Startup and operation
20
UPT-640 (as of SW 100)
3.
"Active if Tact = Tset", with latch function
(factory setting)
"Output 1" is conductive if the actual value is inside
the specified temperature tolerance band
(steps 207, 208). If the actual temperature leaves
the tolerance band once while the "START" signal is
active, "Output 1 is no longer conductive. "Output 1"
does not become conductive again until the next
"START" signal is activated and can thus also be
interrogated by the higher-level PLC after a heatse-
aling process.
Other settings are available in this menu when time
control (timer function) is active. They are described in
section 9.23.7 "“Output 1“/ „Temperature OK“ signal
(with time control)" on page 43.
8.3.9
Temperature diagnosis
The temperature diagnosis function can be activated by
means of step 217 in the Configuration menu. The
UPT-640 (as of SW 100) then checks whether the
ACTUAL temperature is inside a specifiable tolerance
band ("OK" window) on either side of the SET tempera-
ture. The lower (
) and upper (
) limits
of the tolerance band can be changed independently of
one another by means of steps 207 + 208 (factory set-
ting: -10K or +10K).
If the ACTUAL temperature is inside the specified toler-
ance band when the "START" signal is activated, the
temperature diagnosis is also activated. If the ACTUAL
temperature leaves the tolerance band, the corre-
sponding error code (307, 308) is indicated and the
fault output is switched (
section 9.27 "Fault areas
and causes" on page 50). If a heatsealing cycle is in
progress, it is immediately interrupted.
If the temperature diagnosis is not activated by the time
the "START" signal is deactivated (i.e. if the ACTUAL
temperature does not exceed the upper or lower tole-
rance band limit), the corresponding error code
(309, 310) is indicated and the fault relay is switched.
If the temperature diagnosis function is activated, an
additional delay time of 0 to 9.9s can be parameterized
for the temperature timeout with step 218 in the Confi-
guration menu. The first time the lower tolerance band
limit is exceeded, the temperature diagnosis is not acti-
vated until the parameterized delay time has elapsed.
The temperature diagnosis function can thus be expli-
citly deactivated, e.g. if the temperature drops tempora-
rily owing to the closure of the sealing jaws.
8.3.10 Heatup timeout
The heatup timeout can be parameterized with
step 219 in the Configuration menu ("0" = OFF).
This timeout starts when the START signal is activated.
The UPT-640 (as of SW 100) then monitors the time
required for the ACTUAL temperature to reach 95% of
the SET temperature. If this time is longer than the
parameterized time, the corresponding error code
(304) is indicated and the fault relay is switched
(
section 9.27 "Fault areas and causes" on page 50).
8.3.11 Configuration of the alarm relay
The alarm relay is set with step 215 in the Configuration
menu.
There are two possible settings:
1.
"Normal" (Factory setting)
Alarm relay contact closed by a fault
2.
"Inverse"
Alarm relay contact opened by a fault
Δϑ
lower
Δϑ
upper
Set
Set+
Δϑ
lower
Set+
Δϑ
upper
Actual value
Time
Error code
307
Set
95% of Set
Actual value
Time
Heatup time
Error code
304
Timeout
