Super Systems AC20 User Manual

Page 51

If transfer from AUTO to MANUAL is performed during the first
part of SMART algorithm (TUNE) the SMART will be aborted and
when returning to AUTO, it will be necessary to start the SMART
algorithm again.
If transfer from AUTO to MANUAL is performed during the second
part of SMART algorithm (ADAPTIVE), when returning to AUTO,
the instrument will automatically restore the ADAPTIVE algorithm.

At power up the device starts as configured at “St.Fn” [C.G06]
configuration parameter.

NOTES

NOTES:
1) When auto/manual control mode is selected by logic input, at

power up the instrument will start in accordance with the
logic input status.

2) If the logic input status requires the manual mode, the

instrument will verify the “St.Fn” [C.G06] parameter setting and
if “St.Fn” [C.G06] is equal to "Auto", "ñan" or “Cnd.A” the
power output will be set to zero otherwise the power output
will be set equal to the last value (in manual mode) prior to
power shut down.

SPECIAL OUTPUT FEATURES

SPECIAL OUTPUT FEATURES
The control action is deactivated (control outputs forced to zero)
and alarms are forced in non alarm condition when:
a) The set point is set to minimum value,

0.00

when the controlled variable is Carbon Potential;

when the controlled variable is mV;

-100 °F (-75 °C) when the controlled variable is Dew Point.

b) The probe output is lower than 900 mV or greater than

1300 mV and the controlled variable is Carbon Potential or
Dew Point.

c) The probe temperature is lower than 900 °F (482 °C) or

greater than 2100 °F (1149 °C) and the controlled variable is
Carbon Potential or Dew Point.

NOTE:

NOTE: when condition b) or c) occurs (independently from the

primary variable selected);
the Carbon Potential is forced to 0.00 and
the Dew Point is forced to 250 °F (121 °C).