Page2of 3
Filename: 310display-d2.tcw
Date: 12/20/97
By:R. Fenske
310DISPLAY-D
SCHEMATIC
TEMP.
ACTUAL
FROM
HEATED
ZONE
PUSH-
BUTTON
CIRCUITS
SEE
PAGE1
2,13
3,12
7,8
+
-
LM324
U4/U5
10
9
8
+
-
U1
LM324
5
6
7
+
-
LM324
U1
+12V
+12V
R3
10K
R2
100K
D1
1N4004
R1
100K
C1
1000
uF
+1.2V
+1.2V
1
3
4
5
2
6
R6
100OHM
1WATT
SCR1
Q6004
D3
1N4004
CARRIERFILTER
BAKE-OUTSWITCH
(MOMENTARY)
R1&C9PRODUCE
AFIVEMINUTE
TIMECONSTANT.
CARRIERFILTER
BAKESFORFIVE
MINUTES.
ACHOT
UNSWITCHED
FROMACHOTBUS
BLOCK (UNSWITCHED)
FROMACNEUTRALBUS
BLOCK (UNSWITCHED)
TOCARRIERFILTER+
TOCARRIERFILTER -
TOAIRCOMPRESSOR+
TOAIRCOMPRESSOR -
AIRCOMPRESSOR
ON /OFFSWITCH
+12V
R8
R7
180K
R9
1K
5,10
6,9
1,14
+
-
LM324
U4/U5
3
2
1
+
-
LM324
U1
+1.2V
12
13
14
+
-
U1
LM324
1
3
4
5
2
6
R12
100OHM
1WATT
SCR2
Q6004
ACHOT
UNSWITCHED
ALARM
ALARMOUTPUTTO
INTERLOCKSWITCH
ANDPOWERRELAY.
THISCIRCUITSWITCHES
OFFACPOWERTOTHE
BUSBOARDS IFTHERE
ISATHERMOCOUPLE
CIRCUITFAILURE. SEE
ACBLOCKSCHEMATIC.
2
3
-12V
6
+12
+
-
U6
LF356
SIG -
+5V
GND
SIG. IN
1.234
SIG. -
(GND)
SIG. +
SIG. IN
DISPLAY
DISPLAY
TOGGLE
SWITCH
+5V
OVEN
ACTUAL
SIGNAL+
FROMALL
PUSH-
BUTTONS
SEE
PAGE1
R5
U1
MOC3030
(220V-MOC3040)
100OHM
1WATT
D2
R4
1K
CARRIER
FILTERLED
LIGHTSWHEN
FILTER ISON
D4-D11
1N914
1N914
R10
10K
R13
1K
LEDLIGHTSWHEN
THERMOCOUPLE
GOESLOW
D13
R11
100OHM
1WATT
U3
MOC3030
(220V-MOC3040)
R17
100K
1M
R18
1M
C5
0.1uF
CARRIERFILTERAND
AIRCOMPRESSOR
ACCIRCUITS
ALARM
CIRCUIT
DISPLAYBUFFER
ANDZEROOFFSET
4.5V=
450DEG.C
50mV=
5DEG.C
2
S2
S1
1
0
8
4
2
6
INTERLOCKSWITCH
POWERRELAY
AC
NEUTRAL
5
1
+12V
20K
ZERO
POT
U4/U5 VERIFYTHE
THERMOCOUPLERANGE
OFFOURHEATZONE
CIRCUITS
REV.: 07/01/99
By:R.PFEIFER
