E5EN-R3ML-500-N datasheet(19/22 Pages) OMRON

19 / 22 page

Basic-type Digital Temperature Controller

E5AN/E5EN

11.When executing self-tuning, 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.

12.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.

13.Always turn OFF the power supply before pulling out the interior of

the product, and never touch nor apply shock to the terminals or

electronic components. When inserting the interior of the product,

do not allow the electronic components to touch the case.

14.Do not use paint thinner or similar chemical to clean with. Use

standard grade alcohol.

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 shifting to certain levels. Take this

into consideration when performing control.

17.The number of EEPROM 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

Temperature Controller to discharge static electricity from your

body.

19.Do not remove the terminal block. Doing so may result in failure or

malfunction.

20.Control outputs (for driving SSR) that are voltage outputs are not

isolated from the internal circuits. When using a grounded

thermocouple, do not connect any of the control output terminals

to ground. (Doing so may result in an unwanted circuit path,

causing error in the measured temperature.)

21.When replacing the body of the Temperature Controller, check the

condition of the terminals. If corroded terminals are used, contact

failure in the terminals may cause the temperature inside the

Temperature Controller to increase, possibly resulting in fire. If the

terminals are corroded, replace the case as well.

22.Use suitable tools when taking the Temperature Controller apart

for disposal. Sharp parts inside the Temperature Controller may

cause injury.

23.Before connecting an Output Unit, confirm the specifications and

thoroughly read relevant information in the datasheet and manual

for the Temperature Controller.

24.Check the orientation of the connectors on the Conversion Cable

before connecting the Conversion Cable. Do not force a

connector if it does not connect smoothly. Using excessive force

may damage the connector.

25.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.

26.Do not connect or disconnect the Conversion Cable while

communications are in progress. Product faults or malfunction

may occur.

27.Make sure that the Conversion Cable's metal components are not

touching the external power terminals.

28.Do not touch the connectors on the Conversion Cable with wet

hands. Electrical shock may result.

29.Before using infrared communications, correctly attach the

enclosed Mounting Adapter to the cable for the Support Software.

When connecting the infrared port on the cable to the Support

Software into the Adapter, insert the connector to the specified

line. Communications may not be possible if the connector is not

connected properly.

Precautions for Correct Use

Service Life

1. Use the product within the following temperature and humidity

ranges:

Temperature:

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

Humidity: 25% to 85%

If the product is installed inside a control board, the ambient

temperature must be kept to under 55

°C, including the temperature

around the product.

2. The service life of electronic devices like 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

Temperature Controller.

3. When two or more 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

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 Temperature Controllers. When providing forced

cooling, however, be careful not to cool down the terminals

sections alone to avoid measurement errors.

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 product so that it is horizontally level.

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

been set correctly.

Waterproofing

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

(E5CN-U: Front panel: IP50, rear case: IP20, terminals: IP00)

Operating Precautions

1. It takes approximately two seconds for the outputs to turn ON from

after the power supply is turned ON. Due consideration must be

given to this time when incorporating Temperature Controllers in a

sequence circuit.

2. When using self-tuning, turn ON power for the load (e.g., heater)

at the same time as or before supplying power to the Temperature

Controller. If power is turned ON for the Temperature Controller

before turning ON power for the load, self-tuning will not be

performed properly and optimum control will not be achieved.

3. When starting operation after the Temperature Controller has

warmed up, turn OFF the power and then turn it ON again at the

same time as turning ON power for the load. (Instead of turning

the Temperature Controller OFF and ON again, switching from

STOP mode to RUN mode can also be used.)

4. Avoid using the Controller in places near a radio, television set, or

wireless installing. These devices can cause radio disturbances

which adversely affect the performance of the Controller.

Others

1. The disk that is included with the Conversion Cable is designed for

a computer CD-ROM driver. Never attempt to play the disk in a

general-purpose audio player.

2. Do not connect or disconnect the Conversion Cable connector

repeatedly over a short period of time. The computer may

malfunction.

3. After connecting the Conversion Cable to the computer, check the

COM port number before starting communications. The computer

requires time to recognize the cable connection. This delay does

not indicate failure.

4. Do not connect the Conversion Cable through a USB hub. Doing

so may damage the Conversion Cable.

5. Do not use an extension cable to extend the Conversion Cable

length when connecting to the computer. Doing so may damage

the Conversion Cable.

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