4
Installation
Wiring
Unit Disposal
General Safety Precautions
Be sure all cable connectors are securely attached to the ST unit. A loose connection may cause incorrect
input or output signals.
Be sure to ground the ST unit’s FG wire separately from other equipment FG lines. Also, be sure to use a
grounding resistance of 100 or less and a 2mm
2
or thicker wire, or your country’s applicable standard.
Otherwise, electric shock or malfunctions may result.
Be sure to use only the designated torque to tighten the ST unit’s terminal block screws. If these screws
are not tightened firmly, it may cause a short-circuit, fire or incorrect unit operation.
Be sure that metal particles and wiring debris do not fall inside the ST unit. They can cause a fire,
malfunction or incorrect unit operation.
When the product is disposed of, it should be done so according to your country’s regulations for similar
types of industrial waste.
Do not press on the ST unit’s display with excessive force or with a hard object, since it can damage the
display. Also, do not press on the touch panel with a pointed object, such as the tip of a mechanical pencil
or a screwdriver, since doing so can damage the touch panel.
Do not install the ST where the ambient temperature exceeds the specified range. Doing so may cause a
unit malfunction.
To prevent abnormally high temperatures from occurring inside the ST, do not restrict or block the ST unit’s
rear-face ventilation slots.
Do not operate the ST in areas where large, sudden temperature changes can occur. These changes can
cause condensation to form inside the ST, possibly causing it to malfunction.
Do not allow water, liquids or metal fragments to enter inside the ST unit’s case, since they can cause
either a malfunction or an electric shock. The allowable pollution degree is 2.
Do not operate or store the ST in locations where it can be exposed to direct sunlight, high temperatures,
excessive dust, moisture or vibration.
Do not operate or store the ST where chemicals evaporate, or where chemicals are present in the air.
Corrosive chemicals: Acids, alkalines, liquids containing salt
Flammable chemicals: Organic Solvents
