Device functions
Version 2
UPT-6010
Seite 27
8.6.3
Alarm active (AL)
If the AL bit is set, an alarm has been triggered but not yet reset. The error code provides information on the exact
cause (
section 8.19 "Error messages" on page 46).
8.6.4
Warning active (WA)
This bit can be set in addition to the AL bit. If the WA bit is set, a warning is output to indicate the current fault. In
this case, the alarm relay is not active.
8.6.5
Temperature achieved (TE)
The TE bit is set if the actual temperature exceeds 95% of the set temperature. This status bit is reset again as
soon as you exit control mode (ST bit = 0) or a fault is signalled (AL bit = 1).
8.6.6
Temperature OK (TO)
The UPT-6010 checks whether the actual temperature is within a settable tolerance band ("OK" window) either
side of the set temperature. The high (
) and low (
) limits of the tolerance band can be changed inde-
pendently of one another in the parameter data (
section 8.7 "Parameter data" on page 29). The following set-
tings are possible:
1.
"Off"
The TO bit is always reset.
2.
"Active when Tact = Tset" (factory setting)
The TO bit is set if the actual value is inside the specified temperature tolerance band. If the actual temperature
is outside of the tolerance band, the TO bit is reset (see graph below).
Unlike the "Temperature achieved" status bit (TE bit), the actual temperature is evaluated independently of the
control mode.
3.
"Active when Tact = Tset" with latch function
A heatsealing cycle starts when the ST bit is set. The TO bit is set when the actual temperature reaches the
temperature tolerance band for the first time during a heatsealing cycle. If the actual temperature leaves the
tolerance band again while the ST bit is still set, the TO bit is reset (Fig. a.). If the actual temperature does not
leave the tolerance band while the ST bit is still set, the TO bit is not reset until the start of the next heatsealing
cycle (latch function, Fig. b.). The switching state of the TO bit can thus be queried after the ST bit has been
reset and before the start of the next heatsealing cycle.
Δϑ
high
Δϑ
low
Set
Set+
Δϑ
low
Set+
Δϑ
high
Actual value
Time
Time
0
1
TO bit
