Hitachi HIDIC EH-150 EH-PT4 Instructions for use

HITACHI PROGRAMMABLE CONTROLLER

RESISTANCE TEMPERATURE DETECTIVE

INPUT MODULE(EH-PT4)

APPLICATION MANUAL

NJI-324(X)

WARNING

To ensure that the equipment described by this manual. As well as all equipment connected

to and used with it, operate satisfactorily and safety, all applicable local and national codes

that apply to installing and operating the equipment must be followed. Since codes can vary

geographically and can change with time, it is the user’s responsibility to determine which

standard and codes apply, and to comply with them.

FAILURE TO COMPLY WITH APPLICABLE CODES AND STANDARDS CAN RESULT IN

DAMAGE TO EQUIPMENT AND/OR SERIOUS INJURY TO PERSONNEL.

INSTALL EMARGENCY POWER STOP SWITCH, WHICH OPERATES INDEPENDENTLY OF

THE PROGRAMMABLE CONTROLLER TO PROTECT THE EQUIPMENT AND/OR

PERSONNEL IN CASE OF THE CONTROLLER MALFUNCTION.

Personnel who are to install and operate the equipment should carefully study this manual

and any other referred to by it prior to installation and/or operation of the equipment. Hitachi

Industrial Equipment Systems Co., Ltd. constantly strives to improve its products, and the

equipment and the manual(s) that describe it may be different from those already in your

possession.

If you have any questions regarding the installation and operation of the equipment, or if

more information is desired, contact your local Authorized Distributor or Hitachi Industrial

Equipment Systems Co., Ltd.

IMPORTANT

THIS EQUIPMENT GENERATES, USES, AND CAN RADIATE RADIO FREQUENCY

ENERGY AND, IF NOT INSTALLED AND USED IN ACCORDANCE WITH THE

INSTRUCTION MANUAL, MAY CAUSE INTERFERENCE TO RADIO COMMUNICATIONS.

AS TEMPORARILY PERMITTED BY REGULATION, IT HAS NOT BEEN TESTED FOR

COMPLIANCE WITH THE LIMITS FOR CLASS A COMPUTING DEVICES PURSUANT TO

SUBPART J OF PART 15 OF FCC ROULES, WHICH ARE DESIGNED TO PROVIDE

PEASONABLE PROTECTION AGAINST SUCH INTERFERENCE.

OPERATION OF THIS EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY TO CAUSE

INTERFERENCE IN WHICH CASE THE USER, AT HIS OWN EXPENSE, WILL BE

REQUIRED TO TAKE WHATEVER MEASURES MAY BE REQUIRED TO CORRECT THE

INTERFERENCE.

LIMITED WARRANTY AND IMITATION OF LIABILITY

Hitachi Industrial Equipment Systems Co., Ltd. (Hitachi) warrants to the original purchaser

that the programmable logic controller (PLC) manufactured by Hitachi is free from defects in

material and workmanship under normal use and service. The obligation of Hitachi under this

warranty shall be limited to the repair or exchange of any part or parts which may prove

defective under normal use and service within eighteen (18) months from the date of

manufacture or twelve (12) months from the date of installation by the original purchaser

which ever occurs first, such defect to be disclosed to the satisfaction of Hitachi after

examination by Hitachi of the allegedly defective part or parts. This warranty in expressly in

lieu of all other warranties expressed or implied including the warranties of merchantability

and fitness for use and of all other obligations or liabilities and Hitachi neither assumes, nor

authorizes any other person to assume for Hitachi, any other liability in connection with the

sale of this PLC. This warranty shall not apply to this PLC or any part hereof which has been

subject to accident, negligence, alternation, abuse, or misuse. Hitachi makes no warranty

whatsoever in respect to accessories or parts not supplied by Hitachi. The term “original

purchaser”, as used in this warranty, shall be deemed to mean that person for whom the

PLC in originally installed.

In no event, whether as a result of breach of contract, warranty, tort (including negligence) or

otherwise, shall Hitachi or its suppliers be liable for any special, consequential, incidental or

penal damages including but not limited to, loss or profit or revenues, loss of use of the

products or any associated equipment, damage to associated equipment, cost of capital,

cost of substitute products, facilities, services or replacement power, down time costs, or

claims of original purchaser’s customers for such damages.

To obtain warranty service, return the product to your distributor, or send it with a description

of the problem, proof of purchase, post paid, insured, and in a suitable package to:

Quality Assurance Dept.

Hitachi Industrial Equipment Systems Co., Ltd.

46-1 Ooaza-Tomioka Nakajo-machi

Kitakanbara-gun, Niigata-ken

959-2608 JAPAN

The Information and/or drawing set forth in this document and all right in and to

inventions disclosed herein and patent which might be granted thereon disclosing or

employing and the materials, methods, techniques or apparatus described herein

are the exclusive property of Hitachi Industrial Equipment Systems Co., Ltd .

No copies of the information or drawings shall be made without the prior constant of

Hitachi Industrial Equipment Systems Co., Ltd.

Hitachi Industrial Equipment Systems Co., Ltd. provides customer assistance in

varied technical areas. Since Hitachi does not possess full access to data

concerning all of the uses and applications of customer’s products, responsibility is

assumed by Hitachi neither for customer product design nor for any infringement of

patents or rights of others, which may result from Hitachi assistance.

The specifications and descriptions contained in this manual were accurate at the

time they were approved for printing. Since Hitachi Industrial Equipment Systems

Co., Ltd. Incorporated constantly strives to improve all its products, we reserve the

right to make changes to equipment and/or manual at any time without notice and

without incurring any obligation other than as noted in this manual.

Hitachi Industrial Equipment Systems Co., Ltd. assumes no responsibility for errors

that may appear in this manual.

As the product works with user program, and Hitachi Industrial Equipment Systems

Co., Ltd. cannot test all combination of user program components, it is assumed

that a bug or bugs may happen unintentionally. If it is happened: please inform the

fact to Hitachi Industrial Equipment Systems Co., Ltd. or its representative. Hitachi

will try to find the reason as much as possible and inform the countermeasure when

obtained.

Nevertheless Hitachi Industrial Equipment Systems Co., Ltd. intends to make

products with enough reliability, the product has possibility to be damaged at any

time. Therefore personnel who are to install and operate the equipment have to

prepare with the countermeasure such as power off switch can be operated

independently of the controller. Otherwise, it can result in damage to equipment

and/or serious injury to personnel.

Safety Precautions

Read this manual and related documents thoroughly before installing, operating, performing

preventive maintenance or performing inspection, and be sure to use the unit correctly. Use this

product after acquiring adequate knowledge of the unit, all safety information, and all cautionary

information. Also, make sure this manual enters the possession of the chief person in charge of

safety maintenance.

Safety caution items are classified as "Danger" and "Caution" in this document.

DANGER :Cases where if handled incorrectly a dangerous circumstance may be created, resulting in

possible death or severe injury.

CAUTION :Cases where if handled incorrectly a dangerous circumstance may be created, resulting

in possible minor to medium injury to the body, or only mechanical damage.

However, depending on the circumstances, items marked with may result in

major

accidents.

In any case, they both contain important information, so please follow them closely.

Icons for prohibited items and required items are shown below:

:Indicates prohibited items (items that may not be performed). For example, when open flames

are prohibited, is shown.

:Indicates required items (items that must be performed). For example, when grounding must

be performed, is shown.

1. About installation

CAUTION

lUse this product in an environment as described in the catalogue and this document.

If this product is used in an environment subject to high temperature, high humidity, excessive

dust, corrosive gases, vibration or shock, it may result in electric shock, fire or malfunction.

lPerform installation according to this manual.

If installation is not performed adequately, it may result in dropping, malfunction or an

operational error in the unit.

lDo not allow foreign objects such as wire chips to enter the unit.

They may become the cause of fire, malfunction or failure.

CAUTION

2. About wiring

REQUIRED

lAlways perform grounding (FE terminal).

If grounding is not performed, there is a risk of electric shocks and malfunctions.

CAUTION

lConnect power supply that meets rating.

If a power supply that does not meet rating is connected, fire may be caused.

lThe wiring operation should be performed by a qualified personnel.

If wiring is performed incorrectly, it may result in fire, damage, or electric shock.

3. Precautions when using the unit

DANGER

lDo not touch the terminals while the power is on.

There is risk of electric shock.

lStructure the emergency stop circuit, interlock circuit, etc. outside the programmable controller

(hereinafter referred to as PC).

Damage to the equipment or accidents may occur due to failure of the PC.

However, do not interlock the unit to external load via relay drive power supply of the relay

output module.

CAUTION

lWhen performing program change, forced output, RUN, STOP, etc., while the unit is running,

be sure to verify safety.

Damage to the equipment or accidents may occur due to operation error.

lSupply power according to the power-up order.

Damage to the equipment or accidents may occur due to malfunctions.

4. About preventive maintenance

DANGER

lDo not connect the , of the battery in reverse. Also, do not charge, disassemble, heat,

place in fire, or short circuit the battery.

There is a risk of explosion or fire.

PROHIBITED

lDo not disassemble or modify the unit.

These actions may result in fire or malfunction.

CAUTION

lTurn off the power supply before removing or attaching module/unit.

Electric shock, malfunction or failure may result.

Revision

No. Content Date Manual No.

Table of contents

1. Introduction 1-1 to 1-4

1.1 Before Use ･･････････････････････････････････････････････････････････････ 1-2

1.2 Precaution on Use ･･･････････････････････････････････････････････････････ 1-3

1.3 Features ････････････････････････････････････････････････････････････････ 1-3

1.4 Principle of Operation ･･･････････････････････････････････････････････････ 1-4

2. Structure and Nameplate 2-1

2.1 Structure and Name of Each Part ･･････････････････････････････････････････ 2-1

3. Specification 3-1 to 3-2

3.1 Specification list ････････････････････････････････････････････････････････ 3-1

3.2 Terminal layout and internal circuit･･･････････････････････････････････････ 3-2

4. Block Diagram 4-1

4.1 Internal Block Diagram ･･････････････････････････････････････････････････ 4-1

5. External Wiring 5-1

5.1 Resistance Temperature Detective Connection Method and External Wiring

･････････････････････････････････････････････････････････････････････････ 5-1

6. Setting 6-1

6.1 Setting of Temperature Range ･･･････････････････････････････････････････ 6-1

7. Collection of Temperature Data 7-1 to 7-7

7.1 I/O Allocation ･･････････････････････････････････････････････････････････ 7-1

7.2 Temperature Data ･･････････････････････････････････････････････････････ 7-2

7.3 Example of Calculation･･････････････････････････････････････････････････ 7-4

7.4 Correspondence Table between Temperature and Temperature Data ････････ 7-5

8. Error Detection Processing 8-1 to 8-2

8.1 Measured Temperature Range Over ･･････････････････････････････････････ 8-1

8.2 Treatment for Sudden Change of Temperature Conversion Data ････････････ 8-2

9. Mounting 9-1 to 9-2

9.1 Installation･････････････････････････････････････････････････････････････ 9-1

9.2 Mounting Method･･･････････････････････････････････････････････････････ 9-1

9.3 Maintenance and Inspection ･････････････････････････････････････････････ 9-1

9.4 Precautions on External Wiring ･･････････････････････････････････････････ 9-2

10. Example of Programming 10-1 to 10-4

10.1 Example of Programming 1 ････････････････････････････････････････････10-1

10.2 Example of Programming 2 (Offset adjustment) ･････････････････････････10-4

11. Troubleshooting 11-1

11.1 The Allocation Error “41”is indicated in CPU ･･･････････････････････････11-1

11.2 Data Error in a Specific Channel ･･･････････････････････････････････････11-1

11.3 Data Error in All Channels ････････････････････････････････････････････11-1

12. Appendix 12-1

12.1 Calculation of External Wiring Resistance ･･････････････････････････････12-1

Table of contents

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