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15.3 COMMISSIONING WITH HEATED FOREIGN COMPONENTS
Commissioning takes place as described in chapters 16.1 and 16.2. The parameters for SP, ALSE,
Lo-t, Lfun, Fnct, rASL, SenS and Lin must be entered for the respective component (see chapter 12
and 13).
The parameter rASL must be determined. For this purpose, the time for heating the unit until the set-
point temperature is reached must be measured.
This is then followed by (empirical value): rASL = 0.8 (setpoint temperature/rate of temperature
rise)
The calculated rASL value must be entered rounded.
After entering the parameters, a self-optimization, described in chapter 15.2, has to be operated.
16
LOW TEMPERATURE ALARM AND EXCESS TEMPERATURE LIMITATION
The controller type 70304G is adjusted and wired so that it uses relay 2 as a low temperature alarm
output and relay 1 as an excess temperature limitation with permanent deactivation.
Both alarms are indicated on the controller front panel by the respective number (1 or 2) extinguish-
ing. This takes place if the setpoint temperature is higher or lower than 10 °C.
Operating state
Heating up
heating on
Normal
heating off
Alarm
16.1
RESTARTING AFTER EXCESS OR LOW TEMPERATURE ALARM
In order to restart the unit after a temperature alarm with permanent deactivation, the cause of the
alarm must initially be remedied.
With not programmed ramp functions, an alarm reset must take place as follows:
•
Press
EXIT
and
•
Switch off and on the mains voltage.
With programmed ramp functions, an alarm reset must take place as follows:
•
If the actual value is <±10°C to the setpoint press
Switch off and on the mains voltage.
•
In case of an alarm reset by switching off and on the mains voltage the ramp start value is equivalent to
the actual value.
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1
2
off
on
on
on
on
on
X
off
keys simultaneously or
Temperature controller 70304G | 1.00.02
3
on/off
on
off
X
EXIT
and
keys simultaneously or
17
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