1: GENERAL INFORMATION
USER’S MANUAL 1-25
Installation
This section describes the methods and precautions for installing the MICRO
3
.
Installation Location
The MICRO
3
programmable controller should be installed correctly for optimum performance.
Mount the MICRO
3
base unit on a vertical plane; not on a horizontal plane. When mounting the MICRO
3
base unit verti-
cally, place the pop-up lid down to prevent heat build-up.
Make sure that the operating temperature does not drop below 0°C or exceed 60°C. If the temperature does exceed 60°C,
use a fan or cooler.
To eliminate excessive temperature build-up, provide ample ventilation. Do not install MICRO
3
near, and especially above,
any device which generates considerable heat, such as a heater, transformer, or large capacity resistor. The relative humid-
ity should be above 45% and below 85%.
MICRO
3
should not be exposed to excessive dust, dirt, salt, direct sunlight, vibrations, or shocks. Do not use MICRO
3
in an
area where corrosive chemicals or flammable gases are present. The unit should not be exposed to chemical, oil, or water
splashes.
Installation Methods
MICRO
3
can be installed in two ways; direct mounting on a panel surface and mounting on a DIN rail.
Direct Mounting
The MICRO
3
base unit can be mounted on a panel surface.
Drill mounting holes as shown on page 1-24. Use M4 screws (6 or 8 mm long) to mount the
MICRO
3
base unit. Spring
washers can be used with the screws.
Warning
• Turn power off to the MICRO
3
before starting installation, removal, wiring, maintenance, and
inspection on the MICRO
3
. Failure to turn power off may cause electrical shocks or fire hazard.
• Emergency and interlocking circuits must be configured outside the MICRO
3
. If such a circuit is
configured inside the MICRO
3
, failure of the MICRO
3
may cause disorder of the control system,
damage, or accidents.
• Special expertise is required to install, wire, program, and operate the MICRO
3
. People without
such expertise must not use the MICRO
3
.
Caution
• Prevent metal fragments and pieces of wire from dropping inside the MICRO
3
housing. Put a cover
on the MICRO
3
during installation and wiring. Ingress of such fragments and chips may cause fire
hazard, damage, or malfunction.
• MICRO
3
is designed for installation in equipment. Do not install the MICRO
3
outside of equipment.
• The pollution degree of the MICRO
3
is “Pollution degree 2.” Use the MICRO
3
in environments of
pollution degree 2 (according to IEC664-1).
Correct Incorrect IncorrectCorrect
Pop-up Lid
Pop-up Lid
Caution
• Install the MICRO
3
according to instructions described in this user’s manual and the MICRO
3
user’s
manual. Improper installation will result in falling, failure, or malfunction of the MICRO
3
.