Fairbanks H90-5200-A Digital Instrument - Manual (Page 55)

Appendix X: KEYBOARD SCHEMATIC / WIRING DIAGRAM
50515 55 Issue #2 4/04
Power
Supply
1
1
1
24 13
12
JP1
JP2
JP7
JP6
JP3 1
1 1
Row 1
Row 2
+10V
Col 3
SP2
SP1
GND
SP3
GND
SP4
+5V
Data
+5V
Clock 1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
Serial Accessories
ACC 145 (20mA Serial)
ACC 146 (RS-232)
ACC 147 (RS485/422 Output)
ACC 148 (4-20 Analog)
See Load Cell
Wiring in
Section 3.D
See
Schematic
1. A C
2. A CC
3. G ND
Power Setpoint/
Serial I/0
Keyboard Load Cell
7
14 8
Display
D3
D2
D4
D1
D5
D0
D6
D7
SDA
SOL
A15
10 INT
A14
A13
+10V
SLEEP
I/O
RD
ALE
WR
1. C TS
2. R TS
3. R X
4. T X
5. G ND
6. + TX
7. - TX
8. + RX
9. - RX
10.
11. + 10V
12. S P1
13. S P2
14. S P3
15. S P4
16. G ND
BR
BL
O
R
Y
Y BR
BL
O
R
Y
Y
7
6
5
4
8
3
7
6
5
4
8
3
RS-232
9 Pin AMP
Connector
Current Loop
9 Pin AMP
Connector
6
1
2
3
4
5
Setpoints
TB3
➨
GND
+5V
Serial Output Acc.
"7 / PROG"
" 1 "
KEYPAD SCHEMATIC DIAGRAM
COL 0
COL 1
COL 2
COL 3
COL 4 KEY
COL 5
SPARE ROW 1
ROW 0 ROW 2
ROW 3
"STOP"
"TRIM"
"PRINT"
"START"
"9 / "
"UNITS"
"GROSS /NET"
"AUTO TARE"
"ZERO"
"ID"
"TARE RECALL"
"FUNC"
"8 / TEST"
"4 / TIME"
" . / CLEAR"
"1 / SET PT"
"5 / DATE"
"2 / 4-20mA"
"0"
"6 / "
"3 / I/O"
"ENTER"
1 2 3 4 5 6 7 8 9 10 11 12
or
or
or
50514-6