16 - ATR244 - User manual
switched to RUN, otherwise is kept in STOP;
•
t .1 . s . e . : If timer 1 is enabled (par. 328 t m r.1 different from di s a b .), acting on the digital input, the status
of the timer switches from STOP to RUN e vice versa;•
t .1 . s t a . : If il timer 1 is enabled (par. 328 t m r.1
differnet from
di s a b .), acting on the digital input, the timer is switched to RUN;
•
t .1 . e n d . : If il timer 1 is enabled (par. 328 t m r.1 differnet from di s a b .), acting on the digital input, the
timer is switched to STOP;
•
t.2.run: If timer 2 is enabled (par. 331 t m r. 2 different from di s a b .), with digital input active, the timer
is switched to RUN, otherwise is kept in STOP;
•
t. 2. s . e.: If timer 2 is enabled (par. 331 t m r. 2 different from di s a b .), acting on the digital input, the
status of the timer switches from STOP to RUN e vice versa;
•
t. 2. s t a .: If timer 2 is enabled (par. 331 t m r. 2 different from di s a b .), acting on the digital input, the
timer is switched to RUN;
•
t. 2. e n d .: If timer 2 is enabled (par. 331 t m r. 2 different from di s a b .), acting on the digital input, the
timer is switched to STOP;
•
Lo . cfG.: With digital input active, the access to setpoint configuration/modification is locked;
•
reM.s . e.: If on par. 56 rem.s . it is selected enab. or en.ser.), with digital input active the remote setpoint
is enabled, otherwise the setpoint is local. On par. 234
d . i .1 . r. or 242 d .i . 2. r. or 250 d .i .3. r. or 258 d .i .4. r.
it is necessary to select the reference regulation loop.
8.7 Automatic / Manual regulation for % output control
This function allows to switch from automatic functioning to manual command of the output
percentage.
With par. 48
A . m a .1 . (for regulation loop 1) or par. 67 A. m a .2. (for regulation loop 2) it is possible to select
two modes.
1 First selection (
enab.) allows to eneble with FNC the writing p.--- on display 1, while on display 2 is
showed
autom.
Press SET to visualize manu.; it’s now possible, during the process visualization, modify through the
keys
c
and
d
the output percentage. To back to automatic, with the same procedure, select autom.
on display 2: immediately led MAN switches off and functioning backs to automatic.
2 Second selection (
en.sto.) enables the same functioning but with two important variants:
• If there is a temporary power failure or after switch-off, the manual functioning as well as the
previous output percentage value will be maintained at restarting.
• If the sensor breaks during automatic functioning, the controller switches to manual mode while
maintaining the output percentage command unchanged as generated by the PID immediately
before breakage.
Ex: on an extruder the command in percentage of the resistance (load) is maintained also in case of
input sensor failure.
8.8 Heater Break Alarm on CT (current transformer - only
on ATR244-23xx-T)
This function allows to measure load current to manage an alarm during a malfunctioning with power
in short circuit, always open or partial break of the charge. To enable this function set
50 Hz or 60 Hz on
par. 287
ct F. and the value of the connected transfomer, on par. 288 ct v ..
• Seletct on par. 289
H.b.a.r. the regulation loop referred to the current measure and the Heater Break
Alarm intervention.
• Select on par. 290
H.b.a.t. the Heater Break Alarm intervention threshold in Ampere.
• Select on par. 291
ocu.t. the intervention threshold in Ampere to control the overcurrent.
• Select on par. 292
H.b.a.d. the delay time in seconds for the Heater Break Alarm intervention.
• It is possible to associate an alarm, selecting
H.b.a. on par. 123 a L .1 . F. on par. 141 a L.2.F. or par. 159 a L.3 . F.
or par. 177
a L.4 . F. or par. 195 a L. 5 . F. or par. 213 aL.6.F.
It is possible to visualize on display 2 the average current, selecting AMPEr. on par. 278 vi . d .2.
Selecting 0 on par. 290
H. b .A. t. it is possible to visualize the current consumption without generating
an Heater Break Alarm.
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