Controller functions
UPT-640 (as of SW 100)
45
9.24.1 Temperature setting
The temperature of the release impulse can either be
set in step 115 or specified by applying an external
voltage at the analog input (terminals 23+20).
The release impulse temperature is set in the
same way as described for the temperature
selection function (set point selection). Please
heed the instructions and recommendations con-
tained in section 9.6 "Temperature setting (set
point selection)" on page 30!
9.24.2 Impulse generated internally
The timer function must be set to
"ON with internal
release imp."
for this purpose in step 209
(
section 9.23 "Time control (timer function)" on
page 38).
The timeout for the release impulse then begins imme-
diately after the end of the heatsealing phase (i.e. at the
end of the cooling phase). You can also configure a
delay (step 11) and a duration (step 12) for the release
impulse in addition to the temperature.
A release impulse is not generated if the
release temperature (step 115) or the impulse
duration (step 117) are set to "0".
9.24.3 Impulse generated externally
If this configuration is selected, the release impulse is
controlled by activating the external control signal CH1.
This signal can be activated in two ways:
• By means of a 24VDC signal at terminals 22+4.
• By means of a control contact at terminals 2+19.
The following functions are possible, depending on the
time control setting in step 37 (
section 9.23 "Time
control (timer function)" on page 38):
1.
If time control is "OFF"
The delay and the impulse duration cannot be spe-
cified internally by the controller. The start and dura-
tion of the release impulse are dependent on the
activation of the external control signal CH1 (termi-
nals 22+4 and 2+19).
The maximum impulse duration is limited
internally by the controller to 5seconds, in
order to avoid damaging the heating element. If this
time limit is exceeded, heating is terminated auto-
matically.
2.
If time control is "ON with external release imp."
With this setting the delay (step 116) and the dura-
tion (step 117) of the release impulse are specified
by the controller.
The release impulse (i.e. the delay) starts when the
external control signal CH1 is activated.
A release impulse cannot be started until the
end of the heatsealing cycle (i.e. the end of
the cooling phase). If the CH1 control signal is acti-
vated earlier – or if the temperature and the impulse
duration (steps 115 and 117) are set to "0" – a
release impulse is not generated.
!
!
UPT-640
max. 6mA
22
4
Rel. imp.
(CH1)
+
-
GND
24VDC
Release impulse
HIGH:
≥
12VDC
LOW:
≤
2VDC
UPT-640
19
Release
impulse
(CH1)
with
contact
0V
2
max.
5mA
!
!
