Device functions
Seite 36
UPT-6012
Version 2
If the cooling system is intact, curve 1) applies. If the cooling system is faulty, curve 2) applies instead because
the water is no longer cooled. The temperature never falls below the value set with this menu step. In this case,
the controller ignores the next heatup command. Error code 305 appears and the alarm relay is switched
(
section 8.19 "Error messages" on page 47). The idea is to prevent the UPT sealing bar from being destroyed.
The maximum value of the setting range is limited by the specified maximum value and the set temperature range.
Both values are selected in the parameter data.
Setting:
It is advisable not to set this parameter until you have determined the optimum heatsealing parameters (temper-
ature and cooling time) for production. The start temperature should be set to approximately 50% of the heat-
sealing temperature for the trial run, to enable the optimum working parameters to be established correctly.
8.7.10 Temperature diagnosis
An additional temperature diagnosis can be activated in the parameter data (ESI file). The UPT-6012 checks
whether the actual temperature is within a settable tolerance band ("OK" window) either side of the set tempera-
ture. The high (
) and low (
) tolerance limits are the same as for the "Temperature OK" function
(TO bit
section 8.6.6 "Temperature OK (TO)" on page 25). The limits are set to -10 K and +10 K by default.
If the ACTUAL temperature is inside the specified tolerance band when the START signal is activated, the tem-
perature diagnosis is activated as well. If the ACTUAL temperature leaves the tolerance band, the corresponding
error code (307, 308) appears and the alarm relay is switched (
section 8.19 "Error messages" on page 47).
If the temperature diagnosis is not activated by the time the START signal is deactivated (i.e. if the ACTUAL tem-
perature does not exceed the high or low tolerance limit), the corresponding error code (309, 310) appears and
the alarm relay is switched.
An additional delay time (0..9.99 s) can be set in the parameter data (ESI file). The first time the low tolerance limit
is exceeded, the temperature diagnosis is not activated until the configured delay time has elapsed. The temper-
Set start
Time
temperature
Temperature
2)
1)
Start temperature if cooling
system faulty
Start temperature if cooling system OK
Δϑ
high
Δϑ
low
Set
Set+
Δϑ
low
Set+
Δϑ
high
ACTUAL temperature
Time
Error code
307