Controller functions
UPT-640 (as of SW 100)
33
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 107 in the Settings menu by the message
"Heatsealing band still hot! Please wait...".
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
"CH1" signal (24VDC or contact) is activated, the
AUTOCAL function is not executed. This is additio-
nally indicated with step 107 in the Settings menu by
the message „Autocal locked ! (START-Sig. active)“
or „Autocal locked ! (CH1-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 (
section 9.27 "Fault areas and causes" on
page 50). If the controller has already operated cor-
rectly - a minimum of once - after powering up, the
AUTOCAL function cannot be activated with error
codes 201…203, 801 or 9xx.
The base resistance of the heating elements
rises continuously during operation (con-
struction-conditioned). Due to this the AUTOCAL
function must be executed every 100.000 sealing
cyles for preventing measurement failures of the
ACTUAL temperature.
9.9
"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 209) :
1.
Time control off (deactivated):
When the "START" signal is activated, the con-
troller-internal set/actual comparison is enabled
immediately and the heatsealing band is heated up
to the SET temperature. It remains at this tempera-
ture until the signal is deactivated again. This pro-
cess 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 Set-
tings menu (with step 107) or the "RESET" signal is
active.
!
!
UPT-640
max. 6mA
3
4
START
(HEAT)
+
-
GND
24VDC
START (HEAT)
or
START TIMER
HIGH:
≥
12VDC
LOW:
≤
2VDC
UPT-640
7
START
(HEAT)
with
contact
0V
2
max.
5mA
!
