4
STEPS
:
1. Connect the “HMI” end of the communication cable into either the RS-232/RS422 port or the RS-485
port as required for your application (HMI housing is marked).
2. Tighten the two cable screws at each end to ensure shield ground path.
3. Route the communication cable to the PLC. Refer to the “OIT Cable Routing” section for more
information.
4. Connect the “PLC” end of the cable to the PLC and tighten the cable screws.
5. Connect the green shield wire from the cable to earth ground (
0
) on the PLC. If this wire is not
present, make the ground connection inside the PLC connector.
Panel Preparation
A metal panel or mounting surface with a minimum thickness of 15 gauge (0.059 inch/3.3mm) if cold-rolled steel or
hardened steel, or 10 gauge (0.101 inch/2.6mm) if aluminum alloy (6061-T6 preferred) is required. Thinner panels or
surfaces may bow between the mounting clamps and not form a seal with the gasket.
The area of the panel or mounting surface where the gasket comes into contact must be flat and free of scratches, pits, and
other features that prevent the gasket from sealing properly. If the panel or mounting surface is not uniform, thick, flat, stiff,
or smooth enough, then a sealant such as silicone may be required.
*
Clean and deburr the panel cutout before the OIT is installed.
1010-0300, Rev 02
Installation of OITs
13
+24V
0V
+ -
BATTERY
EXTENSION
PORT
RS
-485
OIT
Power
Supply
Port 1
Port 2
Control panel
Power & 485 Comm. connector
5-Pin Phoenix removable terminal
block connector, 0. 20” [5.08mm] ctrs.
Shielded power cable
2-Wire RS485
Communication cable specific for
the PLC/Host; twisted pair, foil
shielded, 28AWG minimum
Attach earth ground wire
(if included on cable)
Output
PLC[RS-232]/[RS-422]
PC[RS-232]
PLC[RS-485]
PLC/
Host
Earth
GND
Tighten all screws
FG
Port 1, PC[RS-232]/PLC[RS232]/PLC[RS422],
has a shielded male DB9P connector
WARNING
The OIT requires a stiff, flat, smooth mounting surface
free of blemishes to seal properly to NEMA 4.
