Device functions
Page 34
RES-5008
Version 2
message “no2”.
9.9
Heating up to the sealing temperature (HEAT)
With the activation of the “START” signal (and the PREHEAT signal deactivated simultaneously), the device-
internal target-actual comparison is enabled immediately and the heating element is heated up to the SETPOINT
temperature. The heating takes place until the signal is switched off. This process can also be triggered inde-
pendently of the START signal by pressing the “MANUAL” key, when the home position is displayed.
The “START” signal is activated through a 24 VDC signal to the terminals 16+7:
CAUTION
The activation of the START signal is not accepted while the AUTOCAL function is being executed
in the menu position “AC”.
The setpoint specification for the sealing temperature (menu item “SH”, [
S
eal
H
eat]) must be greater than 40 °C.
If the setpoint specified is lower, the heating process will not start. The setting range 1…39 °C is not available.
The “SEALHEAT” LED on the T-408-1 terminal lights up during the heating and control process on the sealing
temperature.
During a warning message with error nos. 104…105, 111…113, 211, the alarm relay is switched, when the START
signal is activated (
section 9.25 "Error messages" on page 48). A heating process does not take place.
CAUTION!
The PREHEAT-Signal (preheat) must be switched off during this heating and controlling process.
Otherwise it will not be heated to the sealing temperature but instead to the set preheating tem-
perature (
section 9.10 "Preheating (PREHEAT-Signal)" on page 34).
9.10
Preheating (PREHEAT-Signal)
In order to shorten the time for heating up to the adjusted SETPOINT temperature for applications for which time
is critical, the heating element can be heated to a preheating temperature, with the PREHEAT function.
The preheating temperature is set in the menu item “PH” [
P
re
H
eat]. The specification for the preheating temper-
ature must be greater than 40 °C. If the specification for the preheating temperature is lower, no heating process
takes place after activating the START signal or pressing the “MANUAL” button. The setting range 1…39 °C is not
available.
RES-5008
Max. 6 mA
16
7
START
(HEAT)
+
-
GND
24 VDC
START (HEAT)
HIGH:
≥
12 VDC
LOW:
≤
2 VDC
