E5CZ-R2MTD datasheet(59/64 Pages) OMRON

59 / 64 page

E5EZ-PRR

Safety Precautions

!CAUTION

Note: 1. A 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.

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

unexpected events.

1. The product is designed for indoor use only. Do not use the

product outdoors or 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 product within the rated temperature and

humidity ranges.

Group-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. Use the specified size (M3.5, width of 7.2 mm or less) crimped

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

use copper braided or solid 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.

5. Be sure to wire properly with correct polarity of terminals. Do not

wire any of the I/O terminals incorrectly.

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

7. The voltage output (control output) is not electrically isolated from

the internal circuits. When using a grounded temperature sensor,

do not connect any of the control output terminals to ground.

Otherwise unwanted current paths will cause measurement

errors.

8. To avoid inductive noise, keep the wiring for the Temperature

Controller's terminal block away from power cables carrying high

voltages or large currents. Also, do not wire power lines together

with or parallel to 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 Temperature

Controller and devices that generate powerful high frequencies

(high-frequency welders, high-frequency sewing machines, etc.)

or surge.

9. To reduce the risk of fire or electric shock, install the Temperature

Controller in a controlled environment relatively free of

contaminants.

10.The outputs may turn OFF when shifting to certain levels. Take

this into consideration when performing control.

11.When turning OFF the power, use a switch or relay to ensure the

voltage decreases immediately. Incorrect operation and data

storage errors may occur if the voltage decreases slowly.

12.Make sure that any Option Units are installed correctly. Do not

remove the internal PCB when installing an Option Unit.

13.When inserting the Temperature Controller into the case, do not

force it into the case. Doing so will damage internal parts.

14.The EEPROM has a limited write life. When overwriting data

frequently, e.g., via communications, use RAM Mode.

15.Use the product within the rated load and power supply.

16.Use a switch, relay, or other contact so that the power supply

voltage reaches the rated voltage within 2 seconds. If the applied

voltage is increased gradually, the power supply may not be reset

or malfunctions may occur.

Do not touch the terminals while power is being supplied.

Doing so may occasionally result in minor injury due to

electric shock.

Operate the Temperature Controller properly. Improper

operation may cause minor or moderate injury or property

damage.

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.

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. (See note 1.)

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

not interconnect the outputs of different Class

2 circuits. (See note 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.

Loose screws may occasionally result in fire.

Tighten terminal screws to the specified torque of 0.74 to

0.90 N·m.

Unexpected operation may result in equipment damage

or accidents if the settings are not appropriate for the

controlled system. Set the Temperature Controller as

follows:

A malfunction in the Temperature Controller may

occasionally make control operations impossible or

prevent alarm outputs, resulting in property damage.

To maintain safety in the event of malfunction of the

Temperature Controller, take appropriate safety

measures, such as installing a monitoring device on a

separate line.

Be sure that the platinum resistance thermometer type

and the input type set on the Temperature Controller are

the same.

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