User manual

URDR0001 - User manual - 19
If parameter 59 op.mo. is set on co n t. and parameter 63 m a . ti . is dierent from
0, after switch-on and elapsing of the time set on parameter 63, setpoint does not
follow the gradient anymore, but it reaches nal setpoint with maximum power.
Autotuning does not work when Soft-Start is activated: otherwise if parameter
63
m a . ti . is dierent from 0 and parameter 57 tune is set on auto , Autotuning
starts when Soft-Start time is nished.
If parameter 57
tune is set on man. , the Autotuning can be started only when
Soft-Start nishes.
7.6 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
SET
key display 1 shows p.--- , while display 2 shows Auto .
Pressing
key display shows Man. ; it is now possible to change the output
percentage using
and . To return to automatic mode, using the same
procedure, select
Auto on display 2: led MAN switches o 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-o,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.