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THE CONTROL SYSTEM
The Control System is comprised of the components
that signal, sense, command, and switch the oven’s
various components. Figure 7 shows a functional
diagram of all the components that make up the
Control System.
NOTE: The part numbers for each component can
be located on the drawings found throughout and
at the end of this manual.
GROUND
STATUS OK
I/O COM
1
2
OUT
240 VAC
3 PHASE
3
4
4
6
5
2
1
3
I/O COM
ENABLE
200-240
VAC IN
SPD
2
3
0-10V
1
BMSC
K1
MECH
RELAY
+ 24 VDC -
RELAY
MECH
K2
RELAY
MECH
K3
SSR
DUAL
BOARD
CONTROL
I/O
KEYPAD
VFD
DISPLAY
IR THERMOCOUPLE
EC THERMOCOUPLE
CC THERMOCOUPLE
SUPPLY
POWER
24VDC
IR ELEMENT COMMAND
CONVECTION HEATER COMMAND
MAG HV
COMMAND
COMMAND
MAG FILAMENT
MONITOR
INTERLOCK
INTERLOCK
INTERLOCK
+24VDC
+24VDC
+24VDC
COMMON
CMD
COMMON
+24VDC
PRIMARY SWITCH
SECONDARY SWITCH
K6
MECH
RELAY
+ 24 VDC - + 24 VDC - + 24 VDC -
VOLTAGE
COMMAND
COMMON
VOLTAGE INPUT
VOLTAGE
K7
RELAY
- 24 VDC +
MAGNETRON COOLING FAN COMMAND
PRIMARY SWITCH
NC
NO
C
NC
C
NO
SECONDARY SWITCH
MONITOR SWITCH
NC
C
NO
3(+) 4(-)
3(+) 4(-)
+V
-V
L
N
A (-)
C (+)
C (+)
A (-)
C (+)
A (-)
12
14
14
2
1
14
21
14
2
1
12
25 26
2
1
25 26
2
1
1
2
25 26
25 26
+24VDC
K5
K4
(U.S. ONLY)
FOR MORE DETAIL, SEE FIGURE 37
SENSOR
FIGURE 7: NGC (Tornado) Control System
13
U.S. ONLY