E5EN-R3ML-500-N datasheet(18/22 Pages) OMRON

18 / 22 page

Basic-type Digital Temperature Controller

E5AN/E5EN

Safety Precautions

!CAUTION

✽1. An SELV circuit is one separated from the power supply with

double insulation or reinforced insulation, that does not exceed

30 V r.m.s. and 42.4 V peak or 60 VDC.

✽2. A class 2 power supply is one tested and certified by UL as having

the current and voltage of the secondary output restricted to

specific levels.

✽3. The tightening torque for E5CN-U is 0.5 N·m.

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.

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 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 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 (M3.5, width 7.2 mm or less) crimped

terminals for wiring. To connect bare wires to the terminal block,

use stranded or solid copper wires with a gage of AWG24 to

AWG14 (equal to a cross-sectional area of 0.205 to 2.081 mm2).

(The stripping length is 5 to 6 mm.) Up to two wires of the same

size and type or two crimp terminals can be inserted into a single

terminal.

6. Do not wire the terminals that are not used.

7. 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.

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.

10.Make sure that the 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.

Do not touch the terminals while power is being supplied.

Doing so may occasionally result in minor injury due to

electric shock.

Do not allow pieces of metal, wire clippings, or fine

metallic shavings or filings from installation to enter the

product. Doing so may occasionally result in electric

shock, fire, or malfunction.

Do not use the product where subject to flammable or

explosive gas. Otherwise, minor injury from explosion

may occasionally occur.

Do not leave the cable for the Support Software

connected to the product. Malfunction may occur due to

noise in the cable.

Do not use the Temperature Controller or Conversion

Cable if it is damaged. Doing so may occasionally result

in minor electric shock or fire.

Never disassemble, modify, or repair the product or touch

any of the internal parts. Minor electric shock, fire, or

malfunction may occasionally occur.

CAUTION - Risk of Fire and Electric Shock

a) This product is UL listed as Open Type Process

Control Equipment. It must be mounted in an

enclosure that does not allow fire to escape externally.

b) More than one disconnect switch may be required to

de-energize the equipment before servicing the

product.

c) Signal inputs are SELV, limited energy.

✽1

d) Caution: To reduce the risk of fire or electric shock, do

not interconnect the outputs of different Class 2

circuits.

✽2

If the output relays are used past their life expectancy,

contact fusing or burning may occasionally occur.

Always consider the application conditions and use the

output relays within their rated load and electrical life

expectancy. The life expectancy of output relays varies

considerably with the output load and switching

conditions.

Tighten the terminal screws to between 0.74 and

0.90 N·m.

✽3 Loose screws may occasionally result in

fire.

Set the parameters of the product so that they are

suitable for the system being controlled. If they are not

suitable, unexpected operation may occasionally result in

property damage or accidents.

A malfunction in the product may occasionally make

control operations impossible or prevent alarm outputs,

resulting in property damage. To maintain safety in the

event of malfunction of the product, take appropriate

safety measures, such as installing a monitoring device

on a separate line.

A semiconductor is used in the output section of long-life

relays. If excessive noise or surge is impressed on the

output terminals, a short-circuit failure is likely to occur. If

the output remains shorted, fire will occur due to

overheating of the heater or other cause. Take measures

in the overall system to prevent excessive temperature

increase and to prevent fire from spreading.

Do not allow pieces of metal or wire cuttings to get inside

the cable connector for the Support Software. Failure to

do so may occasionally result in minor electric shock, fire,

or damage to equipment.

Do not allow dust and dirt to collect between the pins in

the connector on the Conversion Cable. Failure to do so

may occasionally result in fire.

When inserting the body of the Temperature Controller

into the case, confirm that the hooks on the top and

bottom are securely engaged with the case. If the body of

the Temperature Controller is not inserted properly, faulty

contact in the terminal section or reduced water

resistance may occasionally result in fire or malfunction.

When connecting the Control Output Unit to the socket,

press it in until there is no gap between the Control Output

Unit and the socket. Otherwise contact faults in the

connector pins may occasionally result in fire or

malfunction.

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