Special Functions for Plastic Machines
IP244
C79000–B8576–C860–02
4–78
Zone wall
temperature:
Setpoint temperature
of material
Cascade
”ON”
Master controller
*F1
Switch:
Switch:
Evaluation
factor:
Limiter:
Setpoint:
Zone
controller:
Zone heating:
SZ (cumulative
setpoint)
S0
S1
B1
SB1
SF1
B2 Bn
B12
SZ2
SZn
SZ12
SB2 SBn
SB12
–
–
–
–
*F2
*Fn
*F12
Extruder
Actual
value
smoothing
(1 cycle)
Cycle
Machine
S2
Sn
S12
SFn
SF2
SF12
triggering
–
PI
Temperature of
material:
...
.
.
.
.
.
..
PIDPID
PID
PID
S0 to S12 Software switches
*F1 to *F12 Evaluation factors
B1 to B12 Limiters
SB1 to SB12 Active setpoints of the individual controllers
SZ1 to SZ12 Cumulative setpoints
Fig. 3.2.6/1 Cascaded control for an extruder
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