Controller functions
UPT-606
Page 33
9.7.11 Maximum starting temperature
(as of software revision 100)
In the PROFIBUS paramter data (GSD-file) or in the
DPV1 protocol extension the maximum starting tempe-
rature can be adjusted. This temperature is the
maximum permissible actual value at the start time.
The value is determined by the controller at the start of
each impulse and compared with the preset value.
This function serves to monitor the cooling circuit.
If the cooling system is intact, the tool is cooled down
according to curve 1). If the cooling system is faulty, it
is cooled down according to curve 2) because the water
is no longer cooled. As a result, the temperature is
always at least the value set with this menu step. In this
case, the controller ignores the next heating command
and reports an alarm. The corresponding error
code 305 is indicated and the fault output is switched
(
section 9.13 "Error messages" on page 40). This
prevents the UPT sealing bar from being damaged
beyond repair.
The maximum value of the setting range is
limited either by the value for the maximum
temperatue or by the temperature range. Both
values are preset in the PROFIBUS parameter data
(GSD file) or in the DPV1-protocol extension.
Setting:
We advise you not to set this parameter until you have
determined the optimum heatsealing parameters (tem-
perature and cooling time) for productive operation.
The starting temperature should be set to approxi-
mately 50% of the heatsealing temperature for the trial
run, to enable the optimum working parameters to be
established correctly.
9.7.12 Temperature diagnosis
(as of GSD Version v2.0)
An additional temperature diagnosis can be activated
by means of the PROFIBUS parameter data or the
DPV1 protocol extension. The UPT-606 checks
whether the ACTUAL temperature is within a settable
tolerance band ("OK" window) on either side of the SET
temperature. The lower (
) and upper
(
) tolerance band limits are the same like in the
„Temperature OK“ function (
section 9.6.5 "Tempera-
ture OK (TO)" on page 28). The limits are configured in
the factory to -10K and +10K.
If the actual temperature is inside the specified toler-
ance band when the "START" signal is activated, the
temperature diagnosis is activated as well. If the
ACTUAL temperature leaves the tolerance band, the
corresponding error code (307 or 308) is indicated and
the alarm relay is switched (
section 9.13 "Error mes-
sages" on page 40).
Set starting
Time
temperature
Temperature
2)
1)
Starting temperature if cooling
system faulty
Starting temperature if cooling system OK
!
Δϑ
lower
Δϑ
upper
Set
Set+
Δϑ
lower
Set+
Δϑ
upper
Actual value
Time
Alarm
307