8
Input 1 RTD disconnec-
tion B
RTD line B or lines ABC are
disconnected.
A
L
0
q
Input 1 RTD disconnec-
tion C
RTD line C is disconnected.
A
L
1
0
MFB disconnection
MFB (Y, T, G) line(s) is discon-
nected.
Check MFB wiring.
A
L
1
1
MFB short-circuit
Y-G line or Y-T-G line is short-
circuited.
A
L
1
2
MFB adjustment impos-
sible
Faulty wiring, motor incompat-
ibility etc.
Check wiring of MFB switch-
ing relay or motor specifica-
tions.
A
L
7
0
A/D trouble
A/D converter has malfunc-
tioned. *3
Ask for repair.
A
L
8
1
Board configuration error Faulty board configuration
Ask for repair.
A
L
q
6
Program error
Damaged program setup data
Check program setup, and
reset damaged data. *1
A
L
q
7
Parameter error
Damaged parameter setup data Check parameter setup, and
reset damaged data. *2
A
L
q
8
Adjustment value error
Damaged analog input/output
adjustment data
Ask for repair.
A
L
q
q
PROM error
Damaged system program
Ask for repair.
*1.
A
L
q
6
goes out even if program setup data other than the dam-
aged data is reset.
*2.
A
L
q
7
goes out even if parameter setup data other than the dam-
aged data is reset.
*3. Input data is not updated. An over range or under range condition
does not necessarily occur.
