User manual - DRR244 - 15
•
A.i. 0
: Zero tare function: brings the analogue input to 0.
•
M.reS.
: Allows the reset of the output if manual reset is active for the alarms and for the command
outputs;
•
t.1.r u n
: If timer 1 is enabled (par. 328 t m r.1 different from di s a b .), with digital input active, the timer
is 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.r u n
: 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;
•
u p. k e y
: simulate button
operation;
•
d o w n.k.
: simulate button
operation;
•
fnc. k.
: simulate button FNC operation;
•
s et. k.
: simulate button SET operation;
•
EXT.A L.
: External Alarm. The controller goes to STOP and the alarms are disabled. To return to START
condition, one of following events is required:
- switching off and on the controller
- activation of the digital input if the relative parameter is
st./S t.
- by pressure SET button if par. 286 s.k.s.f. set on
st./S t.
- START by serial commad on word modbus 1214).
7.7 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 . 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.
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