Load Cells - Rice Lake IQ PLUS 710 Installation Manual

1 2 3
LOAD CELL CONNECTOR
J4
JP1 JP2
+20 mA
7
J9
–20 mA 6
Prn RxD 5
Prn TxD
4
B1
EDP RxD
3
GND
2
EDP TxD
1
GND 7
RS485-B
6
RS485-A 5
GND
4
+5V
3
+I
2
–I
1
J12
U23
P2
F1
BROWN WIRE
TO LINE FILTER
2.3.1

Load Cells

To attach cable from a load cell or junction box,
remove connector J1 from the board. The connector
plugs into a header on the board (see Figure 2-1).
Wire the load cell cable from the load cell or junction
box to connector J1 as shown in Table 2-1. If using
6-wire load cell cable (with sense wires), remove
jumpers JP1 and JP2 before reinstalling connector J1
(see Figure 2-1). For 4-wire installation, leave
jumpers JP1 and JP2 on.
When connections are complete, reinstall connector
J1 on the board and use two cable ties to secure the
load cell cable to the inside of the enclosure.
J1
4 5 6 7
J15
4
3
JP3
LOCATION OF INSTALLED ANALOG OUTPUT MODULE
J1
2
1
U17
SW1
C100
D4
D9
C104
F2
BLUE WIRE
Figure 2-1. IQ plus 710 CPU and Power Supply Board, Version 2
A/D Converter
J10
1
J6 J5
KEYPAD CONNECTOR
C95
+ C96
U18
D5
D6
JP4
T1
J1 Pin
1
2
3
4
5
6
7
For 6-wire load cell connections,
remove jumpers JP1 and JP2.
Table 2-1. J1 Pin Assignments
10
U16
EPROM
U19
50 26
51 25
U22
75 1
76
100
DIGITAL OUTPUT
J8
Function
+SIG
–SIG
+SENSE
–SENSE
SHIELD
+EXC
–EXC
Installation
J7
GND
1
DI1
2
DI2
3
DI3
4
DI4
5
DI5
6
DI6
7
DI7
8
DI8
9
GND
5