Section 2: Getting Started 2-7

70055MP Revision D February 3, 2000

I/O Board

The I/O Circuit board (Figure 2-5) contains sensor signal conditioning

circuitry and hardware to interface to the sensors mounted on the

transformer.

K4
Q10
J19
R113
R112
R111
Q9
K1
D28
D31
K3
J15
J14 J16
J13
6V
9V
17
CHANNEL
1 16 14
17
15 1312 11 10 9
B
A
A
B
C
B
A
COM
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
Y
EN
C
B
A
+12
REL
A3
A2
C27
Z9
Z13
R43
Z8
R37
Z10
R41
Z12
R39
R40
Z11
R42
Z14
R38
R44
R71
C4
C33
D8
C2
C34
GT10
JP13
J1
J2 J17
J7
J6
J3 TP5
RN4 U1
C18
TP7 TP8
U11
C13
C22
R48
C24
Q4
Q6
U3
C15
R49
R16
U10
R24
R102
C14
R3
U13
C19
R101
R100
Q5
D9
R6
R64
C3
Q2
C23
Q1
C21
Q3
R20
D29
D32
D11
D30
RN6
R69
R70
R67
R68
C11
C16
U2
D10
R18
R17
R15
RJ1
J9
J12
F1
JP7
GT14 GT16
J5
JP1JP2JP3JP4JP6JP8
GT8
GT9GT11GT13GT15
C30
J10
D14
D18
D17
D4
D3
U14
D16
R92
R7
R50
R53
R8
R12
R99
D25
R98
D24
R97
D12
U9
J20
U12
DIGITAL ANALOG 2ANALOG 1 CURRENT VOLTAGE
J4
C17
JP5JP9
TP2
TP9 TP6
RN1
T4
MOV7
C28
T3
MOV6
C26
T2
MOV5
C25
T1
MOV1
C1
GT12GT6GT4GT2GT17
GT1 GT3 GT5 GT7
D13
D2
D1
U4
RN2
TP3 TP4
U6 U5
C20
C9
C7
U7
C8C10
TP1 C31
C32
C12
COM
J8
K2
Q8 Q7
R109
R108
J18R110
NORMINV
NORMINV
ANN1
ANN2
U8
C6
C5
GND
OPEN = 12V
MODEM VOLTS
+12
C
A
B
Y
EN
Ribbon Cable
Connector
(To CPU Board)
Sensor
Ground
Annunciator
Inputs
Sensor
Inputs Current
Inputs
Control
Isolator
Inputs Voltage
Inputs
Outside Phone
Line Connection Internal Modem
Connection
Alarm #1
Jumper
Alarm #2
Jumper
Power
Jumper
SENSOR
COMMON
SENSOR
COMMON1ST CONTROL ISOLATOR2ND CONTROL ISOLATORCOM COMREDGRNPHONE
ANNUNCIATOR
#1
NC COM NO
ANNUNCIATOR
#2
NC COMNO
HEATER
LINENEUT
VOLTAGE
INPUT
#1
VOLTAGE
INPUT
#4
VOLTAGE
INPUT
#3
VOLTAGE
INPUT
#2
MOTORCURRENTSENSOR INPUTSSENSOR INPUTS
SENSOR
POWER(24 VDC)
SENSOR
POWER(24 VDC)

Figure 2-5: I/O Circuit Board