Ascon Tecnologic - KX6 - ENGINEERING MANUAL -
PAG. 15
[66] SP 3 - Set Point 3
Available:
When [61] nSP > 3.
Range:
From [62] SPLL to [63] SPHL engineering units.
[67] SP 4 - Set Point 4
Available:
When [61] nSP =4.
Range:
From [62] SPLL to [63] SPHL engineering units.
[68] A.SP - Selection of the active Set point
Available:
When [61] nSP > 2
Range:
From
SP
to [61] nSP.
Notes: 1.
A [68] A.SP change produces the following actions:
•
When [69] SP.rt = SP - the remote set point
is forced to be equal to the active set point;
•
When [69] SP.rt = trin - the remote set point
is forced to zero;
•
When [69] SP.rt = PErc - the remote set
point is forced to zero.
2.
SP2, SP3 and SP4 selection are shown only
when the relative set point is enabled (see
[61] nSP parameter).
[69] SP.rt - Remote set point type
These instruments will communicate with each other, using
RS 485 serial interface without a PC. An instrument can be
set as a Master while the other are (as usual) Slave units. The
Master unit can send his operative set point to the slave units.
In this way, for example, it is possible to change simultaneously
the set point of 20 instruments by changing the set point of the
master unit (e.g. hot runner application).
[69] SP.rt parameter defines how the slaves units will use the
value coming from serial link.
The [86] tr.SP [selection of the value to be retransmitted (Master)]
parameter allows to define the value sent by master unit.
Available:
When serial interface is present.
Range: rSP
The value coming from serial link is used
as remote set point (RSP).
trin
The value coming from serial link will be
algebraically added to the local set point
selected by A.SP and the sum becomes
the operative set point.
PErc
The value coming from serial will be scaled
on the input range and this value will be
used as remote set point.
Note:
A [69] SPrt change produces the following actions:
•
When [69] SP.rt = rSP - the remote set point will be
forced to be equal to the active set point;
•
When [69] SP.rt = trin - the remote set point will be
forced to zero;
•
When [69] SP.rt = PErc - the remote set point will be
forced to zero.
Example:
A 6 zone reflow-oven for PCB. The master unit
sends its set point value to 5 other zones (slave controllers).
The Slave zones use it as a set point trim.
The first zone is the master zone and it uses a set point
equal to 210°C.
The second zone has a local set point equal to -45°C.
The third zone has a local set point equal to -45 (°C).
The fourth zone has a local set point equal to -30.
The fifth zone has a local set point equal to +40.
The sixth zone has a local set point equal to +50.
In this way, the thermal profile will be the following:
–
Master SP = 210°C;
–
Second zone SP = 210 -45 = 165°C;
–
Third zone SP = 210 -45 = 165°C;
–
Fourth zone SP = 210 - 30 = 180°C;
–
Fifth zone SP = 210 + 40 = 250°C;
–
Sixth zone SP = 210 + 50 = 260°C.
Changing the SP of the master unit, all the other slave units
will immediately change their operative set point.
[70] SPLr - Local/remote set point selection
Available:
When at least one output is programmed as
control output.
Range: Loc
Local set point selected by [68] A.SP;
rEn
Remote set point (coming from serial link).
[71] SP.u - Rate of rise for positive set point
change
(ramp up)
Available:
When at least one output is programmed as
control output.
Range:
0.01... 99.99 units per minute;
inF
Ramp disabled (step transfer).
[72] SP.d - Rate of rise for negative set point
change
(ramp down)
Available:
When at least one output is programmed as
control output.
Range:
0.01... 99.99 units per minute;
inF
Ramp disabled (step transfer).
General note about remote set point:
When the remote set point (RSP) with trim action is
programmed, the local set point range becomes:
from [62] SPLL + RSP to [63] SPHL - RSP.
]
PAn group - Operator HMI
[73] PAS2 - Level 2 password: Limited access level
Available:
Always.
Range: oFF
Level 2 not protected by password
(as level 1 = Operator level);
1... 200.
[74] PAS3 - Level 3 password:
Complete configuration level
Available:
Always.
Range:
3... 200.
Note:
Setting [73] PAS2 equal to [74] PAS3, the level 2 will
be masked.
[75] uSrb -
button function during RUN TIME
Available:
Always.
Range: nonE
No function;
tunE
Auto-tune/self-tune enabling. A single
press (longer than 1 s) starts the auto-tune;
oPLo
Manual mode. The first pressure puts the
instrument in manual mode (
oPLo
) while the
second one puts the instrument in Auto mode;
AAc
Alarm acknowledge;
ASi
Alarm reset;
St.by
Stand by mode. The first press puts the in-
strument in stand by mode while a second
one puts the instrument in Auto mode;
SP1.2
SP/SP2 selection.
Notes: 1.
When “SP1.2” is used, every press of the
key
(longer than 1 second) revert the set point selected.
When a new set point is selected using the
key,
the display will show for 2 seconds the acronym of
