Controller functions
Page 36
RES-445
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 if the
heatsealing band cools down at a rate of more than
0.1K/second. This is additionally indicated with
step 7 in the Settings menu by the message
"Heatsealing band still hot! Please wait...".
As of software revision 012, this message is also
displayed if the controller cannot be calibrated when
the external "AUTOCAL" signal is activated (cooling
rate too fast).
2. If the "START" signal (24VDC or contact) or the
"PREHEAT" signal (24VDC or contact) is activated,
the AUTOCAL function is not executed. As of
software revision 024 this is additionally indicated
with step 7 in the Settings menu by the message
„Autocal locked ! (START-Sig. active)“ or „Autocal
locked ! (PREHEAT-Sig. active)“.
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
occurs (
!
Kap. 10.21 „Error messages“ auf
Seite 49). 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.
10.9
"START" signal (HEAT)
The heating process is activated by means of the
"START" signal in different ways, depending on the
time control status (timer function) (
!
Configuration
menu, step 26) :
1.
Time control off (deactivated):
When the "START" signal is activated, the
controller-internal set/actual comparison is enabled
immediately and the heatsealing band is heated up
to the SET temperature. 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.
2.
Time control on (activated):
If time control (timer function) is on, activating the
"START" signal starts the internally parameterized
timeout. The time at which the heatsealing band
begins to heat up depends on the setting of this
parameter. The "START" signal must be deactivated
again before the next timeout is activated.
Pressing the "HAND" key while the display is in the
home position causes the heatsealing band to start
heating up immediately (as described in 1). The
internal timeout is not started.
The "START" signal can be activated in two ways:
• By means of a 24VDC signal at terminals 3+4.
• By means of a control contact at terminals 2+7
The "START" signal is disabled as long as the
AUTOCAL function is executing in the
Settings menu (with step 7).
The set point that is selected for the heatsealing
temperature (step 1 in the Settings menu) must be
greater than 40°C. If not, the heatsealing band will not
be heated up.
The alarm relay is switched if the "START" signal is
activated while an alarm signal is indicating error codes
104…105, 111…113 or 211 (
!
!
RES-445
max. 6mA
3
4
START
(HEAT)
+
-
GND
24VDC
START (HEAT)
or
START TIMER
HIGH:
≥
12VDC
LOW:
≤
2VDC
RES-445
7
START
(HEAT)
with
contact
0V
2
max.
5mA
!
