K-Patents SeedMaster 2 - Manual (Page 64)

8 SET UP SeedMaster 2 64
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NOTE:
The SEEDED input signal must be ACTIVE all over the strike (from seeding till dropping the charge). See
Ch. 3.6.2.
CHANGE SYRUP input (DIN3 ):
This digital input can be used to inform SeedMaster 2 on the change of feed syrup.
NOTE:
It is advised to use momentary digital input (pushbutton, or pulse input lasting for a few seconds).
DIGITAL OUTPUTS
There are 2 dedicated digital outputs assigned to each crystallizer. They are switching transistor types,
conducting current when ON, and non-conducting when switched OFF (capacity: 0.1 A, 48 V (DC), max.).
The outputs are overvoltage and overload protected (see: Ch.4.1 and Fig. 4.6).
DO1and DO2 are the names of outputs dedicated to a specific task. Available free channels (DO_1…DO_4)
can be assigned to anyone of these outputs.
SEED WARNING (DO1) output:
This output is intended to be used for remote signalling (horn, signal lamp) of the approaching seeding in
order to warn the pan operator to make the seeding material (slurry) ready. It will be operated only when
AUTO SEED (ON SUPERSATURATION, or ON DENSITY) was configured. This output can be used for
other tasks as well. For example: if the seeding vessel is furnished with a small motor-driven stirrer, this
motor can be turned on in order to homogenize the seeding slurry, and turned off automatically when seeding
has been completed.
SEED VALVE (DO2) output:
This output should be used to OPEN and CLOSE the seeding valve. The Ton time can be configured (see:
Ch. 7.5).
This output will be operated in all variants of seeding, that is when
MANUAL SEED,
AUTO SEED ON SUPERSATURATION,
AUTO SEED ON DENSITY,
SEEDING ON DIGITAL INPUT or
SEEDING ON COMMAND using digital communication
was configured. However, it can be left un-connected, if seeding is carried out directly by a PCS or manually
by the pan-man. In these later cases, however, SeedMaster 2 has to be notified on seeding carried out by an
other device (for example by using DIN2).
NOTE:
Selections in column CH can be changed for both signal types, but the ACTIVE status can be changed only
with DIGITAL INPUTS.
8.4 Set up ANALOG OUTPUT
There are 4 standard current outputs (4-20 mA, or 0-20 mA, configurable) available. These can be assigned
to any one of the measured or calculated data.