Controller functions
Version 1
RES-406
Page 29
Reasons for disabled AUTOCAL function:
1. The AUTOCAL function cannot be activated until 10 seconds after the controller is switched on. During this time
the controller reports "AUTOCAL disabled" ("AG" bit = 1) in the output data.
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 "AC" bit is activated, the function is executed automatically providing the cooling rate has fallen below
the above-mentioned value.
3. If the "START" bit ("ST" bit = 1) is activated, the AUTOCAL function is not executed ("HEAT" LED lit).
4. If the "RESET" bit ("RS" bit = 1) is activated, the AUTOCAL function is not executed.
5. AUTOCAL cannot be activated if error codes 1…3, 5…7 (As of February 2006 also: 101…103, 201…203, 801,
9xx) occur at start-up. AUTOCAL cannot be activated with error codes 5…7 (As of February 2006 also:
201…203, 801, 9xx) if the controller has operated correctly, at least one time, after start-up (
If the AUTOCAL function is disabled ("AG" bit = 1) and if you attempt to activate it ("AC" bit = 1) then
the "AUTOCAL" LED blinks fast (4Hz).
7.5.2
Start (ST)
When the "START" bit is activated ("ST" bit = 1), the controller-internal set/actual comparison is enabled and the
heatsealing band is heated up to the SET temperature. It remains at this temperature either until the "ST" bit is
reset or until the actual heating time exceeds the preset heating time limit (
section 7.7.5 "Heating time limit" on
page 37).
The "HEAT" LED on the front panel of the RES-406 lights up continuously for the duration of the heating phase.
A start request is not processed if the AUTOCAL function is active, the controller has reported an alarm, the set
point is less than 20°C higher than the calibration temperature or the "RS" bit is set. In all these cases the "HEAT"
LED blinks.
The heating process is terminated if the "ST" bit is reset or if a PROFIBUS fault occurs.
The "ST" bit is only accepted if the AUTOCAL function is deactivated and there are no alarms.
The alarm relay is switched if the "ST" bit is activated while a warning message is indicating error codes
8...12 (as of February 2006 also: 104…106, 111…114, 211, 302 oder 303) (
section 7.16 "Error messages" on
page 49). The heatsealing band is no longer heated up.
7.5.3
Reset (RS)
This bit resets the controller if the controller reports an alarm.
No AUTOCAL or START requests are accepted as long as the "RS" bit is set. From then on, only fault nos. 5 and
7 (As of February 2006: 201…203, 901, 913) are evaluated and output by the fault diagnosis function. The power
section is not activated in this state and no measuring impulses are generated. Consequently, the actual value is
no longer updated. The reset request is not processed until the "RS" bit is reset. The PROFIBUS communication
is not interrupted by a controller reset. The controller simply requests the parameter data from the PROFIBUS
master again.
As of production date February 2006, the controller actual value output changes to 0…3°C (i.e. approximately
0VDC) while the "RS" bit is being activated. This may be interpreted by the higher-level controller (e.g. a PLC) as
feedback.
The "AUTOCAL" function is not aborted if the "RS" bit is activated while it is still executing.
The controller performs an internal initialization run lasting approximately 500ms after the "RESET"
bit is deactivated. The next heatsealing process cannot be started until it has finished.
!
!
!
