Brainchild BTC-2500 - Page 91

UM25001C
60 minutes60 minutes 60 minutes60 minutes
60 C60 C 60 C60 C
5 minutes5 minutes
30
minutes
30
minutes
35
minutes
35
minutes
65 minutes65 minutes
-10 C-10 C -10 C-10 C
Figure 5.9Figure 5.9
Temperature Profile
of Chamber
Temperature Profile
of
Chamber
Example 2: Programmable Bread Baking OvenExample 2: Programmable Bread Baking Oven
Bread is baked in batches. A ramp is incorporated to control the thermal
gradient to suit for making the bread. A dwell timer is used to shut off the oven
power and announce the baker. The system is configured as shown in the
following diagram.
Bread is baked in batches. A ramp is incorporated to control the thermal
gradient
to suit for making the bread. A dwell timer is used to shut off the oven
power
and announce the baker. The system is configured as shown in the
following
diagram.
Figure 5.10Figure 5.10
A Bread Baking OvenA Bread Baking Oven
+
+
AC RelayAC Relay
OFF
ON
220VAC
Mains
220VAC
Mains
Heater
Heater
Baking
Oven
Baking
Oven
Push ON switch to start a batch. The temperature will rise with a ramp rate
determined by RAMP value. Bread is baked with the set point temperature for
a definite time which is programmed by TIME value, and then the power is
shut off. The temperature profile is shown in the following Figure.
Push ON switch to start a batch. The temperature will rise with a ramp rate
determined
by RAMP value. Bread is baked with the set point temperature for
a
definite time which is programmed by TIME value, and then the power is
shut
off. The temperature profile is shown in the following Figure.
BTC-2500 provides 4-20 mA signal to control the speed of the Inverter.SP.P2
being chosen for EIFN is for the purpose of accomplishing a dual PID control.
You can perform auto-tuning twice at SP1 and SP2 for initial setup to the dual
PID values. Refer and .sections 3-20 4-3
BTC-2500 provides 4-20 mA signal to control the speed of the Inverter.SP.P2
being
chosen for EIFN is for the purpose of accomplishing a dual PID control.
You
can perform auto-tuning twice at SP1 and SP2 for initial setup to the dual
PID
values. Refer and .sections 3-20 4-3
40
minutes
40
minutes
40
minutes
40
minutes
180 C180 C
180 C180 C
Cooling
down
Cooling
down
Restart a
new batch
Restart a
new
batch
30 C/min30 C/min
PV
30 C30 C
5
45
Time
( minutes )
Time
(
minutes )
A1FN=TIMR
SPMD=MINR
Time=40.0 ( minutes )
RAMP=30.0 ( C/min )
Alarm 1: Form B Relay
A1FN=TIMR
SPMD=MINR
Time=40.0
( minutes )
RAMP=30.0
( C/min )
Alarm
1: Form B Relay
Figure 5.11Figure 5.11
Temperature Profile
of Baking Oven
Temperature Profile
of
Baking Oven
91
12
34
5
8910
11
67
12
13
14
5V DC
Relay
5V DC
Relay