Controller functions
Version 1
RES-401
Page 23
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 (as of October 2005: "HEAT"
LED lit).
4. If the controller has already operated correctly - at least once - after starting up, the "AUTOCAL" function cannot
be activated if the "ALARM" LED is lit continuously (up to September 2005: If the twin-color LED lit continu-
ously).
If the AUTOCAL function is disabled and if you attempt to activate it then the "AUTOCAL" LED blinks
(up to September 2005: The twin-color LED lits red for 1s (except case 4)).
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.
As of October 2005: The "HEAT" LED on the front panel of the RES-401 is lit continuously for the duration of the
heating phase.
The "START" signal can be activated in two ways:
• By means of a 24VDC signal at terminals 12+13
or
!
!
13
12
RES- 401
max. 6mA
START
(HEAT)
24VDC
LOW: 2VDC
START
(HEAT)
HIGH: 12VDC
GND
