Pixsys ATR 421, User Manual

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ATR 421 - User manual 41
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b. HY
Burners Hysteresis : Defi nes hysteresis for burners command.
-999…999 [digit
7
] (degrees.tenths for temperature sensors).
> Default : 5.0.
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t.s.o.f.
Threshold Switch Off Fans : Defi nes deviation below the
setpoint over which the fans are switched off during falling steps.
In GFS (GID) function, at this threshold burners are switched on
instead that swiched off . When exceeding command setpoint,
burners will switch off .
0…200 [digit] (degrees.tenths for temperature sensors).
> Default : 10.
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uAL.t.
Valve Time : Time for open/close servo-valve (value declared
by servo-valve manufacturer). Not allowed for feedback valves
(potentiometer).
0…300 seconds. > Default : 60.
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fe.po.
Feedback Potentiometer : Enables reading of feedback
potentiometer for motorized valves on input AI2.
Setting
po.ca.
, when exit confi guration, valve will be
completely open and then closed to allow the controller storing
feedback potentiometer limits.
dis.
(Disabled). > Default .
en.
(Enabled).
po.ca.
(Calibration Potentiometer). Backs to
en.
when procedure ends.
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AL.1
Alarm 1 : Alarm 1 selection.
dis
(Disabled). > Default .
a. aL.
(Absolute Alarm). 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.