Crouzet Emergency stop Catalog Page

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Safety relay

➜ Emergency stop

KNA3-XS / KNA3-RS / KZP3-RS

■ "Emergency stop" and "mobile guard monitoring"

functions

■ Control device with one or two channels

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

6A / 250 AC

■ 1 "N/C" signalling contact

■ Level 4 according to NF.EN 954-1

KNA3-RS (45 mm)

■ Integrity check on control devices

■ Separate return loop

KZP3-RS (45 mm)

■ Four input circuits

Specifications

Type Supply voltage Connections Weight (g) Code

KNA3-XS 24 V AC/DC Screw terminals 310 85 100 036

KNAC3-XS 24 V AC/DC Spring terminals 310 85 101 036

KNA3-RS 24 V AC/DC Screw terminals 310 85 100 436

KZP3-RS 24 V AC/DC Screw terminals 410 85 100 536

40 - 260 V AC Screw terminals 310 85 100 037

40 - 260 V AC Spring terminals 310 85 101 037

115 V AC Screw terminals 410 85 100 434 230 V AC Screw terminals 410 85 100 435

General characteristics

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

-15 % / + 15 % of Un for DC

Precision

Reset time < 25 ms Maximum response time on emergency stop < 50 ms

Output specification

Number of safety circuits 3 "N/O" AgSnO2 contacts Number of data circuits 1 "NC" AgSnO2 contacts

Function and use

Max. absorbed power KNA3-XS / KNA3-RS : AC 1.6 VA / DC 2 W

KZP3-RS : AC 3 VA / DC 3 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 80 MHz to 1 GHz/900 MHz (ENV 50140/204)

KNA3-XS : 10 V/m Level 3 acc. to IEC 1000.4.3

KNA3-RS/KZP3-RS : 30 V/m Level X acc. to IEC 1000.4.3 Electrostatic discharge 8 kV in the air acc. to IEC 1000.4.2

KNA3-RS / KZP3-RS : 15 kV in the air acc. to IEC 1000.4.2 Shock waves KNA3-XS :

- Common mode 1 kV acc. to IEC 1000.4.5 KNA3-RS / KZP3-RS :

- Level 3 acc. to IEC 1000.4.5

- Common mode 2kV for 24 V and 24 V

- Common mode 4 kV for 230 V (2 kV residual current mode for KNA3-RS)

Radio frequencies in common mode KNA3-XS :

- 10 V rms Level 3 according to IEC 1000.4.6

- 150 KhZ TO 80 MHz (ENV 50141) according to IEC 1000.4.11

KNA3-RS / KZP3-RS :

- 30 Vrms Level X acc. to IEC 1000.4.6

150 kHz to 80 MHz (ENV 50141) according to IEC 1000.4.11

Dimensions

KNA3-XS Mounting - Removing KNA3-RS / KZP3-RS

113

68,6

118

22,5

68,6

Connections

KNA3-XS KNA3-RS KZP3-RS

13 23 33

A1 Y1 Y2

PWR

OUT

13 23 33 41

14 24 34 42

KNA3-XS

A2 41 42

2414 34

Y11 Y12 Y1 13 23 33

A1 X1 Y2

A2 PE Y21 Y22 42

S1 S2 41

PWR

OUT

13 23 33 41

14 24 34 42

KNA3-RS

X2 Y11Y1 14 24 34

113

118

13 23 33 S3 Y32 Y42

A1 S1 S2

A2 Y11 Y1 Y2 41 42

S4 Y31 Y41

PWR

OUT

13 23 33 41

14 24 34 42

KZP3-RS

Y22Y12 Y21 14 24 34

A1-A2 Power supply Control device (s) Y1-Y2 Start / validation 13-14/23-24/33-34 "N/O" safety contacts 41-42 "N/C" signaling contacts

A1-A2 Power supply Y11-Y12 / Y21-Y22 Redundant inputs with differentiated voltage for control devices Y1-Y2 Start/validation S1-S2 Short-circuit protection on start / validation input X1-X2 Return loop 13-14/23-24/33-34 "N/O" safety contacts 41-42 "N/C" signalling contacts

A1-A2 Power supply Y11-Y12 / Y21-Y22 Redundant inputs with differentiated voltage for control devices Y31-Y32 / T41-T42 Redundant inputs with differentiated voltage for control devices Y1-Y2 Start/validation S1-S2 / S3-S4 Short-circuit protection on start/validation input 13-14/23-24/33-34 "N/O" safety contacts 41-42 "N/C" signalling contacts

Principles

Control devices :

The KZP3-RS is used to obtain and maintain a category 4 level of safety for an installation with two control devices.

Depending on the degree of safety required, KNA3-XS / KNA3-RS / KZP3-RS can receive the following components as inputs :

- pushbutton for start or validation (Y1-Y2)

-emergency stop pushbuttons with one or two contacts (A1-A2) two contacts KNA3-RS : Y11-Y12 and Y21-Y22, two contacts KZP3-RS : Y11-Y12 / Y21-Y22 and Y31-Y32 / Y41-Y42

- position sensors (limit switches) with one or two contacts (A1-A2) two contacts KNA3-RS : Y11-Y12 and Y21-Y22, two contacts KZP3-RS : Y11-Y12 / Y21-Y22 and Y31-Y32 / Y41-Y42

A positive break operation device must be used if a single channel is used. To increase the degree of safety, one "N/C" auxiliary contact per power contactor is wired in series with the start (or validation) pushbutton, to ensure selfchecking in this part of the installation.

Control devices :

The KNA3 / KZP3 has three "N/O" safety contacts (13-14/23-24/33-34) and one "N/C" signalling contact (41-42). One or more control devices may be wired up to the breaking capacity of the safety contacts : 1500 VA. However, to limit internal heating, it is advisable not to exceed 10 A thermal for all three contacts. The signalling contact can be wired on a PLC input or integrated into a fault signalling system.

Extending the number of contacts :

The number of contacts can be extended and the breaking capacity thus increased. To do this, use the KZE3-XS.

Applications

KNA3-XS Category 2

A1 Y1 Y2

13 23 33

14 24 34

A2 42

14 24 34

24 V

Control device with one channel without

return loop

Validation

Two coils per contact

Emergency stop

KNA3-XS Category 3

24 V

Control channel with 2 channels with

2313

A1 Y1 Y2

13 23 33

14 24 34

A2 42

14 24 34

return loop

Validation

One coil per contact

Emergency stop

KNA3-RS

Category 4

+ 24 Vcc

Y11 Y1

Y12 13 33

13 23 33 41

S1 and S2 bridged for start/validation input protection

Emergency stop

41-42 to PLC or fault circuit

Start

14 24 34 42 KNA3-RS A2

Y2 S1 S2 41

Y22Y21 42

Y11Y1 14 24 34

C1 C2 C3

KNA3-RS

Category 2

+ 24 Vcc

Y11 Y1

Y12 13 33

13 23 33 41

"Light on" reflex cells

41-42 to PLC or fault circuit

Start

Compulsory : S1 and S2 bridged for start/validation input

14 24 34 42 KNA3-RS A2

Y2 S1 S2 41

Y21 42

Y22 NC

Y11Y1 14 24 34

C1 C2 C3

protection

Level 4 - KZP3-RS Level 4 - KZP3-RS

+ 24 V

Start

S1-S2 and S3-S4 bridged for start/validation input protection

23 S3 Y4233 S1

13 23 33 41

Y11 Y1 Y2 42 Y22Y12

Y32

S2 S4 Y31 Y41

14 24 34 42

Y21 14 24 34

C1 C2 C3

AU1

AU2

}

24 V

23 S3 Y4233 S1

13 23 33 41

Y11 Y1 Y2 42 Y22Y12

PLC outputs

Cover

S1-S2 and S3-S4 bridged for short-circuit protection on the

Y32

S2 S4 Y31 Y41

14 24 34 42

Y21 14 24 34

C1 C2 C3

validation line

PLC input

Include an "N/C" contact from each power contactor in the start/

validation line (return loop)

Start

Safety relay: general characteristics

➜ Emergency stop ➜ Timed contacts ➜ Extension relay ➜ Zero speed monitoring ➜ 2-hand control

Supply

Supply voltage 24 V AC 50 / 60 Hz

On/off indication 1 power supply voltage LED

Output specification

Type Volt-free outputs Breaking capacity (V resistive) 1500 VA Max. breaking current 6.82 A Max. breaking voltage 440 V AC Electrical endurance

Mechanical life (operations)

Function and use

On/off indication 1 internal relay status LED Operating temperature (°C) IEC 68-2-14 0 ➞ +50 Storage temperature (IEC 68-2-12) (ºC) -20 ➞ +70 Internal voltage 24 V DC

EMC immunity according to EN 50082-2

fast transients 2kV directly acc. to IEC 1000.4.4

Drop-out / short breaks / microbreaks Un-30 % for 10 ms every 1 s

Material Polycarbonate

Protection Housing IP 40 Protection Terminal IP 20 Tightening capacity

Spring terminals, 2 terminals per connection point - rigid wire Spring terminals, 2 terminals per connection point - flexible wire

24 V DC maximum ripple 10 %

operations at 1500 VA resistive

5.10

operations at 500 VA resistive

4 kV directly for the 230 V <ac> version 2 Kv when coupled

Un-60 % for 100 ms every 1 s according to IEC 61496-1/97 Un-100 % for 10 ms every 100 ms Un-50 % for 20 ms every 200 ms Un-50 % for 500 ms every 5 s

Self-extinguishing-UL94 class VO

2 x 1.5 mm 2 multicore with ferrule 2 x 2.5 mm

2.5 mm

1.5 mm

solid conductor

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