Omron E5EC User Manual

7
Precautions for Safe Use
E5@C Digital Temperature Controllers User’s Manual (H174)
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.
• The product is designed for indoor use only. Do not use or store the product outdoors or 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.
• 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.
• To allow heat to escape, do not block the area around the Digital Controller. Do not block the
ventilation holes on the Digital Controller.
• Be sure to wire properly with the correct signal name and polarity of terminals.
• 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
*1 Use Ferrules with UL certification (R/C).
Connect only one wire to each terminal.
Use the specified size of crimped terminals to wire the E5CC, E5EC, E5AC, E5DC, and E5GC
(models with screw terminal blocks) as well as the E5CC-U (plug-in models).
Model Recommended wires Stripping length
E5CC, E5EC, E5AC, E5DC, or E5GC
(models with screw terminal blocks)
AWG24 to AWG18 (0.21 to 0.82 mm
2
)
Copper stranded or solid wires
6 to 8 mm
E5GC (models with screwless clamp
terminal blocks)
8 to 12 mm
E5CC-U (plug-in models)
AWG24 to AWG14 (0.21 to 2.08 mm
2
)
Copper stranded or solid wires
5 to 6 mm
E5@C-B (models with Push-In Plus
terminal blocks) *1
0.25 to 1.5 mm
2
(equivalent to AWG24 to
AWG16)
Copper stranded or solid wires
With ferrules: 10 mm
Without ferrules: 8 mm

Omron E5EC Specifications

General

Brand	Omron
Model	E5EC
Category	Temperature Controller
Language	English