Omron E5 C Series Manual page 123

Precautions for Safe Use
Be sure to observe the following precautions to prevent malfunction
or adverse affects on the performance or functionality of the product.
Not doing so may occasionally result in faulty operation. Do not
handle the Digital Temperature Controller in ways that exceed the
ratings.
1. This product is specifically designed for indoor use only.
Do not use this product in 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 product within the rated ambient temperature
and humidity.
Gang-mounting two or more Digital Temperature Controllers, or
mounting Digital Temperature Controllers above each other may
cause heat to build up inside the Digital 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 Digital
Temperature Controller.
Do not block the ventilation holes on the Digital Temperature
Controller.
4. Be sure to wire properly with correct signal name and polarity of
terminals.
5. Use copper stranded or solid wires to connect bare wires.
Recommended Wire
Model Wire Size
E5CC/E5EC/
E5AC/E5DC/
E5@C-T/E5GC
(Controllers with
Screw Terminal
AWG24 to AWG18
Blocks)
(0.21 to 0.82mm
E5GC
(Controllers with
Screwless Clamp
Terminal Blocks)
E5CC-U AWG24 to 14
(Plug-in model) (0.21 to 2.08mm
E5@C-B
0.25 to 1.5mm
(Controllers with
Equivalent to
Push-In Plus
AWG24 to 16
Terminal Blocks)
*1. Please use Ferrules with UL certification (R/C).
Use the specified size of crimped terminals to wire the E5CC,
E5EC, E5AC, E5DC, and E5GC (models with screw terminal
blocks) and the E5@C-T and E5CC-U (plug-in models).
Recommended Crimped Terminal Size
Model
E5CC/E5EC/E5AC/E5DC/E5@C-T/
E5GC (Controllers with Screw
Terminal Blocks)
E5CC-U (Plug-in model)
For the E5@C-B(Push-In Plus model), connect only one wire to
each terminal.
For other models, up to two wires of same size and type, or two
crimp terminals, can be inserted into a single terminal.
When connecting two wires to one terminal on an E5GC Digital
Temperature Controller with a screwless clamp terminal blocks,
use two crimped ferrules with a diameter of 0.8 to 1.4 mm and an
exposed conductor length of 8 to 12 mm. *2
*2. The E5GC Digital Temperature Controller with screwless
clamp terminal blocks underwent UL testing with one braided
wire connected.
Wire Stripping length
6 to 8 mm
2 )
8 to 12 mm
5 to 6 mm
2 )
2
*1
Ferrules used: 10 mm
Ferrules not used: 8 mm
Wire Size
M3, Width: 5.8 mm max.
M3.5, Width: 7.2 mm max.
6. Do not wire the terminals that are not used.
7. Use a commercial power supply for the power supply voltage input
to a Digital Temperature Controller with AC input specifications.
Do not use the output from an inverter as the power supply.
Depending on the output characteristics of the inverter,
temperature increases in the Digital Temperature Controller may
cause smoke or fire damage even if the inverter has a specified
output frequency of 50/60 Hz.
8. To avoid inductive noise, keep the wiring for the product's terminal
block away from power cables carry high voltages or large
currents. Also, do not wire power lines together with or parallel to
product 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 product.
Allow as much space as possible between the product and
devices that generate powerful high frequencies (high-frequency
welders, high-frequency sewing machines, etc.) or surge.
9. Use this product within the rated load and power supply.
10.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.
11.Make sure that the Digital Temperature Controller has 30 minutes
or more to warm up after turning ON the power before starting
actual control operations to ensure the correct temperature
display.
12.When executing self-tuning with E5@C, turn ON power to the load
(e.g., heater) at the same time as or before supplying power to the
product. If power is turned ON to the product before turning ON
power to the load, self-tuning will not be performed properly and
optimum control will not be achieved.
13.A switch or circuit breaker must be provided close to the product.
The switch or circuit breaker must be within easy reach of the
operator, and must be marked as a disconnecting means for this
unit.
14.Use a soft and dry cloth to clean the product carefully. Do not use
organic solvent, such as paint thinner, benzine or alcohol to clean
the product.
15.Design the system (e.g., control panel) considering the 2 seconds
of delay that the product's output to be set after power ON.
16.The output may turn OFF when you move to the initial setting level.
Take this into consideration when performing control operations.
17.The number of non-volatile memory write operations is limited.
Therefore, use RAM write mode when frequently overwriting data
during communications or other operations.
18.Always touch a grounded piece of metal before touching the
Digital Temperature Controller to discharge static electricity from
your body.
19.Use suitable tools when taking the Digital Temperature Controller
apart for disposal. Sharp parts inside the Digital Temperature
Controller may cause injury.
20.For compliance with Lloyd's standards, the E5CC, E5CC-B,
E5EC-B, E5CC-U, E5EC, E5AC, and E5DC must be installed
under the conditions that are specified in Shipping Standards.
21.For the Digital Temperature Controller with two Setup Tool ports
(E5EC/E5EC-B/E5AC/E5DC/E5DC-B/E5GC), do not connect
cables to both ports at the same time. The Digital Temperature
Controller may be damaged or may malfunction.
22.Do not place heavy object on the Conversion Cable, bend the
cable past its natural bending radius, or pull on the cable with
undue force. The Digital Temperature Controller may be
damaged.
E5@C/E5@C-T
123