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9-4
Chapter 9. MAINTENANCE & TROUBLESHOOTING
■
Alarm categories
PV range alarm groups:
AL01
to
AL16
Controller alarm groups:
AL70
to
AL99
, and low battery voltage
(
BAT
LED on console blinks in case of low battery
voltage.)
*1
AL96 goes out even if program setup data other than the damaged
data is reset.
*2
AL97 goes out even if parameter setup data other than the damaged
data is reset.
Alarm Code
Alarm Name
AL01
Input 1 over-range
AL02
Input 1 under-range
AL03
Input 2 over-range
AL04
Input 2 under-range
AL07
Input 1 RTD
disconnection A
AL08
Input 1 RTD
disconnection B
AL09
Input 1 RTD
disconnection C
AL10
MFB disconnection
AL11
MFB short-circuit
AL12
MFB adjustment
impossible
AL13
Input 2 RTD
disconnection A
AL14
Input 2 RTD
disconnection B
AL15
Input 2 RTD
disconnection C
AL16
Temperature opera-
tion error
AL70
A/D1 malfunction
AL71
A/D2 malfunction
AL81
Board configuration
error
AL83
Cold junction com-
pensation impossible
AL96
Program error
AL97
Parameter error
AL98
Adjustment value
error
AL99
PROM error
Description
Input 1 has exceeded 110% FS
Input 1 has fallen below -10% FS
Input 2 has exceeded 110% FS
Input 2 has fallen below -10% FS
RTD line A is disconnected.
RTD line B or lines ABC are dis-
connected.
RTD line C is disconnected.
MFB (Y, T, G) line(s) is disconnect-
ed.
Y-G line or Y-T-G line is short-cir-
cuited.
Faulty wiring, motor incompatibility
etc.
RTD line A is disconnected.
RTD line B or lines ABC are dis-
connected.
RTD line C is disconnected.
The dry-bulb/wet-bulb temperature
is out of range 0 to 100°C.
A/D converter 1 has malfunctioned.
A/D converter 2 has malfunctioned.
Faulty board configuration
Cold junction compensation of
input 2 thermocouple cannot be
carried out.
Damaged program setup data
Damaged parameter setup data
Damaged analog input/output
adjustment data
Damaged system program
Remedy
Check input 1
Check input 2
Check line of RTD (resistance tem-
perature detector) connected to
input 1 for disconnection, and ter-
minal connections.
Check MFB wiring.
Check wiring of MFB switching
relay or motor specifications.
Check line of RTD (resistance tem-
perature detector) connected to
input 2 for disconnection, and ter-
minal connections.
Check input 1 and input 2
Ask for repair.
Ask for repair.
Either set input 1 to the thermocou-
ple range, or set so that cold junc-
tion compensation is carried out
outside the DCP32.
Check program setup, and reset
damaged data. *1
Check parameter setup, and reset
damaged data. *2
Ask for repair.
Ask for repair.