Ascon Tecnologic - KX5P Line - ENGINEERING MANUAL - PAG. 17
be forced to be equal to the active set point;
• When [82] SP.rt = trin - the remote set point
will be forced to zero;
• When [82] SP.rt = PErc - the remote set
point will be forced to zero.
2.
SP2, SP3 and SP4 selection will be shown
only when the relative set point is enabled (see
[74] nSP parameter).
[82] 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 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 simultane-
ously the set point of 20 instruments by changing the set
point of the master unit (e.g. hot runner application).
SP.rt parameter defines how the slaves units will use the
value coming from serial link.
Parameter [100] tr.SP [selection of the value to be retrans-
mitted (Master)] parameter allows to define the value sent by
master unit.
Available:
When at least one output is e programmed as
control output and the 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 [82] SPrt change produces the following actions:
• When [82] SP.rt = rSP - the remote set point will
be forced to be equal to the active set point;
• When [82] SP.rt = trin - the remote set point
will be forced to zero;
• When [82] 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.
[83] SPLr - Local/remote set point selection
Available:
When at list one output is programmed as control
output.
Range:
Loc
Local set point selected by [81] A.SP;
rEn
Remote set point (coming from serial link).
[84] SP.u - Rate of rise for positive set point
change
(ramp up)
Available:
When at list one output is e programmed as
control output.
Range:
0.01... 99.99 units per minute;
inF
ramp disabled (step transfer).
[85] SP.d - Rate of rise for negative set point
change
(ramp down)
Available:
When at list one output is e 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 the following:
from [75] SPLL+ RSP to [76] SPHL - RSP.
]
PAn group - Operator HMI
[86] PAS2 - Level 2 password: Limited access level
Available:
Always.
Range:
oFF = Level 2 not protected by password
(as level 1 = Operator level);
1... 200.
[87] PAS3 - Level 3 password:
Complete configuration level
Available:
Always.
Range:
3... 200.
Note:
Setting [86] PAS2 equal to [87] PAS3, the level 2 will
be masked.
[88] uSrb -
button function during RUN TIME
Available:
Always.
Range:
nonE
No function;
tunE Auto-tune enabling: A single press (longer
than 1) starts the auto-tune;
oPLo Manual mode: The 1
st
pressure puts the
instrument in manual mode (
oPLo
) while the
2
nd
one puts the instrument in Auto mode;
AAc
Alarm reset;
ASi
Alarm acknowledge;
chSP Sequential set point selection;
St.by Stand by mode: The 1
st
press puts the in-
strument in stand by mode while the 2
nd
one
puts the instrument in Auto mode;
P.run Program run (see note 1);
P.rES Program reset (see note 2);
P.r.H.r Program run/hold/reset (see note3).
Notes: 1.
When “Program run” is selected, the first press
starts the program execution but a second press
restarts the program execution from the beginning.
2.
When “Program reset” is selected, a short press
resets the program execution.
3.
When “Program run/hold/reset” is selected,
a short press starts/stop (Hold) the program
execution while a long press (longer than 10
seconds) resets the program.