Omron zen 20c1ar a v2 инструкция

Certain Precautions on Specifications and Use

Notice:

OMRON products are manufactured for use according to proper procedures by a qualified operator and only for the purposes described in this manual.

The following conventions are used to indicate and classify precautions in this manual. Always heed the information provided with them. Failure to heed precautions can result in injury to people or damage to property.

!DANGER Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

!WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

!Caution Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury, or property damage.

OMRON Product References

All OMRON products are capitalized in this manual. The word “Unit” is also capitalized when it refers to an OMRON product, regardless of whether or not it appears in the proper name of the product.

Visual Aids

The following headings appear in the left column of the manual to help you locate different types of information.

Note Indicates information of particular interest for efficient and convenient operation of the product.

1,2,3… 1. Indicates lists of one sort or another, such as procedures, checklists, etc.

Precaution Indicates precautionary information that should be heeded in using the ZEN.

Indicate buttons that needs to be pressed in operating procedures. Press one of the buttons once or more.

OMRON, 2003

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form, or by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission of OMRON.

No patent liability is assumed with respect to the use of the information contained herein. Moreover, because OMRON is constantly striving to improve its high-quality products, the information contained in this manual is subject to change without notice. Every precaution has been taken in the preparation of this manual. Nevertheless, OMRON assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained in this publication.

TABLE OF CONTENTS

PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xi

1 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii 2 Application Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii 3 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi 4 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi 5 Operating Mode at Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix 6 Memory Backup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx 7 Version Upgrades. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi

SECTION 1

Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SECTION 2

Installation and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

2-1 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

2-2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

SECTION 3

Programming and Operating Methods . . . . . . . . . . . . . . . . . . . . .49

3-1 Selecting Display Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 3-2 Setting the Date and Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 3-3 Creating Ladder Programs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 3-4 Confirming Ladder Program Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 3-5 Correcting Ladder Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 3-6 Using Timers (T) and Holding Timers (#). . . . . . . . . . . . . . . . . . . . . . . . . . . 67 3-7 Using Counters (C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 3-8 Using Weekly Timers (@) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 3-9 Using Calendar Timers (*). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 3-10 Analog Inputs (Analog Comparators (A)) . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 3-11 Comparing Timer/Counter Present Values Using Comparators (P) . . . . . . . 79 3-12 Displaying Messages (Display Bits (D)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 3-13 Using Button Switches (B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

TABLE OF CONTENTS

SECTION 4

Special Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

4-1 Protecting Programs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

4-2 Stabilizing Input Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

4-3 Changing Backlight Automatic Cutout Time. . . . . . . . . . . . . . . . . . . . . . . . . 92

4-4 Adjusting LCD Screen Contrast. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

4-5 Setting Summertime. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

4-6 Reading System Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

SECTION 5

Optional Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

5-1 Mounting Battery Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

5-2 Using Memory Cassettes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

5-3 Connecting the ZEN Support Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

SECTION 6

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

6-1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

6-2 Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

6-3 Deleting Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Appendices

A Product Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

B Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

C Ladder Program Execution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

D Application Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

E Allocations and Setting Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

About this Manual:

This manual describes the installation and operation of the ZEN Programmable Relay and includes the sections described below.

Please read this manual carefully and be sure you understand the information provided before attempting to install or operate the ZEN. Be sure to read the precautions provided in the following section.

Precautions provides general precautions for using the ZEN and related devices.

Section 1 gives an outline of the ZEN, including example applications, the system configurations and basic operations.

Section 2 explains how to mount and wire the ZEN CPU Units and Expansion I/O Units.

Section 3 explains how to create and edit ladder programs and how to use the timers, counters, comparators, display function and buttons switches.

Section 4 describes how to protect ladder programs, stabilize inputs, make LCD screen adjustments, and make summer time settings.

Section 5 describes how to mount Battery Units, use Memory Cassettes, and how to connect the ZEN Support Software.

Section 6 lists the error messages and provides probable causes and countermeasures for troubleshooting.

The following two manuals are provided for the ZEN Programmable Relay. Refer to them as required in operation.

!WARNING Failure to read and understand the information provided in this manual may result in personal injury or death, damage to the product, or product failure. Please read each section in its entirety and be sure you understand the information provided in the section and related sections before attempting any of the procedures or operations given.

PRECAUTIONS

This section provides general precautions for using the ZEN Programmable Relay.

The information contained in this section is important for the safe and reliable application of the ZEN. You must read this section and understand the information contained before attempting to set up or operate the ZEN.

1 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii 2 Application Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii 2-1 Circuit Design and Ladder Programming . . . . . . . . . . . . . . . . . . . xiii 2-2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii 2-3 Wiring and Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii 2-4 I/O Connections and Startup Precautions . . . . . . . . . . . . . . . . . . . xiv 2-5 Handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv 2-6 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv 2-7 Transportation and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

3 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi 4 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi 4-1 Applicable Directives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi 4-2 Concepts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi 4-3 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii 4-4 Relay Output Noise Reduction Methods . . . . . . . . . . . . . . . . . . . . xvii

5 Operating Mode at Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix 6 Memory Backup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx 7 Version Upgrades. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi 7-1 Application Precautions for Differences between Versions. . . . . . xxii 7-2 CPU Units Covered in this Manual . . . . . . . . . . . . . . . . . . . . . . . . xxiii

1Safety Precautions

!WARNING Never attempt to disassemble any Units while power is being supplied. Doing so may result in serious electrical shock or electrocution.

!WARNING Never touch the I/O terminals, computer connector, Expansion Unit connector, or Battery Unit connector while power is being supplied. Doing so may result in serious electrical shock or electrocution.

!WARNING Provide safety measures in external circuits (i.e., not in the ZEN), including the following items, to ensure safety in the system if an abnormality occurs due to malfunction of the ZEN or another external factor affecting the ZEN operation. Not doing so may result in serious accidents.

•Emergency stop circuits, interlock circuits, limit circuits, and similar safety measures must be provided in external control circuits.

•The ZEN will turn OFF all outputs when its self-diagnosis function detects any error. As a countermeasure for such errors, external safety measures must be provided to ensure safety in the system.

•The ZEN outputs may remain ON or OFF due to deposition or burning of the output relays or destruction of the output transistors. As a countermeasure for such problems, external safety measures must be provided to ensure safety in the system.

•Provide double safety mechanisms to handle incorrect signals that can be generated by broken signal lines or momentary power interruptions.

!WARNING Do not short the battery terminals or charge, disassemble, heat, or incinerate the battery. Do not subject the battery to strong shocks. Doing any of these may result in leakage, rupture, heat generation, or ignition of the battery. Dispose of any battery that has been dropped on the floor or otherwise subjected to excessive shock. Batteries that have been subjected to shock may leak if they are used.

!Caution Tighten the AC power supply terminal block screws to the torque specified in the manual. Loose screws can result in fire or faulty operation.

2Application Precautions

Observe the following precautions when using the ZEN.

2-1 Circuit Design and Ladder Programming

•Provide external interlock circuits, limit circuits, and other safety circuits in addition to any provided within the ZEN to ensure safety.

•The output relays or the output transistors may remain ON due to faults in internal circuits such as output relays or output transistors. As a countermeasure for such problems, external safety measures must be provided to ensure safety in the system.

•Always turn ON power to the ZEN before turning ON power to the I/O circuits. If the ZEN power supply is turned ON after the I/ O power supply, temporary errors may result in operation.

•The life of the output relays is largely affected by the switching conditions. Confirm the operation of the system under actual operating conditions and set the switching frequency to ensure that adequate performance will be provided. Insulation faults and burning in the ZEN may result if relays are used after their performance has deteriorated.

2-2 Installation

•Install the ZEN according to instructions in the operation manual. Improper installation may cause faulty operation.

•Do not install the ZEN in locations subject to excessive noise. Malfunction may occur.

•Do not allow the ZEN to fall during installation.

•Be sure that all the mounting screws on the ZEN and Expansion I/O Unit are tightened to the torque specified in the manual. Incorrect tightening torque may result in malfunction.

•Use with the cover of the computer connector mounted. Using without the cover may result in malfunction due to dust or other foreign matter.

•Be sure that the DIN rail mounting levers, Expansion I/O Units, Memory Cassettes, Battery Units, cable connectors, and other items with locking devices are properly locked into place. Improper locking may result in malfunction.

2-3 Wiring and Connections

•Use the wires specified in this manual when wiring. Use straight crimp terminals when connecting loose wires.

•Provide circuit breakers and other safety measures to provide protection against shorts in external wiring.

•Use separate wiring ducts for signal wires from those used for power supply and high-voltage lines.

•Always check polarity when connecting cables.

•Leave the label attached to the Unit when wiring. Removing the label may result in malfunction if foreign matter enters the Unit.

•Remove the label after the completion of wiring to ensure proper heat dissipation. Leaving the label attached may result in malfunction.

•Tighten the terminal block screws to the torque specified in the manual.

•Wire the ZEN according to instructions in the operation manual. Improper installation may cause faulty operation.

2-4 I/O Connections and Startup Precautions

•Use the Units only with the power supplies and voltages specified in the operation manual. Other power supplies and voltages may damage the Units.

•Take measures to stabilize the power supply to conform to the rated supply if it is not stable.

•Do not apply voltages exceeding the rated input voltage to input circuits. The input circuits may be destroyed.

•Do not apply voltages exceeding the maximum switching capacity to output circuits. The output circuits may be destroyed.

•Double-check all wiring before turning ON the power supply. Incorrect wiring may result in burning.

•Check the user program for proper execution before actually running it on the Unit. Not checking the program may result in an unexpected operation.

2-5 Handling

•Use, store, and transport the ZEN under the limits given for general specifications in this manual.

•Do not attempt to disassemble, repair, or modify any Units. Any attempt to do so may result in malfunction, fire, or electric shock.

•Always turn OFF the power supply to the ZEN before attempting any of the following.

•Assembling the ZEN.

•Attaching or removing the Expansion I/O Unit.

•Connecting or disconnecting any cables or wiring.

•Attaching or removing the Memory Cassette.

•Attaching or removing the Battery Unit.

•Confirm that no adverse effect will occur in the system before attempting any of the following. Not doing so may result in an unexpected operation.

•Changing the operating mode.

•Using the button switches.

•Changing bit status or parameter settings.

•Before touching a Unit, be sure to first touch a grounded metallic object in order to discharge any static build-up.

•Do not pull on the cables or bend the cables beyond their natural limit. Doing either of these may break the cables.

•Do not place objects on top of the cables or other wiring lines. Doing so may break the cables.

•Do not short the battery terminals or charge, disassemble, heat, or incinerate the battery. Do not subject the battery to strong shocks. Doing any of these may result in leakage, rupture, heat generation, or ignition of the battery. Dispose of any battery that has been dropped on the floor or otherwise subjected to excessive shock. Batteries that have been subjected to shock may leak if they are used.

•Abide by all local ordinances and regulations when disposing of the ZEN.

2-6 Maintenance

•When replacing parts, be sure to confirm that the rating of a new part is correct.

•When replacing a Unit, transfer to the new Unit and confirm all settings for clock data, internal holding bits, holding timers, and counter before starting operation again.

2-7 Transportation and Storage

•Use special packaging boxes when transporting the ZEN and do not subject it to excessive shock or vibration or drop it during shipment.

•Store the ZEN in the following temperature and humidity ranges without condensation or icing.

3Operating Environment Precautions

Do not operate the control system in the following places.

•Where the ZEN is exposed to direct sunlight.

•Where the ambient temperature or humidity is beyond the specified ranges.

•Where the ZEN may be affected by condensation due to radical temperature changes.

•Where there is any corrosive or inflammable gas.

•Where there is excessive dust, saline air, or metal powder.

•Where the ZEN is affected by vibration or shock.

•Where any water, oil or chemical may splash on the ZEN.

•Any other place with conditions beyond those specified in the general specifications.

Take appropriate and sufficient countermeasures when installing systems in the following locations:

•Locations subject to static electricity or other forms of noise.

•Locations subject to strong electromagnetic fields.

•Locations subject to possible exposure to radioactivity.

•Locations close to power supplies.

4Conformance to EC Directives

4-1 Applicable Directives

•EMC Directives

•Low Voltage Directive

4-2 Concepts

EMC Directives

OMRON devices that comply with EC Directives also conform to the related EMC standards so that they can be more easily built into other devices or the overall machine. The actual products have been checked for conformity to EMC standards (see the following note). Whether the products conform to the standards in the system used by the customer, however, must be checked by the customer.

EMC-related performance of the OMRON devices that comply with EC Directives will vary depending on the configuration,

wiring, and other conditions of the equipment or control panel on which the OMRON devices are installed. The customer must, therefore, perform the final check to confirm that devices and the overall machine conform to EMC standards.

Note Applicable EMC (Electromagnetic Compatibility) standards are as follows:

EMS (Electromagnetic Susceptibility): EN61000-6-2

EMI (Electromagnetic Interference): EN50081-2

(Radiated emission: 10-m regulations)

Low Voltage Directive

Always ensure that devices operating at voltages of 50 to 1,000 VAC and 75 to 1,500 VDC meet the required safety standards for the ZEN (EN61131-2).

4-3 Conformance to EC Directives

The ZEN complies with EC Directives. To ensure that the machine or device in which the ZEN is used complies with EC Directives, the ZEN must be installed as follows:

1,2,3… 1. The ZEN must be installed within a control panel.

2.You must use reinforced insulation or double insulation for the DC power supplies used for the communications power supply and I/ O power supplies.

3.ZEN models complying with EC Directives also conform to the Common Emission Standard (EN50081-2). Radiated emission characteristics (10-m regulations) may vary depending on the configuration of the control panel used, other devices connected to the control panel, wiring, and other conditions.

You must therefore confirm that the overall machine or equipment complies with EC Directives.

4-4 Relay Output Noise Reduction Methods

The ZEN conforms to the Common Emission Standards (EN50081-2) of the EMC Directives. However, noise generated by relay output switching may not satisfy these Standards. In such a case, a noise filter must be connected to the load side or other appropriate countermeasures must be provided external to the ZEN.

Countermeasures taken to satisfy the standards vary depending on the devices on the load side, wiring, configuration of machines, etc. Following are examples of countermeasures for reducing the generated noise.

Countermeasures

(Refer to EN50081-2 for more details.)

Countermeasures are not required if the frequency of load switching for the whole system with the ZEN included is less than 5 times per minute.

Countermeasures are required if the frequency of load switching for the whole system with the ZEN included is more than 5 times per minute.

Countermeasure Examples

When switching an inductive load, connect an surge protector, diodes, etc., in parallel with the load or contact as shown below.

5Operating Mode at Startup

The operating mode at startup depends on the model and the presence of a user program as shown in the following table.

6Memory Backup

The ladder program and settings are stored in EEPROM and thus will not be lost even if the power supply is turned OFF for an extended period of time (e.g., 2 days at 25°C). The status of the following data, however, is backed up by an internal capacitor, and may be lost if power is turned OFF for an extended period of time: ON/OFF status of holding bits (H), holding timers (#), and counters (C) and the prevent value areas. For models equipped with a clock/calendar, the time and date may be reset. Always reconfirm system operation before restarting operation after the power has been turned OFF for an extended period of time. We recommend that a Battery Unit be (optional) connected in any system in which power may be interrupted for an extended period of time.

7Version Upgrades

The following table shows the relationship between the versions and functionality of the ZEN CPU Unit and ZEN Support Software

Note The model numbers of CPU Units with 10 or 20 I/O points end in “-V1.”

Note 1. The number of the system software version in the CPU Unit is not related to the model number. The system software version of CPU Units with LCDs can be read by selecting SYSTEM INFO from the OTHER Menu. “V02.00” will be displayed as the system software version for V1 CPU Units.

2.Memory Area Comparison between V1 and Pre-V1 CPU Units

7-1 Application Precautions for Differences between Versions

Memory Cassette Compatibility

Be aware of the following restrictions when using a Memory Cassette containing a program that was stored from a CPU Unit with a different version of system software.

Note 1. The new display functions (display clear: -CD@ and day/month display: DAT1) cannot be used and will be ignored.

2.Only the memory area ranges supported by the pre-V1 CPU Units can be used for Timers, Holding Timers, Counters, Weekly Timers, Calendar Timers, and Displays (i.e., only half of each).

3.Only 6 inputs and 4 outputs can be used in the CPU Unit I/O bits. Any others will be ignored.

Compatibility of Programs Depending on Support Software Version

Note 1. The new display functions (display clear: -CD@ and day/month display: DAT1) cannot be used and will be ignored.

2.Only the memory area ranges supported by the pre-V1 CPU Units can be used for Timers, Holding Timers, Counters, Weekly Timers, Calendar Timers, and Displays (i.e., only half of each).

7-2 CPU Units Covered in this Manual

The material in this manual is based on the memory areas of the V1 CPU Units. If you are using a pre-V1 CPU Unit, the sizes of some of the memory areas will be different. Refer to page xxii for details.

Also, the I/O circuits and I/O terminal arrangements for CPU Units for DC power supply different between V1 and pre-V1 CPU Units, as described in the following table. Refer to page 38 for details

SECTION 1

Outline

This section gives an outline of the ZEN, including example applications, the system configurations and basic operations.

1-1 Outline

The ZEN Programmable Relay is an extremely small programmable controller that provides 10 programmable I/O points (6 inputs and 4 outputs) to enable low-cost, small-scale automation. There is also a new model that provides 20 programmable I/O points (12 inputs and 8 outputs) along with 16 of each of the following: Timers, counters, displays, etc.

In this manual, the ZEN Programmable Relay is referred to as merely the “ZEN.”

The ZEN comes in basically two types: LCD and LED.

•LCD Type: LCD screen and operation buttons

•LED Type: No LCD screen or operation buttons

The following pages provide a few examples of the way the ZEN meets a wide variety of application needs.

Low-cost, Small-scale Automatic Control

One CPU Unit provides 12 inputs and 8 outputs (with CPU Unit with 20 I/O points).

Water-supply facilities in apartments, lighting control in

Easy Operation with an Inexpensive Controller

Ladder programming is possible directly from a LCD-type CPU Unit. Ladder programs can be easily copied to low-cost LED-type CPU Units by using Memory Cassettes (optional).

Smaller Control Panels

The ZEN is very small at 90 x 70 x 56 mm (H x W x D) and mounts essentially anywhere.

Note Dimensions are 90 x 122.5 x 56 mm (H x W x D) for CPU Units with 20 I/O points.

70 mm

90 mm

CPU Unit with 10 I/O points

Less Assembly and Wiring Time Required for Control Panels

Simple one-touch DIN Track mounting. Built-in timers and counters so only power supply and I/O circuit wiring required.

Solid wires can be easily connected using only a screwdriver.

Refer to page 33.

Future System Expandability

I/O capacity can be expanded to up to 24 inputs and 20 outputs by connecting 3 Expansion I/O Units.

Refer to page 9 and 33.

CPU Unit Expansion I/O Units (up to 3)

12 inputs/8outputs + (4 inputs/4outputs) 3

Power Failure Countermeasures

EEPROM backs up the program and system settings data when no power is supplied to the ZEN.

Use a Battery Unit (optional) to back up work bits, holding timers, counters, and date/time data.

Refer to page 96.

Battery

Unit

Easy Saving and Copying of Programs

Use an optional Memory Cassette to easily save and copy programs.

Refer to page 97.

Ladder program data/settings.

Memory Cassette

Programming and Monitoring from a Personal Computer

Windows-based ZEN Support Software is available and provides a complete simulation function.

Refer to page 99.

ZEN Support

Software

(CD-ROM)

Greater Switching Capacity

The output contacts have 8-A switching capacity (250 VAC). All contacts are independent (for CPU Units with 10 I/O points).

Refer to page 45.

8 A max.

MC

250 V

AC Inputs

For CPU Units with AC power supply inputs, 100 to 240 VAC can be directly connected.

Refer to page 35.

100 to 240 VAC

Easy Program Design

There are 4 different operations that can be set for bit outputs. Selfholding bits also can be easily programmed.

Refer to page 58.

Ry

-[Q0 Normal operation -SQ0 Set operation -RQ0 Reset operation -AQ0 Alternate operation

Complicated Timers without Additional Programming

Any of the 16 timers support 4 types of operation and 3 timing ranges.

There are also 8 built-in holding timers that hold data during power interruptions.

Refer to page 67.

TIM

Incremental and Decremental Counters

There are 16 built-in counters that can be switched between incrementing and decrementing.

Use Comparators to enable programming multiple outputs from a counter.

Counters: Refer to page 70. Comparators: Refer to page 79.

C

D CNT

R

Control number of cars entering and leaving a car park.

Seasonor Day-dependent Operating Times

CPU Units with built-in calendar and clock functions have 16 weekly timers and 16 calendar timers. Seasonal control is possible using calendar timers and day/time control is possible with weekly timers.

Weekly timers: Refer to page 72.

Calendar timers: Refer to page 74.

MO − FR

SA − SU

For gardens, parks, and recreational ponds.

Direct Analog Inputs

CPU Units with DC power supply inputs have 2 analog input points (0 to 10 V) and 4 analog comparators.

Refer to page 75.

Temperature control for hot houses and tanks. Prevent freezing of swimming pools.

Easier Maintenance

Use the display function in LCD-type CPU Units to display user-set messages, the date, time, or other data. Button switches can also be used as input contacts. Applications include usage as a simple display operation panel.

Refer to page 82.

Longer Backlight for Dark Situations

The automatic cutout time for the backlight for LCD-type CPU Units can be set to 2, 10, or 30 minutes, or set to operate continuously. With the display function, the backlight can also be set to turn ON when a message is displayed.

Refer to page 92.

Prevent Chattering and Noise-related Malfunctions

Set the input filters to extend the filter timer and prevent malfunctions.

Refer to page 90.

Filter timer

ON

Exporting Systems Overseas

Display for LCD-type CPU Units is available in 6 languages. A Summertime function also supported.

Changing display language: Refer to page 50. Summertime settings: Refer to page 93.

ENGLISH

JAPANESE

GERMAN

FRENCH

ITALIAN

SPANISH

Programming Security

Programs can be protected by setting a password.

Refer to page 88.

PASSWORD

0000

RUN

3 9 5 4

1-2 Features and Part Names

1-2-1 Features and System Configuration

The ZEN is small but has a wide range of functions and is easy to use. The ZEN facilitates small-scale automatic control.

LCD-type CPU Unit Features

•Simple button-operated programming.

•Highly visible, backlit LCD.

•Adjustable automatic cutout time for the backlight.

•Adjustable contrast for the LCD screen.

•Six-language display.

•Display function for user-set messages (4 lines x 12 characters), time, or timer, counter, or analog-converted value displays.

•Button switches allowing operation buttons to be used as input contacts.

•Built-in weekly and calendar timers to allow simple seasonal, daily, or time-based operation.

LCD-type and LED-type CPU Unit Features

•Both 100 to 240-VAC and 24-VDC power supply models available.

•Built-in analog comparator for temperature control and other analog applications (provided on CPU Units with DC power supply inputs, two analog inputs 0 to 10 V).

•Input filter settings to prevent noise-related malfunctions for both CPU Units and Expansion I/O Units.

•Program and settings data backed up on built-in EEPROM.

•Programming using ladder diagrams.

•Password function to protect programs.

Features and Part Names Section 1-2

LCD-type CPU Units with 20 I/O Points (with LCD and Operation Buttons)

LED-type CPU Units with 10 I/O Points (without LCD/Operation Buttons)

The ZEN is also available in an LED type that provides full operating functionality, but no direct programming input. The ZEN Support Software or a Memory Cassette containing a program is required.

Indicators

Features and Part Names Section 1-2

LED-type CPU Units with 20 I/O Points (without LCD/Operation Buttons)

Indicators

Features and Part Names Section 1-2

Differences between LCDand LED-type CPU Units

Features and Part Names Section 1-2

Expansion I/O Units

1-3 Display Screen and Basic Operations

The display screen for the LCD-type CPU Units and the operations of the buttons are shown below.

ESC Button OK Button

Icon Meanings

RUN ERR ▲ ▼

Display Screen and Basic Operations Section 1-3

Operation Button Names and Operations

Display Screen and Basic Operations Section 1-3

Display Screens

Main Screen

When One or More Expansion I/O Units Are Connected

Expansion I/O Unit input bit (X) status

( : OFF/ : ON)

Display Screen and Basic Operations Section 1-3

Menu Screen Configuration

Switches to STOP mode.

The operation status of the timers, counters, and analog comparators can be monitored and the settings changed during operation. Refer to page 25.