Rice Lake 320IS Plus Intrinsically Safe Digital Weight Indicator - I/O Module for Intrinsically Safe Systems Installation Manual - Manual (Page 6)

2 I/O Module Installation Manual
2.0 Installation
This section describes procedures for connecting the
analog and digital I/Os, fiber optic and serial
communication cables to the
I/O Module .
• Use a wrist strap to ground yourself and protect
components from electrostatic discharge (ESD)
when working inside the indicator enclosure.
• It is mandatory to return the I/O Module to Rice
Lake Weighing Systems for circuit board level
service. Component level repair is not permitted on
UL-approved equipment by anyone other than the
manufacturer.
2.1 Unpacking and Assembly
Immediately after unpacking, visually inspect the I/O
Module to ensure all components are included and
undamaged. The shipping carton should contain the
I/O Module , this manual, and a parts kit. If any parts
w ere d am a ge d i n s hip m e nt, n ot ify R ic e L ak e
Weighing Systems and the shipper immediately.
2.2 Enclosure Disassembly
The I/O Module enclosure must be opened to connect
cables for load cells, communications, and power.
The I/O Module has no on/off switch.
Before opening the unit, ensure the
power cord is disconnected.
2.3 Installation of the I/O Module
The following section describes the wiring of various
ports of the
I/O Module . Table 2-1 below lists the
connectors of the main board of the I/O Module . See
Figure 2-1 for port locations.
Figure 2-1. I/O Module Board
Caution
Connector Description
CN1 Analog Outputs
CN2 EDP Port
CN3 Printer Port
CN4 Digital Inputs
CN5 Relay Outputs
CN8 DC Power
Optical Input Light Port
Optical Output Light Port
Table 2-1. I/O Module Wiring Ports
Warning
R 3 4
R22
Q1
C27
R65
Q3
R 35
R31
R55
R6
R39
Q5
TVS3
C10 C11
R14
R12
R15
D11
R42
R43 R45
R8
OP4
Q8
R48
C14
TVS4
R17
R21
D8
R32
CN
6
D5
Q9
R26
R47
R20
R19
R51
R18
R53
C25
R37
Q4 D6
Q2
C18
R57
R58
R62
R63
R25
C26
R10 R11
C15
C28 C29
C36
C6
C7
C1
R1
R3
U12
C21
C24
R23
D7
R 3 6
U9
R56
IF-D91
PD1
C16
C17 C19
D4
R2
8
C44
U15
R59
R60
R61
R54
CN7
C35
C9
C8
R5
R7
R1
3
LD1 LD2
Q6 D9 D10
R38 R40
R41
U3
S
W1
R9
OP2 OP
3
LD4
Q7 D12
R44
R46
TVS6
TV
S 2
U5
C12 C1
3 + C47
R64
D1
Z1
U17
C34 C41
C40
D17
R4
D14 D15
R50 R52
R16
C5
CN8
MH1
OP
6
C43
U14
J5
U10
R33
J4
IF-E96
LD5
U7
GD1 C30
C31
U6
U2
K2 K1
OP7
K4
TV
S
5
OP1
OP8 OP9
R4
9
C4
C3
C20
R29
C23
R30
C32
+
C46
C2
CN2
TVS1
U8
C22
D3
U13
B1
LD3
C33
U16
Y1
GD2
U4
S
W2
U1
D2
T1
C45
F1
U18
R2
CN4
D13 D16
U11
OP5
U19
1
J1
R27
K3
OP10
T1A
CN1
CN
3
CN5
2 1 2 1
SO16
1A 2B
1
1 2 N
O
1 2
4A
3 4 5
3 4 5
6
6
HI HI LO LO
N
O
1 2
1 2
HI
3 4 5
3 4 5
+5V
6
6
1
DGND
3 2 4
Tx
5 6
Rx
7
TD(A)
1
DGND
2 3 4
Tx
5 6
Rx
7
TD(A)
8
C
H 1 V+ I+ Gnd- 2
1
20mA
1
LIGHT PORT
RS-232/485
SOW16
1B 2A 3A 3B 4B LO HI LO
AGND
PWR
GND
DGND
IGND Rx
8
Tx
RD(B) TD(B)
1 2
20mA
Rx RD(A) RD(B) TD(B)
Tx
1
V+ I+ Gnd-
ON
1
C
H
ON
RS-232/485
OPTICAL OUTPUT
DGND
DIGITAL OUTPUTS - RELAY CONTACTS DIGITAL INPUTS +5 VOLTS
RD(A) IGND
OPTICAL INPUT
RICE LAKE WEIGHING SYSTEMS
U20