Ext.[T]» Option - Burkert 8035 Manuel D'utilisation

4 CONFIGURATION
4.2.5. «EXT. [T]» Option
Delvery of a volume proportional to the duration of the high level on the input 1
(see § 4.3.3.). The proportional relationship is as follows:
X = Volume = (A x t) +B
Coefficients A and B entered by the user.
Pulse specification
T : 100 ms
min
T : 300 s
max
Definition: 5 ms
Delay between 2 pulses: min 100 ms
Practical examples:
- "1" Filling cans of 5, 10 and 50 litres respectively. The following values can be entered:
The activation times for binary data input 1 for the three volumes are as follows:
- "2" Doses of chemical products as a function of required concentration. Volumes of 110,
120, 130, and 150 litres.
The following values can be entered:
The activation times for binary data input 1 for the three volumes are as follows:
X=Volume (l)
t=Duration (s)
Note:
- The activation time for the binary data input must always be lower than the actual filling
time. A margin of safety should be allowed when choosing the coefficients A and B.
- The coefficients A and B should be chosen such that the activation times for the binary
data input should be efficient. In the example "2", one could have choosen A = 100 l/s and
B = 0 l. The resulting activation times would be 1.1, 1.2, 1.3 and 1.5 seconds. In this case
the distributed doses would be less accurate.
BATCH CONTROLLER 8035
A Coefficient of proportionality (/s;...)
B Offset (l;...)
t Duration of input 1 activation (ms, s;...)
X Dosing volume (l;...)
A = 5 l/s
B = 0 l
X=Volume (l) 5 10
t=Duration (s) 1
A = 5 l/s
B = 100 l
110 120
2 4
E-17-
50
2 10
130 150
6 10