Pilz PNOZ x2.1C Data Sheet

E-STOP relays, safety gate monitors

Up to Category 4, EN 954-1

PNOZ X2.1C

Safety relay for monitoring E-STOP
pushbuttons and safety gates.

Approvals

PNOZ X2.1C







Unit features

` Positive-guided relay outputs:

– 2 safety contacts (N/O), instanta-

neous

` Connection options for:

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

` LED indicator for:

– Switch status channel 1/2
– Supply voltage

` See order reference for unit types

Unit description

The safety relay meets the require­ments of EN 60204-1 and IEC 60204­1 and may be used in applications with

` E-STOP pushbuttons
` Safety gates

Safety features

The relay conforms to the following
safety criteria:

` The circuit is redundant with built-in

self-monitoring.

` The safety function remains effecti-

ve 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.

` The unit has an electronic fuse.

Block diagram

~

Power

=

S11 S12A1 A2

S21 S22

InputInput

S33 S34

Reset/

Start

13 23

K1

K2

14 24

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

NSG-D-2-350-11/04

E-STOP relays, safety gate monitors

Up to Category 4, EN 954-1

PNOZ X2.1C

Function description

` Single-channel operation: no red-

undancy in the input circuit, earth
faults in the reset circuit are detec­ted.

` Dual-channel operation with detec-

tion of shorts across contacts: red­undant input circuit, detects

Timing diagram

POWER

Reset/Start

Input

Output safe

Key

` Power: Supply voltage
` Reset/start: Reset S33-S34
` Input: Input circuits S11-S12, S21-

S22

` Output safe: Safety contacts 13-14,

23-24

– earth faults in the reset and input

circuit,

– short circuits and shorts bet-

ween contacts in the input cir­cuit.

` Automatic start: Unit is active once

the input circuit has been closed.

1 2

t1 t2

t1 t2

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

circuit

` b: Reset circuit closes before input

circuit

` Manual reset: Unit is active once

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

` Increase in the number of available

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

ab

t1

t1

t2

` t

1

` t

2

t2

: Switch-on delay
: Delay-on de-energisation

Wiring

Please note:

` Information given in the “Technical

details” must be followed.

` Outputs 13-14, 23-24 are safety

contacts.

` To prevent contact welding, a fuse

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

` Calculation of the max. cable runs

in the input circuit:

l

max

R

lmax

=

I

max

Rl / km

= max. overall cable resi-

R

lmax

stance (see technical details)

/km = cable resistance/km

R

l

` Use copper wire that can withstand

60/75 °C.

` Sufficient fuse protection must be

provided on all output contacts with
capacitive and inductive loads.

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

NSG-D-2-350-11/04Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany

-2

E-STOP relays, safety gate monitors

Up to Category 4, EN 954-1

PNOZ X2.1C

Preparing for operation

` Supply voltage

Supply voltage AC DC

A1

A2

L1

N

` Input circuit

Input circuit Single-channel Dual-channel
E-STOP

without detection of shorts across
contacts

S21
S22

S11
S12

A1

S1

L+

E-STOP
with detection of shorts across con­tacts

Safety gate
without detection of shorts across
contacts

S21
S22

A1

S11
S12

S1

L+

A1

A2

S11
S21
S22

S12

L+

L-

S1

Safety gate
with detection of shorts across con­tacts

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

S11
S12
S21
S22

S1

NSG-D-2-350-11/04

S2

E-STOP relays, safety gate monitors

Up to Category 4, EN 954-1

PNOZ X2.1C

` Reset circuit

Reset circuit E-STOP wiring (single-channel)

Safety gate (single-channel)

Automatic reset

S33

S34

Manual reset

S33

S34

S3

E-STOP wiring (dual-channel)
Safety gate (dual-channel)

` Feedback loop

Feedback loop Automatic reset Monitored reset
Contacts from external contactors

S33

S34

13 (23)
14 (24)

K5

K6

K5

K6

L1
N

` Key

S33

S34

S33

S34
13 (23)
14 (24)

S33

S34

K5

K6

K5

K6

S3

S3

L1
N

S1/S2

E-STOP pushbutton/ safety
gate switch

S3 Reset button

Switch operated

Gate open

Gate closed

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

NSG-D-2-350-11/04Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany

-4

E-STOP relays, safety gate monitors

Up to Category 4, EN 954-1

PNOZ X2.1C

Terminal configuration

19924

13 23 24

A114S33 S34

PNOZ X2.1C

POWER
CH. 1
CH. 2

A2S22S21

S12

S11

13 23

14 24

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).

Dimensions

87 (3.42")

80 (3.15")

45

(1.77")

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

NSG-D-2-350-11/04

E-STOP relays, safety gate monitors

Up to Category 4, EN 954-1

PNOZ X2.1C

Notice

Service life graph

This data sheet is only intended for use
during configuration. For installation
and operation, please refer to the ope­rating instructions supplied with the

10

AC15: 230 V

unit.

DC13: 24 V

1

D Nennbetriebstrom (A)

GB Nominal operating current (A)

F Courant coupé (A)

Technical details

Electrical data

Supply voltage
Supply voltage U
Supply voltage U

B
B

AC
DC

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

Power consumption at U

AC

B

DC

B

Frequency range AC 50 - 60 Hz
Residual ripple DC 160 %
Voltage and current at
input circuit DC: 24.0 V
reset circuit DC: 24.0 V

feedback loop DC: 24.0 V
Output contacts in accordance with EN 954-1, Category 4 Safety contacts (N/O): 2
Utilisation category in accordance with EN 60947-4-1

AC1: 240 V

DC1: 24 V

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

Contact material AgSnO2 + 0.2 µm Au
External contact fuse protection in accordance with EN 60947-5-1
Blow-out fuse, quick

Blow-out fuse, slow
Circuit breaker
Max. overall cable resistance R
Single channel at U
Single channel at U
Dual-channel without detect. of shorts across contacts at U

B
B

DC
AC

input circuits, reset circuits

lmax

Dual-channel with detect. of shorts across contacts at U

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

24 V
24 V

4.5 VA

2.0 W

25 mA
50 mA
50 mA

I

: 0.01 A, I

min

P

: 2000 VA

max

I

: 0.01 A, I

min

P

: 200 W

max

: 5.0 A

I

max

I

: 7.0 A

max

10 A
6 A

24 VAC/DC: 6 A, characteristic B/C

150 Ohm
150 Ohm
15 Ohm

DC

B

B

AC

30 Ohm

3

3

: 8.0 A

max

: 8.0 A

max

DC1: 24 V

AC1: 230 V

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

3

NL Aantal schakelingen x 10

3

3

3

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

NSG-D-2-350-11/04Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany

-6

E-STOP relays, safety gate monitors

Up to Category 4, EN 954-1

PNOZ X2.1C

Times

Switch-on delay
with automatic reset typ.
with automatic reset max.
with automatic reset after power on typ.
with automatic reset after power on max.
with manual reset typ.
with manual reset max.
Delay-on de-energisation
with E-STOP typ.
with E-STOP max.
with power failure typ.
with power failure max.
Recovery time at max. switching frequency 1/s
after E-STOP
after power failure
Simultaneity, channel 1 and 2 ∞
Supply interruption before de-energisation 20 ms

Environmental data

EMC EN 60497-5-1 / EN 61000-6-2
Vibration in accordance with EN 60068-2-6
Frequency
Amplitude
Climatic suitability EN 60068-2-78
Airgap creepage VDE 0110-1
Ambient temperature -10 - 55 °C
Storage temperature -40 - 85 °C
Protection type

Mounting (e.g. control cabinet)
Housing
Terminals

Mechanical data

Housing material
Housing
Front
Max. cross section of external conductors on screw terminals
1 core flexible
2 core with the same cross section, flexible
with crimp connectors, no plastic sleeve
without crimp connectors or with TWIN crimp connectors
Torque setting with screw terminals 0.6 Nm
Dimensions (H x W x D) with screw terminals 87.0 mm x 45.0 mm x 80.0 mm

Weight 190 g

60 ms
90 ms
60 ms
100 ms
38 ms
90 ms

17 ms
30 ms
70 ms
110 ms

50 ms
150 ms

10 - 55 Hz

0.35 mm

IP54
IP40
IP20

PPO UL 94 V0
ABS UL 94 V0

0.20 – 4.00 mm

0.20 – 2.50 mm

0.20 – 2.50 mm

2
2
2

The standards current on 03/01 apply.

Order reference

Type Features Terminals Order no.

PNOZ X2.1C 24 VAC 24 VDC Screw terminals 774 305

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

NSG-D-2-350-11/04