Controller functions
30
UPT-640 (as of SW 100)
9.6
Temperature setting (set point
selection)
The heatsealing temperature can be set on the
UPT-640 (as of SW 100) controller in three ways:
• By means of the setting in menu step 101.
• By applying a 0…10VDC voltage to the analog input
at terminals 20+23.
The relationship between the applied voltage and the
SET temperature is linear.
Voltage values:
0VDC
0°C
10VDC
300°C or 500°C (depending on the
controller configuration).
Please refer to Kap. 9.7 „Temperature indication/actual
value output“ auf Seite 31 for a circuit diagram.
If the heatsealing temperature is to be determined by a
voltage at the analog input at terminals 20+23, it must
be set to 0°C with menu step 101.
If an external heatsealing temperature
(analog input, terminals 20+23) and an
internal heatsealing temperature (step 101) are
specified simultaneously, the higher of the two
temperatures is used and indicated in the home
position.
The maximum value of the setting range is
limited either by the maximum value speci-
fied with step 206 in the Configuration menu or by
the heatsealing band type/temperature range set
with step 205.
The set point that is selected for the heatsealing tempe-
rature must be greater than 40°C. If not, the heatse-
aling band will not be heated up when the "START"
signal is activated or the "HAND" key is pressed.
The set heatsealing temperature is displayed in the
main menu once it has been entered.
If the heatsealing temperature is specified via
the analog input at terminals 20+23, the
external voltage must be activated at least 100ms
before the heatsealing process starts. If not, the
heatsealing temperature will not reach the required
value.
• By connecting a 2kohm potentiometer (e.g. PD-3 or
PD-5) to terminals 20, 23 and 24:
The controller is configured for this purpose so that a
fixed 10VDC reference voltage is available at the
analog output at terminal 24 (
menu step 216,
section 9.7 "Temperature indication/actual value
output" on page 31).
This voltage is divided by the PD-x set point potentio-
meter and supplied to the analog input at terminal 23.
You can then specify the set temperature in °C in the
digital window of the potentiometer.
Once again, the set temperature must be set to zero in
step 101.
UPT-640
0…10VDC
+
23
20
+
-
GND
!
!
!
UPT-640
24
U
Ref
= 10VDC
23
GND
20
CW
+
PD-x
(2k)
Analog input
0…10VDC
20
23
24
3
1
2
Potentiometer with
digital dial PD-x
