Pilz PNOZ ex Data Sheet

E-STOP relays, safety gate monitors

Category 4, EN 954-1

PNOZ Ex

Safety relay for monitoring E-STOP
pushbuttons and safety gates in po­tentially explosive atmospheres

Approvals

PNOZ Ex







Unit features

` Positive-guided relay outputs:

– 3 safety contacts (N/O), instanta-

neous

– 1 instantaneous auxiliary contact

(N/O) in the intrinsically safe area

– 1 instantaneous auxiliary contact

(N/O) for fusing in the intrinsically
safe area

– 1 instantaneous auxiliary contact

(N/C) in the non-intrinsically safe
area

` Connection options for:

– E-STOP pushbutton
– Safety gate limit switch
– Reset button

` LED indicator for:

– Switch status channel 1/2
– Supply voltage

` Ex area II (1)GD [EEx ia] IIB/IIC
` See order reference for unit types

Unit description

The safety relay meets the require­ments of EN 60947-5-1, EN 60204-1
and VDE 0113-1 and may be used in
applications with

` E-STOP pushbuttons
` Safety gates

The safety relay provides an intrinsi­cally safe output circuit and volt-free
contacts for potentially explosive are­as (standards used: EN 50014 +A1-A2
and EN 50020).
The unit is suitable for non-contact
barriers (e.g. light curtains) because a
dynamic start is possible.

Safety features

The relay meets the following safety
requirements:

` The circuit is redundant with built-in

self-monitoring.

` The safety function remains effec-

tive in the case of a component fail­ure.

` The correct opening and closing of

the safety function relays is tested
automatically in each on-off cycle.

Block diagram

A1 A2 13 23 33 41

S11 S12 S21 S22

~

=

Power

Feed-

back

Y1 Y2

Grey area = intrinsically safe area

Input

Y36 Y37

Reset/

Start

S12 S34

Reset/

Start

K1

K2

14 24 34 42

535463

64

S52 Y36

InputInput

Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

NSG-D-2-355-2006-08

E-STOP relays, safety gate monitors

Category 4, EN 954-1

PNOZ Ex

Function description

` Dual-channel operation with detec-

tion of shorts across contacts: re­dundant input circuit, detects
– earth faults in the reset and input

circuit,

– short circuits in the input circuit

and, with a monitored reset, in
the reset circuit too,

Timing diagram

1 2

POWER

Reset/Start

Input

Output safe

Output aux.

t1 t2

t1 t2

Key

` Power: Supply voltage
` Reset/start: Reset circuit S12-S34,

Y36-Y37, Y1-Y2

` Input: Input circuits S11-S12, S21-

S21, S52, Y36

` Output safe: Safety contacts 13-14,

23-24, 33-34

– shorts between contacts in the

input circuit.

` Automatic start: Unit is active once

the input circuit has been closed.

` Manual reset: Unit is active once

the input circuit is closed and then
the reset circuit is closed.

` M on it or ed re se t: Un i t i s ac ti ve on c e

– the input circuit is closed and

then the reset circuit is closed

ab

t1

t1

t2

t2

` Output aux: Auxiliary contacts 41-

42, 53-54, 63-64

` c: Automatic reset
` d: Manual reset
` e: Monitored reset
` a: Input circuit closes before reset

circuit

and opened again.

– the reset circuit is closed and

then opened again once the in­put circuit is closed.

` Increase in the number of available

contacts by connecting contact ex­pander modules or external contac­tors/relays.

ab

t1

3

t2

t2

t1

` b: Reset circuit closes before input

circuit

: Switch-on delay

` t

1

` t2: Delay-on de-energisation

Wiring

Please note:

` Information given in the “Technical

details” must be followed.

` Sufficient fuse protection must be

provided on all output contacts with
capacitive and inductive loads.

` Outputs 13-14, 23-24, 33-34 are

safety contacts, outputs 41-42, 53­54, 63-64 are auxiliary contacts
(e.g. for display).

` To prevent contact welding, a fuse

should be connected before the
output contacts (see technical de­tails).

` Calculation of the max. cabling runs

in the input circuit:

l

max

R

lmax

=

I

max

Rl / km

R

= max. overall cable resist-

lmax

ance (see technical details)

/km = cable resistance/km

R

l

` Use copper wire that can withstand

60/75 °C.

Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

NSG-D-2-355-2006-08Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany

-2

E-STOP relays, safety gate monitors

Category 4, EN 954-1

PNOZ Ex

Preparing for operation

` Supply voltage

Supply voltage AC DC

A1

A2

L1

N

` Input circuit

Input circuit Single-channel Dual-channel
E-STOP

with detection of shorts across contacts

Y36 (S11)
S52

S11
S21
S22

S12

S1

Safety gate
with detection of shorts across contacts

Y36 (S11)
S52

S11
S12
S21
S22

S1

` Reset circuit

Reset circuit Reset from the non-intrinsically safe area Reset from the intrinsically safe area
Automatic reset

S12
S34

Y1
Y2

S2

Manual reset

Monitored reset

Y36
Y37

Y1
Y2

S12
S34

Y1
Y2

S12
S34

S3

S3

Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

Y1
Y2

S3
S12
S34

Y1
Y2

S3
S12
S34

Y36

Y37

NSG-D-2-355-2006-08

E-STOP relays, safety gate monitors

Category 4, EN 954-1

PNOZ Ex

` Feedback loop

Feedback loop Reset from the non-intrinsically safe area Reset from the intrinsically safe area
Contacts from external contactors

(manual reset)

S12

S34

Y1

Y2
13 (23, 33)
14 (24 ,34)

K5

K6

K5

K6

S3

L1
N

Y1
Y2

13 (23, 33)
14 (24, 34)

K5

K6

K5

K6

L1
N

Contacts from external contactors
(monitored reset)

` Key

S1/S2 E-STOP/safety gate switch

S3 Reset button

Switch operated

Gate open

Gate closed

Y36
Y37
S12
S34

Y1

Y2
13 (23, 33)
14 (24 ,34)

K5

K6

K5

K6

S3

L1
N

Y1
Y2

13 (23, 33)
14 (24, 34)

K5

K6

K5

K6

L1
N

Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

NSG-D-2-355-2006-08Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany

-4

E-STOP relays, safety gate monitors

Category 4, EN 954-1

PNOZ Ex

Terminal configuration

Installation

` The safety relay should be installed

in a control cabinet with a protec­tion type of at least IP54.

` Use the notch on the rear of the unit

to attach it to a DIN rail.

` Ensure the unit is mounted securely

on a vertical DIN rail (35 mm) by us­ing a fixing element (e.g. retaining
bracket or an end angle).

` Always install the unit outside the

potentially explosive area. Only the
intrinsically safe output circuit (ter­minals S11, S12, S21, S22, S34,
S52, Y36, Y37 and GND) and the
volt-free contacts (terminals 53, 54
and 63, 64) may be brought into the
potentially explosive area.

` Air gaps between uninsulated parts

of intrinsically safe circuits and
earthed metal parts must be a min­imum of 3 mm; air gaps between
uninsulated parts of intrinsically
safe circuits and uninsulated parts
of non-intrinsically safe circuits
must at least conform with the val­ues required in Table 4, Amend­ment 4 of EN 50020

18674-01

13

Dimensions

S12S11 S52

POWER
CH. 1 IN
CH. 2 IN
FUSE
CH.1/CH.2
FAULT

23

14

75 (2.95")
87 (3.42")

------

33

Y36

34

Typ :

121 (4.76")

PNOZ Ex 230 VAC
774 100
II (1) GD [EEx ia] IIC/IIB
DMT 03 ATEX E 068 X

S21 S22 S34

24

Y37

41 42

54

6353

S33

Y1

112,5 (4.41")

64

A1Y2 A2

Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

NSG-D-2-355-2006-08

E-STOP relays, safety gate monitors

Category 4, EN 954-1

PNOZ Ex

Notice

Service life graph

This data sheet is only intended for use
during configuration. For installation

10

and operation, please refer to the op­erating instructions supplied with the

DC13: 24 V

unit.

1

D Nennbetriebstrom (A)

GB Nominal operating current (A)

F Courant coupé (A)

Technical details

Electrical data

Supply voltage
Supply voltage U

AC 115 V, 120 V, 230 V

B

Voltage tolerance -15 %/+10 %
Power consumption at U

AC 8.0 VA

B

Frequency range AC 50 - 60 Hz
Voltage and current at
Input circuit DC: 6.0 V 25.0 mA
Reset circuit DC: 6.0 V 15.0 mA
Feedback loop DC: 24.0 V 20.0 mA
Number of output contacts
Safety contacts (S) instantaneous: 3
Auxiliary contacts (N/C): 3
Category of output contacts in accordance with EN 954-1
Safety contacts (S) instantaneous: 4
Utilisation category in accordance with EN 60947-4-1
Safety contacts: AC1 at 240 V I

Safety contacts: DC1 at 24 V I

Auxiliary contacts (intrinsically safe): DC1 at 30 V I

0.1

E Corriente nominal de servicio (A)

I Corrente di esercizio nominale (A)

NL Nominale bedrijfsstroom (A)

10 100 1000 10000

D Schaltspielzahl x 10
GB Cycles x 10
F Nombre de manvres x 10

: 0.01 A , I

min

P

: 1000 VA

max

: 0.01 A , I

min

: 48 W

P

max

: 0.01 A, I

min

P

: 10 W

max

3

3

max

max

max

AC1: 230 V

3

: 4.00 A

: 2.0 A

: 0.5 A

DC1: 24 V

AC15: 230 V

E Número de ciclos x 10
I Numero dei cicli di commutazione x 10
NL Aantal schakelingen x 10

3

3

3

Auxiliary contacts: AC1 at 240 V I

Auxiliary contacts: DC1 at 24 V I

: 0.01 A , I

min

: 1000 VA

P

max

: 0.01 A , I

min

: 48 W

P

max

max

max

Utilisation category in accordance with EN 60947-5-1
Safety contacts: AC15 at 230 V I
Safety contacts: DC13 at 24 V (6 cycles/min) I
Auxiliary contacts: AC15 at 230 V I
Auxiliary contacts: DC13 at 24 V (6 cycles/min) I

max
max
max
max

: 4.0 A
: 2.0 A
: 4.0 A
: 2.0 A

Contact material AgSnO2 + 0.2 µm Au

Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

: 4.0 A

: 2.0 A

NSG-D-2-355-2006-08Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany

-6

E-STOP relays, safety gate monitors

Category 4, EN 954-1

PNOZ Ex

Electrical data

External contact fuse protection (IK = 1 kA) to EN 60947-5-1
Blow-out fuse, quick
Safety contacts: 4 A
Auxiliary contacts: 4 A
Blow-out fuse, slow
Safety contacts: 4 A
Auxiliary contacts: 4 A
Circuit breaker 24 VAC/DC, characteristic B/C
Safety contacts: 4 A
Auxiliary contacts: 4 A
Max. overall cable resistance R
input circuits, reset circuits
single-channel at U
dual-channel without detect. of shorts across contacts at U
dual-channel with detect. of shorts across contacts at U
Max. line capacitance
EX IIB
EX IIC
Max. line inductance
EX IIB

EX IIC

Times

Switch-on delay
with automatic reset typ. 150 ms
with automatic reset max. 200 ms
with automatic reset after power on typ. 165 ms
with automatic reset after power on max. 210 ms
with manual reset typ. 145 ms
with manual reset max. 200 ms
on monitored reset with rising edge typ. 115 ms
on monitored reset with rising edge max. 150 ms
Delay-on de-energisation
with E-STOP typ. 10 ms
with E-STOP max. 30 ms
with power failure typ. 110 ms
with power failure max. 150 ms
Recovery time at max. switching frequency 1/s
after E-STOP 50 ms
after power failure 200 ms
Min. start pulse duration with a monitored reset 30 ms
Simultaneity, channel 1 and 2 150 ms
Supply interruption before de-energisation 35 ms

Environmental data

EMC EN 60947-5-1, EN 61000-6-2
Vibration to EN 60068-2-6
Frequency 10 - 55 Hz
Amplitude 0.35 mm
Climatic suitability EN 60068-2-78
Airgap creepage VDE 0110-1
Ambient temperature -20 - 55 °C
Storage temperature -40 - 85 °C
Protection type
Mounting (e.g. cabinet) IP54
Housing IP40
Terminals IP20

AC 40 Ohm

B

lmax

AC 80 Ohm

B

AC 15 Ohm

B

2 µF
1 µF

200 µH
100 µH

Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

NSG-D-2-355-2006-08

E-STOP relays, safety gate monitors

Category 4, EN 954-1

PNOZ Ex

Mechanical data

Housing material
Housing PPO UL 94 V0
Front ABS UL 94 V0
Max. cross section of external conductors with screw terminals
1 core flexible 0.20 - 4.00 mm² , 24 - 10 AWG
2 core, same cross section, flexible:
with crimp connectors, without insulating sleeve 0.20 - 2.50 mm² , 24 - 14 AWG
without crimp connectors or with TWIN crimp connectors 0.20 - 2.50 mm² , 24 - 14 AWG
Torque setting with screw terminals 0.60 Nm
Dimensions
Height 87.0 mm
Width 112.5 mm
Depth 121.0 mm
Weight 720 g

The standards current on 05/04 apply.

Order reference

Type Features Terminals Order no.

PNOZ Ex 230 VAC Screw terminals 774 100
PNOZ Ex 115 VAC Screw terminals 774 104
PNOZ Ex 120 VAC Screw terminals 774 105

Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

NSG-D-2-355-2006-08Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany

-8