Controller functions
Version 1
RES-408
Page 41
You should always wait for the heatsealing band and the bar to cool down (to ambient temperature)
before activating the "AUTOCAL" function.
Reasons for locked AUTOCAL function:
1. The "AUTOCAL" function cannot be activated if the heatsealing band cools down at a rate of more than 0.1K/
s. This is additionally indicated in the "AC" [
A
uto
C
al] step by the message "no1" (up to May 2006: "no").
2. If the "START" signal is activated, the "AUTOCAL" function is not executed. This is additionally indicated in the
"AC" [
A
uto
C
al] step by the message "no2" (up to May 2006: "no").
3. Directly after the controller is powered up, the "AUTOCAL" function cannot be activated if a fault with error code
101…103, 201…203, 801, or 9xx is indicated (
section 11.21 "Error messages" on page 52). If the controller
has already operated correctly - a minimum of once - after powering up, the "AUTOCAL" function cannot be
activated with error codes 201…203, 801, or 9xx.
11.9
Heating to the heatsealing temperature (HEAT)
When the "START" signal is activated, the controller-internal set/actual comparison is performed immediately and
the heatsealing band is heated to the SET temperature (the "PREHEAT" signal must be deactivated). It remains
at this temperature until the signal is deactivated again. This process can also be started independently of the
"START" signal by pressing the "HAND" key while the display is in the home position (on controllers manufactured
up to December 2000, the same effect can be achieved by pressing the "HAND" key in the "HA" [
HA
nd] step).
The "START" signal is activated by applying a 24VDC signal at terminals 5+6.
The "START" signal is disabled as long as the "AUTOCAL" function is executing in the "AC" step.
On controllers manufactured as of June 2006, the set point selected for the heatsealing temperature ("SH" [
S
eal-
H
eat]) step) must be greater than 40°C. If not, the heatsealing band is not heated up.
The "SEALHEAT" LED on the T-400 or T-408-1 terminal lights up during the heating and control process until the
heatsealing temperature is reached.
The alarm relay is switched if the "START" signal is activated while an error message is indicating error codes
104…105, 111…113 or 211 (
section 11.21 "Error messages" on page 52). The heatsealing band is not heated.
!
RES-408
max. 6mA
5
6
START
(HEAT)
+
-
GND
24VDC
START (HEAT)
HIGH:
≥
12VDC
LOW:
≤
2VDC
!