Pilz PNOZ 2 User manual

PNOZ 2
Operating Manual-22151-EN-05
}Safety relays

Preface
This document is the original document.
All rights to this documentation are reserved by Pilz GmbH & Co. KG. Copies may be made
for the user's internal purposes. Suggestions and comments for improving this documenta-
tion will be gratefully received.
Source code from third-party manufacturers or open source software has been used for
some components. The relevant licence information is available on the Internet on the Pilz
homepage.
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 2
22151-EN-05 3
Introduction 4
Validity of documentation 4
Using the documentation 4
Definition of symbols 4
Safety 5
Intended use 5
Safety regulations 5
Safety assessment 5
Use of qualified personnel 6
Warranty and liability 6
Disposal 6
For your safety 6
Unit features 7
Safety features 7
Block diagram/terminal configuration 7
Function Description 8
Operating modes 8
Timing diagram 8
Installation 9
Wiring 9
Preparing for operation 10
Operation 11
Status indicators 12
Faults – Interference 12
Dimensions in mm 12
Technical details 13
Safety characteristic data 20
Supplementary data 21
Service life graph 21
Order reference 22
EC declaration of conformity 22

PNOZ 2
Operating Manual PNOZ 2
22151-EN-05 4
Introduction
Validity of documentation
This documentation is valid for the product PNOZ 2. 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.

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Operating Manual PNOZ 2
22151-EN-05 5
INFORMATION
This gives advice on applications and provides information on special fea-
tures.
Safety
Intended use
The safety relay PNOZ 2 provides a safety-related interruption of a safety circuit.
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 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 device 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.

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Operating Manual PNOZ 2
22151-EN-05 6
Use of qualified personnel
The products may only be assembled, installed, programmed, commissioned, operated,
maintained and decommissioned by competent persons.
A competent person is a qualified and knowledgeable person who, because of their train-
ing, experience and current professional activity, has the specialist knowledge required. To
be able to inspect, assess and operate devices, systems and machines, the person has to
be informed of the state of the art and the applicable national, European and international
laws, directives and standards.
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 the section entitled Safety
}Have a good knowledge of the generic and specialist standards applicable to the spe-
cific 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 2
Operating Manual PNOZ 2
22151-EN-05 7
Unit features
}Positive-guided relay outputs:
– 3 safety contacts (N/O), instantaneous
– 1 auxiliary contact (N/C), instantaneous
}Connection options for:
– E-STOP pushbutton
– Safety gate limit switch
– Start button
}LED display for:
– Supply voltage
– Switch status of the safety contacts
}See order reference for unit types
Safety features
The safety relay meets the following safety requirements:
}The circuit is internally redundant with built-in self-monitoring.
}The safety device remains effective in the case of a component failure.
}The correct opening and closing of the safety device relays is tested automatically in
each on-off cycle.
Block diagram/terminal configuration
13
14 24 34 42
23 33 41
A1 A2
X1
T11 T12
X2
T33 T34
*Insulation between the non-marked area and the relay contacts: Basic insulation (over-
voltage category III), Protective separation (overvoltage category II)

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Operating Manual PNOZ 2
22151-EN-05 8
Function Description
The safety relay PNOZ 2 provides a safety-oriented interruption of a safety circuit. When
supply voltage is supplied the "POWER" LED is lit. The unit is ready for operation when the
feedback loop X1-X2 and the start circuit T33-T34 are closed.
}Input circuit is closed (e.g. E-STOP pushbutton not operated):
– The "ON" LED is lit.
– Safety contacts 13-14, 23-24 and 33-34 are closed, auxiliary contact 41-42 is open.
The unit is active.
}Input circuit is opened (e.g. E-STOP pushbutton operated):
– The "ON" LED goes out.
– Safety contacts 13-14, 23-24 and 33-34 are opened redundantly, auxiliary contact
41-42 is closed.
NOTICE
If the safety requirement (e.g. E-STOP pushbutton operated) is triggered <
6 s after starting, the delay-on de-energisation of the instantaneous safety
contacts may be increased (see Technical details [ 13]).
Operating modes
}Single-channel operation: No redundancy in the input circuit, earth faults in the start
and input circuit are detected.
}Automatic start: Unit is active once the input circuit has been closed.
}Manual start: Unit is active once the input circuit and the start circuit are closed.
}Increase in the number of available contacts by connecting contact expander modules
or external contactors/relays.
Timing diagram
[1][1] [2][2]
3 3

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22151-EN-05 9
Legend
}Power: Supply voltage
}Start: Start circuit
}Input: Input circuit
}Output safe: Safety contacts
}Output aux: Auxiliary contact
}[1]: Automatic start
}[2]: Manual start
}a: Input circuit closes before start circuit
}b: Start circuit closes before input circuit
}t1: Switch-on delay
}t2: Delay-on de-energisation
}t3: Recovery time
Installation
}The unit 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).
Wiring
Please note:
}Information given in the "Technical details [ 13]" must be followed.
}Outputs 13-14, 23-24, 33-34 are safety contacts; output 41-42 is an auxiliary contact
(e.g. for display).
}Auxiliary contact 41-42 shouldnot be used for safety circuits!
}Do not connect undesignated terminals.
}To prevent contact welding, a fuse should be connected before the output contacts (see
Technical details [ 13]).
}Calculating the max. cable length Imax in the input circuit with unit types 24 VAC and 42
VAC:
Rlmax
Rl / km
Imax =
Rlmax = max. overall cable resistance (see Technical details [ 13])
Rl/km = cable resistance/km
}Calculating the max. cable length Imax in the input circuit with unit types 110 VAC and
230 VAC:
C
C
Clmax = max. overall cable capacitance (see Technical details [ 13])
Cl/km = cable capacitance/km

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22151-EN-05 10
WARNING!
If the max. overall cable capacitance is exceeded, the unit will no
longer switch off safely and serious injuries and death may result.
Always comply with the max. overall cable capacitance.
}Use copper wire that can withstand 60/75°C.
}Do not switch low currents using contacts that have been used previously with high cur-
rents.
}Sufficient fuse protection must be provided on all output contacts with capacitive and in-
ductive loads.
}The emergency stop pushbutton or safety gate limit switch is connected directly to the
supply voltage.
}Ensure the wiring and EMC requirements of EN 60204-1 are met.
Preparing for operation
Supply voltage AC DC
A1
A2
L1
N
FE
Input circuit Single-channel Dual-channel
E-STOP
T12
T11
Safety gate
Start circuit Automatic start Manual start
E-STOP wiring/safety gate (single-
channel)
T33
T34
S3
Minimum duty cycle: 200ms

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22151-EN-05 11
NOTICE
In the event of an automatic start or manual start with bridged start
contact (fault):
The unit starts up automatically when the safeguard is reset, e.g. when the
E-STOP pushbutton is released. Use external circuit measures to prevent
an unexpected restart.
Feedback loop
without feedback loop monitor-
ing with feedback loop monitoring
Link or contacts from external con-
tactors
X1
X2
K5 K6
K5
L1
N
K6
X1
13 (23, 33)
X2
14 (24, 34)
Legend
}S1: E-STOP/safety gate switch
}S3: Start button
}: Gate open
}: Gate closed
Operation
When the relay outputs are switched on, the mechanical contact on the relay cannot be
tested automatically. Depending on the operational environment, measures to detect the
non-opening of switching elements may be required under some circumstances.
When the product is used in accordance with the European Machinery Directive, a check
must be carried out to ensure that the safety contacts on the relay outputs open correctly.
Open the safety contacts (switch off output) and start the device again, so that the internal
diagnostics can check that the safety contacts open correctly
}for SIL CL 3/PL e at least 1x per month
}for SIL CL 2/PL d at least 1x per year
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.

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22151-EN-05 12
Status indicators
LEDs indicate the status and errors during operation:
LED on
POWER
Supply voltage is present.
ON
Unit is active.
Faults – Interference
}Earth fault: The supply voltage fails and the safety contacts open. Once the cause of
the respective fault has been rectified and the supply voltage is switched off for approx.
1minute, the unit is ready for operation again.
}Contact malfunctions: If the contacts have welded, reactivation will not be possible after
the input circuit has opened.
}LED "POWER" does not light: Short circuit or no supply voltage.
Dimensions in mm
121 (4.76")
75 (2.95")
87 (3.42")
90 (3.54")

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22151-EN-05 13
Technical details
Order no. 775800 – 775810
See below for more order numbers
General 775800 775810
Approvals
CCC, EAC (Eurasian), TÜV, cU-
Lus Listed
CCC, EAC (Eurasian), TÜV, cU-
Lus Listed
Electrical data 775800 775810
Supply voltage
Voltage 24 V 42 V
Kind AC AC
Voltage tolerance -15 %/+10 % -15 %/+10 %
Output of external power supply
(AC) 5 VA 5 VA
Frequency range AC 50 - 60 Hz 50 - 60 Hz
Duty cycle 100 % 100 %
Inputs 775800 775810
Number 1 1
Voltage at
Start circuit DC 24 V 24 V
Feedback loop DC 24 V 24 V
Current at
Start circuit DC 50 mA 50 mA
Feedback loop DC 50 mA 50 mA
Max. overall cable resistance Rl-
max
Single-channel at UB AC 45 Ohm 145 Ohm
Relay outputs 775800 775810
Number of output contacts
Safety contacts (N/O), instant-
aneous 3 3
Auxiliary contacts (N/C) 1 1
Max. short circuit current IK 1 kA 1 kA
Utilisation category
In accordance with the standard EN 60947-4-1 EN 60947-4-1
Utilisation category of safety con-
tacts
AC1 at 240 V 240 V
Min. current 0,01 A 0,01 A
Max. current 8 A 8 A
Max. power 2000 VA 2000 VA
DC1 at 24 V 24 V
Min. current 0,01 A 0,01 A
Max. current 8 A 8 A
Max. power 200 W 200 W

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22151-EN-05 14
Relay outputs 775800 775810
Utilisation category of auxiliary con-
tacts
AC1 at 240 V 240 V
Min. current 0,01 A 0,01 A
Max. current 8 A 8 A
Max. power 2000 VA 2000 VA
DC1 at 24 V 24 V
Min. current 0,01 A 0,01 A
Max. current 8 A 8 A
Max. power 200 W 200 W
Utilisation category
In accordance with the standard EN 60947-5-1 EN 60947-5-1
Utilisation category of safety con-
tacts
AC15 at 230 V 230 V
Max. current 5 A 5 A
DC13 (6 cycles/min) at 24 V 24 V
Max. current 7 A 7 A
Utilisation category of auxiliary con-
tacts
AC15 at 230 V 230 V
Max. current 5 A 5 A
DC13 (6 cycles/min) at 24 V 24 V
Max. current 7 A 7 A
Utilisation category in accordance
with UL
Voltage 240 V AC G. P. 240 V AC G. P.
With current 8 A 8 A
Voltage 24 V DC Resistive 24 V DC Resistive
With current 5 A 5 A
Pilot Duty B300, R300 B300, R300
External contact fuse protection,
safety contacts
In accordance with the standard EN 60947-5-1 EN 60947-5-1
Max. melting integral 240 A²s 240 A²s
Blow-out fuse, quick 10 A 10 A
Blow-out fuse, slow 6 A 6 A
Blow-out fuse, gG 10 A 10 A
Circuit breaker 24V AC/DC,
characteristic B/C 6 A 6 A

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22151-EN-05 15
Relay outputs 775800 775810
External contact fuse protection,
auxiliary contacts
Max. melting integral 240 A²s 240 A²s
Blow-out fuse, quick 10 A 10 A
Blow-out fuse, slow 6 A 6 A
Blow-out fuse, gG 10 A 10 A
Circuit breaker 24 V AC/DC,
characteristic B/C 6 A 6 A
Conventional thermal current 8 A 8 A
Contact material AgSnO2 + 0,2 µm Au AgSnO2 + 0,2 µm Au
Times 775800 775810
Switch-on delay
With automatic start typ. 150 ms 150 ms
With automatic start max. 250 ms 250 ms
With manual start typ. 150 ms 150 ms
With manual start max. 250 ms 250 ms
Delay-on de-energisation
With E-STOP typ. 50 ms 50 ms
With E-STOP, duty cycle ≥6s,
max. 100 ms 100 ms
With E-STOP, duty cycle <6s,
max. 250 ms 250 ms
With power failure typ. 50 ms 50 ms
With power failure max. 250 ms 250 ms
Recovery time at max. switching
frequency 1/s
After E-STOP 250 ms 250 ms
After power failure 250 ms 250 ms
Environmental data 775800 775810
Climatic suitability EN 60068-2-78 EN 60068-2-78
Ambient temperature
Temperature range -10 - 55 °C -10 - 55 °C
Storage temperature
Temperature range -40 - 85 °C -40 - 85 °C
Climatic suitability
Humidity 93 % r. h. at 40 °C 93 % r. h. at 40 °C
Condensation during operation Not permitted Not permitted
EMC EN 60947-5-1, EN 61000-6-2, EN
61326-3-1
EN 60947-5-1, EN 61000-6-2, EN
61326-3-1
Vibration
In accordance with the standard EN 60068-2-6 EN 60068-2-6
Frequency 10 - 55 Hz 10 - 55 Hz
Amplitude 0,35 mm 0,35 mm

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Environmental data 775800 775810
Airgap creepage
In accordance with the standard EN 60947-1 EN 60947-1
Overvoltage category III / II III / II
Pollution degree 2 2
Rated insulation voltage 250 V 250 V
Rated impulse withstand voltage 4 kV 4 kV
Protection type
Housing IP40 IP40
Terminals IP20 IP20
Mounting area (e.g. control cab-
inet) IP54 IP54
Mechanical data 775800 775810
Mounting position Any Any
Mechanical life 10,000,000 cycles 10,000,000 cycles
Material
Bottom PPO UL 94 V0 PPO UL 94 V0
Front ABS UL 94 V0 ABS UL 94 V0
Top PPO UL 94 V0 PPO UL 94 V0
Connection type Screw terminal Screw terminal
Mounting type Fixed Fixed
Conductor cross section with screw
terminals
1 core flexible 0,2 - 4 mm², 24 - 10 AWG 0,2 - 4 mm², 24 - 10 AWG
2 core with the same cross sec-
tion, flexible with crimp connect-
ors, no plastic sleeve 0,2 - 2,5 mm², 24 - 14 AWG 0,2 - 2,5 mm², 24 - 14 AWG
2 core with the same cross sec-
tion, flexible without crimp con-
nectors or with TWIN crimp con-
nectors 0,2 - 2,5 mm², 24 - 14 AWG 0,2 - 2,5 mm², 24 - 14 AWG
Torque setting with screw terminals 0,6 Nm 0,6 Nm
Dimensions
Height 87 mm 87 mm
Width 90 mm 90 mm
Depth 121 mm 121 mm
Weight 500 g 500 g
Where standards are undated, the 2017-01 latest editions shall apply.
Order no. 775830 -775850
General 775830 775850
Approvals
CCC, EAC (Eurasian), TÜV, cU-
Lus Listed
CCC, EAC (Eurasian), TÜV, cU-
Lus Listed

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Electrical data 775830 775850
Supply voltage
Voltage 110 V 230 V
Kind AC AC
Voltage tolerance -15 %/+10 % -15 %/+10 %
Output of external power supply
(AC) 5 VA 5 VA
Frequency range AC 50 - 60 Hz 50 - 60 Hz
Duty cycle 100 % 100 %
Inputs 775830 775850
Number 1 1
Voltage at
Start circuit DC 24 V 24 V
Feedback loop DC 24 V 24 V
Current at
Start circuit DC 50 mA 50 mA
Feedback loop DC 50 mA 50 mA
Max. overall line capacitance
Clmax 300 nF 75 nF
Relay outputs 775830 775850
Number of output contacts
Safety contacts (N/O), instant-
aneous 3 3
Auxiliary contacts (N/C) 1 1
Max. short circuit current IK 1 kA 1 kA
Utilisation category
In accordance with the standard EN 60947-4-1 EN 60947-4-1
Utilisation category of safety con-
tacts
AC1 at 240 V 240 V
Min. current 0,01 A 0,01 A
Max. current 8 A 8 A
Max. power 2000 VA 2000 VA
DC1 at 24 V 24 V
Min. current 0,01 A 0,01 A
Max. current 8 A 8 A
Max. power 200 W 200 W
Utilisation category of auxiliary con-
tacts
AC1 at 240 V 240 V
Min. current 0,01 A 0,01 A
Max. current 8 A 8 A
Max. power 2000 VA 2000 VA
DC1 at 24 V 24 V
Min. current 0,01 A 0,01 A
Max. current 8 A 8 A
Max. power 200 W 200 W

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Relay outputs 775830 775850
Utilisation category
In accordance with the standard EN 60947-5-1 EN 60947-5-1
Utilisation category of safety con-
tacts
AC15 at 230 V 230 V
Max. current 5 A 5 A
DC13 (6 cycles/min) at 24 V 24 V
Max. current 7 A 7 A
Utilisation category of auxiliary con-
tacts
AC15 at 230 V 230 V
Max. current 5 A 5 A
DC13 (6 cycles/min) at 24 V 24 V
Max. current 7 A 7 A
Utilisation category in accordance
with UL
Voltage 240 V AC G. P. 240 V AC G. P.
With current 8 A 8 A
Voltage 24 V DC Resistive 24 V DC Resistive
With current 5 A 5 A
Pilot Duty B300, R300 B300, R300
External contact fuse protection,
safety contacts
In accordance with the standard EN 60947-5-1 EN 60947-5-1
Max. melting integral 240 A²s 240 A²s
Blow-out fuse, quick 10 A 10 A
Blow-out fuse, slow 6 A 6 A
Blow-out fuse, gG 10 A 10 A
Circuit breaker 24V AC/DC,
characteristic B/C 6 A 6 A
External contact fuse protection,
auxiliary contacts
Max. melting integral 240 A²s 240 A²s
Blow-out fuse, quick 10 A 10 A
Blow-out fuse, slow 6 A 6 A
Blow-out fuse, gG 10 A 10 A
Circuit breaker 24 V AC/DC,
characteristic B/C 6 A 6 A
Conventional thermal current 8 A 8 A
Contact material AgSnO2 + 0,2 µm Au AgSnO2 + 0,2 µm Au
Times 775830 775850
Switch-on delay
With automatic start typ. 150 ms 150 ms
With automatic start max. 250 ms 250 ms
With manual start typ. 150 ms 150 ms
With manual start max. 250 ms 250 ms

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Times 775830 775850
Delay-on de-energisation
With E-STOP typ. 50 ms 50 ms
With E-STOP, duty cycle ≥6s,
max. 100 ms 100 ms
With E-STOP, duty cycle <6s,
max. 250 ms 250 ms
With power failure typ. 50 ms 50 ms
With power failure max. 250 ms 250 ms
Recovery time at max. switching
frequency 1/s
After E-STOP 250 ms 250 ms
After power failure 250 ms 250 ms
Environmental data 775830 775850
Climatic suitability EN 60068-2-78 EN 60068-2-78
Ambient temperature
Temperature range -10 - 55 °C -10 - 55 °C
Storage temperature
Temperature range -40 - 85 °C -40 - 85 °C
Climatic suitability
Humidity 93 % r. h. at 40 °C 93 % r. h. at 40 °C
Condensation during operation Not permitted Not permitted
EMC EN 60947-5-1, EN 61000-6-2, EN
61326-3-1
EN 60947-5-1, EN 61000-6-2, EN
61326-3-1
Vibration
In accordance with the standard EN 60068-2-6 EN 60068-2-6
Frequency 10 - 55 Hz 10 - 55 Hz
Amplitude 0,35 mm 0,35 mm
Airgap creepage
In accordance with the standard EN 60947-1 EN 60947-1
Overvoltage category III / II III / II
Pollution degree 2 2
Rated insulation voltage 250 V 250 V
Rated impulse withstand voltage 4 kV 4 kV
Protection type
Housing IP40 IP40
Terminals IP20 IP20
Mounting area (e.g. control cab-
inet) IP54 IP54
Mechanical data 775830 775850
Mounting position Any Any
Mechanical life 10,000,000 cycles 10,000,000 cycles
Material
Bottom PPO UL 94 V0 PPO UL 94 V0
Front ABS UL 94 V0 ABS UL 94 V0
Top PPO UL 94 V0 PPO UL 94 V0

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Mechanical data 775830 775850
Connection type Screw terminal Screw terminal
Mounting type Fixed Fixed
Conductor cross section with screw
terminals
1 core flexible 0,2 - 4 mm², 24 - 10 AWG 0,2 - 4 mm², 24 - 10 AWG
2 core with the same cross sec-
tion, flexible with crimp connect-
ors, no plastic sleeve 0,2 - 2,5 mm², 24 - 14 AWG 0,2 - 2,5 mm², 24 - 14 AWG
2 core with the same cross sec-
tion, flexible without crimp con-
nectors or with TWIN crimp con-
nectors 0,2 - 2,5 mm², 24 - 14 AWG 0,2 - 2,5 mm², 24 - 14 AWG
Torque setting with screw terminals 0,6 Nm 0,6 Nm
Dimensions
Height 87 mm 87 mm
Width 90 mm 90 mm
Depth 121 mm 121 mm
Weight 500 g 500 g
Where standards are undated, the 2017-01 latest editions shall apply.
Safety characteristic data
NOTICE
You must comply with the safety characteristic data in order to achieve the
required safety level for your plant/machine.
Operating
mode
EN ISO
13849-1:
2015
PL
EN ISO
13849-1:
2015
Category
EN62061
SIL CL
EN62061
PFHD [1/h]
IEC 61511
SIL
IEC 61511
PFD
EN ISO
13849-1:
2015
TM [year]
–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.