NEW BRUNSWICK SCIENTIFIC BioFlo CelliGen 115, Руководство по эксплуатации

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BioFlo/CelliGen 115
y
M1369-0050 User’s Guide
6.2.6 Selecting Loop Control Modes
A control mode is the logic by which a controller generates the desired control
signal. The operator has a choice of control modes, the most common of
which are
ON
,
OFF , AUTO and MANUAL . Other available control modes, in
certain cases, are
O2ENRICH
,
2-GAS
,
3-GAS
or
4-GAS
.
In cascaded control, one sensor influences an actuator that is normally
associated with a different sensor. The onscreen control mode choice will be
the name of the loop chosen to have influence on the actuator. (
See Section 10
for details.)
Control modes vary according to the loop and process mode. (There are also
operating modes for all of the pumps;
see Section 11.3
for details.)
To change operating modes for any of the displayed loops:
1.
Press either the LoopName or the Control Mode box in the row for the
appropriate loop, to open the loop’s GAUGE screen.
Figure 21: Sample GAUGE Screen (pH)
6.2.7 Entering Loop Setpoints
The setpoint is the value you want each loop to attain. When the loop control
mode is
AUTO , the fermentor will automatically make appropriate adjustments
to maintain the value at the setpoint.
To enter a setpoint for any loop, follow these steps:
1.
Touch either the LoopName box or the Setpoint box for the desired loop
on the SUMMARY screen. In this example, we have selected AGIT .
2. Press the
button that
corresponds to
the desired
operating mode.
3. To save the new
operating mode and
return to the SUMMARY
screen, press the
SUMMARY button.
Deadband is
a user-
definable
pH value
within
which, +
or – the
setpoint, no
response
will be
triggered.