Crouzet Extension relay Catalog Page

Safety relay

➜ Extension relay

■ Extending the number of contacts in a safety relay

■ Used to increase the breaking capacity of the main unit

■ "CE" conforming product / BG approved

■ Safety via redundancy and self-checking

■ 3 "N/O" safety contacts with linked contacts

6 A / 250 V AC

■ 1 "N/C" return loop

Specifications

Type Supply voltage Connections Weight (g) Code

KZE3-XS 24 V AC DC Screw terminals 310 85 100 936

KZEC3-XS 24 V Spring terminals 310

General characteristics

Supply

Operating range - 15 % / + 10 % of Un for AC

Precision

Synchronisation difference < 25 ms
Maximum response time on emergency stop at Un 50 ms

Output specification

Number of data circuits
Return loop

Function and use

Max. absorbed power AC 1.6 VA / DC 2 W
Dielectric strength 2.95 kV according to CEI 664-1
Resistance to tracking Material group III

EMC immunity according to EN 50082-2

Radiated electromagnetic field 10 V/m Level 3 acc. to IEC 1000.4.2

Electrostatic discharge 8 kV in the air acc. to IEC 1000.4.2
Shock waves Common mode 1 kV acc. to IEC 1000.4.5
Radio frequencies in common mode 10 Vrms Level 3 acc. to IEC 1000.4.6

40 / 260 V AC Screw terminals 310 85 100 937

85 101 936

40 - 260 V Spring terminals 310 85 101 937

- 15 % / + 15 % of Un for DC

3"NO" AgSnO2 contact
1 "NC" AgSnO2 contact

80 MHz to 1GHz / 900 MHz (ENV 50140/204)

150 kHz to 80 MHz (ENV 50141) acc. to IEC 1000.4.11

10

Dimensions

KZE3-XS Mounting - Removing

113

90

68,6

118

90

22,5

Principles

Control devices :

Depending on the degree of safety required, the KZE3-XS can be controlled by one or two channels. In most cases, control by one channel will be
sufficient. Please consult your inspection office for further information.

Control devices :

The KZE3-XS has three "N/O" safety contacts (13-14/23-24/33-34) and a return loop (X1-X2) which must be included in the "start / validation" line (Y1-Y2)
of the main unit. One or more control devices may be wired up to the breaking capacity of the safety contacts : 1500 VA.
However, to limit internal heating in the KZE3-XS, it is advisable not to exceed 10 A thermal for all three contacts.

Extending the number of contacts :

It is possible to wire several extension KZE3-XS units in cascade. All the return loops (X1-X2) will be in series with the "start/validation" line (Y1-Y2) of the
main unit.

Connections

13 23 33

A1 X1 X 2

PWR

OUT

13 23 33 41

14 24 41 42

KZE3-XS

A2 X1 X2

2414 34

A1-A2 Power supply-Control device (s)
41-42 Return contact
13-14/23-24/33-34 "N/O" safety contacts
X1-X2 Internal return loop

Applications

Example of wiring
KZE3-XS controlled by a single
channel as an extension of a KNA3-XS

24 V

1

33

2313

2

c1

c2

A1 Y1 Y2

13 23 33

14 24 34

A2 42

41

14 24 34

13

33

23

A1 X1 X2

KZE3-XSKNA3-XS

13 23

33

14 24 34

A2 42

41

14 24 34

Two KZE3-XS as extensions of a KNA3-XS

24 V

1

3

2

c1

c2

2313

A1 Y1 Y2

13 23 33

14 24 34

A2 42

41

14 24 34

13

33

23

A1 X1 X2

KZE3-XSKNA3-XS

13 23

14 24 34

A2 42

41

14 24 34

13

33

33

33

23

A1 X1 X2

KZE3-XS

13 23

33

14 24 34

A2 42

41

14 24 34

C2C1

0V

Emergency stop

B

Start

C

X1-X2 of the KZE3-XS bridged

D

KNA3-RS with KZE3-XS extension unit

+ 24 V

1

Y11

Y12

A1

2

Start

B

Emergency stop

C

0V

13 23 33

KNA3-RS

A2 Y21 Y22

X1

Y2 51 52 41

14 24 34

Y1X2 14 24 34

C4

C2

C1

0V

C4C3

C6

C5

Emergency stop

B

Start

C

13

3313

23

41

23

A1 X1 X2

KZE3-XS

13 23

33

33

c1

c2

C3

C5

C8

C7

C6

C9

10

c3

42

42

C1

C2

14 24 34

A2 42

41

14 24 34

C4C3

C5

c4

c5