3. OIT Installation
It is necessary to follow all installation procedures described in this chapter for
electrical noise immunity and CE compliance.
Your Maple Systems OIT is designed to connect easily to your PLC. External
connectors provide quick connection for power and communications wiring.
• There is one serial port with an RJ-45 shielded jack. This port is used to connect
to the PLC and to configure the OIT.
• A separate three-position terminal block is supplied to provide power to the
OIT.
3.1. Prepare Panel for OIT Mounting
The OIT3160 and OIT4160 are mounted to a control panel from the front. For a
proper NEMA 4/12 seal, you will need:
• A panel with a maximum thickness of 0.125 inches (3.2 mm).
• A panel with a minimum thickness of 16-gauge (0.059 inches; 1.5 mm) steel or
10-gauge (0.102 inches; 2.6 mm) aluminum. Thinner panels may bow between
the mounting studs, requiring the use of a stiffener on the rear.
• The surface of the panel, where the panel comes into contact with the gasket,
must be free of scratches, pits, and other features that prevent the gasket from
sealing properly.
The diagram in Appendix D shows the dimensions of the panel cutout required for
proper installation. This panel cutout illustration is shown actual size and can be
photocopied to be used as a template. Check photocopy accuracy with the printed
check dimension. The panel cutout should be cleaned and deburred before the OIT
is installed.
3.2. Enclosures
Allow enough spacing within an enclosure for adequate ventilation. For some
applications, you may have to consider heat produced by other devices within a
panel. The ambient temperature around the terminal must be maintained as
specified.
10
OIT3160B/4160B
1010-0105, REV 03
3.3. Mount OIT to Panel
STEPS
1. Gently position the OIT with the studs through the panel mounting holes.
2. Secure the OIT by installing the four #6-32UNC mounting nuts using a
5/16 inch socket wrench or nut driver.
CAUTION:
Do not torque the 4 mounting nuts to over 15 pound-inches. Over
torquing can strip the threads or pull the studs loose.
RE-INSTALLING:
Because the gasket will take a “set” to the panel, be sure to
re-install any OIT to the same panel cutout when a NEMA 4/12 seal is required.
1010-0105, REV 03
INSTALLATION MANUAL
11
Figure 3 OIT3160/4160 Panel Mounting
