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Be sure to observe the following precautions to prevent operation failure, malfunction, or adverse affects on
the performance and functions of the product. Not doing so may occasionally result in unexpected events. Use
the product within the specifications.
1) The product is designed for indoor use only. Do not use the product outdoors or in any of the following
locations. Do not use or store the product in any of the following locations.
• Places directly subject to heat radiated from heating equipment.
• Places subject to splashing liquid or oil atmosphere.
• Places subject to direct sunlight.
• Places subject to dust or corrosive gas (in particular, sulfide gas and ammonia gas).
• Places subject to intense temperature change.
• Places subject to icing and condensation.
• Places subject to vibration and large shocks.
2) Use and store the Digital Temperature Controller within the rated ambient temperature and humidity.
Gang-mounting two or more temperature controllers, or mounting temperature controllers above each
other may cause heat to build up inside the temperature controllers, which will shorten their service life. In
such a case, use forced cooling by fans or other means of air ventilation to cool down the Digital
Temperature Controllers.
3) To allow heat to escape, do not block the area around the product. Do not block the ventilation holes on
the product.
4) Be sure to wire properly with correct polarity of terminals.
5) Use the specified size of crimp terminals for the E5CN, E5AN, or E5EN (M3.5, width of 7.2 mm or less).
For open-wired connections to the E5CN, E5AN, or E5EN, use stranded or solid copper wires with a
gauge of AWG24 to AWG14 (equal to a cross-sectional area of 0.205 to 2.081 mm
2
). (The stripping
length is 5 to 6 mm.) Up to two wires of the same size and type or two crimp terminals can be connected
to one terminal. Do not connect more than two wires or more than two crimp terminals to the same
terminal.
Use the specified size of crimp terminals for the E5GN (M3.0, width of 5.8 mm or less). For open-wired
connections to the E5GN, use stranded or solid copper wires with a gauge of AWG24 to AWG18 (equal to
a cross-sectional area of 0.205 to 0.8231 mm
2
). (The stripping length for screw terminals is 6 to 8 mm.
The stripping length for screwless clamp terminals is 10 mm. The stripping length for auxiliary output 2 is
6 mm.) Up to two wires of the same size and type or two crimp terminals can be connected to one
terminal. Do not connect more than two wires or more than two crimp terminals to the same terminal.
Ferrules for screwless clamp terminals must be 0.8 to 1.4 mm in diameter and the exposed conductor
must be 8 to 12 mm in length. Ferrules for auxiliary output 2 must be 0.8 to 1.4 mm in diameter and the
exposed conductor must be 6 mm in length.
6) Do not wire the terminals which are not used.
7) To avoid inductive noise, keep the wiring for the Digital Temperature Controller's terminal block away from
power cables carry high voltages or large currents. Also, do not wire power lines together with or parallel
to Digital Temperature Controller wiring. Using shielded cables and using separate conduits or ducts is
recommended.
Attach a surge suppressor or noise filter to peripheral devices that generate noise (in particular, motors,
transformers, solenoids, magnetic coils or other equipment that have an inductance component).
When a noise filter is used at the power supply, first check the voltage or current, and attach the noise
filter as close as possible to the temperature controller.
Allow as much space as possible between the Digital Temperature Controller and devices that generate
powerful high frequencies (high-frequency welders, high-frequency sewing machines, etc.) or surge.
8) Use this product within the rated load and power supply.
9) Make sure that the rated voltage is attained within two seconds of turning ON the power using a switch or
relay contact. If the voltage is applied gradually, the power may not be reset or output malfunctions may
occur.
Precautions for Safe Use