E5CD-RX2ABM-001 datasheet(45/56 Pages) OMRON

45 / 56 page

E5CD/E5ED

26.Do not place heavy objects on top of the USB-Serial Conversion

Cable, bend the Cable beyond its natural bending limit, or pull on

the Cable. Doing so may result in failure.

27.Make sure that the indicators on the USB-Serial Conversion Cable

are operating properly. Depending on the application conditions,

deterioration in the connectors and cable may be accelerated, and

normal communications may become impossible. Perform

periodic inspection and replacement.

28.Do not disconnect the USB-Serial Conversion Cable while

communications are in progress. The Digital Temperature

Controller may be damaged or may malfunction.

29.Connectors may be damaged if they are inserted with excessive

force. When connecting a connector, always make sure that it is

oriented correctly. Do not force the connector if it does not connect

smoothly.

30.Do not touch the external power supply terminals or other metal

parts of the cables on the Digital Temperature Controller.

31.Noise may enter on the USB-Serial Conversion Cable, possibly

causing equipment malfunctions. Do not leave the USB-Serial

Conversion Cable connected constantly to the equipment.

32.With the E5ED/E5ED-B, do not connect cables to both the front-

panel Setup Tool port and the top-panel Setup Tool port at the

same time. The Digital Temperature Controller may be damaged

or may malfunction.

33.Observe the following precautions when you wire the E5

@D-B.

• Always follow the E5D-B (Models with Push-In Plus Terminal

Blocks)

in E5D Digital Temperature Controllers User's Manual

(Cat. No. H224).

• Do not wire anything to the release holes.

• Do not tilt or twist a flat-blade screwdriver while it is inserted into

a release hole on the terminal block. The terminal block may be

damaged.

• Insert a flat-blade screwdriver into the release holes at an angle.

The terminal block may be damaged if you insert the screwdriver

straight in.

• Do not allow the flat-blade screwdriver to fall out while it is

inserted into a release hole.

• Do not bend a wire past its natural bending radius or pull on it

with excessive force. Doing so may cause the wire to break.

• Do not use crossover wiring except for the input power supply

and communications.

Service Life

1. Use the Digital Temperature Controller within the following

temperature and humidity ranges:

Temperature:

−10 to 55°C (with no icing or condensation),

Humidity: 25% to 85%

If the Digital Temperature Controller is installed inside a control

board, the ambient temperature must be kept to under 55°C,

including the temperature around the Digital Temperature

Controller.

2. The service life of electronic devices like Digital Temperature

Controllers is determined not only by the number of times the relay

is switched but also by the service life of internal electronic

components. Component service life is affected by the ambient

temperature: the higher the temperature, the shorter the service

life and, the lower the temperature, the longer the service life.

Therefore, the service life can be extended by lowering the

temperature of the Digital Temperature Controller.

3. When two or more Digital Temperature Controllers are mounted

horizontally close to each other or vertically next to one another,

the internal temperature will increase due to heat radiated by the

Digital Temperature Controllers and the service life will decrease.

In such a case, use forced cooling by fans or other means of air

ventilation to cool down the Digital Temperature Controllers. When

providing forced cooling, however, be careful not to cool down the

terminals sections alone to avoid measurement errors.

Ensuring Measurement Accuracy

1. When extending or connecting the thermocouple lead wire, be

sure to use compensating wires that match the thermocouple

types.

2. When extending or connecting the lead wire of the platinum

resistance thermometer, be sure to use wires that have low

resistance and keep the resistance of the three lead wires the

same.

3. Mount the Digital Temperature Controller so that it is horizontally

level.

4. If the measurement accuracy is low, check to see if input shift has

been set correctly.

Resistance to Water

The degree of protection is as shown below. Sections without any

specification on their degree of protection or those with IP0 are not

waterproof.

Front panel: IP66

Rear case: IP20, Terminal section: IP00

When waterproofing is required, insert the Waterproof Packing on the

backside of the front panel.

Keep the Port Cover on the front-panel Setup Tool port of the E5ED/

E5ED-B securely closed. The degree of protection when the

Waterproof Packing is used is IP66. To maintain an IP66 degree of

protection, the Waterproof Packing and the Port Cover for the front-

panel Setup Tool port must be periodically replaced because they

may deteriorate, shrink, or harden depending on the operating

environment.

The replacement period will vary with the operating environment.

Check the required period in the actual application. Use 3 years or

sooner as a guideline. If the Waterproof Packing and Port Cover are

not periodically replaced, waterproof performance may not be

maintained.

If a waterproof structure is not required, then the Waterproof Packing

does not need to be installed.

Precautions for Correct Use

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