Latch On Function; Soft-Start Function; Pre-Programmed Cycle - Pixsys ATR244-12ABC Manual De Instalación

8.10

LATCH ON Function

For use with input
pot.
value of the scale (par. 4
scale end (par. 5
u.L. i . 1
confi gured as Ltc.2
It is also possible to fi x the point in which the controller will display 0 (however keeping the scale range
between /
L.L. i . 1 L.L. i .2
par. 10 or 27
Ltc. 1 Ltc.2.
the virtual zero will remain fi xed once calibrated. To use the LATCH ON function, confi gure the
u.0.sto.
par. or 27
1
Ltc. 1 Ltc.2.
Then refer to the following table for the calibration procedure:
Press Display
Exit parameters confi guration. Display 2
1 FNC
visualizes writing
Store value on minimum.

2
Display shows
Store value on max.

3
Display shows
Set virtual zero. Display shows
4 FNC If "Virtual zero at start"is selected, point 4
must be repeated at each starting.
8.11

Soft-Start Function

ATR244 is provided with two types of softstart selectable on parameter 264
1 First selection (
GrAd.
on the rising gradient set on parameter 266
parameter 269
SS.ti.
269 is elapsed, the controller stops to follow the gradient and reaches setpoint with the maximum
power.
2 Second selection (
set the threshold under which starts the softstart ("Softstart Threshold"). On par. 267
Percentage") an output percentage is selectable (from 0 to 100), which controller keeps until the
process exceeds the threshold set on par. 268 or until the time in minutes set on par. 269
("Softstart Time" word 2084).
If the Sof-Start function is active the automatic/manual Tuning function cannot be activated.
8.12

Pre-Programmed cycle

Pre-programmed cycle function activates by setting
Controller reaches setpoint 1 basing on the gradient set on parameter 266
power up to setpoint 2. When the process reaches max. power, this setpoint is maintained for the time
set on parameter 270
At expiry, process will reach ambient temperature according to gradient entered on parameter 271
, then command output will be disabled and display will visualize
fa.Gr.
1 The tuning procedure starts by exiting the confi guration after changing the parameter.
22 - ATR244 - User manual
and with linear input (0..10 V, 0..40 mV, 0/4..20 mA) it is possible to associate start
or par. 21
L.L. i . 1
or par. 22 ) to the maximum position of the sensor (par. 10
u.L. i .2
). stndr
and / ) using the "virtual zero" option by selectin
u.L. i . 1 u.L. i .2
Selecting
u.0.t.on.
Latc.
Low.
HiGh.
) enables gradient softstart. AAt starting the controller reaches setpoint basing
("Softstart Time") is diff erent to 0, at starting when the time selected on par.
) abilita enables output percentage softstart. On par. 268
PErc.
.
ma.t. i .
) to the minimum position of the sensor and value of the
L.L. i .2
the virtual zero must be reset at each switching on; selecting
Do
Place the sensor on minimum operating
value (corresponding to
Place sensor on maximum operating value
(corresponding to
To exit standard proceeding press SET.
For "virtual zero" setting, place the sensor to
zero point.
zero.
To exit procedure press SET.
("Softstart Gradient") in Unit/hour (ex. °C/h). If
SS.Gr.
on parameter 263
Enab.
Ltc. 1
or
u.0.sto.
/
L.L. i . 1 L.L. i .2
/ ).
u.L. i . 1 u.L. i .2
("Softstart Type").
SS.tY.
it is possible to
SS.tH.
SS.PE.
.
pr.cY.
, then it reaches max.
SS.Gr.
.
Stop
or par. 27
on
u.0.t.on.
)
("Softstart
SS.ti.