Example For Programming - Sartorius Stedim Biotech CERTOMAT BS-T Mode D'emploi

3.3.4.2 Example for programming

•
Altogether five different programs can be memorized in
the device. Each program consists of one "PRSTEP" and
four further steps which can be processed one after the
other. For each step the values for cooling, light, speed
and temperature can be set independently from one
another. Each step has a defined duration time.
•
If only one or two steps are required the remaining steps
can be defined with a duration time 00:00 so that the
program is directly stopped afterwards. A repeat
function for endless loops is available.
•
The "PRSTEP" can only be switched on or off (no
operating time). It defines the conditions (cooling, light,
speed and temperature) from the pressing of the key
[START] until the program start (STEP1).
Example:
On Monday morning at 9:00 o´clock any cultures have to be ready. The program (STEP1...STEP4) for the production of these
cultures needs altogether 38 h. So the program must be started manually without use of the "PRSTEP" on Saturday evening at
7:00 o´clock.
The "PRSTEP" makes it possible to choose any time for the start and to keep the material cooled under the desired conditions.
PROG1: PRSTEP: ON at 20 °C, speed 0, light off, cooling on
Step 1: 7 h at 30 °C, speed 200, light on, cooling off
Step 2: 10 h at 40 °C, speed 100, light off, cooling off
Step 3: 20 h at 10 °C, speed 60, light on, cooling on
Step 4: 1 h at 10 °C, speed 200, light on, cooling on
Function
Cooling
Light
Speed
[rpm]
Temperature
[°C]
TIME (operating time)
Day
Time
START
PRSTEP
Fig. 23: Example for programming
20
PRSTEP STEP1 STEP2
on off off
off on off
200
100
0
40
30
20
ON 7 h 10 h
Saturday Sunday
19:00 02:00
Program
START
•
At "PRSTEP" switched off, the cooling, light, speed and
temperature are switched off until the program start.
•
The main purpose of use for the "PRSTEP" is the
date/time exactness for the provision of cultures, e. g.
after the weekend or the next morning.
Advantages:
•
You have to define the program only once with
operating times and you can start it afterwards at any
time. The time of the program end remains always the
same.
•
Comfortable start of night or weekend programs during
the day or before the weekend.
•
Conditions are reproducible before the start of the
program because these are held by the device according
to the settings in the "PRSTEP ".
•
Automatic program start without the personnel being
present.
STEP3 STEP4
on on
on on
200
60
10 10
20 h 1h
Sunday Monday Monday
12:00 08:00 09:00
Program
end