K-Patents SeedMaster 2 - Manual (Page 62)

8 SET UP SeedMaster 2 62
62
SET UP -> INPUTS -> SYRUP PARAM. 1 /
TYPICAL BEET
TYPICAL BEET m: 0 . 1 7 8
b: 0 . 8 2
c: - 2 . 1
CHANGE BACK ACCEPT
SYRUP PARAM.
Fig. 8. 10
Selecting the quality parameters (see Ch.12.1):
There are 2 fixed (“built in”) sets of quality parameters called “TYPICAL BEET” and “TYPICAL CANE”.
The parameter data:
TYPICAL BEET
m: 0.178 TYPICAL CANE m: - 0. 06265
b : 0.82 b : 0.982
c : - 2.1 c : - 2.1
The listed data on beet are regarded as typical (source: McGINNIS: Beet Sugar Technology, 3
rd
Edition),
while those on cane are based on Thieme’s data (L. Rózsa: Sucrose solubility in impure cane sugar
solutions, International Sugar Journal, May 2000).
Besides the 2 fixed sets of parameters it is possible to select LABORATORY as well:
m:
b :
c :
In this case quality parameters determined by the local laboratory can be entered.
NOTES:
1. It is advised to use local syrup quality parameters whenever possible.
2. The description of a procedure to determine these parameters can be found in the “APPENDIX”.
3. Setting m = c =0 (with any value of b) will result in a constant saturation function value Fsat = 1,0. This is
the case of a pure sucrose solution, that is non-sugar content and its effect on solubility will be
neglected.
CONCENTRATION CORRECTION:
It might be needed with low purity (purity < 80 %) syrups /mother liquor based on laboratory data.
K = 1 when typical correction is used.
8.3 Set up DIGITAL I / O
DIGITAL INPUTS (see Chapters 3.6.1, 3.6.2)
There are 8 digital input (DIN) channels. These can be anyone of the 3 possible input types (see: Ch. 4.1,
Figure 4.5).
There are 3 digital inputs per crystallizer which can be used: STRIKE ACTIVE, SEEDED and CHANGE
SYRUP inputs.
During a digital input set up operation the terminology familiar with the use of relays is used. An input is
regarded ACTIVE, when a contact type input is CLOSED, or OPEN (configurable).
For the 3 selectable input types OPEN and CLOSED has the following meaning:
Input : Contact Transistor collector DC voltage
OPEN : Open contact
Transistor is non-conducting 0 VDC
CLOSED: Closed contact Transistor is conducting 24 VDC