Omega EZ User guide

EZ Applications

Application Guide

April 2005
New Information

Contents

Showroom and Store Window Lighting . . . . . . . . . . . . 2

Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Overview Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Operating Description . . . . . . . . . . . . . . . . . . . . . . . . 2

Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

List of Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Floor Lighting

Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Overview Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operating Description . . . . . . . . . . . . . . . . . . . . . . . . 6

Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

List of Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Belt Sequence Control for Three Conveyor Belts

with Motor Monitoring

Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Overview Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Operating Description . . . . . . . . . . . . . . . . . . . . . . . . 11

Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Load Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

List of Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Greenhouse Temperature and Ventilation Control

Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Overview Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Operating Description . . . . . . . . . . . . . . . . . . . . . . . . 18

Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Load Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Sample Switching Points . . . . . . . . . . . . . . . . . . . . . . 20

List of Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Lighting Control in a Production Room

Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Overview Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Operating Description . . . . . . . . . . . . . . . . . . . . . . . . 24

Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Load Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Switching Points of the Daylight Control Switch . . . 26

List of Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Booster Pumps

Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Overview Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Operating Description . . . . . . . . . . . . . . . . . . . . . . . . 30

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

. . . . . . . . . . . . . . . . . . . . . . . . . 11

. . . 18

. . . . . . . . . . . . . 24

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Load Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Pressure Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Switching Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

List of Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Tank Installation Level Indicator

Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Overview Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Operating Description . . . . . . . . . . . . . . . . . . . . . . . . 37

Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

List of Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Access Monitoring for a Parking Garage

Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Overview Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Operating Description . . . . . . . . . . . . . . . . . . . . . . . . 42

Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

List of Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Time-Controlled Lighting System

Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Overview Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Operating Description . . . . . . . . . . . . . . . . . . . . . . . . 46

Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

List of Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Refrigeration Control System

Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Overview Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Operating Description . . . . . . . . . . . . . . . . . . . . . . . . 54

Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Load Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

List of Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Perimeter Advertising in a Stadium

Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Overview Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Operating Description . . . . . . . . . . . . . . . . . . . . . . . . 60

Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

List of Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Rolling Door Control

Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Overview Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Operating Description . . . . . . . . . . . . . . . . . . . . . . . . 65

Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Load Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

List of Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

. . . . . . . . . . . . . . . . . . 37

. . . . . . . . . . . 42

. . . . . . . . . . . . . . . . . 46

. . . . . . . . . . . . . . . . . . . . 54

. . . . . . . . . . . . . . . 60

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 2

Showroom and Store
Window Lighting

Task

To automatically switch the showroom
lights, store window lighting and
external advertising display for a retail
store on or off. The on/off function
must take into account the day of the
week, the time and a daylight control
switch. The connection times for the
store window lighting can be set as
required. It must also be possible to
switch all the lights on and off manu­ally. The showroom and store window
lighting must turn on in the event of an
alarm.

Effective: April 2005

EZ Applications

Overview Drawing

a

d

e

t

r

c

o

Figure 1. Overview

Operating Description

External Advertising Display

Mon – Sun 6:00 am – 11:00 pm

Time switch 1

The daylight control switch causes the
advertising display to turn off as the
light level rises and to turn on at dusk.

It must also be possible to manually
turn the advertising display on and off
at any time. The P2 (Up arrow) and P4
(Down arrow) function buttons on the
“EZ” control relay are used for this
purpose.

Note: The P buttons are activated in the

Special system menu. Press ALT and DEL
simultaneously to change to the Special
menu. See also the User Manual
MN05013003E.

Store Window Lighting

Mon – Fri 8:00 am – 10:00 pm

Time switch 2

Sat 8:00 am – 11:00 pm

Sun 10:00 am – 10:00 pm

The store window lighting is also con­trolled by the daylight control switch:
It is turned off as the light level rises
and is turned on when it starts to get
dark.

The S5 button is used to turn the store
window lighting on and off manually
outside the programmed times.

In the event of an alarm, potential-free
contact S6 in the alarm system turns
the store window lighting on.

Once time switch 2 has been enabled it
can be used to change the on/off
times, even if a password was acti­vated up in the Special menu. The time
switch is enabled by programming the
“+” symbol.

Showroom Lighting

Mon – Fri 8:55 am – 1:05 pm

Time switch 3
1:55 pm – 6:35 pm

Sat 8:55 am – 2:05 pm

The flush-mounted switches S1, S2, S3
can be used to activate the showroom
lighting outside the programmed
times.

In the event of an alarm, the show­room and store window lights are
turned on by contact S6.

For more information visit: www.EatonElectrical.com

AP05013001E

EZ Applications

Circuit Diagram

F1

L1

N

DEL

ESC

S6

ALT

OK

H3

S4

S1

S2

S3

EZ512-AC-RC

Q1 Q2 Q3 Q4

S5

L

12 12 12 12

H1

I1 I2 I3 I4 I5 I6 I7 I8

N N

H2

S1 – S3 Light switches for showroom lighting
S4 Connection contact for daylight control switch
S5 Light switch for store window lighting
S6 Connection contact for alarm system
H1 External advertising display
H2 Store window lighting
H3 Showroom lighting
F1 16 A char. B miniature circuit-breaker

Figure 2. Circuit Diagram

CAUTION

The safety requirements of the applicable VDE, IEC, UL and CSA standards
require the phase that is used for the power supply to be used for the inputs as
well. If this is not the case, “EZ” will not detect the connection level and can be
damaged by overvoltages

Application Guide

Effective: April 2005 Page 3

List of Operands

I1 Input, light switch 1,

showroom lighting

I2 Input, light switch 2,

showroom lighting

I3 Input, light switch 3,

showroom lighting

I4 Input, connection contact,

daytime control switch

I5 Input, light switch, store

window lighting

I6 Input, connection contact,

alarm system

M1 Marker relay, buffer memory,

external advertising display
ON/OFF

M2 Marker relay, buffer memory,

store window lighting
ON/OFF

M3 Marker relay, buffer memory,

showroom lighting ON/OFF

P2 Up arrow cursor key =

external advertising display
ON

P4 Down arrow cursor key =

external advertising display
OFF

Q1 Output relay, external

advertising display

Q2 Output relay, store window

lighting

Q3 Output relay, showroom

lighting

1 Connection contact, time

1 = time switching, external
advertising display

2 Connection contact, time

2 = time switching, store
window lighting

3 Connection contact, time

3 = time switching, showroom
lighting

Benefits

■ Implemented functions:
❑ 3 x single-channel time switches

with weekly and daily programs

❑ 3 x impulse changeover relays

■ Less wiring required

■ Takes up less space than conven-

tional systems

■ Password function protects against

unauthorized access

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 4 Effective: April 2005

Examples

EZ Applications

I

1

I2

I3

P2

P4

I5

1

M1

2

Art Deco

8/13/98

I4

I

4

M3

M1S

M1R

M2

Q

1

2

Q

Comment:

Flush-mounted switch S1, S2, S3

for showroom lighting

Set external advertising display switch

Reset external advertising display switch

Switch for store window lighting

External advertising display which is dependent

on daytime control switch I4

Store window lighting which is dependent

Customer: Program:

Date: Page:

Lighting, example 1

1

M2

I6

3

M3

I

6

Q3

Figure 3. EZ Control Relay Circuit Diagram

on daytime control switch I4, switch

and alarms

Showroom lighting which is dependent on

flush-mounted switch

and alarms

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 5

Customer: Program:

Date:

Time switches

ON

OFF

Time switches

ON

OFF

Time switches

ON

OFF

Art Deco

8/13/98

MO S

06 00 A

23 00

MO S A S UF

08 00

22 00

MO F

08 55

13 05

U

-

:

:

-

:

:

-

:

:

–

R

A

+

R

A

–

Page:

-

1

ON

OFF

222

ON

OFF

3

ON

OFF

:

:

-

08 00

:

23 00

:

MO F

13 55

18 35

R

-

:

:

Lighting, example 1

2

ON

OFF

B

+

3

B

–

ON

OFF

ON

OFF

10 00

22 00

S

08 55

14 05

-

:

:

-

:

:

A

-

:

:

C

+

3

C

–

Figure 4. EZ Control Relay Parameters

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 6 Effective: April 2005

EZ Applications

Floor Lighting

Task

To enable the corridor lights on each
floor of a multi-story building to be
switched on and off at various flush­mounted switches. In parallel, there
should also be a central switch from
which all the lights can be turned on
and off. In the event of a fire, it must
be possible to turn on all the corridor
lights. To save energy, the corridor
lights should be turned off altogether
at certain times.

Overview Drawing

Figure 5. Overview

Operating Description

On each of the four floors, the corridor
lights can be turned on and off (three­wire control) at three flush-mounted
switches (S1 to S12).

If necessary, e.g. for cleaning, the
corridor lights on every floor can be
turned on at switch S13 and turned
off at switch S14 in the maintenance
man’s quarters or building superinten­tent’s room.

In the event of a fire, contact K1 in the
fire alarm system turns on all the
corridor lights.

To save energy, the corridor lights are
all turned off at 6:30 pm, Monday to
Friday and at 2:30 pm on Saturday.

CAUTION

The safety requirements of the
applicable VDE, IEC, UL and CSA
standards require the phase that is
used for the power supply to be used
for the inputs as well. If this is not the
case, “EZ” will not detect the switch
power level and can be damaged by
overvoltages.

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 7

Circuit Diagram

F1

L1

N

S2

S3

S4

S5

S6

S7

S1

L

N N

EZ512-AC-RC

12 12 12 12

Q1 Q2 Q3 Q4

H1

F1 16 A, char. B miniature circuit-breaker
H1 – H4 Lights on 1st – 4th floors
S1 – S3 Light switches, 1st floor
S4 – S6 Light switches, 2nd floor
S7 – S9 Light switches, 3rd floor
S10 – S12 Light switches, 4th floor
S13 Central ON switch
S14 Central OFF switch
K1 Contact, fire alarm system

Figure 6. Circuit Diagram

S8

I1 I2 I3 I4 I5 I6 I7 I8

DEL

ESC

H2

S9

H3

ALT

List of Operands

I1 Input, light switches on

1st floor

I2 Input, light switches on

2nd floor

I3 Input, light switches on

S10

S11

OK

H4

S12

S13

S14

K1

3rd floor

I4 Input, light switches on

4th floor
I5 Input, central ON switch
I6 Input, central OFF switch
I7 Input, contact in fire alarm

system
M1 Marker relay, buffer memory

light on 1st floor ON/OFF
M2 Marker relay, buffer memory

light on 2nd floor ON/OFF
M3 Marker relay, buffer memory

light on 3rd floor ON/OFF
M4 Marker relay, buffer memory

light on 4th floor ON/OFF
M5 Marker relay, buffer memory

light ON/OFF at central switch
M6 Marker relay, buffer memory

light ON/OFF at central switch

or via fire alarm system
Q1 Output relay, lights on

1st floor
Q2 Output relay, lights on

2nd floor
Q3 Output relay, lights on

3rd floor
Q4 Output relay, lights on

4th floor
T1 Timing relay, control pulse,

central light OFF switch

1 Contact switch, Time 1

Current switch, Mon-Fri 6:30

pm/Sat 2:30 pm

AP05013001E For more information visit: www.EatonElectrical.com

Benefits

■ Implemented functions:
❑ 1 x single-channel time switch

with weekly and daily programs

❑ 4 x impulse changeover relays

with central circuit

■ Less wiring required

■ Takes up less space than conven-

tional systems

■ Increased flexibility facilitates

modification and extension

■ Password function protects against

unauthorized access

Application Guide

Page 8 Effective: April 2005

Examples

EZ Applications

I

1

I2

I3

I4

I5

MI5

7

M1

6

Floor Lighting

8/13/98

1

M

M2

M3

M

4

M5S

M6

1

Q

Comment:

Turn on 1st floor - press (51-53)

Turn on 2nd floor - press (54-56)

Turn on 3rd floor - press (57-59)

Turn on 4th floor - press (510-512)

Central corridor lighting ON switch S13

Central lighting ON switch (S13) or

in the event of a fire (K1)

Lights on 1st floor ON (HI)

central switch or in the event of a fire

Customer: Program:

Date: Page:

Example 2

1

MM2

MM6

M

3

6

Q 2

Q3

Figure 7. EZ Control Relay Circuit Diagram

Lights on 2nd floor ON (H2)

central switch or in the event of a fire

Lights on 3rd floor ON (H3)

central switch or in the event of a fire

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 9

M

4

M6

1

T1

M5

T

1

I

6

Floor Lighting

8/13/98

Page:

Comment:

Q4

TT1

MR

1

M2R

MR3

MR4

MR5

Lights on 4th floor ON (H4)

central switch or in the event of a fire

Press to turn off all lights together

1st floor lights OFF from central switch

2nd floor lights OFF from central switch

3rd floor lights OFF from central switch

4th floor lights OFF from central switch

Reset from central ON switch

Central corridor lighting OFF switch S14

Customer: Program:

Date:

Example 2

2

Figure 8. EZ Control Relay Circuit Diagram

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 10 Effective: April 2005

EZ Applications

Customer: Program:

Date:

Timing relays

Time switches

ON

OFF

Floor Lighting

8/13/98

01S

:

TRG T

RES

MO F R

-

18 30

:

18 31

:

00

Page:

:::::

S

14 30

ON

OFF

14 31

TRG T

RES

A

-

:

:

1

+

I

A

+

Figure 9. EZ Control Relay Parameters

Example 2

3

I

B

+

ON

OFF

TRG T

RES

-

:

:

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 11

Belt Sequence Control for
Three Conveyor Belts with
Motor Monitoring

Task

To start up and shut down three con­veyor belts at different times. There
are to be three operating modes
“Staggered start-up”, “Staggered
shut-down” and “Fast stop”. The
motor-protective circuit-breakers in
the belt drives should be monitored; if
a circuit-breaker trips, the conveyor
system should stop in a controlled
manner. The fault should also be sig­naled by a flashing light.

Overview Drawing

Belt 1

Belt 2

1 0

Belt 3

Figure 10. Overview

Operating Description

The three conveyor belts in a bulk
material handling installation have to
be started up and shut down at differ­ent times in order to ensure that the
materials are transported safely and
without interruption.

Start-Up

When the START button S1 is pressed,
the belts start up at 5-second intervals
(this interval is permanently pro­grammed and cannot be changed).
Belt 3 starts up first.

Shut-Down

When the STOP button S2 is pressed,
the belts stop in reverse order, i.e.
starting from belt 1. This guarantees
that the belts are running at no-load
when they are restarted, thus avoiding
heavy starting with a loaded belt.

When the button is pressed, 5 seconds
elapse before belt 1 is shut down. The
subsequent belts then turn off, again
after a 5-second delay. It must be pos­sible to change the time via the “EZ”
control relay. To do this, the “+” must
be set when the function block is pro­grammed.

The “Fast stop” button S3 turns off all
three belts without a time delay.

Failure of a Motor

If a drive motor fails, the trip-indicating
auxiliary contact (PKZ) opens. The
fault is signaled via the flashing light
and automatically triggers the STOP
function. This means that in the event
of a fault any belts downstream of the
defective drive run at no-load for 5 sec­onds before they are turned off. Any
belts upstream of the defective drive
are turned off immediately.

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 12 Effective: April 2005

Control Circuit

F1

L1

N

EZ Applications

S0

S1

S2

S3

L

EZ512-AC-R

12 12 12 12

Q1 Q2 Q3 Q4

K

I1 I2 I3 I4 I5 I6 I7 I8

N

N

1

2

K

DEL

ESC

Q1

ALT

OK

3

K

S0 Emergency stop
S1 START button
S2 STOP button
S3 Fast stop button
Q1 – Q3 Trip-indicating auxiliary contact for motor 1 – 3
K1 – K3 Motor, belt 1 – 3
H1 Indicator light
F1 16 A, char B miniature circuit-breaker

Q2

Q3

H1

Figure 11. Control Circuit

CAUTION

The safety requirements of the applicable VDE, IEC, UL and CSA standards
require the phase that is used for the power supply to be used for the inputs as
well. If this is not the case, “EZ” will not detect the switch power level and can be
damaged by overvoltages.

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 13

Load Circuit

L1
L2
L3
N
PE

Q1

K1

M

3 ~

M1

Figure 12. Load Circuit

4.43

4.44

Q2

K2

M

3 ~

M2

4.43

4.44

Q3

K3

M

3 ~

M3

4.43

4.44

List of Operands

I1 Input, START button
I2 Input, STOP button
I3 Input, Fast stop button
I4 Input, trip-indicating aux.

contact for motor 1

I5 Input, trip-indicating aux.

contact for motor 2

I6 Input, trip-indicating aux.

contact for motor 3

M1 Marker relay, buffer memory,

trip-indicating aux. contact,
motor 1, 2, 3

M2 Marker relay, buffer memory,

STOP

M3 Marker relay, buffer memory,

START

Q1 Output, contactor in motor

for belt 1

Q2 Output, contactor in motor

for belt 2

Q3 Output, contactor in motor

for belt 3
Q4 Output, indicator light
T1 Timing relay with 5 sec.

ON delay ⇒⇒⇒⇒ Start belt 2
T2 Timing relay with 5 sec.

ON delay ⇒⇒⇒⇒ Start belt 1
T3 Timing relay with 5 sec.

OFF delay ⇒⇒⇒⇒ Stop belt 1
T4 Timing relay with 5 sec.

OFF delay ⇒⇒⇒⇒ Stop belt 2
T5 Timing relay with 5 sec.

OFF delay ⇒⇒⇒⇒ Stop belt 3
T6 Timing relay flashing for 1

second to indicate fault

AP05013001E For more information visit: www.EatonElectrical.com

Benefits

■ Implemented functions:
❑ 2 x ON-delayed timing relays

❑ 2 x OFF-delayed timing relays
❑ 1 x flash/blink relay
❑ 2 x auxiliary contactors

■ Less wiring required

■ Takes up less space than

conventional systems

■ Password function protects against

unauthorized access

Application Guide

Page 14 Effective: April 2005

Examples

EZ Applications

Customer: Program:

Date: Page:

Belt control

8/13/98

I

4I5I6

I1 M1

Q3

T1 M1

Q2

2

MT1

I2

2

M1

Q3S

M3S

T1T

Q2S

TT2

Q1

S

M

S

TT3

Comment:

Motor-protective circuit-breaker 1, 2, 3 not tripped

START button -> motor for belt 3 on

START button pressed

ON-delay for belt 2

Motor for belt 2 on

ON-delay for belt 1

Motor for belt 1 on

2

STOP button pressed

OFF-delay for belt 1

Example 3

1

TM3

1

M

3

I

Q1

3

M

QR

Q3

TT4

Figure 13. EZ Control Relay Circuit Diagram

1

Motor for belt 1 off

OFF-delay for belt 2

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 15

Customer: Program:

Date:

Belt control

8/13/98

T

43

M

5

I

6I

I

3

2

Q

T5

I

I3

I 4

M 3

6

Q2

R

T5T

QR3

TT 6

Page:

Comment:

Motor for belt 2 off

OFF-delay for belt 3

Motor for belt 3 off

A motor has failed

Example 3

2

I

5

I

6

6

T

Q

Figure 14. EZ Control Relay Circuit Diagram

4

Indicator light

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 16 Effective: April 2005

EZ Applications

Customer: Program:

Date:

Belt control

8/13/98

T

53

M

M

1

3I

I

2

1

M

3I

R

Page:

Comment:

M2

Reset buffer memory for STOP

M

3R

Reset buffer memory for START

Example 3

3

Figure 15. EZ Control Relay Circuit Diagram

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 17

Customer: Program:

Date:

Timing relays

X

Timing relays

X

Belt control

8/13/98

05S

:

TRG T

RES

05S

:

TRG T

RES

Page:

X

00 05 00 05 00

00 05 00 01 00

S

:::::

1

+

4

+

TRG T

RES

X

SS

:::::

TRG T

RES

Figure 16. EZ Control Relay Parameters

Example 3

4

2

+

5

+

X

S

TRG T

RES

TRG T

RES

3

+

6

+

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 18 Effective: April 2005

EZ Applications

Greenhouse Temperature and
Ventilation Control

Task

To automatically open and close the
roof lights of a greenhouse in order to
adjust the ventilation and temperature.
Warm air should be blown in via the
heating system when the temperature
drops below a certain level. The drive
motors for the fans and roof lights
must be monitored for faults, which
should also be signaled by a flashing
light.

Overview Drawing

Figure 17. Overview

Operating Description

The greenhouse is also used as a dis­play and sales area. The roof lights are
opened for ventilation and are closed
again depending on the temperature.
The “Open window” and “Close win­dow” switching points are pro­grammed via the “EZ” control relay.
The voltage output of temperature
sensor B1 supplies the necessary com­parison value. The following example
demonstrates how the switching
points are determined or calculated.

Ventilation Control

All the roof lights are activated by a
three-phase AC motor M1 with a
reversing contactor circuit. The end
positions are detected by limit switch
S2 (open) and S3 (closed). The motor
switches off when the limit switch is
reached.

Warm Air Supply

When the temperature in the green­house falls below a certain level, the
fan motor M2 is automatically acti­vated to blow in warm air. The motor
is switched off again when the temper­ature returns to the desired level.

Failure of a Motor

If M1 or M2 fails, the contact of the cor­responding trip-indicating auxiliary
contact Q1 or Q2 opens. The fault is
signalled via the flashing light H1 for
both motors.

Continuous Ventilation

Key switch S1 is used to turn off the
automatic temperature control and
select “Continuous ventilation”. It may
be necessary to first close the roof
lights and then open them again in
order to use this function.

It should be possible to enter the
motor run time T2, which determines
how far the roof light is opened,
directly on the “EZ” control relay.

The roof lights can be opened as far as
the end position. The default for T2 is
4 seconds.

Manual Operation

For maintenance and repairs, the win­dows can be opened via the P2 button
(Up arrow) and closed via P4 (Down
arrow).

Note: The P buttons are activated in the
Special menu. Press ALT and DEL simulta­neously to change to the Special menu. See
also the User Manual MN05013003E.

For more information visit: www.EatonElectrical.com AP05013001E

Control Circuit

L1
N
PE

EZ Applications

Application Guide

Effective: April 2005 Page 19

S0

F1

G1

~

F2

-

0V

+24V

S1S3S2

24V

EZ512-DC-R

12 12 12 12

Q1

K2

K1

I1 I2 I3 I4 I5 I6 I7 I8

0V

0V

Q2 Q3 Q4

K1

K2

B1 Temperature sensor
F1 16 A char. B miniature circuit-breaker
F2 Miniature circuit-breaker (optional)
G1 Power supply unit 230V AC/24V DC
H1 Motor fault indicator light
K1 Contactor for Open window drive motor
K2 Contactor for Close window drive motor
K3 Contactor for fan motor
Q1 Window drive motor tripping indicator
Q2 Fan motor tripping indicator
S0 Emergency stop
S1 Key switch
S2 Open limit switch
S3 Closed limit switch

DEL

ESC

K3

ALT

OK

Q1

H1

Q2

T

0-10V

B1

Figure 18. Control Circuit

Note: The electrical interlock may be
omitted when using a reversing contactor
combination with a mechanical interlock.

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 20 Effective: April 2005

EZ Applications

Load Circuit

L1
L2
L3
N
PE

Q1

4.43

4.44

1

K

M

3 ~

M1

K2

Q2

3

K

M

3 ~

M2

4.43

4.44

Figure 19. Load Circuit

Sample Switching Points

■ Temperature sensor measuring range: –35 to +55°C

■ Output signal from temperature sensor: 0 to 10V DC

■ Selected switching point – Open: 25°C

■ Selected switching point – Close: 23°C

■ Selected switching point – Heat: 20°C

General formula for the comparison value:

10V

×=

---------------------

UL LL+

UL = Upper limit of measured value

LL = Lower limit of measured value

Setpoint value for Open comparator:

10V

--------------------------------­55° C35°C+

Setpoint value for Close comparator:

10V

--------------------------------­55° C35°C+

Setpoint value for Heat comparator:

10V

---------------------------------

55° C35°C+

A switching range (± 0.1V) must be defined for each comparison value to avoid
having to repeatedly turn ON and OFF when the comparison value is reached.

■ This gives the following switching

points in the comparator blocks:

❑ Open window

ON = 6.8V
OFF = 6.6V

❑ Close window

ON = 6.3V
OFF = 6.5V

❑ Heat

ON = 6.0V
OFF = 6.2V

Switchpoint LL+()

× 64V,=

25° C35°C+()

× 64V,=

23° C35°C+()

× 61V,=

20° C35°C+()

List of Operands

A1 Comparator, Open window

ON

A2 Comparator, Open window

OFF

A3 Comparator, Close window

ON

A4 Comparator, Close window

OFF
A5 Comparator, Heat ON
A6 Comparator, Heat OFF
I1 Input, key switch for continu-

ous ventilation
I2 Input, Open limit switch
I3 Input, Closed limit switch
I4 Input, window drive motor

trip-indicating aux. contact.

Input, fan motor trip-

indicating aux. contact
I8 Input, comparative voltage of

temperature sensor
M1 Marker relay, buffer memory,

Open window
M2 Marker relay, buffer memory,

Close window
M3 Marker relay, buffer memory,

Open window comparator
M4 Marker relay, buffer memory,

Close window comparator
M5 Marker relay, buffer memory,

Heat comparator
M6 Open marker via T2
P2 Up arrow cursor button =

Open window
P4 Down arrow cursor button =

Close window
Q1 Output, contactor for Open

window drive motor
Q2 Output, contactor for Close

window drive motor
Q3 Output, contactor for fan motor
Q4 Output, motor fault indicator

light
T1 Timing relay, flashing, for

fault message
T2 Timing relay, single-pulse,

4 seconds = opening time for

continuous ventilation

Benefits

■ Implemented:
❑ 1 x ON-delayed timing relay
❑ 1 x flash/blink relay

■ Temperature values can be

processed (analog values)

■ Less wiring required

■ More flexible if modifications are

required

For more information visit: www.EatonElectrical.com AP05013001E

Examples

EZ Applications

Application Guide

Effective: April 2005 Page 21

A

1

A2

A3

A4

A5

A6

3

M

M

1

P

2

Greenhouse

8/13/98

2

I

1

I2

Comment:

MS3

MR

MS

M4R

S

M5

MR5

MI4

2I

Q

Q

Open window ON

3

Open window OFF

4

Close window ON

Close window OFF

Heat ON

Heat OFF

1

≥25°C, do not open window, motor 1

1

Motor 1 opens

Customer: Program:

Date: Page:

Example 4

1

T2

MM4

2

P4

I1

2

I

3

I

I

1

3

I

3M6

I

I

4

1Q

M

Q2

Figure 20. EZ Control Relay Circuit Diagram

2

≤23°C, do not close window, motor 1

Motor 1 closes

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 22 Effective: April 2005

EZ Applications

Customer: Program:

Date:

Greenhouse

8/13/98

M

5I5

I1 I3

4

I

I5

T1

1

I

R

Page:

Comment:

Q3

≤ 20°C, motor 2, ->warm air

T2T

degree of opening via T2

M6S

Marker Open via T2

T1T

Motor 1 or 2 defective

Q

4

Indicator light H1 flashes

M6

Reset marker Open via T2

Example 4

2

Figure 21. EZ Control Relay Circuit Diagram

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 23

Customer: Program:

Date:

Timing relays

Analog comparators

I8

68

Analog comparators

I8

65

Greenhouse

8/13/98

01S

:

.

.

00

TRG T

RES

ANALOG ANALOG ANALOG

ANALOG ANALOG ANALOG

S

::

1

+

I8

A A

1

+

66

.

I8

A A

4

+

60

.

Page:

04 00

:::

TRG T

RES

Example 4

3

2

+

2

+

5

+

TRG T

RES

I8

63

.

I8

62

.

A

3

+

A

6

+

Figure 22. EZ Control Relay Parameters

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 24 Effective: April 2005

EZ Applications

Lighting Control in a
Production Room

Task

To automatically turn on the lighting
fixtures in a production room during
production hours. The lights should
turn on and off gradually in response
to changes in the daylight level. It
must be possible to turn the switch for
the individual lighting stages on and
off manually at any time. Faults in the
lighting system should be signaled by
a flashing light.

Overview Drawing

Figure 23. Overview

Operating Description

Three light fixtures, each with 12 fluo­rescent lights, are suspended from a
busbar system. The lighting is on from
6:00 am to 5:30 pm on Monday to Fri­day and is varied according to the day­light level. The switch-on times and
the ON duration must be variable to
suit requirements.

Lighting Stages

The use of three different switching
stages guarantees the necessary
brightness, saves energy and places a
uniform load on the mains supply.

Connection to the Busbar System

Phase 1:
Every 1st, 4th, 7th and 10th neon light
Activated via contactor K1
Enabled via daylight control switch B1

Phase 2:
Every 2nd, 5th, 8th and 11th neon light
Activated via contactor K2
Enabled via daylight control switch B2

Phase 3:
Every 3rd, 6th, 9th and 12th neon light
Activated via contactor K3
Enabled via daylight control switch B3

Lighting Stages

Stage 0:
All the lights are off.

Stage 1:
Every third light is on. Contact B1 is
closed.

Stage 2:
Every third light is off. Contacts B1 and
B2 are closed.

Stage 3:
All the lights are on. Contacts B1, B2
and B3 are closed.

Manual Operation

It must be possible to switch the indi­vidual lighting stages at light switches
S1 to S3.

Use of the manual function is signalled
by indicator lights H1 to H3.

Failure of a Busbar

The busbars are protected via minia­ture circuit-breakers Q1 to Q3 and are
monitored by trip indicating auxiliary
contacts. Faults are signalled in the
form of a group alarm via the flashing
indicator light H4.

Note: If the daylight control switches already
have an ON-delay or OFF-delay, these times
should be set as low as possible (of the order
of one second). Alternatively, the ON­delayed timers T1 to T6 programmed in
the “EZ” control relay (default value: 60
seconds) can be changed to obtain the
required overall delay.

For more information visit: www.EatonElectrical.com AP05013001E

Control Circuit

F1

L1

N

EZ Applications

Application Guide

Effective: April 2005 Page 25

S1

S2

S3

L

EZ512-AC-RC

12 12 12 12

Q1 Q2 Q3 Q4

K1

B1

I1 I2 I3 I4 I5 I6 I7 I8

N

N

DEL

ESC

K2

B2

B3

ALT

OK

K3

B1 – B3 Contact, daylight control switch 1 – 3
F1 16 A, char B miniature circuit-breaker
H1 – H3 Indicator light, stage 1 – 3
H4 Fault indicator light
K1 – K3 Contactor, lighting stage 1 – 3
Q1 – Q3 Miniature circuit-breaker 1 – 3
S1 – S3 Light switch, stage 1 – 3

H4

Q1

Q2

Q3

S1

H1

S2

H2

S3

H3

Figure 24. Control Circuit

CAUTION

The safety requirements of the applicable VDE, IEC, UL and CSA standards
require the phase that is used for the power supply to be used for the inputs as
well. If this is not the case, “EZ” will not detect the switching level and can be
damaged by overvoltages.

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 26 Effective: April 2005

EZ Applications

Load Circuit

L1
L2
L3

N
PE

Q1

K1

4.43

4.44

Q2

K2

4.43

4.44

Figure 25. Load Circuit

Switching Points of the Daylight Control Switch

On <- B2-> Off

On <- B3-> Off

On <- B1-> Off

Q3

K3

List of Operands

I1 Input, light switch, stage 1
I2 Input, light switch, stage 2
I3 Input, light switch, stage 3
I4 Input, contact of daylight

4.43

4.44

I5 Input, contact of daylight

I6 Input, contact of daylight

I7 Input, circuit-breaker

1L1

1L2

1L3
N
PE

2L1
2L2
2L3
N
PE

3L1
3L2
3L3
N
PE

M1 Marker relay, buffer memory,

M2 Marker relay, buffer memory,

M3 Marker relay, buffer memory,

Q1 Output, contactor for stage 1
Q2 Output, contactor for stage 2
Q3 Output, contactor for stage 3
Q4 Output, fault indicator light
T1 Timing relay with 60 sec.

T2 Timing relay with 60 sec.

T3 Timing relay with 60 sec.

T4 Timing relay with 60 sec.

T5 Timing relay with 60 sec.

T6 Timing relay with 60 sec.

LightDark

T7 Timing relay, flashing for

control switch 1

control switch 2

control switch 3

messages

stage 1

stage 2

stage 3

ON delay. ⇒⇒⇒⇒ Stage 1 ON

ON delay. ⇒⇒⇒⇒ Stage 1 OFF

ON delay. ⇒⇒⇒⇒ Stage 2 ON

ON delay. ⇒⇒⇒⇒ Stage 2 OFF

ON delay. ⇒⇒⇒⇒ Stage 3 ON

ON delay. ⇒⇒⇒⇒ Stage 3 OFF

1 second to indicate fault

Figure 26. Switching Points of the Daylight Control Switch

For more information visit: www.EatonElectrical.com AP05013001E

Benefits

■ Implemented functions:
❑ 1 x flash/blink relay

❑ 1 x single-channel time switch

with weekly and daily programs

■ Functional overall solution

■ Less wiring required

■ Takes up less space than conven-

tional systems

Examples

EZ Applications

Application Guide

Effective: April 2005 Page 27

I

4

T1

I

4

T2

I5

TI3

I

5

T4

6

Light fixtures

8/13/98

TT1

MS

TT

M1R

T3T

S

M2

T

T4

R

M2

T

T5

Comment:

Daytime control switch 1 ON, B1

1

Stage 1 ON

2

Daytime control switch 1 OFF, B1

Stage 1 OFF

Daytime control switch 2 ON, B2

Stage 2 ON

Daytime control switch 2 OFF, B2

Stage 2 OFF

Daytime control switch 3 ON, B3

Customer: Program:

Date: Page:

Example 5

1

S

T

R

T

M3

T 6

M3

T7

Q4

TT5

6

I

6

I

7

T7

Figure 27. EZ Control Relay Circuit Diagram

Stage 3 ON

Daytime control switch 3 OFF, B3

Stage 3 OFF

Fault in busbar 1, 2 or 3

Fault indicator light, Is,

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 28 Effective: April 2005

EZ Applications

I

1

M1

I

2

M2

I3

M3

Light fixtures

8/13/98

Q1

2

Q

Q

3

Page:

Comment:

Stage 1 ON (B1)

Stage 2 ON (B1 + B2)

Stage 3 ON (B1 + B2 + B3)

Customer: Program:

Date:

Example 5

2

Figure 28. EZ Control Relay Circuit Diagram

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 29

Customer: Program:

Date: Page:

Timing relays

X

Timing relays

Timing relays

Light fixtures

8/13/98

60S

:

TRG T

RES

60S

:

TRG T

RES

00

00

X

S

60 00 60 00

::

1

+

X

S

::

4

+

:::

TRG T

RES

60 00 60 00

:::

TRG T

RES

Example 5

3

2

+

5

+

X

S

XX

S

TRG T

RES

TRG T

RES

3

+

6

+

01S

:

00

TRG T

RES

7

+

Figure 29. EZ Control Relay Parameters

::

TRG T

RES

:::

TRG T

RES

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 30 Effective: April 2005

EZ Applications

Booster Pumps

Task

Two pumps provide the water supply
for an installation. Their operation is to
be monitored. The two pumps are to
be operated alternately to prevent
excessive wear. The operating status
and faults within the installation are to
be signaled by two indicator lights.
It must be possible to select the
pressure-related switching points for
activating the pumps as required.

Overview Drawing

Figure 30. Overview

Operating Description

Pumping Operation

The pumping station provides the
water supply for an installation. It
must also ensure that the pressure
does not fall below a specified mini­mum level. There are two booster
pumps P1 and P2 – if the pressure is
too low, one of the pumps is activated
via the pressure sensor B1. To ensure
that the two pumps are subject to
equal use and wear, they are run alter­nately for 48-hour periods. The two
indicator lights H1 and H2 signal which
of the two pumps is in use. If “EZ” is
disconnected from the power supply,
the operating hours count will start
again and pump 1 will be activated
first.

To enable the pumps to change over
after a shorter or longer operating
period, the counters C1 and C2 should
be set to new comparison values using
the following formula:

Desired changeover time in hours x
60 = comparison value

Default: 48 hours x 60 = 2880

Faults

Electrical failure of a pump motor is
detected by the trip indicating auxiliary­contacts for motor-protective circuit­breaker Q1 and Q2. The pump that is
still in working order will be activated.
If one of the pumps is mechanically
defective, the resulting drop in pressure
will be detected and the other pump
will be activated after time T4 has
elapsed. Both types of fault are
signaled by the flashing indicator light
H1 or H2. When both pumps are electri­cally defective, the indicator lights H1
and H2 will flash simultaneously.

Low Pressure

The system is monitored for low
pressure, which is signaled by indica­tor lights H1 and H2 which flash
alternately after time T5 has elapsed.
It must be possible to set the low pres­sure limit on the “EZ” control relay.

Acknowledgement

All fault messages are retained until
they have been acknowledged by
pressing button S3.

Maintenance

It must be possible to switch pump P1
directly using key switch S1 and pump
P2 using key switch S2.

For more information visit: www.EatonElectrical.com AP05013001E

Control Circuit

L1
N
PE

EZ Applications

Application Guide

Effective: April 2005 Page 31

S0

F1

G1

~

F2

-

0V

+24V

S1S3S2

0V

+24V

0V

EZ512-DC-R

12 12 12 12

Q1

K1

K2

Q1

I1 I2 I3 I4 I5 I6 I7 I8

DEL

ESC

Q2 Q3

H1

B1 Pressure sensor
F1 16 A char. B miniature circuit-breaker
F2 Miniature circuit-breaker (optional)
G1 Power supply unit 230V AC/24V DC
H1 Indicator light for pump 1
H2 Indicator light for pump 2
K1 Contactor for pump P1
K2 Contactor for pump P2
Q1 Trip-indicating auxiliary-contact for pump 1
Q2 Trip-indicating auxiliary-contact for pump 2
S0 Emergency stop
S1 Key switch for pump 1
S2 Key switch for pump 2
S3 Acknowledgement button

Q2

ALT

P

B1

0-10V

OK

Q4

H2

Figure 31. Control Circuit

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 32 Effective: April 2005

EZ Applications

Load Circuit

L1
L2
L3

N
PE

Q1

K1

M

3 ~

M1

4.43

4.44

Figure 32. Load Circuit

Pressure Diagram

0 bar

Figure 33. Pressure Diagram

A1A2 A3

Switching Points

A1 Pump 1 or pump 2 is activated;

H1 or H2 lights up.

A2 Low pressure

After time T4 (10 sec),
changeover to the inactive
pump, the fault is indicated by
flashing signal at H1 or H2.
After time T5, a total failure is
signaled by H1 and H2 flashing
alternately.

A3 Pump 1 or pump 2 is switched

off; H1 or H2 goes out.

See example 4 for determining the
pressure switching points.

Q2

K2

M

3 ~

M2

Pressure

4.43

4.44

Benefits

■ Implemented functions:
❑ 1 x flash/blink relay

❑ 2 x ON-delayed timing relays
❑ 1 x operating hour counters

■ Processing of pressure values

(analog values)

■ Variable switching points and

operating hour changeover

■ Less wiring required

■ Takes up less space than conven-

tional systems

List of Operands

A1 Comparator for minimum pres-

sure monitoring, lower threshold

A2 Comparator for low pressure

monitoring due to electrical or
mechanical fault

A3 Comparator for minimum pres-

sure monitoring, upper threshold

C1 Counter with 30 sec. pulse for

operating hours of pump 1

C2 Counter with 30 sec. pulse for

operating hours of pump 2

I1 Input, key switch for directly

activating pump 1

I2 Input, key switch for directly

activating pump 2

I3 Input, motor-protective

circuit-breaker for pump 1

I4 Input, motor-protective

circuit-breaker for pump 2

I5 Input, fault message

acknowledgement button

M1 Pump changeover marker relay

M1=Off: pump 1 / M1=On: pump 2

M2 Marker relay for low pressure/

mechanical fault, pump 1

M3 Marker relay for low pressure/

mechanical fault, pump 2

M4 Marker relay for electrical fault,

pump 1

M5 Marker relay for electrical fault,

pump 2

M6 Marker relay for total failure of

pumping system

M7 Marker relay for minimum

pressure switching point,
switch pump on/off

M8 Marker relay, buffer memory,

indicator light for pump 1

M9 Marker relay, buffer memory,

indicator light for pump 2
Q1 Output, contactor for pump 1
Q2 Output, contactor for pump 2
Q3 Output, indicator light for

pump 1
Q4 Output, indicator light for

pump 2
T1 30 sec. cycle for recording

operating time, pump 1
T2 30 sec. cycle for recording

operating time, pump 2
T3 1 sec. cycle for flashing signal

from indicator light
T4 Time delay for low pressure

message/mechanical fault,

pump 1, 2
T5 Time delay for low pressure

message, total failure

For more information visit: www.EatonElectrical.com AP05013001E

Examples

EZ Applications

Application Guide

Effective: April 2005 Page 33

Customer: Program:

Date: Page:

Pumping station

8/13/98

A

1

A3

I1

M7 M1 I 3

M1 I 4

I2

1Q

T

1

Comment:

M

S7

MR7

M 8

Q1

Q 2

M9

TT1

CR

2

C

C1

Lower threshold for minimum pressure

Upper threshold for minimum pressure

Pump 1 ON indicator light

Pump 1 active

Pump 2 active

Pump 2 ON indicator light

Pump 1 run time clock

Reset counter 2

Pulse counter 1-48 hours

Example 6

1

C1

Q2

T2

C2

S

R

C

R

Figure 34. EZ Control Relay Parameters

M1

TT

2

C1

C2

M1

Change over to pump 2

Pump 2 run time clock

Reset counter 1

Pulse counter 2-48 hours

Change over to pump 1

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 34 Effective: April 2005

EZ Applications

I3

I

4

A2

5T

T

4

Pumping station

8/13/98

I 5

Q

M

1

T3

S

R

S

T

S

3

Page:

Comment:

T

MS

1

M 4

M1

5

M

T4

TT5

MS

6

M2

Clock for flashing signal from indicator light

Electrical fault in pump 1

Active pump 2

Electrical fault in pump 2

Active pump 1

Low pressure monitoring

Low pressure signal, total failure

Mechanical fault in pump 1

Customer: Program:

Date:

Example 6

2

M2

M2

M4

M8

M6 T 3

I

4

T

36

M

S

M1

Q3

Figure 35. EZ Control Relay Circuit Diagram

Active pump 2

Fault in pump 1 -> Indicator light

H1 flashes

Pump 1 in use

Total failure ->Lights flash alternately

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 35

Customer: Program:

Date:

Pumping station

8/13/98

M3 I 3

M5

M9

M6

T

3

5I

Page:

Comment:

M

M

S22Q4T3

M

MR

6

Q4T3M3

MR2

MR

R

M4

Mechanical fault in pump 2

1

Active pump 1

Fault in pump 2 -> Indicator light

H2 flashes

Pump 2 in use

Total failure -> Lights flash alternately

Acknowledge fault messages

3

Example 6

3

R

M5

M6

R

Figure 36. EZ Control Relay Circuit Diagram

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 36 Effective: April 2005

EZ Applications

Customer: Program:

Date:

Timing relays

Timing relays

X

Analog comparators

Pumping station

8/13/98

30S

:

TRG T

RES

:

TRG T

RES

00

10S

00

ANALOG ANALOG

S S

1

+

X

S

4

+

Page:

30 00 01 00

::

::

:::

TRG T

RES

25 00

:::

TRG T

RES

Example 6

4

2

+

5

+

TRG T

RES

TRG T

RES

ANALOG

3

+

I8

29

.

Up and down counters

28 80 28 80

DIR

CNT

RES

I8

A A

1

+

20

.

C

1

+

Figure 37. EZ Control Relay Parameters

DIR

CNT

RES

I8

2

+

31

.

DIR

C

2

+

CNT

RES

A

3

+

C

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 37

Tank Installation Level
Indicator

Task

To monitor the fill level of three tanks.
When the maximum level is reached,
this should be indicated by a visual
and an audible signal.

Overview Drawing

Figure 38. Overview

Operating Description

The fill level of three fat tanks in an
animal feed plant is monitored. If one
tank is full, the corresponding indica­tor light H1, H2 or H3 flashes in the
control room to signal that a “new
value” is being formed. After a set
time has elapsed (default: 3 seconds)
an alaramstarts as well. The acknowl­edgement button S4 can be used for
all three tanks; this acknowledges
the audible signal from the alarm
and changes the flashing light to a
continuous light.

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 38 Effective: April 2005

EZ Applications

Control Circuit

F1

L1

N

S1

S2

S3

L

N N

EZ512-AC-R

12 12 12 12

Q1 Q2 Q3 Q4

H1

S4

I1 I2 I3 I4 I5 I6 I7 I8

DEL

ESC

H2

H3

ALT

OK

H4

F1 16 A, char. B miniature circuit-breaker
H1 Indicator light for tank 1
H2 Indicator light for tank 2
H3 Indicator light for tank 3
H4 Alarm
S1 Level indicator for tank 1
S2 Level indicator for tank 2
S3 Level indicator for tank 3
S4 Acknowledgement button

Figure 39. Control Circuit

CAUTION

The safety requirements of the applicable VDE, IEC, UL and CSA standards
require the phase that is used for the power supply to be used for the inputs as
well. If this is not the case, “EZ” will not detect the switch power level and can be
damaged by overvoltages.

List of Operands

I1 Input, float switch for tank 1
I2 Input, float switch for tank 2
I3 Input, float switch for tank 3
I4 Input, acknowledgement

button

M1 Marker relay, acknowledged

full message from tank 1

M2 Marker relay, acknowledged

full message from tank 2

M3 Marker relay, acknowledged

full message from tank 3

Q1 Output, indicator light for

tank 1

Q2 Output, indicator light for

tank 2

Q3 Output, indicator light for

tank 3
Q4 Output, Alarm
T1 Timing relay with 3 sec.

ON delay →→→→ delay after tank 1

full message
T2 Timing relay with 3 sec. ON

delay →→→→ delay after tank 2 full

message
T3 Timing relay with 3 sec. ON

delay →→→→ delay after tank 3 full

message
T4 Single-pulse timing relay →→→→

Alarm ON set pulse
T5 Single-pulse timing relay →→→→

Alarm ON set pulse
T6 Single-pulse timing relay →→→→

Alarm ON set pulse
T7 Timing relay flashing for

0.5 sec. →→→→ New value signal

Benefits

■ Implemented functions:
❑ 3 x ON-delayed timing relays

❑ 1 x flash/blink relay
❑ 3 x auxiliary contactors

■ Less wiring required

■ Takes up less space than conven-

tional systems

For more information visit: www.EatonElectrical.com AP05013001E

Examples

EZ Applications

Application Guide

Effective: April 2005 Page 39

Customer: Program:

Date: Page:

Tank installation

8/13/98

I

I2 2

M

11

M

1

M

1

I4

M

M

2

M2

4

I

Comment:

T

7

T

7

Q1

M 1

T1T

Q2

M

2

Tank 1 full (S1), H1 flashes

H1 maintained light

by acknowledgement button

Timing relay for alarm

Tank 2 full (S2), H2 flashes

H2 maintained light

by acknowledgement button

Example 7

1

T2

T

Figure 40. EZ Control Relay Circuit Diagram

Timing relay for alarm

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 40 Effective: April 2005

EZ Applications

I

3

T

1

T

2

T3

T

4

Tank installation

8/13/98

M3

M3

M3

I4

T7

Q3

M 3

T3T

T4T

T5T

T6T

4

QS

Page:

Comment:

Tank 3 full (S3), H3 flashes

H3 maintained light

by acknowledgement button

Timing relay for hooter

Pulse for alarm from tank 1

Pulse for alarm from tank 2

Pulse for alarm from tank 3

Alarm ON for tank 1 after 3 seconds

Customer: Program:

Date:

Example 7

2

T5

T6

4

I

R

T

Q4

T7

Figure 41. EZ Control Relay Circuit Diagram

Alarm ON for tank 2 after 3 seconds

Alarm ON for tank 3 after 3 seconds

Alarm OFF with acknowledgement button S4

Clock for flashing signal

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 41

Customer: Program:

Date:

Timing relays

XX X

Timing relays

Timing relays

Tank installation

8/13/98

03S

:

TRG T

RES

00S

:

TRG T

RES

00

00

Page:

03 00 03 00

S S

::

1

+

4

+

TRG T

RES

00 00 00 00

S S

::

TRG T

RES

Example 7

3

:::

2

+

:::

5

+

TRG T

RES

TRG T

RES

3

+

6

+

00S

:

50

TRG T

RES

::

7

+

TRG T

RES

Figure 42. EZ Control Relay Parameters

Note: The specified time of 0 seconds in the
timing relay produces a pulsing signal of
the same length as one “EZ” cycle time.

:::

TRG T

RES

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 42 Effective: April 2005

EZ Applications

Access Monitoring for a
Parking Garage

Task

To monitor the occupancy of a com­pany parking garage. Cars can enter
the garage provided that there are still
some spaces free. Access is controlled
by a barrier system. The occupancy of
the garage is signaled by a “Full/
Empty” display.

Overview Drawing

Figure 43. Overview

Operating Description

Entry and Exit

Access to the garage is monitored by a
swipe card reader. If the card is valid,
contact S3 is closed briefly. When a
vehicle leaves the garage, contact S2
is closed via an induction loop embed­ded in the ground. A display panel
with the message “Full” or “Spaces
free” at the point of entry should indi­cate whether there are still parking
spaces available. If voltage is present
at signal input K2, the display panel
should read “Full”, otherwise it should
read “Spaces free”. The barrier opens
when a voltage pulse is applied to K1
for 2 seconds, and it closes automati­cally when a vehicle has passed
through or after a set time has
elapsed.

Counting the Vehicles

Incoming and outgoing vehicles
should be counted by the “EZ” control
relay. The maximum number of vehi­cles that can be parked can be set on
the “EZ”. Vehicles may enter if there
are parking spaces available. The
counter can be reset to zero via the
key switch S5 in order to establish a
baseline.

Manual Operation

The garage attendant should be able
to open the barrier at any time using
button S4, regardless of whether the
garage is full or not.

Faults

A fault in the barrier system, which is
signaled via make contact S1, is dis­played by flashing indicator light H1 in
the garage attendant’s booth.

Maintenance

The barrier can be opened by pressing
function button P2 (Up arrow) on the
“EZ” control relay.

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 43

Control Circuit

F1

L1

N

S1

F1 16 A, char. B miniature circuit-breaker
H1 Fault flashing indicator light
K1 Barrier driving circuit
K2 Display panel driving circuit
S1 Barrier fault indicator
S2 Contact for induction loop
S3 Contact for swipe card reader
S4 Open barrier button
S5 Reset counter key switch

S2

Q1 Q2 Q3 Q4

S3

S4

S5

L

EZ512-AC-R

12 12 12 12

K1

I1 I2 I3 I4 I5 I6 I7 I8

N N

DEL

ESC

K2

ALT

OK

H1

List of Operands

C1 Vehicle counter
I1 Input, fault barrier
I2 Input, contact for induction

loop

I3 Input, contact for swipe card

reader
I4 Input, open barrier button
I5 Input, reset counter key

switch
P2 Up arrow cursor button =

open barrier
Q1 Output, open barrier
Q2 Output, display panel
Q3 Output, fault indicator light
T1 Single 2-second single-pulse

timing relay = open barrier

pulse
T2 Timing relay with 1-second

flashing cycle = barrier fault

flashing message

Benefits

■ Implemented functions:
❑ 1 x flash/blink relay

❑ 1 x up/down counter with reset

function

❑ 1 x ON-delayed timing relay

■ Compact system

■ Easy program duplication with pro-

gram transfer

Figure 44. Control Circuit

CAUTION

The safety requirements of the applicable VDE, IEC, UL and CSA standards
require the phase that is used for the power supply to be used for the inputs as
well. If this is not the case, “EZ” will not detect the switch power level and can be
damaged by overvoltages.

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 44 Effective: April 2005

Examples

EZ Applications

I

3

I2

I4

P2

T1

I

5

I

2

I2

I

3

Parking garage

8/13/98

C1

C 1

Comment:

T

T1

Q1

C1R

C1D

1

CC

Open pulse from swipe card reader

Induction loop

Attendant

Maintenance

Barrier opens

Counter reset by S5

Counting direction DOWN

Car exiting = Counter - 1

Car entering = Counter + 1

Customer: Program:

Date: Page:

Example 8

1

C1

I1

2

T

Q2

T2T

Q3

Figure 45. EZ Control Relay Circuit Diagram

Full

Fault at barrier

Flashing signal in attendant’s booth

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 45

Customer: Program:

Date:

Timing relays

Up and down counters

Parking garage

8/13/98

02S

:

TRG T

RES

00 30

DIR

CNT

RES

00

Page:

S

1

+

C

1

+

01 00

::

TRG T

RES

DIR

CNT

RES

:::

Figure 46. EZ Control Relay Parameters

Example 8

2

2

+

C

TRG T

RES

DIR

CNT

RES

C

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 46 Effective: April 2005

EZ Applications

Time-Controlled Lighting
System

Task

To activate the lighting in rarely-visited
rooms in a library only when turned on
by the user in order to save energy.
The user may select how long he
wants the lights to remain on. It should
also be possible to switch the lights on
and off permanently at a central
switch.

Overview Drawing

Figure 47. Overview

Operating Description

The four groups of lights (H1 to H4) in
a library should only be switched on at
a reader’s request. Two flush-mounted
buttons (S1 to S8) are provided for this
purpose at the end of an area of shelv­ing. If the reader presses the button
briefly, the light will come on for just
5 minutes. More pressure on the
button will light the area for a half­hour period. All the lights can be
turned on and off for cleaning via the
central flush-mounted button S9.

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 47

Control Circuit

F1

L1

N

S1

S2

S3

S4

L

EZ512-AC-R

12 12 12 12

Q1 Q2 Q3 Q4

H1

S5

I1 I2 I3 I4 I5 I6 I7 I8

N

N

DEL

ESC

H2

S6

H3

ALT

S7

S8

S9

OK

H4

F1 16 A, char. B miniature circuit-breaker
H1 Lights in area A
H2 Lights in area B
H3 Lights in area C
H4 Lights in area D
S1 – S2 Light switch in area A
S3 – S4 Light switch in area B
S5 – S6 Light switch in area C
S7 – S8 Light switch in area D
S9 Central ON/OFF light switch

Figure 48. Control Circuit

CAUTION

The safety requirements of the applicable VDE, IEC, UL and CSA standards
require the phase that is used for the power supply to be used for the inputs as
well. If this is not the case, “EZ” will not detect the switch power level and can be
damaged by overvoltages.

Benefits

■ Implemented functions:
❑ 12 x ON-delayed timing relays

❑ 1 x impulse changeover relay

■ Less wiring required

■ Takes up less space than conven-

tional systems

List of Operands

C1 Counter, ON duration 5 min.,

area A

C2 Counter, ON duration 30 min.,

area A

C3 Counter, ON duration 5 min.,

area B

C4 Counter, ON duration 30 min.,

area B

C5 Counter, ON duration 5 min.,

area C

C6 Counter, ON duration 30 min.,

area C

C7 Counter, ON duration 5 min.,

area D

C8 Counter, ON duration 30 min.,

area D
I1 Input, light switch S1/S2, area A
I2 Input, light switch S3/S4, area B
I3 Input, light switch S5/S6, area C
I4 Input, light switch S7/S8, area D
I5 Input, central ON/OFF light switch
M1 Marker relay, buffer memory,

light in area A ON for 5 min.
M2 Marker relay, buffer memory,

light in area A ON for 30 min.
M3 Marker relay, buffer memory,

light in area B ON for 5 min.
M4 Marker relay, buffer memory,

light in area B ON for 30 min.
M5 Marker relay, buffer memory,

light in area C ON for 5 min.
M6 Marker relay, buffer memory,

light in area C ON for 30 min.
M7 Marker relay, buffer memory,

light in area D ON for 5 min.
M8 Marker relay, buffer memory,

light in area D ON for 30 min.
M9 Marker relay, buffer memory,

light ON/OFF at central switch
Q1 Output relay, light area A
Q2 Output relay, light area B
Q3 Output relay, light area C
Q4 Output relay, light area D
T1 Timing relay with 2-sec. ON

delay = short/long ON duration,

area A
T2 Timing relay with 2-sec. ON

delay = short/long ON duration,

area B
T3 Timing relay with 2-sec. ON

delay = short/long ON duration,

area C
T4 Timing relay with 2-sec. ON

delay = short/long ON duration,

area D
T8 Flashing 20-sec. cycle. for short/

long ON duration

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 48 Effective: April 2005

Examples

EZ Applications

I5

I1

M1

I1

M

2

M

1

M2

C

1

Library lighting

8/13/98

Q1

T1

Q1

T8

T8

M1

T

T8

9

M

TT

1

1

M

M2

C1C

C2C

Comment:

Central light ON/OFF switch

Switch S1/S2 short pressure

Switch S1/S2 long pressure

Counter 1 Duration: 5 minutes

Counter 2 Duration: 30 minutes

5 min.

Customer: Program:

Date: Page:

Example 9

1

R

R

Q 1

C1

C2

C2

M9

1

I

M2

Figure 49. EZ Control Relay Circuit Diagram

Light at output 1 ON 30 min.

via central ON switch

Reset counter 1 and 2

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 49

I2

M3

I2

M4

M3

M

4

C

3

C4

M

9

Library lighting

8/13/98

Q2

T2

Q2

T8

T8

M3

M4

T

T2

M3

4

M

C3C

C4C

Q2

C3R

Page:

Comment:

Switch S3/S4 short pressure

Switch S3/S4 long pressure

Counter 3 Duration: 5 minutes

Counter 4 Duration: 30 minutes

5 min.

Light at output 2 ON 30 min.

via central ON switch

Customer: Program:

Date:

Example 9

2

R

T

C 4

T3

M5

I2

I3

5

M

Q3

Figure 50. EZ Control Relay Circuit Diagram

Reset counter 3 and 4

Switch S5/S6 short pressure

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 50 Effective: April 2005

EZ Applications

Customer: Program:

Date:

Library lighting

8/13/98

I3 T3

M6

M5

M6

C

C

M

I3

I

Q3

T8

T8

5

M5

M6

6

9

4

R

6

M

C5C

C6C

Q3

C5

C6R

T4T

Page:

Comment:

Switch S5/S6 long pressure

Counter 5 Duration: 5 minutes

Counter 6 Duration: 30 minutes

5 min.

Light at output 3 ON 30 min.

via central ON switch

Reset counter 5 and 6

Example 9

3

M7

I4

8

M

7

M

4

Q

T4

Q4

T

8

M 7

M8

CC7

Figure 51. EZ Control Relay Circuit Diagram

Switch S7/S8 short pressure

Switch S7/S8 long pressure

Counter 7 Duration: 5 minutes

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 51

Customer: Program:

Date:

Library lighting

8/13/98

M8 T8

7

8

I4

M7

M8

C

C

C

8

C

Q4

C7R

C8R

Page:

Comment:

Counter 8 Duration: 30 minutes

5 min.

Light at output 4 ON 30 min.

Reset counter 7 and 8

Example 9

4

Figure 52. EZ Control Relay Circuit Diagram

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 52 Effective: April 2005

EZ Applications

Customer: Program:

Date:

Timing relays

XX X

Timing relays

X

Library lighting

8/13/98

02S

:

TRG T

RES

02S

:

TRG T

RES

00

00

Page:

02 00 02 00

S S

::

S

::

TRG T

RES

30 00

TRG T

RES

1

+

4

+

Example 9

5

:::

2

+

:::

8

+

TRG T

RES

TRG T

RES

Figure 53. EZ Control Relay Parameters

3

+

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 53

Customer: Program:

Date:

Up and down counters

Up and down counters

Up and down counters

Library lighting

8/13/98

00 05

DIR

C

CNT

RES

00 30 00 05 00 30

DIR

CNT

RES

00 05 00 30

DIR

CNT

RES

1

+

C

4

+

C

7

+

Page:

00 30 00 05

DIR

CNT

RES

DIR

CNT

RES

DIR

CNT

RES

Example 9

6

C

2

+

C

5

+

C

8

+

DIR

CNT

RES

DIR

CNT

RES

DIR

CNT

RES

C

3

+

C

6

+

C

Figure 54. EZ Control Relay Parameters

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 54 Effective: April 2005

EZ Applications

Refrigeration Control System

Task

To turn the compressors of the
refrigeration system in a hotel on and
off in response to the system pressure.
The system pressure is supplied by the
“EZ” control relay via analog input I8.
The value at I8 is compared with set­point values and the switching points
are derived from the comparison
value.

Overview Drawing

Figure 55. Overview

Operating Description

The pressure of the refrigeration sys­tem is compared with setpoint values.
Timers are connected upstream of the
outputs so that pressure fluctuations
in the system do not cause the com­pressors to turn on immediately.

Setpoint Values

Output Q1:
Set: A1 ≥ 1.8 bar
Time T1 = 5 sec
Reset: A5 ≤ 1.7 bar

Output Q2:
Set: A2 ≥ 2.0 bar
Time T2 = 20 sec
Reset: A6 ≤ 1.9 bar

Output Q3:
Set: A3 ≥ 2.2 bar
Time T3 = 20 sec
Reset: A7 ≤ 2.1 bar

Output Q4:
Set: A4 ≥ 2.4 bar
Time T4 = 20 sec
Reset: A8 ≤ 2.3 bar

For more information visit: www.EatonElectrical.com AP05013001E

Control Circuit

L1
N
PE

EZ Applications

Application Guide

Effective: April 2005 Page 55

S0

F1

G1

~

F2

-

0V

V

+24

S1

24V

EZ512-DC-R

12 12 12 12

Q1 Q2 Q3 Q4

K1

I1 I2 I3 I4 I5 I6 I7 I8

0V

0V

K2

B1 Pressure sensor
F1 16 A, char. B miniature circuit-breaker
F2 Miniature circuit-breaker (optional)
G1 Power supply unit 230V AC/24V DC
K1 – K4 Compressor 1 – 4
S0 Emergency stop
S1 ON/OFF key switch

DEL

ESC

K3

ALT

P

B1

0-10V

OK

K4

Figure 56. Control Circuit

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 56 Effective: April 2005

EZ Applications

Load Circuit

L1
L2
L3

N

PE

Q1

K1

M

3 ~

M1

Figure 57. Load Circuit

4.43

4.44

K2

Q2

M

3 ~

M2

4.43

4.44

K3

Q3

3 ~

M3

List of Operands

A1 Comparator, motor 1 ON after

T1 has elapsed

A2 Comparator, motor 2 ON after

T2 has elapsed

A3 Comparator, motor 3 ON after

4.43
Q4

4.44

K4

M

3 ~

M4

M

4.43

4.44

T3 has elapsed

A4 Comparator, motor 4 ON after

T4 has elapsed
A5 Comparator, motor 1 OFF
A6 Comparator, motor 2 OFF
A7 Comparator, motor 3 OFF
A8 Comparator, motor 4 OFF
I1 Input, system ON/OFF
I8 Input, comparison voltage from

pressure sensor
Q1 Output, motor 1
Q2 Output, motor 2
Q3 Output, motor 3
Q4 Output, motor 4
T1 Timing relay, ON delay, motor 1
T2 Timing relay, ON delay, motor 2
T3 Timing relay, ON delay, motor 3
T4 Timing relay, ON delay, motor 4

Benefits

■ Implemented functions:
❑ 4 x ON-delayed timing relays

■ Processing of pressure values

(analog values)

■ Password function protects against

unauthorized access

For more information visit: www.EatonElectrical.com AP05013001E

Examples

EZ Applications

Application Guide

Effective: April 2005 Page 57

Customer: Program:

Date: Page:

Refrigeration system

8/13/98

I

T

T

T3

T

A

A1

1

A2

A3

A4

1

2

4

5

T

T1

T2T

T3T

T4T

Q1S

Q2S

Q3S

Q4S

QR

1

Comment:

System switched on and pressure > 1.8 bar

Pressure > 2.0 bar

Pressure > 2.2 bar

Pressure > 2.4 bar

Compressor 1 (M1) ON after 5 sec.

Compressor 2 (M2) ON after 20 sec.

Compressor 3 (M3) ON after 20 sec.

Compressor 4 (M4) ON after 20 sec.

Pressure < 1.7 bar, compressor 1 OFF

Example 10

1

A6

A7

8

A

QR2

QR

Q4

R

Figure 58. EZ Control Relay Circuit Diagram

Pressure < 1.9 bar, compressor 2 OFF

3

Pressure < 2.1 bar, compressor 3 OFF

Pressure < 2.3 bar, compressor 4 OFF

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 58 Effective: April 2005

EZ Applications

Customer: Program:

Date:

Timing relays

XX X

Timing relays

X

Refrigeration system

8/13/98

05S

:

TRG T

RES

20S

:

TRG T

RES

00

00

Page:

20 00 20 00

S S

::

1

+

4

+

TRG T

RES

::

TRG T

RES

Example 10

2

:::

2

+

:::

TRG T

RES

TRG T

RES

Figure 59. EZ Control Relay Parameters

3

+

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 59

Customer: Program:

Date:

Analog comparators

I8

18

Analog comparators

I8

24

Analog comparators

Refrigeration system

8/13/98 3

ANALOG ANALOG ANALOG

I8

A A

12

.

ANALOG ANALOG ANALOG

.

ANALOG ANALOG ANALOG

20

.

I8

A A

45A6

17

.

Page:

Example 10

I8

22

I8

19

A

3

.

.

I8

21

.

I8

A A

78

23

Figure 60. EZ Control Relay Parameters

A

.

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 60 Effective: April 2005

EZ Applications

Perimeter Advertising in a
Stadium

Task

The time-dependent control of four
advertising panels, each with three
sides. Each side is to be visible for 30
seconds, after which the next side is to
be turned to the front.

Overview Drawing

Figure 61. Overview

Operating Description

Start

The Start/Stop button S5 is used to
start the procedure for all four panel
fixture electrical strips. The visible
advertising panel is on view for a
variable time (controlled via T1 to T4).
It should be possible to stop the entire
procedure by pressing the S5 button
again.

Rotation

Once the set time has elapsed, the
motor (M1 to M4) associated with the
strip must start automatically. The
strip rotates to display the next adver­tising panel. Once the advertising
panel is in the correct position, this is
signaled via the corresponding limit
switch (S1 to S4) and the motor is
turned off. To enable the strip to leave
the limit switch position, disconnec­tion must be bypassed, again for a
variable time (controlled via T5 to T8),
when the rotation procedure starts.

Testing and Maintenance

It must be possible to activate the rota­tion procedure manually in order to be
able to test the individual strips during
installation and assembly and to
replace the advertising panels.
The cursor buttons P1 to P4 on the
“EZ” control relay are used to activate
a single turn for each individual strip
and button S6 activates a single turn of
all the strips together.

Note: The P buttons are activated in the
Special menu. Press ALT and DEL simulta­neously to change to the Special menu.

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 61

Circuit Diagram

F1

L1

N

S1

S2

S3

S4

S7

L

S8

S9

S10

M
1~

M1

F1 16 A, char.B miniature circuit-breaker
M1 Motor for strip 1
M2 Motor for strip 2
M3 Motor for strip 3
M4 Motor for strip 4
S1 Limit switch for strip 1
S2 Limit switch for strip 2
S3 Limit switch for strip 3
S4 Limit switch for strip 4
S5 Start/Stop button
S6 Turn button
S7 – S10 Emergency stop

N

EZ512-AC-R

12 1 2 12 12

Q1 Q2 Q3 Q4

M2

S5

S6

I1 I2 I3 I4 I5 I6 I7 I8

N

ALT

DEL

OK

ESC

M3

M
1~

M

1~

M4

List of Operands

I1 Input, limit switch for strip 1
I2 Input, limit switch for strip 2
I3 Input, limit switch for strip 3
I4 Input, limit switch for strip 4
I5 Input, Start/Stop button
I6 Input, Turn button
M1 Marker relay, buffer memory,

Start/Stop
P1 Cursor button 1 x Turn strip 1
P2 Cursor button 1 x Turn strip 2
P3 Cursor button 1 x Turn strip 3
P4 Cursor button 1 x Turn strip 4
Q1 Output, motor for strip 1
Q2 Output, motor for strip 2
Q3 Output, motor for strip 3
Q4 Output, motor for strip 4
T1 Timing relay with 30-sec. ON

delay => Advert viewing time,

strip 1
T2 Timing relay with 30-sec. ON

delay => Advert viewing time,

M
1~

strip 2
T3 Timing relay with 30-sec. ON

delay => Advert viewing time,

strip 3
T4 Timing relay with 30-sec. ON

delay => Advert viewing time,

strip 4
T5 Single 1-sec. pulse timing relay

=> Block limit switch for starting

strip 1
T6 Single 1-sec. pulse timing relay

=> Block limit switch for starting

strip 2
T7 Single 1-sec. pulse timing relay

=> Block limit switch for starting

strip 3
T8 Single 1-sec. pulse timing relay

=> Block limit switch for starting

strip 4

Figure 62. Circuit Diagram

CAUTION

The safety requirements of the applicable VDE, IEC, UL and CSA standards
require the phase that is used for the power supply to be used for the inputs as
well. If this is not the case, “EZ” will not detect the switch power level and can be
damaged by overvoltages.

AP05013001E For more information visit: www.EatonElectrical.com

Benefits

■ Implemented functions:
❑ 8 x ON-delayed timing relays

❑ 1 x impulse changeover relay

■ Less wiring required

■ Takes up less space than conven-

tional systems

■ Dwell-time of each strip can be

individually selected

Application Guide

Page 62 Effective: April 2005

Examples

EZ Applications

Customer: Program:

Date: Page:

Stadium perimeter advertising

8/13/98

Comment:

I

5

M1 Q1 TT1

Q

2

3

Q

4

Q

T

1

P

1

I6

I

1

5

T

M1

TT2

TT3

T4T

Q1S

T5T

QR1

Start/Stop turning

Time for strip 1

Time for strip 2

Time for strip 3

Time for strip 4

Start turning strip 1

Bypass disconnection of strip 1

Stop turning strip 1

Example 11

1

R

Q2S

T6T

Q2

T2

P2

6

I

I

2

6

T

Figure 63. EZ Control Relay Circuit Diagram

Stop turning strip 2

Bypass disconnection of strip 2

Stop turning strip 2

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 63

Customer: Program:

Date:

Stadium perimeter advertising

8/13/98

T

3

P3 TT7

I6

I

3

T4

PI4

6

I4

T

T 8

7

S

Page:

Comment:

Q3

QR3

Q4S

T8T

QR4

Start turning strip 3

Bypass disconnection of strip 3

Stop turning strip 3

Stop turning strip 4

Bypass disconnection of strip 4

Stop turning strip 4

Example 11

2

Figure 64. EZ Control Relay Circuit Diagram

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 64 Effective: April 2005

EZ Applications

Customer: Program:

Date:

Timing relays

XX X

Timing relays

X

Timing relays

Stadium perimeter advertising

8/13/98

30S

:

TRG T

RES

:

TRG T

RES

00

30S

00

Page:

S S

30 00 30 00

::

1

+

4

+

TRG T

RES

S S

01 00 01 00

::

TRG T

RES

Example 11

3

:::

2

+

:::

5

+

TRG T

RES

TRG T

RES

3

+

6

+

01S

:

TRG T

RES

00

S

::

7

+

Figure 65. EZ Control Relay Parameters

01 00

:::

TRG T

RES

8

+

TRG T

RES

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 65

Rolling Door Control

Task

To automatically control the roll-up
security door at the entrance to an
underground garage. The door should
open on request and then close auto­matically after a set time. It should also
be possible to close the door upon
request. The door is locked at certain
times of day and days of the week. The
limit switches and mechanical opera­tion of the door should be constantly
monitored.

Overview Drawing

Figure 66. Overview

Operating Description

Opening the Rolling Door

The rolling door can be opened from
outside via a swipe card reader and/or
the key switch S6. Contact K1 closes
briefly once the swipe card has been
checked. It should be possible to lock
the entrance at certain, variable times
of the day and on certain days of the

1), although it should always

week (
be possible to open the door using the
key switch S5.

The door must be opened using the
pull switch S7 in order to leave the
garage.

Closing the Rolling Door

Once a car has driven into the garage,
the driver can close the door manually
via S7. If the driver does not use the
pull switch, the door will automatically
close after a set time (T3). The door
can be opened and closed manually
using the buttons S4 and S3 in the
control room.

Security

Door closing should be indicated by a
brief audible signal (H3). At the same
time, the red warning lights H1 and H2
light up at the entrance and exit. If
there is a person, vehicle or other
object under the door while it is clos­ing, the procedure will be stopped or
prevented via the contact in the safety
bar (K2) and/or light barrier (K3). The
door will either immediately open fully
or will remain open. If the safety bar is
triggered, there is an audible signal
and warning lights H1 and H2 light up.

The “Open door” function is disabled
by the safety bar when the door is
closed (limit switches actuated) in
order to prevent break-in and
vandalism.

The contact bar can be tested by
triggering the alarm while the door
is open.

Pressing the emergency stop button
stops all movement of the door. Warn­ing lights H1 and H2 will start to flash
and the audible signal will start.

If the door is closed, the alarm cannot
be triggered via the emergency stop
button. The “Open door” command
must be given to start the flashing
lights and the audible signal in order
to indicate that the emergency stop
button has been pressed.

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 66 Effective: April 2005

EZ Applications

Break contacts should be used for the
emergency stop, safety bar and limit
switch functions. The emergency stop
button and safety bar must be wired
up as shown in the following circuit
diagram. This will guarantee that the
opening and closing procedure during
an emergency stop, and the door clos­ing procedure when the safety bar is
tripped, work independently of the
electronic circuit.

The following standards must be
observed:

DIN EN 60 335-1 (VDE 0700 part 1)

DIN 57 700-238 VDE 0700 part 238)

German Workplace Directive
ASR 11/1-5

ZH1/494 and ZH1/580.1 Safety Rules

Faults

Defective limit switches S1 and S2
(door opened S2/door closed S1) and
mechanical faults in the door must be
detected. If a limit switch is not work­ing correctly, the drive should be shut
down after a variable time (T1 and T2)
and the warning lights H1 and H2
should start to flash. The message can
be cleared by pressing and resetting
the emergency stop button S8. If the
emergency stop button S8 is pressed,
the warning lights should light up and
a continuous audible signal should
start.

Control Circuit

F1

L1

N

S1

S2

S3

EZ512-AC-RC

12 1 2 12 12

Q1 Q2 Q3 Q4

K4

F1 16 A, char. B miniature circuit-breaker
H1 Internal warning light
H2 External warning light
H3 Audible signal
K1 Contact for swipe card reader
K2 Contact for safety bar
K3 Contact for light barrier
K4 Close door contactor
K5 Open door contactor
S1 Door closed limit switch
S2 Door opened limit switch
S3 Close door button
S4 Open door button
S5 Open door key switch
S6 Open door key switch
S7 Pull switch
S8 Emergency stop button
S9 Emergency stop button

K1

S6

L

I1 I2 I3 I4 I5 I6 I7 I8

N

N

K5

K4

K5

DEL

ESC

S5

H1

ALT

S4

K3

S7S9S8

K2

OK

H2

H3

Figure 67. Control Circuit

CAUTION

The safety requirements of the applicable VDE, IEC, UL and CSA standards
require the phase that is used for the power supply to be used for the inputs as
well. If this is not the case, “EZ” will not detect the switch power level and can be
damaged by overvoltages.

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 67

Load Circuit

L1
L2
L3

N
PE

Q1

K4

Figure 68. Load Circuit

Note: The electrical interlock may be omit­ted if a reversing contactor with a mechani­cal interlock is used.

3 ~

M1

List of Operands

I1 Input, door closed limit switch
I2 Input, door opened limit switch
I3 Input, close door button
I4 Input, open door key switch/

contact swipe card reader

I5 Input, open door button/open

door key switch
I6 Input, pull switch
I7 Input, safety bar/light barrier

triggered signal
I8 Input, emergency stop triggered

signal

K5

M

M1 Marker relay, buffer memory,

close door
M2 Marker relay, buffer memory,

open door
M3 Marker relay, buffer memory,

close
M4 Marker relay, buffer memory,

open
M5 Marker relay, buffer memory,

pull switch
M6 Marker relay, buffer memory,

time monitoring of limit switch
Q1 Output relay, close door
Q2 Output relay, open door
Q3 Output relay, warning lights
Q4 Output relay, audible signal
T1 ON-delayed timing relay,

monitoring of door closed limit

switch
T2 ON-delayed timing relay,

monitoring of door opened limit

switch
T3 Single-pulse timing relay,

warning time before door closes
T4 ON-delayed timing relay, time

until door closes automatically
T5 Single-pulse timing relay, open/

close changeover delay
T6 Flashing timing relay for

warning lights

1 Switching contact time 1 =

operating time

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 68 Effective: April 2005

Examples

EZ Applications

Customer: Program:

Date:

Rolling door control

8/13/98

M

3

I1

I

8

M4

M6

M4

2

I

8

I

3

S

R

M1S

M1R

M2

M

2

Page:

Comment:

Door closing

End door closing via limit switch

End door closing via emergency stop

End door closing via door opening

End door closing via limit switch monitoring

Door opening

End door opening via limit switch

End door closing via emergency stop

End door closing via door opening

Lighting, example 12

1

MM6

II3

6

I6

T4

2I

M 5M

2

M3

Figure 69. EZ Control Relay Circuit Diagram

End door closing via limit switch monitoring

Door closing via S3

Door closing via S7

Door closing via Automatic

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 69

Customer: Program:

Date:

Rolling door control

8/13/98

I

4

I5

I6 I1

I6

M1 M 5

I

I6

I

I1

7

3MM

2

1

5

I

I7

M4

I 8

Page:

Comment:

1

M4

M5

TT3

TT

T

T 5

Door opening via S6/K1

Door opening via S5

Door opening via S7

Door opening via K2

Pull switch

Warning time before door closing

4

Automatic closing

Open/close changeover delay

Example 12

2

MM2

M1

M3

5

T

5

T

2

3

T

Q1

Q2

Figure 70. EZ Control Relay Circuit Diagram

Door closing

Door opening

AP05013001E For more information visit: www.EatonElectrical.com

Application Guide

Page 70 Effective: April 2005

EZ Applications

Customer: Program:

Date:

Rolling door control

8/13/98

M

1

T6 T3

7I1

I

8

M3

I

M4

I7 I1

I

8

Q

1

3

M

M4

T

Q3

Q4

T2

Page:

Comment:

Warning lights

Audible signal

Monitoring open door limit switch

Example 12

3

T

S

R

T

M6

M6

Q2

I

1

I

2

I

7

1

T

2

T

Figure 71. EZ Control Relay Circuit Diagram

1

Monitoring close door limit switch

Limit switch time monitoring

For more information visit: www.EatonElectrical.com AP05013001E

EZ Applications

Application Guide

Effective: April 2005 Page 71

Customer: Program:

Date:

Timing relays

X

Timing relays

X

Time switches

ON

OFF

Rolling door control

8/13/98

01S

:

:

MO F R S AS

07 00 A

18 00

50

TRG T

RES

30S

00

TRG T

RES

U

-

:

:

Page:

X

S S

01 50 01 00

::

1

+

4

+

1

+

TRG T

RES

S S

00 10 00 25

::

TRG T

RES

-

07 00 B

ON

OFF

:

15 00

:

:::

:::

Example 12

4

07 00

ON

OFF

14 00

TRG T

RES

TRG T

RES

-

:

:

2

+

5

+

1 1

+

3

+

6

+

C

+

Figure 72. EZ Control Relay Parameters

AP05013001E For more information visit: www.EatonElectrical.com

Eaton Electrical Inc.
1000 Cherrington Parkway
Moon Township, PA 15108-4312
USA
tel: [phone]
www.EatonElectrical.com

© 2005 Eaton Corporation
All Rights Reserved
Printed in USA
Publication No. AP05013001E/CPG
April 2005