Pixsys DRR 245, Руководство пользователя

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18 - DRR245 - User manual
8.6 Automatic / Manual Regulation for % Output
Control
This function allows to select automatic functioning or manual command of the
output percentage.
With parameter 60
Au.ma.
, can select two methods.
1 First selection (
en.
)
Pressing
|
key display 1 shows
p.---
, while display 2 shows
Auto
.
Pressing
c
key display shows
Man.
; it is now possible to change the output
percentage using
c
and
d
. To return to automatic mode, using the same
procedure, select
Auto
on display 2: led MAN switches off and functioning
returns to automatic mode.
2 Second selection
(
EN.ST,
)
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 moves
to manual mode while maintaining the output percentage command
unchanged as generated by the P.I.D. immediately before breakage.
8.7 Pre-Programmed Cycle
The pre-programmed cycle function activates by setting
Pr.cy
or
Pc.SS.
on
parameter 59
oP.Mo
.
First selection (
Pr.cy
) :
the controller reaches setpoint1 basing on the gradient set on parameter 62
Grad.
, then it reaches maximum power up to setpoint 2. When the process
reaches maximum power, this setpoint is maintained for the time set on
parameter 63
ma.ti.
On expiry, the command output is disabled and controller displays
stop
.
Cycle starts at each activation of the controller, or via digital input if it is
enabled for this type of functioning (see parameter 61
dGt.i.
).