General alarm (process)
PROCESS
A1
ON
OFF
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Table of anomaly signs
In case the plant does not work properly, the controller stops the program running
and shows a fault condition, activating the internal buzzer. To stop the buzzer press
any key. Controller will signal a thermocouple failure showing
display.
See table below for description of fault messages.
Mistake in programming
E-0 1
EPROM
Cold link failed or room tempera-
E-02
ture out of limits
E-03
Wrong cycle data
E-04
Parameter error.
E-05
Thermocouple circuit defect
E-06
Second relay is programmed to
E-07
control the safety contactor
COMPARISION VALUE
P-13
HYSTERESIS
TIME
Couse
ADC conversion out of range
PROCESO
The alarm can be:
• working over
• working under
Example: working over
A1
ON
NB: Hysteresis is fixed as 1°C/°F.
OFF
Contact technical service
Program a new cycle
Check and/or reconfigure the para-
meters
Check sensors wiring
Check the operation of the relay and/or
of contactor
UMBRAL DE ALARMA
P-13
HISTÉRESIS
TIEMPO
(flashing) on
E-05
Do
User manual ATR 900/901
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