Heat-Cool Control - Brainchild C21 User Manual

4 - 3 Heat-Cool Control

4 - 3 Heat-Cool Control
An injection mold required to be controlled at 120 C to ensure a An injection mold required to be controlled at 120 C to ensure a
consistent quality for the parts. An oil pipe is buried in the mold. Since consistent quality for the parts. An oil pipe is buried in the mold. Since
plastics is injected at higher temperature ( e.g. 250 C ), the plastics is injected at higher temperature ( e.g. 250 C ), the
circulation oil needs to be cooled as its temperature rises. Here is an circulation oil needs to be cooled as its temperature rises. Here is an
example: example:
Plastics
Freezer
4-20 mA
OP1 OP2
PV SP1
53
Injection Mold
120
Oil Tank
OUT2 OUT1
1,2 9
10
C F
SP2 MAN AT
R
C91
Oil
Pump
RTD
Heater
Supply
5
INPT
4
3
Figure 4.3 Figure 4.3
Heat-Cool Control Example Heat-Cool Control Example
UM0C911A
L L
L L