Controller functions
Page 24
RES-403
The "OUTPUT" LED blinks repeatedly when the
"AUTOCOMP" function is executed and the actual
value output (terminals 17+14) is set to 0…3°C
(i.e.approx. 0VDC).
6.8
Temperature diagnosis
(as of October 2005)
An additional temperature diagnosis can be activated in
the ROPEX visualization software (
ª
section 6.10
"Diagnostic interface/visualization software (as of
October 2005)" on page 25). The RES-403 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 configured in the
factory to -10K and +10K. These values can be set
independently of one another in the ROPEX visualiza-
tion software.
If the actual temperature is inside the specified tole-
rance 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 (
ª
section 6.12 "Error mes-
sages" on page 26).
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
tolerance band limit), the corresponding error code
(309, 310) is indicated and the alarm relay is switched.
An additional delay time (0…9.9s) can be set in the
ROPEX visualization software. The first time the lower
tolerance band limit is exceeded, the temperature dia-
gnosis is not activated until the parameterized delay
time has elapsed. The temperature diagnosis function
can thus be explicitly suppressed, e.g. if the tempera-
ture drops temporarily owing to the closure of the
sealing jaws.
The values that can be set in the ROPEX visualization
software for the upper and lower tolerance band and
the delay time are identical to those for the
"Temperature OK" signal (MOD 46).
Function
AUTOCAL
signal
„AC“
t
t
0
0
AUTOCAL
AUTOCOMP
lit
t
OFF
„AUTOCAL“
t
OFF
LED
lit
„OUTPUT“
LED
24VDC
Δϑ
lower
Δϑ
upper
Set
Set+
Δϑ
lower
Set+
Δϑ
upper
Actual value
Time
Alarm
307