Ascon Tecnologic - K Series - ENGINEERING MANUAL - Vr. 9.0
PAG. 25
Application example 2: Edge banding machine with
glue tank (for wood).
At working temperature the hot melt rapidly oxidizes and
runs down from the “dispenser”.
For this reason, when the machine does not work for a
certain time, it is suitable to move the temperature of the
dispenser to a lower value (idle tempeature value).
In this cases the configuration is the following:
Out 1 = h.reg (heating output);
Out 2 = AL (alarm used to enable the dragger);
diF.1 = P.run (dig. input 1 used for program Run/Restart);
Pr.F = S.uP.S (start at Power ON);
Pr.E = cnt (Instrument behaviour at the end of the
program execution = continue).
Connect a proximity switch to Dig. Input 1 for panel detection.
Temp.
Pr.S1
Wait
Pr.S1
20°C
Time
Cl
os
ed
Dig In 1
PWR
ON
Time
Cl
os
ed
Cl
os
ed
Cl
os
ed
Pr
og
.
En
d
Pr.t1
When a new panel is detected before the end of the first
soak time, the program restarts and the set point remains
equal to Pr.S1.
If no panel is detected, the instrument goes to Pr.S2 (idle
temperature) and remains there until a new panel arrives.
7.5 Manual Mode
This operative mode allows you to deactivate automatic
control and manually program the output power percentage
that is to be applied to the process.
When the instrument is in manual mode, the display shows
alternately the measured value and the message
oPLo
.
When manual control is selected, the instrument starts to
operate with the same power output as the last one supplied
by automatic mode and can be modified using the
and
buttons.
In case of ON/OFF control, 0% corresponds to the
“deactivated output status” while any value different from 0
corresponds to the “activated output status”.
As in the case of visualization, the programmable values
range from
H100
(100% output power with reverse action)
to
C100
(100% output power with direct action).
Notes: 1.
During manual mode, the absolute alarms are
operative while the relative alarms are disabled.
2.
If you set manual modes during program
execution, the program will be aborted.
3.
If you set manual modes during self-tune
execution, the self- tune function will be aborted.
4.
During manual mode, all functions not related
with the control (wattmeter, indipendent timer,
“worked time”, etc) continue to operate normally.
7.6 Stand-by mode
This operative mode also deactivates the automatic control
but forces the control output to zero.
In this mode the instrument operates as an indicator.
When stand by mode is selected the display shows alternately
the measured value and the message
St.bY
.
Notes: 1.
During stand by mode, the relative alarms are
disabled while the absolute alarms are operative
or not according to the ALxo (Alarm x enabling
during Stand-by mode) parameter setting.
2.
If you set stand by mode during program
execution, the program will be aborted.
3.
If you set stand by mode during self-tune
execution, the self- tune function will be aborted.
4.
During stand by mode, all functions not related
with the control (wattmeter, indipendent timer,
“worked time”, etc.) continue to operate normally.
5.
When the instrument is swapped from stand by to
auto modes, the instrument automatically starts
the alarm masking and the soft start functions.
8. ERROR MESSAGES
8.1 Out of range signals
The display shows the OVER-RANGE and UNDER-RANGE
conditions with the following indications:
Over-range
Under-range
The sensor break will be signalled as an out of range:
Note:
When an over-range or an under-range is detected,
the alarms operate as in presence of the maximum or
the minimum measurable value respectively.
To check the out of span Error condition, proceed as follows:
Notes: 1.
Check the input signal source and the connecting
line.
2.
Make sure that the input signal is in accordance
with the instrument configuration. Otherwise,
modify the input configuration (see Chapter 5).
3.
If no error is detected, send the instrument to
your supplier to be checked.
8.2 List of possible errors
ErAT
-
Fast Auto-tune cannot start. The measure
value is too close to the set point.
Push the
button in order to delete the error
message.
NoAt
-
Auto-tune not finished within 12 hours.
ErEP
-
Possible problem of the instrument memory.
The message desappears automatically.
If the error does not disappear, send the instru-
ment to your supplier.
