Controller functions
RES-445
Page 33
10.6
Temperature setting (set point
selection)
The heatsealing temperature can be set on the
RES-445 controller in three ways:
• By means of the setting in menu step 1.
• 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. 10.7 „Temperature indication/
actual value output“ auf Seite 34 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 1.
If an external heatsealing temperature
(analog input, terminals 20+23) and an
internal heatsealing temperature (step 1) 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
specified with step 23 in the Configuration menu or
by the heatsealing band type/temperature range set
with step 22.
The set point that is selected for the heatsealing
temperature must be greater than 40°C. If not, the
heatsealing 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:
(This setting is possible as of software revision 017)
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 33,
Kap. 10.7 „Temperature indication/actual value output“
auf Seite 34).
This voltage is divided by the PD-x set point
potentiometer 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 1.
RES-445
0…10VDC
+
23
20
+
-
GND
!
!
!
RES-445
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
