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Precautions for Safe Use
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 unex-
pected events. Use the product within specifications.
( 1 ) This product is designed for indoor use only. Do not use or store the Digital Temperature Control-
ler in any of the following places.
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 Controller within the rated ambient temperature and humidity.
Gang-mounting two or more Digital Controllers, or mounting Digital Controllers above each other
may cause heat to build up inside the Digital 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
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 the correct signal name and polarity of terminals.
( 5 ) To connect bare wires, use copper stranded or solid wires.
Use the wire sizes and stripping lengths given in the following table to prevent smoking and firing
of the wiring material.
Recommended Wires
E5CD or E5ED
E5@D-B
(Push-In Plus terminal blocks)
Use the specified size of crimped terminals to wire the E5CD or E5ED.
Crimp Terminal Sizes
Model
E5CD or E5ED
For the E5@D-B (models with Push-In Plus terminal blocks), connect only one wire to each terminal.
For the E5CD or E5ED (models with screw terminals), you can connect up to two wires of the same
size and type, or two crimped terminals, to a single terminal.
( 6 ) Do not wire the terminals that are not used.
( 7 ) To avoid inductive noise, keep the wiring for the Digital Controller's terminal block away from
power cables that carry high voltages or large currents. Also, do not wire power lines together with
or parallel to Digital Controller wiring. Using shielded cables and using separate conduits or ducts
are 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 com-
ponent).
E5@D Digital Temperature Controllers Communications Manual (H225)
Model
AWG24 to AWG18
(0.205 to 0.823 mm
0.25 to 1.5 mm
(equivalent to AWG24 to AWG16)
M3, Width: 5.8 mm max.
Precautions for Safe Use
Recommended wires
2
)
2
Crimp terminal size
Stripping length
6 to 8 mm
Without ferrules: 8 mm
7
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