Controller functions
Page 26
RES-403
Version 1
The AUTOCAL function is activated either by means of a 24VDC pulse at terminals 8+13 or by pressing the
AUTOCAL button on the controller.
The automatic calibration process takes about 10…15 seconds. The heatsealing band is not heated during this
process.
The yellow LED on the front panel lights up when the AUTOCAL function is active. The actual value output (ter-
minals 14+15) is 0…3°C (corresponds to app. 0 VDC) during this process.
If the temperature of the heatsealing band varies on controllers manufactured as of October 2005, the "AUTOCAL"
function is executed a maximum of three times. If the function still cannot be terminated successfully, an error
message appears (
section 6.12 "Error messages" on page 34).
You should always wait for the heatsealing band and the bar to cool down (to ambient temperature)
before activating the AUTOCAL function.
Reasons for disabled AUTOCAL function:
1. The AUTOCAL function cannot be activated until 10 seconds after the controller is switched on. If you attempt
to activate it sooner, it will not function.
2. The AUTOCAL function is not activated if the heatsealing band is cooling down at a rate of more than 0.1K/
sec. If the control signal is activated, the function is activated automatically providing the cooling rate has fallen
below the above mentioned value.
3. If the "START" signal (24VDC) is active, the AUTOCAL function is not executed ("HEAT" LED lit).
4. AUTOCAL cannot be activated if error codes 101…103, 201…203, 801 or 9xx (up to September 2005: error
codes 1…3, 5…7) occur at start-up. AUTOCAL cannot be activated with error codes 201…203, 801 or 9xx (up
to September 2005: error codes 5…7). If the controller has operated correctly, at least one time, after start-up
(
section 6.12 "Error messages" on page 34).
If the AUTOCAL function is disabled and if you attempt to activate it then the "AUTOCAL" LED
blinks.
6.5
"START" signal (HEAT)
When the "START" signal is activated, the controller-internal set/actual comparison is enabled and the heatsealing
band is heated up to the SET temperature. It remains at this temperature until the signal is deactivated.
The "HEAT" LED on the front panel of the RES-403 is lit continuously for the duration of the heating phase.
The "START" signal can be activated in two ways:
!
!