Pilz PNOZ s7 User manual

PNOZ s7
Operating Manual 21399-EN-10
}Safety relays

Preface
This document is a translation of the original document.
All rights to this documentation are reserved by Pilz GmbH & Co. KG. Copies may be made
for internal purposes. Suggestions and comments for improving this documentation will be
gratefully received.
Pilz®, PIT®, PMI®, PNOZ®, Primo®, PSEN®, PSS®, PVIS®, SafetyBUS p®,
SafetyEYE®, SafetyNET p®, the spirit of safety® are registered and protected trademarks
of Pilz GmbH & Co. KG in some countries.
SD means Secure Digital

Contents
Operating Manual PNOZ s7
21399-EN-10 3
Introduction 5
Validity of documentation 5
Using the documentation 5
Definition of symbols 5
Safety 6
Intended use 6
Safety regulations 6
Safety assessment 6
Use of qualified personnel 7
Warranty and liability 7
Disposal 7
For your safety 7
Unit features 8
Safety features 8
Block diagram/terminal configuration 9
Function description 9
Timing diagram 9
Installation 10
Wiring 10
Preparing for operation 11
Operation 12
Status indicators 12
Error indicators 12
Faults - malfunctions 12
Dimensions in mm 13
Technical details 13
Safety characteristic data 18
Supplementary data 18
Service life graph 19
Remove plug-in terminals 20
Order reference 20

Contents
Operating Manual PNOZ s7
21399-EN-10 4
EC declaration of conformity 21

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 5
Introduction
Validity of documentation
This documentation is valid for the product PNOZ s7. It is valid until new documentation is
published.
This operating manual explains the function and operation, describes the installation and
provides guidelines on how to connect the product.
Using the documentation
This document is intended for instruction. Only install and commission the product if you
have read and understood this document. The document should be retained for future ref-
erence.
Definition of symbols
Information that is particularly important is identified as follows:
DANGER!
This warning must be heeded! It warns of a hazardous situation that poses
an immediate threat of serious injury and death and indicates preventive
measures that can be taken.
WARNING!
This warning must be heeded! It warns of a hazardous situation that could
lead to serious injury and death and indicates preventive measures that can
be taken.
CAUTION!
This refers to a hazard that can lead to a less serious or minor injury plus
material damage, and also provides information on preventive measures
that can be taken.
NOTICE
This describes a situation in which the product or devices could be dam-
aged and also provides information on preventive measures that can be
taken. It also highlights areas within the text that are of particular import-
ance.

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 6
INFORMATION
This gives advice on applications and provides information on special fea-
tures.
Safety
Intended use
The contact expansion module PNOZ s7 meets the requirements of EN60947-5-1,
EN60204-1 and VDE0113-1. It is used to increase the number of instantaneous safety
contacts available on a base unit. Base units are all safety relays with feedback loop monit-
oring.
The max. achievable safety level depends on the base unit. The expansion module may not
exceed this. The safety-related characteristic values stated under safety-related character-
istic data [ 18] can only be achieved if the base unit also exhibits these values.
The following is deemed improper use in particular:
}Any component, technical or electrical modification to the product
}Use of the product outside the areas described in this manual
}Use of the product outside the technical details (see Technical details [ 13]).
NOTICE
EMC-compliant electrical installation
The product is designed for use in an industrial environment. The product
may cause interference if installed in other environments. If installed in other
environments, measures should be taken to comply with the applicable
standards and directives for the respective installation site with regard to in-
terference.
Safety regulations
Safety assessment
Before using a unit it is necessary to perform a safety assessment in accordance with the
Machinery Directive.
Functional safety is guaranteed for the product as a single component. However, this does
not guarantee the functional safety of the overall plant/machine. In order to achieve the re-
quired safety level for the overall plant/machine, define the safety requirements for the
plant/machine and then define how these must be implemented from a technical and organ-
isational standpoint.

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 7
Use of qualified personnel
The products may only be assembled, installed, programmed, commissioned, operated,
maintained and decommissioned by competent persons.
A competent person is someone who, because of their training, experience and current pro-
fessional activity, has the specialist knowledge required to test, assess and operate the
work equipment, devices, systems, plant and machinery in accordance with the general
standards and guidelines for safety technology.
It is the company’s responsibility only to employ personnel who:
}Are familiar with the basic regulations concerning health and safety / accident preven-
tion
}Have read and understood the information provided in this description under "Safety"
}And have a good knowledge of the generic and specialist standards applicable to the
specific application.
Warranty and liability
All claims to warranty and liability will be rendered invalid if
}The product was used contrary to the purpose for which it is intended
}Damage can be attributed to not having followed the guidelines in the manual
}Operating personnel are not suitably qualified
}Any type of modification has been made (e.g. exchanging components on the PCB
boards, soldering work etc.).
Disposal
}In safety-related applications, please comply with the mission time TM in the safety-re-
lated characteristic data.
}When decommissioning, please comply with local regulations regarding the disposal of
electronic devices (e.g. Electrical and Electronic Equipment Act).
For your safety
The unit meets all the necessary conditions for safe operation. However, please note the
following:
}Note for overvoltage category III: If voltages higher than low voltage (>50 VAC or >120
VDC) are present on the unit, connected control elements and sensors must have a
rated insulation voltage of at least 250 V.

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 8
Unit features
}Positive-guided relay outputs:
– 4 safety contacts (N/O), instantaneous
– 1 auxiliary contact (N/C), instantaneous
}LED for:
– Input status, channel1
– Input status, channel2
– Switch status of the safety contacts
– Fault
}Plug-in connection terminals (either spring-loaded terminal or screw terminal)
}See order reference for unit types
Safety features
The unit meets the following safety requirements:
}The contact expander module expands an existing circuit. As the output relays are
monitored via the base unit's feedback loop, the safety functions on the existing circuit
are transferred to the contact expander module.
}The safety function remains effective in the case of a component failure.
}Earth fault in the feedback loop:
Detected, depending on the base unit that is used.
}Earth fault in the input circuit:
The output relays de-energise and the safety contacts open.

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 9
Block diagram/terminal configuration
Fig.: Centre: Front view with cover, right: Front view without cover
*Safe separation from non-marked area in accordance with EN 60947-1, 6 kV, basic insula-
tion between all safety contacts.
Function description
with PNOZsigma base unit:
}Dual-channel operation via PNOZsigma connector
without PNOZsigma base unit:
}Single-channel operation: one input circuit affects the output relays
Timing diagram
POWER/Input
Output safe
Output aux.
Legend
}POWER/Input: Supply voltage/Input
}Output safe: Safety contacts
}Output aux.: Auxiliary contacts
}t1: Switch-on delay
}t2: Delay-on de-energisation

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 10
Installation
Install contact expansion module without base unit:
}Ensure that the plug terminator is inserted at the side of the unit.
Connect base unit and PNOZsigma contact expansion module:
}Remove the plug terminator at the side of the base unit and at the contact expander
module
}Connect the base unit and the contact expansion module using the connector supplied,
before mounting the units to the DIN rail.
Control cabinet 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 (35 mm).
}When installed vertically: Secure the unit by using a fixing element (e.g. retaining
bracket or end angle).
}Push the unit upwards or downwards before lifting it from the DIN rail.
Wiring
Please note:
}Information given in the "Technical details [ 13]" must be followed.
}Outputs 13-14, 23-24, 33-34, 43-44 are safety contacts; outputs 51 -52 are auxiliary
contacts (e.g. for display).
}Auxiliary contact 51-52 shouldnot be used for safety circuits!
}To prevent contact welding, a fuse should be connected before the output contacts (see
Technical details [ 13]).
}Calculation of the max. cable runs lmax in the input circuit:
Rlmax
Rl / km
Imax =
Rlmax = max. overall cable resistance (see Technical details [ 13])
Rl/km = cable resistance/km
}Use copper wire that can withstand 60/75°C.
}Sufficient fuse protection must be provided on all output contacts with capacitive and in-
ductive loads.
}Ensure the EMC requirements of IEC 60204-1 are met.
}The power supply must comply with the regulations for extra low voltages with protect-
ive electrical separation (SELV, PELV) in accordance with VDE 0100, Part 410.

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 11
Preparing for operation
Supply voltage AC DC
A1
A2
24 V DC
0 V
PNOZsigma
expansion
module
Input circuit Single-channel Dual-channel
Base unit:
Safety relay PNOZX
A1
A2
24 V DC
0 V
PNOZsigma
expansion
module
Base unit:
Safety relay PNOZelog
Driven via semiconductor outputs
(24 VDC)
A1
A20 V
O1
L-
PNOZsigma
expansion
module
Feedback loop Base unit: Safety relay PNOZX Base unit: Safety relay PNOZelog
The inputs that evaluate the feed-
back loop will depend on the
base unit and application
52
51
feedback
loop PNOZsigma
expansion
module
51
52
24 V DC
feedback
loop
PNOZsigma
expansion
module
Connection to PNOZsigma
base unit/PNOZmulti Mini base
unit
Base unit: Safety relay PNOZ-
sigma
Base unit: Small control system
PNOZmulti Mini
The feedback loop is connected
and evaluated via the connector
PNOZmulti Mini
base unit
PNOZsigma
expansion
module
INFORMATION
If a base unit and a contact expansion module are linked via the connector,
no additional wiring is necessary.
Do not connect A1 to the contact expansion module!

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 12
Operation
NOTICE
The safety function should be checked after initial commissioning and each
time the plant/machine is changed. The safety functions may only be
checked by qualified personnel.
LEDs indicate the status and errors during operation:
LED on
Status indicators
IN1
Channel1 actuated.
IN2
Channel2 actuated.
IN1, IN2, OUT
Safety contacts are closed.
Error indicators
FAULT
Diagnostics: Plug terminator not connected
}Remedy: Insert plug terminator, switch supply voltage off and then on
again.
Faults - malfunctions
}Contact malfunctions: If the contacts have welded, reactivation will not be possible after
the input circuit has opened.

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 13
Dimensions in mm
*with spring-loaded terminals
120 (4.72")
* 100 (3,94")
98 (3.86")
17,5
(0.69")
Technical details
General 750107 751107 751187
Approvals
CCC, CE, EAC (Euras-
ian), KOSHA, TÜV, cU-
Lus Listed
CCC, CE, EAC (Euras-
ian), KOSHA, TÜV, cU-
Lus Listed
CCC, CE, EAC (Euras-
ian), KOSHA, TÜV, cU-
Lus Listed
Electrical data 750107 751107 751187
Supply voltage
Voltage 24 V 24 V 24 V
Kind DC DC DC
Voltage tolerance -20 %/+20 % -20 %/+20 % -20 %/+20 %
Output of external
power supply (DC) 2 W 2 W 2 W
Residual ripple DC 20 % 20 % 20 %
Duty cycle 100 % 100 % 100 %
Inputs 750107 751107 751187
Number 1 1 1
Voltage at
Input circuit DC 24 V 24 V 24 V
Current at
Input circuit DC 70 mA 70 mA 70 mA
Max. inrush current im-
pulse
Current pulse, input cir-
cuit 2,7 A 2,7 A 2,7 A
Pulse duration, input
circuit 0,1 ms 0,1 ms 0,1 ms
Max. overall cable resist-
ance Rlmax
Single-channel at UB
DC 30 Ohm 30 Ohm 30 Ohm

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 14
Relay outputs 750107 751107 751187
Number of output con-
tacts
Safety contacts (N/O),
instantaneous 4 4 4
Auxiliary contacts (N/C) 1 1 1
Max. short circuit current
IK 1 kA 1 kA 1 kA
Utilisation category
In accordance with the
standard EN 60947-4-1 EN 60947-4-1 EN 60947-4-1
Utilisation category of
safety contacts
AC1 at 240 V 240 V 240 V
Min. current 0,01 A 0,01 A 0,01 A
Max. current 6 A 6 A 6 A
Max. power 1500 VA 1500 VA 1500 VA
DC1 at 24 V 24 V 24 V
Min. current 0,01 A 0,01 A 0,01 A
Max. current 6 A 6 A 6 A
Max. power 150 W 150 W 150 W
Utilisation category of
auxiliary contacts
AC1 at 240 V 240 V 240 V
Min. current 0,01 A 0,01 A 0,01 A
Max. current 2 A 2 A 2 A
Max. power 500 VA 500 VA 500 VA
DC1 at 24 V 24 V 24 V
Min. current 0,01 A 0,01 A 0,01 A
Max. current 2 A 2 A 2 A
Max. power 50 W 50 W 50 W
Utilisation category
In accordance with the
standard EN 60947-5-1 EN 60947-5-1 EN 60947-5-1
Utilisation category of
safety contacts
AC15 at 230 V 230 V 230 V
Max. current 5 A 5 A 5 A
DC13 (6 cycles/min) at 24 V 24 V 24 V
Max. current 5 A 5 A 5 A
Utilisation category of
auxiliary contacts
AC15 at 230 V 230 V 230 V
Max. current 2 A 2 A 2 A
DC13 (6 cycles/min) at 24 V 24 V 24 V
Max. current 2 A 2 A 2 A

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 15
Relay outputs 750107 751107 751187
Utilisation category in ac-
cordance with UL
Voltage 240 V AC G.U. (same po-
larity)
240 V AC G.U. (same po-
larity)
240 V AC G.U. (same po-
larity)
With current 6 A 6 A 6 A
Voltage 24 V DC G. U. 24 V DC G. U. 24 V DC G. U.
With current 6 A 6 A 6 A
External contact fuse pro-
tection, safety contacts
In accordance with the
standard EN 60947-5-1 EN 60947-5-1 EN 60947-5-1
Max. melting integral 260 A²s 260 A²s 260 A²s
Blow-out fuse, quick 10 A 10 A 10 A
Blow-out fuse, slow 6 A 6 A 6 A
Blow-out fuse, gG 10 A 10 A 10 A
Circuit breaker 24V
AC/DC, characteristic
B/C 6 A 6 A 6 A
External contact fuse pro-
tection, auxiliary contacts
Max. melting integral 160 A²s 160 A²s 160 A²s
Blow-out fuse, quick 4 A 4 A 4 A
Blow-out fuse, slow 2 A 2 A 2 A
Blow-out fuse, gG 4 A 4 A 4 A
Circuit breaker 24 V
AC/DC, characteristic
B/C 2 A 2 A 2 A
Contact material AgCuNi + 0,2 µm Au AgCuNi + 0,2 µm Au AgCuNi + 0,2 µm Au
Conventional thermal
current while loading
several contacts
750107 751107 751187
Ith per contact at UB DC;
AC1:240V,DC1:24V
Conv. therm. current
with 1 contact 6 A 6 A 6 A
Conv. therm. current
with 2 contacts 5,5 A 5,5 A 5,5 A
Conv. therm. current
with 3 contacts 4,5 A 4,5 A 4,5 A
Conv. therm. current
with 4 contacts 4 A 4 A 4 A
Times 750107 751107 751187
Switch-on delay
With automatic start
after power on typ. 30 ms 30 ms 30 ms
With automatic start
after power on max. 50 ms 50 ms 50 ms

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 16
Times 750107 751107 751187
Delay-on de-energisation
With E-STOP typ. 18 ms 18 ms 18 ms
With E-STOP max. 30 ms 30 ms 30 ms
With power failure typ. 18 ms 18 ms 18 ms
With power failure max. 30 ms 30 ms 30 ms
Environmental data 750107 751107 751187
Climatic suitability EN 60068-2-78 EN 60068-2-78 EN 60068-2-78
Ambient temperature
Temperature range -10 - 55 °C -10 - 55 °C -10 - 55 °C
Storage temperature
Temperature range -40 - 85 °C -40 - 85 °C -40 - 85 °C
Climatic suitability
Humidity 93 % r. h. at 40 °C 93 % r. h. at 40 °C 93 % r. h. at 40 °C
Condensation during op-
eration Not permitted Not permitted Not permitted
EMC EN 60947-5-1, EN
61000-6-2, EN 61000-6-4,
EN 61326-3-1
EN 60947-5-1, EN
61000-6-2, EN 61000-6-4,
EN 61326-3-1
EN 60947-5-1, EN
61000-6-2, EN 61000-6-4,
EN 61326-3-1
Vibration
In accordance with the
standard EN 60068-2-6 EN 60068-2-6 EN 60068-2-6
Frequency 10 - 55 Hz 10 - 55 Hz 10 - 55 Hz
Amplitude 0,35 mm 0,35 mm 0,35 mm
Airgap creepage
In accordance with the
standard EN 60947-1 EN 60947-1 EN 60947-1
Overvoltage category III III III
Pollution degree 2 2 2
Rated insulation voltage 250 V 250 V 250 V
Rated impulse withstand
voltage 6 kV 6 kV 6 kV
Protection type
Mounting area (e.g.
control cabinet) IP54 IP54 IP54
Housing IP40 IP40 IP40
Terminals IP20 IP20 IP20
Mechanical data 750107 751107 751187
Mounting position Any Any Any
Mechanical life 10,000,000 cycles 10,000,000 cycles 10,000,000 cycles
Material
Bottom PC PC PC
Front PC PC PC
Top PC PC PC
Connection type Screw terminal Cage clamp terminal Cage clamp terminal
Mounting type plug-in plug-in plug-in

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 17
Mechanical data 750107 751107 751187
Conductor cross section
with screw terminals
1 core flexible 0,25 - 2,5 mm², 24 - 12
AWG – –
2 core with the same
cross section, flexible
with crimp connectors,
no plastic sleeve
0,25 - 1 mm², 24 - 16
AWG – –
2 core with the same
cross section, flexible
without crimp connect-
ors or with TWIN crimp
connectors
0,2 - 1,5 mm², 24 - 16
AWG – –
Torque setting with screw
terminals 0,5 Nm – –
Conductor cross section
with spring-loaded termin-
als: Flexible with/without
crimp connector –
0,2 - 2,5 mm², 24 - 12
AWG
0,2 - 2,5 mm², 24 - 12
AWG
Spring-loaded terminals:
Terminal points per con-
nection –2 2
Stripping length with
spring-loaded terminals –9 mm 9 mm
Dimensions
Height 98 mm 100 mm 100 mm
Width 17,5 mm 17,5 mm 17,5 mm
Depth 120 mm 120 mm 120 mm
Weight 170 g 170 g 170 g
Where standards are undated, the 2014-07 latest editions shall apply.

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 18
Safety characteristic data
NOTICE
You must comply with the safety-related characteristic data in order to
achieve the required safety level for your plant/machine.
Operating
mode
EN ISO
13849-1:
2008
PL
EN ISO
13849-1:
2008
Category
EN 62061
SIL CL
EN 62061
PFHD [1/h]
IEC 61511
SIL
IEC 61511
PFD
EN ISO
13849-1:
2008
TM [year]
Safety con-
tacts, in-
stantaneous PL e Cat. 4 SIL CL 3 2,31E-09 SIL 3 2,03E-06 20
All the units used within a safety function must be considered when calculating the safety
characteristic data.
INFORMATION
A safety function's SIL/PL values are not identical to the SIL/PL values of
the units that are used and may be different. We recommend that you use
the PAScal software tool to calculate the safety function's SIL/PL values.
Supplementary data
CAUTION!
It is essential to consider the relay's service life graphs. The relay outputs'
safety-related characteristic data is only valid if the values in the service life
graphs are met.
The PFH value depends on the switching frequency and the load on the relay output.
If the service life graphs are not accessible, the stated PFH value can be used irrespective
of the switching frequency and the load, as the PFH value already considers the relay's
B10d value as well as the failure rates of the other components.

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 19
Service life graph
The service life graphs indicate the number of cycles from which failures due to wear must
be expected. The wear is mainly caused by the electrical load; the mechanical load is negli-
gible.
Cycles x 1000
Switching current (A)
Fig.: Service life graphs at 24 V DC and 230 V AC
Cycles x 1000
Switching current (A)
Fig.: Service life graphs at 110 V DC

PNOZ s7
Operating Manual PNOZ s7
21399-EN-10 20
Example
}Inductive load: 0.2 A
}Utilisation category: AC15
}Contact service life: 2 000 000 cycles
Provided the application to be implemented requires fewer than 2 000 000 cycles, the PFH
value (see Technical details [ 13]) can be used in the calculation.
To increase the service life, sufficient spark suppression must be provided on all output
contacts. With capacitive loads, any power surges that occur must be noted. With DC con-
tactors, use flywheel diodes for spark suppression.
Remove plug-in terminals
Procedure: Insert the screwdriver into the housing recess behind the terminal and lever the
terminal out.
Do not remove the terminals by pulling the cables!
Order reference
Product type Features Terminals Order No.
PNOZ s7 24 VDC Screw terminals 750 107
PNOZ s7 C 24 VDC Spring-loaded terminals 751 107
PNOZ s7 C
(coated version)
24 VDC Spring-loaded terminals 751 187