44
ATR 421 - User manual
57
a.2.Ld.
Alarm 2 Led
: Defi nes led A2 status corresponding to relevant
contact.
o.c.
(Open Contact)
c.c.
(Contact closed) >
Default
58
a.2.a.t.
Alarm 2 Action Type
: Defi nes alarm 2 action type on operating
cycle.
no.ac.
(No Action). Changes only output related to the alarm.
>
Default
.
e.cY.s.
(End Cycle Signal). Cycle ends (STOP) with acoustic and visual
signalling. Changes output related to the alarm, buzzer sounds
and on display fl ashes
aL. 2
until pressing OK.
au.si.
(Audible Signal). Only acoustic signalling: buzzer sounds.
59
aL. 3
Alarm
3
: Alarm 3 selection
dis.
(Disabled). >
Default
.
a. aL.
(Absolute Alarm). Referring to the process.
b. aL.
(Band Alarm). Command sepoint ± band.
H.d.aL.
(High Deviation Alarm). Command se deviation.
L.d.aL.
(Low Deviation Alarm). Command setpoint - deviation.
a.c.s.a.
(Absolute Command Setpoint Alarm). Reff erring to the sepoint.
st.aL.
(Start Alarm). Active in RUN.
end.a.
(End Alarm). Active at cycle end.
a.o.r.s.
Auxiliary Output Related to the Step). ON/OFF at each step.
a.o.r.m.
(Auxiliary Output Rising Maintenance). Auxiliary output active
for rising and holding steps
a.o.fa.
(Auxiliary Output Falling). Auxiliary output active for falling
steps.
burn
(Burners). Burner output for gas functioning.
Fans
(Fans). Fans output for gas functioning.
cooL
(Cooling). Actuator output for cooling during double loop
functioning.
60
a.3.s.o.
Alarm 3 State Output
: Selects contact type for alarm 3 output.
n.o.
(Normally Open). >
Default
.
n.c.
(Normally Closed).
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