Instruction Manual
D30393 | Date 10/2014 33
Operation and control
Electronic temperature monitoring (
Electronic temperature monitoring (
TWW)
TWW)
Electronic temperature monitoring (TWW)Electronic temperature monitoring (
Electronic temperature monitoring (TWW)Electronic temperature monitoring (
The manually set monitoring temperature
min
and
max
of the overtemperature control is
max of the overtemperature control is max
monitored by an adjustable over/undertemperature controller (TWW) protection class 3.3 acc.
to DIN 12 880. If the manually set monitoring temperature
max
is exceeded, the TWW takes
max is exceeded, the TWW takes max
over temperature control and begins to regulate the monitoring temperature (Fig. 18).
t
°C
Setting MAX
Set temperature
Controller error
Emergency operation
Fig. 18
Schematic diagram of how TWW
temperature monitoring works