Omega Products EZ500 Installation Manual

EZ500/700 Series

Re-Order from

omegamation.com

Omegamation

TM

1-888-55-OMEGA

1-888-55-66342

1-888-55-66342

User Manual

April 2005

For more information visit: www.EatonElectrical.comMN05013003E

Warning!
Dangerous electrical voltage!

Before commencing the installation

• Disconnect the power supply of the device.

• Ensure that devices cannot be accidentally
restarted.

• Verify isolation from the supply.

• Short circuit to earth.

• Cover or enclose neighboring units that
are live.

• Follow the engineering instructions (AWA)
of the device concerned.

• Only suitably qualified personnel in
accordance with EN 50110-1/-2 (VDE 0105
Part 100) may work on this device/system.

• Before installation and before touching
the device ensure that you are free of
electrostatic charge.

• The functional earth (FE) must be
connected to the protective earth (PE) or
to the potential equalization. The system
installer is responsible for implementing this
connection.

• Connecting cables and signal lines should
be installed so that inductive or capacitive

interference does not impair the automation
functions.

• Install automation devices and related
operating elements in such a way that they
are well protected against unintentional
operation.

• Suitable safety hardware and software
measures should be implemented for the
I/O interface so that a line or wire breakage
on the signal side does not result in
undefined states in the automation devices.

• Ensure a reliable electrical isolation of the
low voltage for the 24 volt supply. Only
use power supply units complying with
IEC 60364-4-41 (VDE 0100 Part 410) or HD

384.4.41 S2.

• Deviations of the mains voltage from the
rated value must not exceed the tolerance
limits given in the specifications, otherwise
this may cause malfunction and dangerous
operation.

• Emergency stop devices complying with
IEC/EN 60204-1 must be effective in all
operating modes of the automation devices.
Unlatching the emergency-stop devices
must not cause restart.

Eaton

Safety instructions

For more information visit: www.EatonElectrical.comMN05013003E I

• Devices that are designed for mounting in
housings or control cabinets must only be
operated and controlled after they have
been installed with the housing closed.
Desktop or portable units must only be
operated and controlled in enclosed
housings.

• Measures should be taken to ensure the
proper restart of programs interrupted after
a voltage dip or failure. This should not
cause dangerous operating states even for
a short time. If necessary, emergency-stop
devices should be implemented.

• Wherever faults in the automation system
may cause damage to persons or property,
external measures must be implemented to
ensure a safe operating state in the event of
a fault or malfunction (for example, by
means of separate limit switches,
mechanical interlocks etc.).

MN05013004E For more information visit: www.EatonElectrical.com MN05013003EII

Contents

About This Manual 9

Device designation 9
Writing conventions 10

1EZ 11

Target readership 11
Proper use 11
– Improper use 11
Overview 12
Modelse 15
– Type reference 17
EZ operation 18
– Buttons 18
– Moving through menus and choosing values 18
– Selecting main and system menu 19
– EZ Status display 20
– Status display for local expansion 20
– Advanced Status display 21
– EZ LED display 21
– Menu structure 22
– Selecting or toggling between menu items 27
– Cursor display 27
– Setting values 28

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2 Installation 29

Mounting 29
Connecting the expansion device 32
Terminals 33
– Tools 33
– Cable cross-sections 33
Connecting the power supply 33
– Cable protection 33
– Supplying AC units 34
– Supplying DC units 35
Connecting the inputs 37
– Connecting EZ AC digital inputs 37
– Connecting EZ DC digital inputs 42
– Connecting EZ DC analog inputs 44
– Connecting high-speed counters and

frequency generators 49
Connecting the outputs 51
– Connecting relay outputs 52
– Connecting transistor outputs 54
Expanding inputs/outputs 57
– Local expansion 57
– Remote expansion 58
Connecting bus systems 60

3 Commissioning 61

Switching on 61
Setting the menu language 62
EZ operating modes 63
Creating your first circuit diagram 64
– Circuit diagram display 66
– From the first contact to the output coil 67
– Wiring 68
– Testing the circuit diagram 69
– Deleting the circuit diagram 71
– Fast circuit diagram entry 71

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4 Wiring with EZ 73

Operation of EZ 73
– Buttons for editing circuit diagrams and

function relays 73
– Operation 74
– Relay, function relays 77
– Saving and loading circuit diagrams 80
Working with contacts and relays 80
– Input and output contacts 81
– Creating and modifying connections 84
– Inserting and deleting a rung 86
– Switching with the cursor buttons 87
– Checking the circuit diagram 88
– Coil functions 89
Function relays 95
– Example with function relay timer and

counter relay 96
Analog value comparator/threshold value switch 102
– Circuit diagram display with analog

value comparator 103
– Parameter display in RUN mode 105
– Resolution of the analog inputs 105
– Function of the analog value comparator 106
Counters 114
– Function of the counter function relay 118
High-speed counters, EZ-DA, EZ-DC 122
– Frequency counters 122
– High-speed counter 128
Text display 134
– Wiring a text display 135
– Retention 135
– Scaling 136
– Function 136
– Text entry 137
– Character set 137
– Entering a setpoint in a display 138

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7-day time switch 140
– Parameter display and parameter set

for 7-day time switch: 140
– Changing time switch channel 141
– Function of the 7-day time switch 142
Operating hours counter 145
– Value range of the operating hours counter 146
– Accuracy of the operating hours counter 146
– Function of the operating hours counter

function block 146
Timing relays 150
– Parameter display and parameter set for

a timing relay: 150
– Retention 151
– Timing relay modes 152
– Time range 152
– Function of the timing relay function block 155
– Timing relay examples 163
Jumps 166
– Function 166
– Power flow display 167
Year time switch 169
– Wiring of a year time switch 169
– Parameter display and parameter set

for the year time switch: 170
– Changing time switch channel 171
– Entry rules 171
– Function of the year time switch 173
Master reset 176
– Operating modes 177
– Function of the master reset function relay 177

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Basic circuits 178
– Negation (contact) 178
– Negation (coil) 179
– Maintained contact 179
– Series circuit 179
– Parallel circuit 180
– Parallel circuit operating like a series

connection of make contacts 181

– Parallel circuit operating like a series

connection of break contacts 182
– Two-way circuit 182
– Self-latching 183
– Impulse relay 184
– Cycle pulse on rising edge 184
– Cycle pulse on falling edge 185
Example circuits 186
– Star-delta starting 186
– 4x shift register 188
– Running light 192
– Stairwell lighting 194

5 EZ Settings 199

Password protection 199
– Password setup 200
– Selecting the scope of the password 201
– Activating the password 202
– Unlocking EZ 203
– Changing or deleting the password range 204
Changing the menu language 205
Changing parameters 206
– Adjustable parameters for function relays 207
Setting date, time and daylight saving time 209
– Setting the time 209
– Setting summer time start and end 210
– Setting summer time start and end 211
– Summer time start and end, setting the rule 211
Activating debounce (input delay) 218
– Activating debounce (input delay) 219
– Deactivating debounce (input delay) 219

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Activating and deactivating the P buttons 220
– Activating the P buttons 220
– Function of the P buttons 220
– Deactivating the P buttons 221
Startup behavior 221
– Setting the startup behavior 221
– Behavior when the circuit diagram is deleted 222
– Behavior during upload/download to card or PC 222
– Possible faults 223
– Card mode behavior 223
Setting the cycle time 225
Retention (non-volatile data storage) 226
– Permissible markers and function relays 226
– Setting retentive behavior 226
– Deleting retentive actual values 228
– Transferring retentive behavior 228
– Changing the operating mode or the

circuit diagram 229

– Changing the startup behavior in the

SYSTEM menu 229

Displaying device information 230

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6 Inside EZ 231

EZ circuit diagram cycle 231
– EZ operation and effects on circuit

diagram creation 232
Delay times for inputs and outputs 234
– Delay times with EZ-DA and EZ-DC basic units 234
– Delay time with EZ-AB, EZ-AC basic units 236
– Delay times for the analog inputs of

EZ-AB, EZ-DA and EZ-DC 237
Monitoring of short-circuit/overload with EZ..-D.-T.. 238
Expanding EZ700 239
– How is an expansion unit recognized 240
– Transfer behavior 240
– Function monitoring of expansion units 241
Saving and loading circuit diagrams 242
– EZ…-..-..X 242
– Interface 242
Memory card 244
– Loading or saving circuit diagrams 245
EZSoft 248
Overview with stand-alone display/operating unit 249
Device version 250

7 What Happens If ...? 251

Messages from the EZ system 251
Possible situations when creating circuit diagrams 252
Event 254

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Appendix 255

Dimensions 255
Technical Data 258
– General 258
– Special approvals 260
– Power supply 261
– Inputs 262
– Relay outputs 268
– Transistor outputs 270
List of the function relays 273
– Usable contacts 273
– Available function relays 274
– Names of relays 275
– Names of function relay 275
– Name of function block inputs

(constants, operands) 276

– Memory card attributes 276

Glossary 277

Index 281

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About This Manual

This manual describes the installation, commissioning and
programming (circuit diagram generation) of the EZ500 and
EZ700 control relay.

Specialist electrical training is needed for commissioning and
creating circuit diagrams. When active components such as
motors or pressure cylinders are controlled, parts of the
system can be damaged and persons put at risk if the device
is connected or programmed incorrectly.

Device designation This manual uses the following abbreviated designations for

different EZ models:
EZ512-..-..., EZ7..-..-...

Type designation of the control relay, the dots represent
placeholders for all characters used.

EZ500 for
EZ512-AB-..., EZ512-AC-..., EZ512-DA-... and EZ512-DC-...

EZ700 for
EZ719-AB-..., EZ719-AC-..., EZ719-DA-..., EZ719-DC-... and
EZ721-DC-...

EZ-AB for
EZ512-AB-...
EZ719-AB-...

EZ-AC for
EZ512-AC-...
EZ618-AC-RE and EZ719-AC-...

EZ-DA for
EZ512-DA-...
EZ719-DA-...

EZ-DC for
EZ512-DC-...
EZ6..-DC-..., EZ719-DC-... and EZ721-DC-...

For more information visit: www.EatonElectrical.com 9MN05013003E

About This Manual

EZ-E for
EZ2.._RE, EZ618-AC-RE, EZ618-DC-RE and EZ620-DC-TE

EZSoft for EZSoftBasic and EZSoft

Writing conventions Symbols used in this manual have the following meanings:

X indicates actions to be taken.

Attention!

Warns of a hazardous situation that could result in damage
to the product or components.

Caution!

Warns of the possibility of serious damage and slight injury.

Warning!

Warns of the possibility of a hazardous situation that could
result in major damage and serious or fatal injury or even
death.

J

Indicates interesting tips and additional information

For greater clarity, the name of the current chapter is shown
in the header of the left-hand page and the name of the
current section in the header of the right-hand page. Pages at
the start of a chapter and empty pages at the end of a chapter
are exceptions.

MN05013003E For more information visit: www.EatonElectrical.com

MN05013003E10

1EZ

Target readership EZ must only be installed and connected up by trained

electricians or other persons who are familiar with the
installation of electrical equipment.

Specialist electrical training is needed for commissioning and
creating circuit diagrams. When active components such as
motors or pressure cylinders are controlled, parts of the
system can be damaged and persons put at risk if EZ is
connected or programmed incorrectly.

Proper use EZ is a programmable switching and control device and is

used as a replacement for relay and contactor control circuits.
EZ may only be operated when it has been correctly and
properly installed.

• EZ is designed to be installed in an enclosure, switch
cabinet or service distribution board. Both the power feed
and the signal terminals must be laid and covered so as to
prevent accidental contact.

• The installation must comply with regulations for
electromagnetic compatibility (EMC).

• The starting up of EZ should not cause any hazards arising
from controlled devices, such as unexpected motor startups
or power ups.

Improper use

EZ should not be used as a substitute for safety-related
controls such as burner or crane controls, emergency-stop or
two-hand safety controls.

For more information visit: www.EatonElectrical.com 11MN05013003E

EZ

Overview

2

3

4

1

2

10

5

P
O

W

B

U
S

P
O

W

E
R

C

O

M

-E
R

R

A

D

R

ERR

6

7

8

MS

NS

9

Figure 1: EZ basic units and expansion devices

For more information visit: www.EatonElectrical.com

MN05013003E12

Overview

Legend for figure 1:

 EZ500 basic unit
 EZ700 I/O expansion
 EZ202-RE output expansion
 EZ200-EZ coupling device
 EZ-LINK-DS data connector
 EZ204-DP PROFIBUS-DP slave gateway
 EZ205-ASI AS-Interface slave gateway
 EZ221-CO CANopen gateway
 EZ222-DN DeviceNet gateway
 EZ700 basic unit

EZ is an electronic control relay with logic functions, timer,
counter and time switch functions. It is also a control and input
device in one that can perform many different tasks in
domestic applications as well as in machine building and plant
construction.

Circuit diagrams are connected up using ladder diagrams,
and each element is entered directly via the EZ display. For
example, you can:

• Connect make and break contacts in series and in parallel

• Connect output relays and markers,

• Use outputs as relays, impulse relays or latching relays

• Use multi-function timing relays with different functions

• Use up and down counters,

• Count high-speed counter pulses

• Measure frequencies

• Process analog inputs, EZ-AB, EZ-DA, EZ-DC, (EZ512..:
two analog inputs, EZ700: four analog inputs)

• Display any texts with variables, enter setpoints

• Use year time switches, 7-day time switches, EZ…-..-.C(X),

• Count operating hours (four retentive operating hours
counters integrated)

• Track the flow of current in the circuit diagram

• Load, save and password-protect circuit diagrams

For more information visit: www.EatonElectrical.comMN05013003E 13

EZ

If you prefer to wire up EZ from a PC, then use EZSoft. EZSoft
allows you to create and test your circuit diagram on the PC.
EZSoft is also used to print out your circuit diagram in DIN,
ANSI or EZ format.

For more information visit: www.EatonElectrical.com

MN05013003E14

Models EZ basic units at a glance

Overview

햸

햲

DEL

DEL

ESC

ESC

ALT

OK

햳

ALT

OK

Figure 2: Models

 Power supply
 Inputs
 Status LED
 Buttons
 Interface socket for memory card or PC connection
 Outputs
 LCD display

햴

햵

햶

햷

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EZ

EZ basic units with stand-alone EZD-80.., EZD-CP4-500 HMI
unit

1

3

4

3

2

Figure 3: Overview with stand-alone HMI unit

 EZ500 basic units
 EZ700 basic units
 EZD device
 Power supply/communication module with EZD-CP4-500

interface cable

For more information visit: www.EatonElectrical.com

MN05013003E16

Type reference

EZ xxx-xx-xxx

Overview

LCD display: X = No display
Time switch: C = Available; E = Expansion

Output type:
R = Relay (max. 8 A)
T = Transistor (0.5 A, parallel connection possible up to 2 A)

Supply voltage, device and inputs
AB = 24 V AC (2, (4) inputs, also usable as 0 to 10 V analog inputs)

AC = 100, 120, 230, 240 V AC
DC = 24 V DC (2 (4) inputs, also usable as 0 to 10 V analog inputs)
DA = 12 V DC (2 (4) inputs, also usable as 0 to 10 V analog inputs)

Number of inputs/outputs (+ expansion)
12 = 8 I/4 O
18 = 12 I/6 O
19 = 12 I/6 O + expansion
20 = 12 I/8 O
21 = 12 I/8 O + expansion

Rating class (RC) and space unit (SU)
2 = 35.5 mm (SU)
5 = 71.5 mm (4 SU), RC = 4 or 5
6, 7= 107.5 mm (6 SU), RC = 6 or 7

EZ control relay

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EZ

EZ operation Buttons

DELDELDELDELDELDELDELDELDELDEL

ESC

and

ALT

OK

DEL: Delete object in circuit diagram
ALT: Special functions in circuit diagram, Status display
Cursor buttons úíÍÚ:

Move cursor
Select menu items
Set contact numbers, contacts and values

OK: Next menu level, Save your entry
ESC: Previous menu level, Cancel

Moving through menus and choosing values

Show System menu

Go to next menu level
Select menu item
Store your entry

Return to last menu level
Cancel your entry since the last

ÍÚ

Change menu item

OK

Change value
Change position

úí

P button function (if enabled):

ú

Input P1

í

Input P3

Í
Ú

Input P2
Input P4

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MN05013003E18

Selecting main and system menu
Status display

EZ500: 8 inputs, 4 outputs

Overview

Current selection flashes in

the EZ menu

Clock menu on

devices with clock

I .2..5.....

1.2

MO 02:00

RS

..34 . RUN

MO
.2 6..

PROGRAM...

STOPå RUN
PARAMETER
INFO...
SET CLOCK

1st menu level

Main menu

P-

and

No
password

SECURITY...

SYSTEM...
LANGUAGE...

1st menu level

EZ500 or EZ700 System
menu

SECURITY...
SYSTEM...
LANGUAGE...
CONFIGURATOR

The CONFIGURATOR menu
appears if a configurable
expansion module is connected
such as EZ204-DP
(PROFIBUS-DP bus gateway)

For more information visit: www.EatonElectrical.comMN05013003E 19

EZ

Toggling between weekday, time display and date display

(only on devices with clock)

.2..5.......

MO 11:50

..34 RUN

P-

.2..5.......

01.04.2004

..34 RUN

EZ Status display

.2..5.......

MO 11:50

Q ..34..STOP

Inputs

1.......9...

RS AC P-

Weekday/Time or Weekday/Date

Outputs RUN/STOP mode

MO 10:42

1.....7. RUN

On: 1, 2, 3, 4
/Off:…

P-

.2..5......

P-

01.04.2002

Q ..34..STOP

EZ500: input 1 to 8,
EZ700: input 1 to 12

EZ500: output 1 to 4,
EZ700: output 1 to 6 or 8

P-

Status display for local expansion

Inputs

Expansion

Weekday/Time or Weekday/Date

Outputs

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1.......9...

RS AC P­MO 10:42

1.....7. RUN

On: 1, 2, 3, 4/Off:…
RS = Expansion functioning correctly

MN05013003E20

Advanced Status display

12...6.89...

Retention/Debounce AC expansion ok/P buttons

: Retention switched on

RE

: Debounce switched on

I

: AC expansion functioning correctly

AC

: DC expansion functioning correctly

DC

: Bus coupling module detected

GW

RE I ACP-

17.03.04 ST

123.5.78 RUN

GW flashes: Only EZ200-EZ detected. I/O expansion not detected.

17.03.04 Display of actual device date

: When the power supply is switched on, EZ switches to STOP mode

ST

EZ LED display

EZ512-..-..X, EZ700 and EZ-E feature an LED on the front
indicating the status of the power supply as well as whether
RUN or STOP mode is active (J figure 2, page 15).

Overview

Startup behavior

LED OFF No power supply
LED

Power supply present, STOP mode

continuously lit
LED flashing

For more information visit: www.EatonElectrical.comMN05013003E 21

Power supply present, RUN mode

EZ

Main menu

Menu structure
Main menu without password protection

XYou access the main menu by pressing OK.

STOP: Circuit diagram

display

PROGRAM....Æ

STOP å RUN
PARAMETER
INFO... æ
SET CLOCK..

The
arrows
indicate
that there
are more
than four
menus.

PROGRAM...

DELETE PROG
CARD

PROGRAM...

DELETE PROG

CARD...

PROGRAM...
DELETE PROG

CARD...

Circuit diagram

SAVE

CANCEL

DELETE ?

DEVICE-CARD

CARD-DEVICE
DELETE CARD

DEVICE-CARD

CARD-DEVICE

DELETE CARD

DEVICE-CARDE
CARD-DEVICE

DELETE CARD

Parameter display

Parameters

REPLACE ?

REPLACE ?

DELETE ?

For more information visit: www.EatonElectrical.com

MN05013003E22

Overview

Mai

n menu

PROGRAM....Æ

STOP RUN å

PARAMETER
INFO... æ
SET CLOCK..

PROGRAM....Æ

STOP RUN å

PARAMETER...

INFO... æ
SET CLOCK..

PROGRAM....Æ

STOP RUN å
PARAMETER...

INFO... æ

SET CLOCK..

Parameter display

T1 X S +
T2 Ü M:S +
C1 N +
O1 +

T1 X S +
S1 10.000
S2 +0

T:

Information display of the device

DC TC LCD
OS: 1.00.027
CRC: 02752

PROGRAM...
STOP RUN Æ
PARAMETER
INFO...

SET CLOCK.æ

Display for date and time setting

SET CLOCK..

SUMMER
TIME..

For more information visit: www.EatonElectrical.comMN05013003E 23

HH:MM --:--
DD.MM --.--
YEAR ____

HH:MM 14:23
DD.MM 17.03
YEAR 2004

EZ

Mai

n menu

PROGRAM...
STOP RUN Æ
PARAMETER...
INFO...

SET CLOCK.æ

SET CLOCK..

SUMMER TIME.

SET CLOCK..

SUMMER TIME.

Only one selection is possible.

NONE åÆ

RULE...
EU
GB æ
US

NONE Æ

RULE...

EU
GB æ
US

SUMMER START
SUMMER END

AM --Æ
WD: --

-­DD.MM:00.00æ
HH:MM:00:00
DIFF: 0:00

SET CLOCK..

SUMMER TIME.

SET CLOCK..

SUMMER TIME.

NONE Æ

RULE... å

EU
GB æ
US

NONE Æ

RULE... å

EU
GB æ
US

For more information visit: www.EatonElectrical.com

SUMMER START
SUMMER END

SUMMER START

SUMMER END

AM --Æ
WD: --

-­DD.MM:00.00æ
HH:MM:00:00
DIFF: 0:00

MN05013003E24

PASSWORD.. Æ

STOP RUN å
PARAMETER...
INFO... æ
SET CLOCK..

PASSWORD...

STOP RUN å

System menu

SECURITY...

SYSTEM...
LANGUAGE...
CONFIGURATOR

Example:
Password only
on program

Password setup

PASSWORD...

RANGE...

Overview

Main menu with password protection

Password entryUnlocking EZMain menu

Password

Status display

Correct entry

EZ System menu

The System menu is accessed by simultaneously pressing

DEL and ALT.

Password entry

ENTER PASSW:

XXXX

DELETE ALL

Four wrong entries
(if enabled)

CHANGE PW

ACTIVATE PW

Change/
delete
password

ACTIVATE PW

CHANGE PW

PASSWORD...

RANGE...

ENTER PASSW:

XXXX

PROGRAM å Æ

PARAMETER
TIME
MODE æ
INTERFACE
DEL PROG

CHANGE PW

ACTIVATE PW

PROGRAM å Æ

PARAMETER å
TIME å
MODE æ
INTERFACE å
DEL PROG å

For more information visit: www.EatonElectrical.comMN05013003E 25

EZ

System menu

SECURITY...

SYSTEM...

LANGUAGE...
CONFIGURATOR

SECURITY...
SYSTEM...

LANGUAGE...

CONFIGURATOR

SECURITY...
SYSTEM...
LANGUAGE...

CONFIGURATOR

DEBOUNCE å
P-BUTTONS
RUN MODE å
CARD MODE

ENGLISH Æ
DEUTSCH å
FRANCAIS
ESPANOL æ
ITALIANO
PORTUGUES
NEDERLANDS
SVENSKA
POLSKI
TURKCE
CESKY
MAGYAR

Only one selection is possible.

The further menus depend on the
connected expansion device

For more information visit: www.EatonElectrical.com

MN05013003E26

PROGRAM...
STOP

PARAMETER

INFO

Selecting or toggling between menu items

Í Ú

Cursor

Select or toggle

Cursor display

Overview

HH:MM '4:23
DD.MM 17.03
YEAR 2004

HH:MM 14:23
DD.MM 17.03
YEAR 2004

The cursor flashes.
Full cursor

• Move cursor with

• in circuit diagram also with

Ê/:

úí,

Í Ú

Value M/M

• Change position with úí

• Change values with Í Ú
Flashing values/menus are shown in gray in this manual.

For more information visit: www.EatonElectrical.comMN05013003E 27

EZ

Setting values

HH:MM 14:23
DD.MM 17.03
YEAR 2004

Values

Digits

Current value at the

position (can be

changed, Cursor = 3)

Select value

Í Ú

Select digit úí
Change value at digit ÍÚ

Store entries

Retain previous value

For more information visit: www.EatonElectrical.com

MN05013003E28

2Installation

EZ must only be installed and wired up by trained electricians
or other persons familiar with the installation of electrical
equipment.

Danger of electric shock
Never carry out electrical work on the device while the

power supply is switched on.
Always follow the safety rules:

• Switch off and isolate

• Secure against reclosing

• Ensure that the device is no longer live

• Cover adjacent live parts

EZ is installed in the following order:

• If necessary connect devices together

• Mounting

• Wiring up the inputs

• Wiring up the outputs

• Connecting the power supply

Mounting Install EZ in a control cabinet, service distribution board or in

an enclosure so that the power feed and terminal connections
cannot be touched accidentally during operation.

Clip EZ onto a DIN EN 50022 top-hat rail or fix EZ in place
using fixing brackets. EZ can be mounted vertically or
horizontally.

J

For more information visit: www.EatonElectrical.com 29MN05013003E

When using EZ with expansion units, connect the
expansion concerned before mounting (

J page 32).

Installation

For ease of wiring, leave a gap of at least 30 mm between EZ
terminals and the wall or adjacent devices.

30

30

30

1

Figure 1: Clearances to EZ

30

Mounting on top-hat rail

XHook EZ to the top edge of the top-hat rail and hinge into

place while pressing down slightly. Press the device lightly
downwards and against the top-hat rail until it snaps over
the lower edge of the top-hat rail.

EZ will clip into place and will be secured by the built-in spring
mechanism.

XCheck that the device is seated firmly.
EZ is mounted vertically on a top-hat rail in the same way.

2

For more information visit: www.EatonElectrical.com

MN05013003E30

Using a mounting plate

Mounting on a mounting plate requires the use of fixing
brackets which are fixed to the back of EZ. The fixing brackets
are available as an accessory.

EZ700: Fasten each device with at least three fixing brackets.

EZ200-EZ: EZ500: EZ700:

Mounting

Figure 2: Using a mounting plate

For more information visit: www.EatonElectrical.comMN05013003E 31

Installation

Connecting the expansion device

1

2

4

3

Figure 3: Connecting expansion units

For more information visit: www.EatonElectrical.com

MN05013003E32

XOpen the EZ-LINK connections on the side of both EZ

devices.

XFit the EZ-LINK data connector EZ-LINK-DS in the opening

provided on the expansion device.

XPlug the devices together.
XProceed in the reverse order to dismantle the device.

Terminals Tools

Slot-head screwdriver, width 3.5 mm, tightening torque

0.6 Nm.

Cable cross-sections

• Solid: 0.2 to 4 mm

• Flexible with ferrule: 0.2 to 2.5 mm

Terminals

2

2

Connecting the power supply

J

For more information visit: www.EatonElectrical.comMN05013003E 33

The required connection data for device types, EZ-AB with
24 V AC, EZ-AC with standard voltages of 100 V AC, EZ­DA with 12 V DC and EZ-DC with 24 V DC are provided in
the section “Technical Data”, page 258.

The EZ500 and EZ700 basic units run a system test for two
seconds after the power supply has been switched on.
Either RUN or STOP mode will be activated after these two
seconds, depending on the default setting.

Cable protection

Connect on EZ cable protection (F1) rated for at least 1 A
(slow).

Installation

Supplying AC units
Supplying AC basic units

EZ…-AB-RC(RCX), EZ…-AC-R(RC, RCX)

L

N

F1

NNL

Figure 4: Power supply on the AC basic units

Supplying AC expansion units

EZ…-AC-.E

L

N

F1

E+

R1

E-

...

R12

Figure 5: Power supply on the AC expansion units

For more information visit: www.EatonElectrical.com

NNL

MN05013003E34

Connecting the power supply

Applies to EZ-AC devices with a power supply greater
than 24 V AC:

• The voltage terminals for phase L and neutral conductor
N have been reversed.

• This enables the EZ interface (for memory card or PC
connection) to have the full connection voltage of the
phase conductor (100 to 240 V AC).

• There is a danger of electric shock if the connection at the
EZ interface is not properly connected or if conductive
objects are inserted into the socket.

Attention!

A short current surge will be produced when switching on
for the first time. Do not switch on EZ by means of reed
contacts since these may burn or melt.

Supplying DC units
Supplying DC basic units

EZ…-DA-RC(X), EZ…-DC-R(RC,RCX)

L01

⫹

L01⫺

F1

+...V

DC : +24 V

DA : +12 V

Figure 6: Power supply on the DC basic units

For more information visit: www.EatonElectrical.comMN05013003E 35

0 V0 V

Installation

Supplying DC expansion units
EZ…-DC-.E

L01+

L01-

F1

R1

E-

E+

Figure 7: Power supply on the DC expansion units

J

J

EZ-DC and EZ-DA are protected against reverse polarity.
To ensure that EZ works correctly, ensure that the polarity
of each terminal is correct.

Cable protection

Connect on EZ a cable protection (F1) rated for at least 1A
(slow).

When EZ is switched on for the first time, its power supply
circuit behaves like a capacitor. Use an appropriate device
for switching on the power supply and do not use any reed
relay contacts or proximity switches.

...

R12

24 V

0V0V24V

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MN05013003E36

Connecting the inputs

Connecting the inputs EZ inputs switch electronically. Once you have connected a

contact via an input terminal, you can reuse it as a contact in
your EZ circuit diagram as often as you like.

L

+24 V

S1

N

0 V

Figure 8: Connecting the inputs

I1

I1 i1

Connect to the EZ input terminals contacts such as
pushbuttons, switches, relay or contactor contacts, proximity
switches (three-wire).

Connecting EZ AC digital inputs

Caution!

Connect the inputs for AC devices in compliance with the
safety regulations of the VDE, IEC, UL and CSA. Use the
same phase conductor for the input power feed, otherwise
EZ will not detect the switching level and may be damaged
or destroyed by overvoltage.

For more information visit: www.EatonElectrical.comMN05013003E 37

Installation

Connecting EZ AC digital inputs on the basic unit

L

N

F1

LNN

l1 I2 I7

Figure 9: Connecting EZ-AC and EZ-AB digital inputs

Connecting AC digital inputs on the expansion device

L

N

F1

R10R9R8R7R6R5R4R3R2R1E+ E-

R11

R12 NNL

Figure 10: Connecting EZ...-AC-E digital inputs

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MN05013003E38

Connecting the inputs

Table 1: EZ-AB input signal values

Input signal voltage range Input current
OFF signal ON signal

EZ500/
EZ700

EZ700 I9, I10

EZ500/
EZ700

EZ700 I9 to I12
EZ600 R1 to

I1 to I6 0 to 6 V AC 14 to 26.4 V AC 4 mA at 24 V AC
I7, I8 greater than 7 V AC

I11, I12

I1 to I6 0 to 40 V 79 to 264 V 0.5 mA at 230 V AC/0.25

I7, I8

R12

2 mA with 24 V AC and

or greater than

9.5 V DC
14 to 26.4 V AC 4 mA at 24 V AC
greater than 7 V AC

or greater than

9.5 V DC

Table 2: EZ-AC input signals

Input signal voltage range Input current
OFF signal ON signal

24 V DC

2 mA with 24 V AC and
24 V DC

mA at 115 V AC
6 mA at 230 V AC/4 mA

at 115 V

0.5 mA at 230 V AC/0.25
mA at 115 V AC

Cable lengths

Severe interference can cause a “1” signal on the inputs
without a proper signal being applied. Observe therefore the
following maximum cable lengths:

I1 to I6 40 m without additional circuit
I7, I8 100 m without additional circuit
I9 to I12 40 m without additional circuit
R1 to R12

For more information visit: www.EatonElectrical.comMN05013003E 39

Installation

For longer lengths connect in series a diode (e.g. 1N4007) for
1 A, min. 1000 V reverse voltage, to the EZ input. Ensure that
the diode is pointing towards the input as shown in the circuit
diagram, otherwise EZ will not detect the 1 state.

L

N

F1

LNN

Figure 11: AC input with suppression diode for EZ-AC and EZ-AB

I1

EZ-AC:
Inputs I7 and I8 have a higher input current on the EZ-AC.
Neon bulbs with a maximum residual current of 2 mA/1 mA at
230 V/115 V can be connected to I7 and I8.

Always use neon bulbs that are operated with a separate N

J

connection.

Caution!

Do not use reed relay contacts at I7, I8. These may burn or
melt due to the high inrush current of I7, I8.

Two-wire proximity switches have a residual current with the
“0” state. If this residual current is too high, the EZ input may
only detect a “1” signal.

Therefore, use inputs I7 and I8. An additional input circuit is
required if more inputs are used.

For more information visit: www.EatonElectrical.com

MN05013003E40

Connecting the inputs

Increasing the input current

The following input circuit can be used in order to prevent
interference and also when using two-wire proximity switches:

L

N

F1

100 nF/275 V h

LNN

I1

Figure 12: Increasing the input current

When using a 100 nF capacitor the drop-off time of the input

J

increases by 80 (66.6) ms at 50 (60) Hz.

A resistor can be connected in series with the circuit shown in
order to restrict the inrush current.

L

N

F1

100 nF/275 V h

1 kO

LNN

Figure 13: Limitation of the input current with a resistor

I1

For more information visit: www.EatonElectrical.comMN05013003E 41

Installation

Complete devices for increasing the input current are
available under the type reference EZ256-HCI.

L

N

F1

LNN

Figure 14: EZ with EZ256-HCI

I1

The increased capacitance increases the drop-off time by

J

approx. 40 ms.

Connecting EZ DC digital inputs

Use input terminals I1 to I12, R1 to R12 to connect pushbutton
actuators, switches or 3 or 4-wire proximity switches. Given
the high residual current, do not use 2-wire proximity
switches.

1N

For more information visit: www.EatonElectrical.com

MN05013003E42

Connecting the inputs

Connecting DC digital inputs on the basic unit

L01⫹

L01⫺

F1

0 V l1 I2 I7

+...V

DC : +24 V

DA : +12 V

Figure 15: Connecting EZ-DC, EZ-DA digital inputs

Connecting DC digital inputs on the expansion device

+24 V

0V

F1

R10R9R8R7R6R5R4R3R2R1E+ E-

R11

R12 0V0V+24V

Input 24 V 24 V

EZ…-DC-.D

Figure 16: Connecting EZ...-DC-E digital inputs

For more information visit: www.EatonElectrical.comMN05013003E 43

Installation

Table 3: EZ-DC input signals

Input signal voltage range Input current
OFF signal ON signal

EZ500/
EZ700

EZ700 I9, I10

EZ600 R1 to

EZ500/
EZ700

EZ700 I9, I10

I1 to I6 0 to 5 V 15 to 28.8 V 3.3 mA at 24 V DC
I7, I8 greater than 8 V DC 2.2 mA at 24 V

I11, I12

R12

I1 to I6 0 to 4 V DC 8 to 15.6 V DC 3.3 mA at 12 V
I7, I8

I11, I12

15 to 28.8 V 3.3 mA at 24 V DC
greater than 8 V DC 2.2 mA at 24 V
15 to 28.8 V 3.3 mA at 24 V DC

Table 4: EZ-DA input signals

Input signal voltage range Input current
OFF signal ON signal

1.1 mA at 12 V

3.3 mA at 12 V

1.1 mA at 12 V

Connecting EZ DC analog inputs

The EZ-AB, EZ-DA and EZ-DC basic units are provided with
analog inputs. Inputs I7 and I8, and if present I11 and I12, can
be used to connect analog voltages ranging from 0V to 10 V.
A simple additional circuit also allows the analog evaluation of
currents from 0 to 20 mA. The analog input signals are
converted to 10-bit digital signals.

The following applies:

• 0 V DC corresponds to a digital 0.

• 5 V DC corresponds to a digital value of 512.

• 10 V DC corresponds to a digital value of 1023.

For more information visit: www.EatonElectrical.com

MN05013003E44

Connecting the inputs

Caution!

Analog signals are more sensitive to interference than
digital signals. Consequently, greater care must be taken
when laying and connecting the signal lines.

Incorrect switching states may occur if they are not
connected correctly.

Safety measures with analog signals

XUse shielded twisted pair cables to prevent interference

with the analog signals.

XFor short cable lengths, ground the shield at both ends

using a large contact area. If the cable length exceeds 30 m
or so, grounding at both ends can result in equalization
currents between the two grounding points and thus in the
interference of analog signals. In this case, only ground the
cable at one end.

XDo not lay signal lines parallel to power cables.
XConnect inductive loads to be switched via the EZ outputs

to a separate power feed, or use a suppressor circuit for
motors and valves. If loads such as motors, solenoid valves
or contactors are operated with EZ via the same power
feed, switching may result in interference on the analog
input signals.

The following four circuits contain examples of applications for
analog value processing.

Caution!

Ensure that the reference potential is connected. Connect
the 0 V of the power supply unit for the different setpoint
potentiometers and sensors shown in the examples to the
0 V and neutral conductor terminal (EZ-AB) of the EZ power
feed. Otherwise incorrect switching states may occur if they
are not connected correctly.

For more information visit: www.EatonElectrical.comMN05013003E 45

Installation

Power supply of EZ-AB devices and analog inputs

With EZ-AB devices that process analog signals, the device
must be fed via a transformer so that the device is isolated
from the mains supply. The neutral conductor and the
reference potential of the DC power feed of analog sensors
must be electrically connected.

J

monitored by a ground fault monitoring device. Observe the
requirements of the relevant regulations.

Ensure that the common reference potential is grounded or

L1

N

~

+12 V

0 V

F1

Figure 17: EZ-AB analog input, connection of reference potentials

L01h

N01 h

NI1N

I8

I7L

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MN05013003E46

Connecting the inputs

Analog setpoint potentiometer, EZ-AB, EZ-DA, EZ-DC

F1

0 V

0 V

L

N

N

~

0 V

I7+...V

Figure 18: Analog setpoint potentiometer with own power feed

Use a potentiometer with a resistance of  1kΩ, e.g. 1 kΩ,

0.25 W.

EZ-DC analog setpoint potentiometer

L01⫹

L01⫺

F1

0 V 0 V I7

+...V

DC : +24 V

DA : +12 V

1.3 kO/0.25 W

1 kO/0.25 W

+12 V

Figure 19: Analog setpoint potentiometer with 24 V DC power feed

For more information visit: www.EatonElectrical.comMN05013003E 47

Installation

Brightness sensor, EZ-AB, EZ-DA, EZ-DC

12 V

F1

0 V

0 V

L

N

N

0...10 V

0 V

I7+...V

Figure 20: Connection of a brightness sensor, analog input

Temperature sensor, EZ-DA, EZ-DC

+24 V

–0 V

Out

F1

0 V

0 V

L

N

N

0...10 V

I7+...V

~

0 V

+12 V

–35...55 ˚C

Figure 21: Connection of the temperature sensor, analog input

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MN05013003E48

Connecting the inputs

20 mA sensor

4 to 20 mA (0 to 20 mA) sensors can be connected easily
without any problem using an external 500 Ω resistor.

L01⫹

L01⫺

햲

F1

4...20 mA

500

0 V0 V

DC : +24 V

DA : +12 V

I7+...V

Figure 22: Connection 0 (4) to 20 mA sensor output, analog input

Analog sensor
The following values apply:

• 4 mA = 1.9 V

• 10 mA = 4.8 V

• 20 mA = 9.5 V
(Based on U = R × I = 478 Ω × 10 mA ~ 4.8 V).

Connecting high-speed counters and frequency generators

High-speed counter signals and frequencies on the EZ-DA
and EZ-DC can be counted accurately on inputs I1 to I4
independently of the cycle time. These inputs are permanently
assigned to counters.

The following applies:

• I1 = C13 high-speed up/down counter

• I2 = C14 high-speed up/down counter

For more information visit: www.EatonElectrical.comMN05013003E 49

Installation

• I3 = C15 frequency counter

• I4 = C16 frequency counter
Pulse shape of count signals:

EZ processes square wave signals.
Mark-to-space ratio of count signals:

We recommend a mark-to-space ratio of 1:1.
If this is not the case:

The minimum pulse or pause duration is 0.5 ms.

t

= 0.5 × (1/f

min

t

= minimum time of the pulse or pause duration

min

f

= maximum count frequency (1 kHz)

max

L01 +

L01 –

F1

max

)

L02 +

...V

0 V

24 V H

0 V

I1

I2 I3

I4 I5

Figure 23: Connecting high-speed counters and frequency

generators

For more information visit: www.EatonElectrical.com

I6

MN05013003E50

Connecting the outputs

J

Connecting the outputs The Q outputs function inside EZ as isolated contacts.

Inputs that are used as high-speed counter inputs should
not be used in the circuit diagram as contacts. If the counter
frequency is high:

Not all the signals of the high-speed counter can be
monitored for processing in the circuit diagram. EZ will only
process a randomly logged state.

Q1

12

Figure 24: Output Q

The associated relay coils are controlled in the EZ circuit
diagram via the following outputs.

• Q1 to Q4 and Q1 to Q8 (Q6), basic units

• S1 to S8 (S6), expansion devices
You can use the signal states of the outputs as make or break

contacts in the EZ circuit diagram to provide additional
switching conditions.

The relay or transistor outputs are used to switch loads such
as fluorescent tubes, filament bulbs, contactors, relays or
motors. Check the technical thresholds and data of the
outputs before installation (
page 258).

For more information visit: www.EatonElectrical.comMN05013003E 51

J section “Technical Data”,

Installation

Connecting relay outputs
EZ512-..-R..

10 000 000

0 V H, N

F

8 A/B 16

L1, L2, L3 (115/230 V h)

+ 24 V H

1

2

2

1

10 000 000

0 V H, N

F 8 A/B 16

L1, L2, L3 (115/230 V h)
+ 24 V H

Q1

Q3 Q4

Q2

Figure 25: EZ512-..-R.. relay outputs

EZ7..-..-R.. and EZ202-RE

12 2 2 2 2 2

Q1

Q2

1

1

1

1

Q6Q5Q4Q3

1

2

2

1

1

0 V H, N

F 8 A/B 16

L1, L2, L3 (115/230 V
+ 24 V H

24 V H 8 A
115 V h 8 A
230 V h 8 A

10 x 58 W

10 000 000

R

1000 W

h

L

2 A
2 A
2 A

25 000

12 2

S1

)

1

S2

Figure 26: EZ7..-..-R.. relay outputs and EZ202-RE

For more information visit: www.EatonElectrical.com

MN05013003E52

10 000 000

0 V H, N

F

8 A/B 16

L1, L2, L3 (115/230 V h)
+ 24 V H

EZ618-..-RE

12 2 2 2 2 2

S1

S2

1

1

Figure 27: EZ618-..-RE.. relay outputs

1

1

S6S5S4S3

Unlike the inputs, the outputs can be connected to different
phases.

Warning!

Do not exceed the maximum voltage of 250 V AC on a relay
contact.

Connecting the outputs

1

R

8A

24 V H
115 V h 8A
230 V h 8 A

1000 W

10 x 58 W

2A
2A
2A

25 000

If the voltage exceeds this threshold, flashover may occur
at the contact, resulting in damage to the device or a
connected load.

For more information visit: www.EatonElectrical.comMN05013003E 53

Installation

Connecting transistor outputs
EZ512-..-T..

0 V Q1 Q2 Q3 Q4

+24 V

Q

Q

F10 A

0 V H

R

f 2.5 A
+ 24 V H

20.4 – 28.8 V H

24 V

0.5 A

5 W/24 V

Figure 28: EZ512-..-T.. transistor outputs

EZ7..-..-T..

+24 V 0 V Q1 Q2 Q3Q4Q5Q6Q7

Q

Q

F10 A

0 V H

f 2.5 A

+ 24 V H

(20.4 – 28.8 V H)

24 V H

Figure 29: EZ7..-..-T.. transistor outputs

R

0.5 A

L

0.5 A

Q8

0.5 A

5 W/24 V

For more information visit: www.EatonElectrical.com

MN05013003E54

EZ620-..-TE

Connecting the outputs

S1 S2 S3 S4 S5 S6 S7 S8 +24 V

0 V H

R

+ 24 V H

(20.4 – 28.8 V H)

24 V H

0.5 A

0.5 A

5 W/24 V

f 2.5 A

Figure 30: EZ620-..-TE transistor outputs

Parallel connection:
Up to four outputs can be connected in parallel in order to
increase the power. The output current will increase in this
case to a maximum of 2 A.

Caution!

Outputs may only be connected in parallel within a group
(Q1 to Q4 or Q5 to Q8, S1 to S4 or S5 to S8), such as Q1
and Q3 or Q5, Q7 and Q8. Outputs connected in parallel
must be switched at the same time.

0V

Q

Q

F10 A

Caution!

Please note the following when switching off inductive
loads.

Suppressed inductive loads cause less interference in the
entire electrical system. For optimum suppression the
suppressor circuits are best connected directly to the
inductive load.

For more information visit: www.EatonElectrical.comMN05013003E 55

Installation

If inductive loads are not suppressed, the following applies:
Several inductive loads should not be switched off
simultaneously to avoid overheating the driver blocks in the
worst possible case. If in the event of an emergency stop the
+24 V DC power supply is to be switched off by means of a
contact, and if this would mean switching off more than one
controlled output with an inductive load, then you must
provide suppressor circuits for these loads (see the following
diagrams).

+ 24 V H

0 V H

U

emax

< Uz < 33 V

Q..

0 V H

Q..

Figure 31: Inductive load with suppressor circuit

Behavior with short-circuit/overload

Should a short circuit or overload occur on a transistor output,
this output will switch off. The output will switch on up to
maximum temperature after the cooling time has elapsed.
This time depends on the ambient temperature and the
current involved. If the fault condition persists, the output will
keep switching off and on until the fault is corrected or until the
power supply is switched off (

J section “Monitoring of short-

circuit/overload with EZ..-D.-T..”, page 238).

For more information visit: www.EatonElectrical.com

MN05013003E56

Expanding inputs/outputs

Expanding inputs/outputs You can add expansion units to the following EZ models in

order to increase the number of inputs and outputs:

Expandable EZ
basic units

EZ7..-..-R..
EZ7..-..-T..

Expansion units

EZ618-..-RE 115/230 V AC power supply

• 12 AC inputs,

• 6 relay outputs
24 V DC power supply

• 12 DC inputs,

• 6 relay outputs

EZ620-..-TE • 12 DC inputs,

• 8 transistor outputs
EZ202-RE 2 relay outputs
Special expansion units

see current catalog

Local expansion

Local expansion units are connected directly next to the basic
unit.

XConnect the EZ expansion unit via the EZ-LINK connection.

EZ-LINK

EZ719-…
EZ721-…

Figure 32: Connecting local expansion with EZ

For more information visit: www.EatonElectrical.comMN05013003E 57

EZ6…-TE
EZ6…-RE
EZ200-EZ

Installation

Warning!

The following electrical isolation is implemented between
the EZ7..-..-.C. basic unit and the expansion device
(isolation always in local connection of expansion unit)

• Basic isolation 400 V AC (+10 %)

• Safe isolation 240 V AC (+10 %)
Units may be destroyed if the value 400 V AC +10 % is

exceeded, and may cause the malfunction of the entire
system or machine!

J

Basic unit and expansion unit can be provided with different
DC power supplies.

Remote expansion

Remote expansion units can be installed and run up to 30 m
away from the basic unit.

Warning!

The two-wire or multi-core cable between units must have
the necessary insulation voltage required for the installation
environment concerned. In the event of a fault (ground
leakage, short-circuit) serious damage or injury to persons
may otherwise occur.

A cable such as NYM-0 with a rated operational voltage of
U

= 300/500 V AC is normally sufficient.

e

For more information visit: www.EatonElectrical.com

MN05013003E58

Expanding inputs/outputs

E+ E–

EZ719-…
EZ721-…

EZ6…-RE
EZ6…-TE

EZ200-EZ

E+ E–

= 300/500 V

U

e

EZ…-AC-…E

Figure 33: Connecting remote expansion units to EZ

J

Terminals E+ and E- of the EZ200-EZ are protected against
short-circuits and polarity reversal.
Functionality is only ensured if “E+” is connected with “E+”
and “E-” with “E-”.

For more information visit: www.EatonElectrical.comMN05013003E 59

Installation

Connecting bus systems The EZ-LINK connection is designed to allow bus

connections, apart from I/O expansions. Special bus
connection devices are available for the bus systems in use.

J

J

Only one device (expansion device or bus connection) can
be connected to the EZ-LINK connection.

At present, EZ700 can communicate with the following bus
systems or networks:

• AS-Interface (Actuator-Sensor Interface)

• PROFIBUS-DP

• CANopen

• DeviceNet
The different bus systems offer different functions.

The following applies:

• As a minimum data exchange, the input data R1 to R16 and
output data S1 to S8 can be exchanged, provided that the
bus system supports this.

• If the bus system or bus gateway is capable of this, function
block, date, time parameters can be read and written via the
bus. The states of inputs, outputs, markers can be read.

The range and the functions of the bus gateways are being
continually further developed.

The current Eaton product line catalog and the Internet
online catalog contain those bus gateways that are
currently available.

For more information visit: www.EatonElectrical.com

MN05013003E60

Switching on

3 Commissioning

Switching on Before switching on EZ, check that you have connected the

power supply terminals and inputs correctly:

• 24 V AC model EZ-AB
– Terminal L: Phase conductor L
– Terminal N: Neutral conductor N
– Terminals I1 to I12:

Actuation via same phase conductor L

• 230 V AC model EZ-AC
– Terminal L: Phase conductor L
– Terminal N: Neutral conductor N
– Terminals I1 to I12, R1 to R12:

Actuation via phase conductor L

• 12 V DC model
– Terminal +12 V: Voltage +12 V
– Terminal 0 V: 0 V voltage
– Terminals I1 to I12:

Actuation via same +12V

• 24 V DC model
– Terminal +24 V: +24 V voltage
– Terminal 0 V: 0 V voltage
– Terminals I1 to I12, R1 to R12:

Actuation via the same +24 V

If you have already integrated EZ into a system, secure any
parts of the system connected to the working area to prevent
access and ensure that no-one can be injured if, for example,
motors start up unexpectedly.

For more information visit: www.EatonElectrical.comMN05013003E 61

Commissioning

Setting the menu language When you switch on EZ for the first time, you will be asked to

select the menu language.

ENGLISH å

DEUTSCH
FRANCAIS
ESPANOL

J

XUse the cursor buttons

required.
– English
–German
– French
– Spanish
–Italian
– Portuguese
–Dutch
– Swedish
– Polish
–Turkish
–Czech
– Hungarian

XPress OK to confirm your choice and press ESC to exit the

menu.

EZ will then switch to the Status display.

You can change the language setting at a later time
(

J section “Changing the menu language”, page 205).

If you do not set the language, EZ will display this menu and
wait for you to select a language every time you switch on.

Í or Ú to select the language

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MN05013003E62

EZ operating modes

EZ operating modes EZ has two operating modes - RUN and STOP.

In RUN mode EZ continuously processes a stored circuit
diagram until you select STOP or disconnect the power. The
circuit diagram, parameters and the EZ settings are retained
in the event of a power failure. All you will have to do is reset
the real-time clock after the back-up time has elapsed. Circuit
diagram entry is only possible in STOP mode.

Caution!

In RUN mode EZ will immediately run the saved circuit
diagram in the unit when the power supply is switched on.
This will happen unless STOP mode was set as startup
mode. In RUN mode outputs are activated according to the
switch logic of the circuit diagram.

When a memory card with a circuit diagram is fitted in an EZ
model with an LCD display, this circuit diagram will not start
automatically if there is circuit diagram in the device. The
circuit diagram must first be transferred from the memory card
to the EZ unit.

In RUN mode EZ-X models load the circuit diagram on the
memory card automatically and run it immediately.

For more information visit: www.EatonElectrical.comMN05013003E 63

Commissioning

Creating your first circuit diagram

The following small circuit diagram takes you step by step
through wiring up your first EZ circuit diagram. In this way you
will learn all the rules, quickly enabling you to use EZ for your
own projects.

As with conventional wiring, you use contacts and relays in
the EZ circuit diagram. With EZ, however, you no longer have
to connect up components individually. At the push of a few
buttons, the EZ circuit diagram produces all the wiring. All you
have to do is then connect any switches, sensors, lamps or
contactors you wish to use.

L01+

F1

S1

S2

K1

K1

L01-

H1

Figure 1: Lamp controller with relays

In the following example, EZ carries out all the wiring and
performs the tasks of the circuit diagram shown below.

For more information visit: www.EatonElectrical.com

MN05013003E64

L01+
L01-

Creating your first circuit diagram

F1

S1 S2

I1

0V

+24V

1

Q1

2

I2

...........

I
MO 02:00

.......STOP

J

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H1

L01-

Figure 2: Lamp controller with EZ

Starting point: the Status display

When you switch on EZ, it opens the Status display
immediately to show the switching state of the inputs and
outputs. It also indicates whether EZ is already running a
circuit diagram.

The examples were written without the use of expansion
units. If an expansion unit is connected, the Status display
will first show the status of the basic unit and then the status
of the expansion unit before showing the first selection
menu.

Commissioning

PROGRAM...

STOP å RUN
PARAMETER
INFO

Press OK to switch to the next menu level, and press ESC to
move one level back.

OK has two other functions:

J

•Press OK to save modified settings.

• In the circuit diagram, you can also press OK to insert
and modify contacts and relay coils.

In this case EZ must be in STOP mode.
XPress OK 2 × to enter the circuit diagram display via menu

items PROGRAM… J PROGRAM. This is where you will
create the circuit diagram.

Circuit diagram display

XPress OK to switch to the main menu.

Â

The circuit diagram display is currently empty. The cursor
flashes at the top left, which is where you will start to wire your
circuit diagram. EZ will automatically propose the first contact

I1.

M

êê êê êê êêê

lLm

êê êê êê êêê
êê êê êê êêê
êê êê êê êêê

I1-I2----ÄQ1

For more information visit: www.EatonElectrical.com

Use the ÍÚ

úí cursor buttons to move the cursor over the

invisible circuit diagram grid.
The first three double columns are the contact fields and the

right-hand columns form the coil field. Each line is a rung. EZ
automatically energizes the first contact to voltage.

XNow try to wire up the following EZ circuit diagram.

Switches S1 and S2 are at the input.
contacts for the input terminals. Relay K1 is represented by
the relay coil

ÄQ1. The symbol Ä identifies the coil's function,

in this case a relay coil acting as a contactor.
to eight EZ output relays in the basic unit.

I1 and I2 are the

Q1 is one of up

MN05013003E66

Creating your first circuit diagram

From the first contact to the output coil

With EZ, you work from the input to the output. The first input
contact is

XPress OK.

I1.

I1 êê êê êêê

I1 I1 êê êêê

J

I1-I2 Â

EZ inserts the first contact
XThe

I flashes and can be changed, for example, to a P for

I1 at the cursor position.

a button input by using the cursor buttons Í or Ú.
However, nothing needs to be changed at this point.

XPress OK 2 ×, to move the cursor across the

1 to the

second contact field.

You could also move the cursor to the next contact field using
the cursor button

í.

XPress OK.
Again, EZ creates a contact

the contact number to

I1 at the cursor position. Change

I2 so that break contact S2 can be

connected to input terminal I2.
XPress OK so that the cursor jumps to the next position and

use cursor buttons Í or Ú to change the number to

2.

Press DEL to delete a contact at the cursor position.

XPress OK to move the cursor to the third contact field.
You do not need a third switch contact, so you can now wire

the contacts directly to the coil field.

For more information visit: www.EatonElectrical.comMN05013003E 67

Commissioning

Wiring

EZ displays a small arrow in the circuit diagram for creating
the wiring.

Press ALT to activate the arrow and press the cursor buttons

ÍÚ

úí to move it.

J

M

êê êê êêê

l

lLm

êê êêê

J

I1-I2l
êê êê êê êêê
êê êê êê êêê
êê êê êê êêê

ALT also has two other functions depending on the cursor
position:

• From the left contact field, press ALT to insert a new,
empty rung.

• The contact under the cursor can be changed between a
make and break contact by pressing the ALT button.

The wiring arrow works between contacts and relays. When
you move the arrow onto a contact or relay coil, it changes
back to the cursor and can be reactivated if required.

EZ automatically wires adjacent contacts in a rung up to the
coil.

XPress ALT to wire the cursor from

field.

The cursor changes into a flashing wiring arrow and
automatically jumps to the next logical wiring position.

XPress the cursor button

to the coil field.

í. Contact I2 will be connected up

I2 through to the coil

J

For more information visit: www.EatonElectrical.com

You can use the DEL button to erase a connection at the
cursor or arrow position. Where connections intersect, the
vertical connections are deleted first, then, if you press DEL
again, the horizontal connections are deleted.

XPress the cursor button
The cursor will move to the coil field.

í once more.

MN05013003E68

Creating your first circuit diagram

I1-I2----ÄQ1

I1-I2----ÄQ1

SAVE

CANCEL

J

XPress OK.

EZ will insert relay coil
the output relay
changed.

Your first working EZ circuit diagram now looks like this:
Press ESC to leave the circuit diagram display.

The menu shown appears.
XPress OK.

The circuit diagram is now automatically saved. CANCEL
exits the circuit diagram. Changes that have been made to the
circuit diagram are not saved.

EZ saves all the necessary circuit diagram and program
data retentively in the internal data memory.

Once you have connected buttons S1 and S2, you can test
your circuit diagram straight away.

Q1. The specified coil function Ä and

Q1 are correct and do not have to be

PROGRAM....Æ

STOP å RUN

PARAMETER..
INFO... æ

J

For more information visit: www.EatonElectrical.comMN05013003E 69

Testing the circuit diagram

XSwitch with ESC to the main menu and select the

menu option.

RUN

With

STOP RUN å and STOP å RUN you switch to

the RUN or STOP operating modes.
EZ is in RUN mode if the tick is present at the corresponding

menu item. i.e.

The tick next to a menu item indicates which operating
mode or function is currently active.

STOP RUN å.

STOP å

Commissioning

PROGRAM....Æ

STOP RUN å

PARAMETER..
INFO... æ

12..........

I
MO 02:00

1....... RUN

I1-I2----ÄQ1

I1-I2----ÄQ1

XPress OK.
The tick changes to STOP RUN

å

The Status display shows the current mode and the switching
states of the inputs and outputs.

XChange to the Status display by pressing ESC and press

pushbutton actuator S1.

The contacts for inputs I1 and I2 are activated and relay Q1
picks up.

Power flow display

EZ allows you to check rungs in RUN mode. This means that
you can check your circuit diagram via the built-in power flow
display while it is being processed by EZ.

XSwitch to the circuit diagram display (confirm

PROGRAM

menu with OK) and actuate pushbutton S1.

The relay picks up and EZ displays the power flow.

XPress pushbutton actuator S2, that has been connected as

a break contact.

The rung is interrupted and relay Q1 drops out.
Press ESC to return to the Status display.

A circuit diagram does not have to be completed before you

J

can test parts of it with EZ.
EZ simply ignores any incomplete wiring that is not yet

working and only uses the finished wiring.

For more information visit: www.EatonElectrical.com

MN05013003E70

Creating your first circuit diagram

Deleting the circuit diagram

XSwitch EZ to STOP mode.

J

PROGRAM

DELETE PROG

The display shows

EZ must be in STOP mode in order to extend, delete or
modify the circuit diagram.

PROGRAM... to switch from the main menu to the

XUse

next menu level.

XSelect
EZ will display the prompt DELETE?

XPress OK to delete the program or ESC to cancel.
Press ESC to return to the Status display.

Fast circuit diagram entry

You can create a circuit diagram in several ways. The first
option is to enter the elements in the circuit and then to wire
all the elements together. The other option is to use the
enhanced operator guidance of EZ and create the circuit
diagram in one go, from the first contact through to the last
coil.

If you use the first option, you will have to select some of the
elements in order to create and connect up your circuit
diagram.

DELETE PROGRAM

STOP å RUN.

The second, faster option is what you learned in the example.
In this case you create the entire rung from left to right.

For more information visit: www.EatonElectrical.comMN05013003E 71

4 Wiring with EZ

By working through the example in chapter 3 you should now
have gained an initial impression of just how simple it is to
create a circuit diagram in EZ. This chapter describes the full
range of EZ functions and provides further examples of how
to use EZ.

Operation of EZ Buttons for editing circuit diagrams and function relays

Delete rung, contact, relay or empty rung in the circuit diagram

Toggle between break and make contact
Connect contacts, relays and rungs
Add rungs

ÍÚ

Change value
Move cursor up and down
Change position

úí

Move cursor to left and right

Cursor buttons set as P buttons:

ú

Input P1,

í

Input P3,

Undo setting since previous OK
Exit current display or menu

Change, add contact/relay
Save setting

Í
Ú

Input P2
Input P4

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Wiring with EZ

Operation

The cursor buttons in the EZ circuit diagram perform three
functions. The current mode is indicated by the appearance of
the flashing cursor.

•Move

• Enter

• Connect

â

I 1

l

J

In Move mode you can use
the circuit diagram in order to select a rung, contact or relay
coil.

Use OK to switch to Entry mode so that you can enter or
change a value at the current cursor position. If you press
ESC in Entry mode, EZ will undo the most recent changes.

Press ALT to switch to Connect mode for wiring contacts and
relays. Press ALT again to return to Move.

Press ESC to leave the circuit diagram and parameter display.

EZ performs many of these cursor movements
automatically. For example, EZ switches the cursor to Move
mode if no further entries or connections are possible at the
selected cursor position.

Opening the parameter display for function relays with
contacts or coils

If you specify the contact or coil of a function relay in Entry
mode, EZ automatically switches from the contact number to
the function relay parameter display when you press OK.

Press

í to switch to the next contact or coil field without

entering any parameters.

ÍÚ úí to move the cursor around

Program

A program is a sequence of commands which EZ executes
cyclically in RUN mode. An EZ program consists of the
necessary settings for the device, password, system settings,
a circuit diagram and/or function relays.

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MN05013003E74

Operation of EZ

Circuit diagram

The circuit diagram is that part of the program where the
contacts are connected together. In RUN mode a coil is
switched on and off in accordance with the current flow and
the coil function specified.

Function relays

Function relays are program elements with special functions.
Example: timing relays, time switches, counters. Function
relays are elements provided with or without contacts and
coils as required. In RUN mode the function relays are
processed according to the circuit diagram and the results are
updated accordingly.

Examples:
Timing relay = function relay with contacts and coils
Time switch = function relay with contacts

Relay

Relays are switching devices which are electronically
simulated in EZ. They actuate their contacts according to their
designated function. A relay consists of at least a coil and a
contact.

Contacts

You modify the current flow with the contacts in the EZ circuit
diagram. Contacts such as make contacts carry a 1 signal
when closed and 0 when open. Every contact in the EZ circuit
diagram can be defined as either a make contact or a break
contact.

For more information visit: www.EatonElectrical.comMN05013003E 75

Wiring with EZ

Coils

Coils are the actuating mechanisms of relays. In RUN mode,
the results of the wiring are sent to the coils, which switch on
or off accordingly. Coils can have seven different coil
functions.

Table 5: Usable contacts

Contact

EZ representation

Make contact
Open in the rest state

Break contact
Closed in the rest state

EZ works with different contacts, which can be used in any
order in the contact fields of the circuit diagram.

Table 6: Contacts

Contact type Make

contact

Analog value comparator function
relay

Counter function relay
Text marker function relay
7-day time switch function relay
EZ input terminal
0 signal
Expansion status
Short-circuit/overload
Marker (auxiliary relay)
Marker (auxiliary relay)
Operating hours counter
Cursor button
EZ output

A a

C c
D
Ö ö

I

M m
N N1…N16 N1…N16 89

O O1…O4 O1…O4 145
P p

Q q

Break
contact

D

i

N
O

I, Q, M, N, A, Ö, Y, C, T, O, P, :,
D, S, R, Z

i, q, m, , a, ö, , c, t, , p, ,

N Y O D

S R Z

, ,

EZ500 EZ700 Page

A1…A16 A1…A16 102

C1…C16 C1…C16 114
D1…D16 D1…D16 134
Ö1…Ö8 Ö1…Ö8 140
I1…I8 I1…I12 81
I13 I13

– I14 241

I16 I15…I16 241
M1…M16 M1…M16 89

P1…P4 P1…P4 87
Q1…Q4 Q1…Q8 81

For more information visit: www.EatonElectrical.com

MN05013003E76

Operation of EZ

Contact type

Expansion input terminal
Short-circuit/overload with

Make
contact

R
R

Break
contact

R
R

EZ500 EZ700 Page

– R1…R12 81
– R15…R16 241

expansion
EZ output

(expansion or S auxiliary marker)

S

S

S1…S8

(as

marker)
Timing function relay
Jump label
Year time switch
Master reset, (central reset)

T t
: – :1…:8 :1…:8 166

Y Y1…Y8 Y1…Y8 169
Z Z1…Z3 Z1…Z3 176

Y
Z

T1…T16 T1…T16 150

Relay, function relays

EZ has nine different types of relay for wiring in a circuit
diagram.

Relays EZ display EZ500 EZ700 Coil

function

Analog value comparator
function relays

Counter function relays
Text marker function relays
7-day time switch function

relays
Markers (auxiliary relay)
Markers (auxiliary relay)
Operating hours counters
EZ output relays
EZ output relay expansion,

auxiliary markers
Timer function relays

A

C
D
Ö

M
N N1…N16 N1…N16  –

O O1…O4 O1…O4  
Q

S

A1…A16 A1…A16 – 

C1…C16 C1…C16  
D1…D16 D1…D16  
Ö1…Ö4 Ö1…Ö4 – 

M1…M16 M1…M16  –

Q1…Q8 Q1…Q8  –
S1…S8

S1…S8  –

(as marker)

T

T1…T16 T1…T16  

S1…S8 89

Parame
ters

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Wiring with EZ

Relays

Conditional jump : :1…:8 :1…:8  –
Year time switch
Master reset, (central reset) Z Z1…Z3 Z1…Z3  –

EZ display EZ500 EZ700 Coil

function

Y Y1…Y8 Y1…Y8 – 

You can set the switching behavior of these relays by means
of the coil functions and parameters selected.

The options for setting output and marker relays are listed with
the description of each coil function.

The coil functions and parameters are listed with the
description of each function relay.

Circuit diagram display

In the EZ circuit diagram, contacts and coils are connected up
from left to right - from the contact to the coil. The circuit
diagram is created on a hidden wiring grid containing contact
fields, coil fields and rungs. It is then wired up with
connections.

• You can add switch contacts in the three contact fields. EZ
adds the first energized contact field automatically.

• You add the relay coil to be controlled together with its
function and designation in the coil field.

• Every line in the circuit diagram forms a rung. Up to 128
rungs can be wired in a circuit diagram.

Parame
ters

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MN05013003E78

Operation of EZ

Contact fields Coil field

I1-I2uT1-ÄQ1

Rungs/

Current paths

• Connections are used to produce the electrical contact
between switch contacts and the coils. They can be created
across several rungs. Each point of intersection is a
connection.

Q1-Ö1kêê êêê
êê êê êê êêê
êê êê êê êêê

Rungs

J

The circuit diagram display performs two functions:

• In STOP mode it is used to edit the circuit diagram.

• In RUN mode it is used to check the circuit diagram using

the Power flow display.

For more information visit: www.EatonElectrical.comMN05013003E 79

Wiring with EZ

Saving and loading circuit diagrams

There are two ways of saving circuit diagrams in EZ
externally:

• By saving to a memory card

• By saving to a PC running EZSoft.
Once they have been saved, programs can be reloaded into

EZ, edited and run.
All circuit diagram data is saved in EZ. In the event of a power

failure the data will be retained until the next time it is
overwritten or deleted.

Memory card

Each EZ-M-32K memory card contains a circuit diagram
which is inserted into the EZ interface. The program is stored
retentively on the memory card.

The way the memory card works and a description of how to
transfer a program to the card is given in section “Memory
card” on page 244.

Working with contacts and relays

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EZSoft

EZSoft is a PC program with which you can create, store, test
(simulate) and manage EZ circuit diagrams.

Completed circuit diagrams are transferred between your PC
and EZ via the connecting cable. Once you have transferred
a circuit diagram, simply run EZ straight from your PC.

Details on the program and transferring circuit diagrams are
given in section “EZSoft” from page 248.

In EZ circuit diagrams, the switches, buttons and relays of
conventional circuit diagrams are connected up using input
contacts and relay coils.

MN05013003E80

Working with contacts and relays

Conventional circuit EZ circuit diagram

EZ terminal

K1

S2

S1

K1

H1

Connect make contact S1 to input
terminal I2
Connect make contact S2 to EZ input
terminal I3
Connect load H1 to EZ output Q4
S1 or S2 switches on H1.

EZ circuit diagram

I2u------ÄQ4
I3k

Input and output contacts

First specify which input and output terminals you wish to use
in your circuit.

Depending on the type and configuration, EZ has 8, 12 or 24
input terminals and 4, 6, 8, 10 or 16 outputs. The signal states
on the input terminals are detected in the circuit diagram with
the input contacts I1 to I12. R1 to R12 are the input contacts
of the expansion. In the circuit diagram the outputs are
controlled via the corresponding output relay coils Q1 to Q8 or
S1 to S8 (expansion).

Contact name

Contact number

ÄQ4

Coil function

Relay name

Relay number

Entering and changing contacts and relay coils

A switch contact is selected in EZ via the contact name and

I2

contact number.

A relay coil is defined by its coil function, name and number.

For more information visit: www.EatonElectrical.comMN05013003E 81

Wiring with EZ

J

I1

J

A full list of all the contacts and relays is given in the
overview starting on page 76.

Values for contacts and coil fields are changed in Entry mode.
The value to be changed flashes.

If the field is empty, EZ will enter contact I1 or the coil

ÄQ1.

XMove the cursor using the buttons

coil field.

XPress OK to switch to Entry mode.
XUse

úí to select the position you wish to change, or press

OK to jump to the next position.

XUse ÍÚ to modify the value of the position.

úíÍÚ to a contact or

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MN05013003E82

Working with contacts and relays

Change

I1 to I2 in the

Change ÄQ1 to ÄQ8 in the coil field

contact field

I1 I1 I2ÄQ1ÄQ1ÄQ1 ÄQ8

Q

í or

OK

M3 è
N4 È
A5 ä
Ö. S
Y.
C. D.
T. S.
OZ1

P
:

D
S
R
Z

2 Í Å ú M

R

1
2

í or

OK

í or

OK

N3
C4
T5
O.
:.

2 Ú

2

í or

OK

EZ will leave Entry mode when you press úí or OK to leave
a contact field or coil field.

Deleting contacts and relay coils

XMove the cursor using the buttons

úíÍÚ to a contact or

coil field.

XPress DEL.
The contact or the relay coil will be deleted, together with any

connections.

Changing make contacts to break contacts

Every switch contact in the EZ circuit diagram can be defined
as either a make contact or a break contact.

For more information visit: www.EatonElectrical.comMN05013003E 83

Wiring with EZ

XSwitch to Entry mode and move the cursor over the contact

name.

XPress ALT. The make contact will change to a break

contact.

XPress OK 2

× to confirm the change.

I2u------ÄQ4
I3k

Figure 39: Changing contact I3 from make to break

Creating and modifying connections

l

Switch contacts and relay coils are connected with the wiring
arrow in Connect mode. EZ displays the cursor in this mode
as an arrow.

XUse

úíÍÚ to move the cursor onto the contact field or

coil field from which you wish to create a connection.

J

Do not position the cursor on the first contact field. At this
position the ALT button has a different function (Insert
rung).

XPress ALT to switch to Connect mode.
XUse

úí to move the diagonal arrow between the contact

fields and coil fields and ÍÚ to move between rungs.

XPress ALT to leave Connect mode.

I2u------ÄQ4
i3k

2 ×

I2u------ÄQ4
i3kê

EZ will leave the mode automatically when you move the
diagonal arrow onto a contact field or coil field which has
already been assigned.

J

For more information visit: www.EatonElectrical.com

In a rung, EZ automatically connects switch contacts and
the connection to the relay coil if there are no empty fields
in-between.

MN05013003E84

Working with contacts and relays

I1-Q4-i3o
z-----k
hI2-I4-ÄQ2

I1-Q4-i3-ÄM1
I2-I4-M1-ÄQ2

J

Never work backwards. You will learn why wiring backwards
does not work in section “Example: Do not wire backwards”
from page 233.

When wiring more than three contacts in series, use an M or
N marker.

Deleting connections

XMove the cursor onto the contact field or coil field to the right

of the connection that you want to delete. Press ALT to
switch to Connect mode.

XPress DEL.
EZ will delete a connection. Closed adjacent connections will

be retained.
If several rungs are connected to one another, EZ first deletes

the vertical connection. If you press DEL again, it will delete
the horizontal connection as well.

You cannot delete connections that EZ has created
automatically.

Close the delete operation with ALT or by moving the cursor
to a contact or coil field.

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Wiring with EZ

Inserting and deleting a rung

The EZ circuit diagram shows four of the 128 rungs in the
display at the same time. If you move the cursor past the top
or bottom of the display, EZ automatically scrolls up or down
the display to show hidden rungs – even empty ones.

A new rung is added below the last connection or inserted
above the cursor position:

I2u------ÄQ4
I3k

I2u------ÄQ4

 n

I3k

XPosition the cursor on the first contact field of an empty

rung.

XPress ALT.

The existing rung with all its additional connections is “shifted”
downwards. The cursor is then positioned directly in the new
rung.

Deleting a rung

EZ will only remove empty rungs, i.e. those without contacts
or coils.

XDelete all the contacts and relay coils from the rung.
XPosition the cursor on the first contact field of the empty

rung.

XPress DEL.
The subsequent rung(s) will be “pulled up” and any existing

links between rungs will be retained.

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MN05013003E86

Working with contacts and relays

Switching with the cursor buttons

With EZ, you can also use the four cursor buttons as hard­wired inputs in the circuit diagram.

P2

P1

P4

I1u------SQ1
P2k
I2u------RQ1
P4k

I5-------ÄM1
I1-m1u---ÄQ1
P1-M1k

J

............

IP2
FR 15:59

........STOP

The buttons are wired in the circuit diagram as contacts P1 to
P4. The P buttons can be activated and deactivated in the

P3

System menu.
The P buttons can also be used for testing circuits or manual

operation. These button functions are also useful for servicing
and commissioning purposes.

Example 1:

A lamp at output relay Q1 is switched on and off via inputs I1
and I2 or using cursor buttons

Í Ú.

Example 2

Terminal I1 is used to control output relay Q1. Terminal I5
switches to Cursor button mode and deactivates rung I1 via

M

1.

The P buttons are only detected as switches in the Status
menu. The cursor buttons are used for other functions in the
menus, the power flow display and in the text display.

The Status menu display shows whether the P buttons are
used in the circuit diagram.

• P: button function wired and active.

• P2: button function wired, active and P2 button Í pressed.

• P-: button function wired and not active.

• Empty field: P buttons not used.

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Wiring with EZ

Checking the circuit diagram

EZ contains a built-in measuring device enabling you to
monitor the switching states of contacts and relay coils during
operation.

I2---u---ÄQ4
I3---k

J

I2---U---ÄQ4
I3---k

J

XComplete the small parallel connection and switch EZ to

RUN mode via the main menu.

XReturn to the circuit diagram display.
You are now unable to edit the circuit diagram.

If you switch to the circuit diagram display and are unable to
modify a circuit diagram, first check whether EZ is in STOP
mode.

The circuit diagram display performs two functions depending
on the mode:

• STOP: Creation of the circuit diagram

• RUN: Power flow display
XSwitch on I3.
In the power flow display, energized connections are thicker

than non-energized connections.
You can follow energized connections across all rungs by

scrolling the display up and down.

The power flow display will not show signal fluctuations in
the millisecond range. This is due to the inherent delay
factor of LCD displays.

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MN05013003E88

Working with contacts and relays

Coil functions

You can set the coil function to determine the switching
behavior of relay coils. The following coil functions are
available for relays Q, M, S, D, “:”:

Table 7: Coil function

Circuit diagram
symbol

EZ
display

Coil function Example

Ä Contactor

function

Å Contactor

ÄQ1, ÄD2, ÄS4,
Ä:1, ÄM7

ÅQ1, ÅD2, ÅS4

function with
negated result

è Cycle pulse with

falling edge

È Cycle pulse with

rising edge

ä Impulse relay

function

S Set (latching) SQ8, SM2, SD3,

R Reset

(unlatching)

èQ3, èM4, èD8,
èS7

ÈQ4, ÈM5, ÈD7,
ÈS3

äQ3, äM4, äD8,
äS7

SS4

RQ4, RM5, RD7,
RS3

Marker relays M and N are used as a flag. The S relay can be
used as the output of an expansion unit or as a marker if no
expansion unit is connected. The only difference between
them and the output relay Q is that they have no output
terminals.

J

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descriptions for the appropriate relays.

The coil functions of the function relays are described in the

Wiring with EZ

J

cycle pulse negative, rising edge) must only be used once
for each relay coil. The last coil in the circuit diagram
determines the status of the relay.

When controlling a contactor or relay, the control coil is only
present once. If you are creating parallel circuits, use Set,
Reset as a coil function.

Rules for wiring relay coils

To ensure a clear overview of all relay states only assign the

The coil functions Ä, Å, è, È, (contactor, contactor negated,

same coil function once to a relay (
retentive coil functions such as

ä, S, R). However,

ä, S, R can be used several

times if required by the circuit diagram logic.
Exception: When using jumps to structure a circuit diagram,

this coil function can also be used effectively several times.

Relay with contactor function

Ä

The output signal follows immediately after the input signal
and the relay acts as a contactor.

on

on

Figure 40: Signal diagram of contactor function

Representation in EZ:

• Output relays Q:

•Markers M, N:

ÄQ1 to ÄQ8 (depending on type)

ÄM1 to ÄM16, ÄN1 to ÄN16

• Function relays (Text) D: ÄD1 to ÄD16

• Output relays S: ÄS1 to ÄS8

• Jumps: Ä:1 to Ä:8

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MN05013003E90

Working with contacts and relays

Contactor function with negated result (inverse contactor
function)

The output signal is simply an inversion of the input signal; the
relay operates like a contactor with contacts that have been
negated. If the coil is triggered with the 1 state, the coil
switches its make contacts to the 0 state.

Figure 41: Signal diagram of inverse contactor function

Representation in EZ

Å

on

on

• Output relays Q:

•Markers M, N:

ÅQ1 to ÅQ8 (depending on type)

ÅM1 to ÅM16, ÅN1 to ÅN16

• Function relays (Text) D: ÅD1 to ÅD16

• Output relays S: ÅS1 to ÅS8

• Jumps: Å:1 to Å:8

Falling edge evaluation (cycle pulse) è

This function is used if the coil is only meant to switch on a
falling edge. With a change in the coil state from 1 to 0, the coil
switches its make contacts to the 1 state for one cycle.

on

on

Figure 42: Signal diagram of cycle pulse with falling edge

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Wiring with EZ

Representation in EZ:

•Markers M, N:

• Jumps: è:1 to è:8

J

Physical outputs should not be used as a cycle pulse is
generated.

Rising edge evaluation (cycle pulse) È

This function is used if the coil is only meant to switch on a
rising edge. With a change in the coil state from 0 to 1, the coil
switches its make contacts to the 1 state for one cycle.

on

on

Figure 43: Signal diagram of cycle pulse with rising edge

Representation in EZ:

•Markers M, N:

• Jumps: È:1 to È:8

èM1 to èM16, èN1 to èN16

ÈM1 to ÈM16, ÈN1 to ÈN16

J

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Physical outputs should not be used as a cycle pulse is
generated.

MN05013003E92

Working with contacts and relays

Impulse relay ä

The relay coil switches whenever the input signal changes
from 0 to 1. The relay behaves like an impulse relay.

on

on

Figure 44: Signal diagram of impulse relay

Representation in EZ:

• Output relays Q:

•Markers M:

• Function relays (Text) D: äD1 to äD8

• Relays S: äS1 to äS8

J

A coil is automatically switched off if the power fails and if
STOP mode is active. Exception: Retentive coils retain
signal 1 (
from page 226).

äQ1 to äQ8 (depending on type)

äM1 to äM16

J section “Retention (non-volatile data storage)”

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Wiring with EZ

Latching relay

The “latch” and “unlatch” relay functions are used in pairs. The
relay picks up when latched and remains in this state until it is
reset by the “unlatch” function.

:

on

S

I1-I2----SQ1

I2-------RQ1

R

on

on

AB C

Figure 45: Latching relay signal diagram

• Range A: The Set coil and the Reset coil are triggered at different
times

• Range B: Reset coil is triggered at the same time as the Set coil

• Range C: Power supply switched off

Representation in EZ:

• Q output relays:

SQ1 to SQ8, RQ1 to RQ8 (depending on

type)

•M markers:

SM1 to SM16, RM1 to RM16

• (Text) D function relays: SD1 to SD8, RD1 to RD8

• S relays:SS1 to SS8, RS1 to RS8

Use each of the two relay functions S and R once only per
relay.

If both coils are triggered at the same time, priority is given to
the coil further down in the circuit diagram. This is shown in
the above signal diagram in section B.

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MN05013003E94

Function relays

J

fails or if the device is in STOP mode. Exception: Retentive
coils retain signal 1 (

J section “Retention (non-volatile

data storage)”, page 226).

Function relays Function relays allow you to simulate the functions of different

conventional control engineering devices in your circuit
diagram. EZ provides the following function relays:

Table 8: Function relays

A latched relay is automatically switched off if the power

EZ circuit diagram
symbol

A1, A2 Analog value comparator, threshold

C1, CC1, DC1, RC1 Counter relay, up/down counter, high-

D2, ÄD2 Text, output user-defined texts, enter

Ö1, Ö2 Time switch, weekday/time
O1, ÄO2 Operating hours counter with limit

T1,
TT1, RT1, HT1
X

, ?X

T1,
TT1, RT1, HT1
â

, ?â

T6,
TT6, RT6, HT6
Xâ, ?Xâ

T2,
TT2, RT2, HT2

ü

Function relays

value switch (only useful for devices
with an analog input)

speed counter, frequency counter

values

value entry.
Timing relay, on-delayed

Timing relay, on-delayed with random
switching

Timing relay, off-delayed
Timing relay, off-delayed with random
switching

Timing relay, on/off-delayed
Timing relay, on/off-delayed with
random switching

Timing relay, single pulse

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Wiring with EZ

EZ circuit diagram
symbol

T3,
TT3, RT3, HT3
Ü

:2,
Ä:2

Y3 Year time switch, date
Z1, Z3 Master reset, central reset of outputs,

Function relays

Timing relay, flashing

Jump

markers

A function relay is started via its relay coil or by evaluating a
parameter. It switches the contact of the function relay
according to its function and the set parameters.

Current actual values are cleared if the power supply is

J

switched off or if EZ is switched to STOP mode.
Exception: Retentive coils keep their logic state (

“Retention (non-volatile data storage)”, page 226).

Attention!

The following applies to RUN mode: EZ processes the
function relays after a pass through the circuit diagram. The
last state of the coils is used for this.

J section

Only use the coil of a function relay once. Exception: When
working with jumps, the same coil can be used several
times.

Example with function relay timer and counter relay

A warning light flashes when the counter reaches 10. The
example shows function relays C1 and T1. The S1 pushbutton
actuator is used for the count signal. The S2 pushbutton
actuator resets counter P1.

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MN05013003E96