Pilz PZW 774017 User manual

PZW
Operating Manual-19157-EN-08
}Safe monitoring 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 PZW
19157-EN-08 | 3
Introduction ............................................................................................................................4
Validity of documentation.......................................................................................................... 4
Using the documentation .......................................................................................................... 4
Definition of symbols................................................................................................................. 4
Safety ...................................................................................................................................... 5
Intended use ............................................................................................................................. 5
Safety regulations ..................................................................................................................... 6
Safety assessment ................................................................................................................... 6
Use of qualified personnel ........................................................................................................ 6
Warranty and liability ................................................................................................................ 6
Disposal .................................................................................................................................... 6
For your safety.......................................................................................................................... 7
Unit features ...........................................................................................................................7
Safety features ....................................................................................................................... 7
Block diagram/terminal configuration ................................................................................. 8
Types: AC ................................................................................................................................. 8
Types: DC................................................................................................................................. 8
Function description ............................................................................................................. 9
Installation ..............................................................................................................................10
Wiring ......................................................................................................................................10
Preparing for Operation ........................................................................................................ 11
Connection................................................................................................................................ 11
Application example.................................................................................................................. 11
Operation ................................................................................................................................12
Status indicators ....................................................................................................................... 12
Faults – Interference .............................................................................................................. 12
Dimensions in mm .................................................................................................................13
Technical details ....................................................................................................................13
Safety characteristic data ......................................................................................................... 21
Supplementary data ..............................................................................................................22
Service life graph ...................................................................................................................... 22
Order reference ......................................................................................................................22
EC declaration of conformity ................................................................................................ 23

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Operating Manual PZW
19157-EN-08 | 4
Introduction
Validity of documentation
This documentation is valid for the product PZW. It is valid until new documentation is pub-
lished.
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 PZW
19157-EN-08 | 5
INFORMATION
This gives advice on applications and provides information on special fea-
tures.
Safety
Intended use
The unit operates as a pulse relay
}in accordance with EN ISO 12100:2010 section 6.2.11.10, 6.3.2.4 and 3.28.9 (inching cir-
cuit for limited movement of hazardous machine components during installation, set up
and positioning)
}In safety circuits in accordance with EN60204-1
The unit is designed for use with
}Safety relays from the PNOZ series
}Two-hand control relays from the P2HZ series
The category that can be achieved in accordance with EN ISO13849-1 depends on the
category of the base unit. PZW may not exceed this.
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).
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.

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Operating Manual PZW
19157-EN-08 | 6
Safety regulations
Safety assessment
Before using a device, a safety assessment in accordance with the Machinery Directive is
required.
The product as an individual component fulfils the functional safety requirements in accord-
ance with EN ISO 13849 and EN 62061. However, this does not guarantee the functional
safety of the overall plant/machine. To achieve the relevant safety level of the overall plant/
machine’s required safety functions, each safety function needs to be considered separ-
ately.
Use of qualified personnel
The products may only be assembled, installed, programmed, commissioned, operated,
maintained and decommissioned by persons who are competent to do so.
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 prevention,
}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 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-related
characteristic data.
}When decommissioning, please comply with local regulations regarding the disposal of
electronic devices (e.g. Electrical and Electronic Equipment Act).

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Operating Manual PZW
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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.
Unit features
}Positive-guided relay outputs:
– 1 safety contact (N/O), pulsing
– 2 auxiliary contacts (N/C), pulsing
}LED display for:
– Supply voltage
– Switch state safety output
}12 pulse times, set via rotary switch
}Feedback loop for monitoring external contactors
}See order reference for unit types
Safety features
The 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.

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Operating Manual PZW
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Block diagram/terminal configuration
Types: AC
}UB: 110 - 120 VAC; Order no. 774044
}UB: 230 V AC; Order no. 774017
*Insulation between the non-marked area and the relay contacts: Basic insulation (over-
voltage category III), Protective separation (overvoltage category II)
Types: DC
}UB: 24 VDC; Order no. 774019, 774042
*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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Function description
The unit is ready for operation when the feedback loop Y1-Y2 is closed.
}Input circuit closed (supply voltage is present)
"POWER" LED is illuminated. The safety contact 17-18 will be closed immediately and
the auxiliary contacts 25-26, 35-36 will open, time sequence starts. The "OUT" LED is lit.
The safety contact 17-18 is opened redundantly and the auxiliary contacts 25-26, 35-36
will close once the set pulse time has elapsed. The "OUT" LED is goes out.
The input circuit must be closed for at least as long as the set delay time tv (pulse time).
When the input or feedback loop is interrupted prematurely, the time sequence is cancelled.
The safety contact 17-18 will open and the auxiliary contacts 25-26, 35-36 will close. The
LEDs "POWER" and "OUT" go out.
The delay time tv (pulse time) can be set in 12 stages.
[1] [2] [3] [4]
Legend
}Input: Input circuit
}Feedback: Feedback loop
}Output safe: Safety contact
}Output aux: Auxiliary contacts
}tv: Delay time (pulse time)
[1]: Normal operating cycle
[2]: Fault: Input circuit opened too early
[3]: Fault: Feedback loop closed too late within tv
[4]: Fault: Feedback loop closed too late after tv elapsed
NOTICE
At the latest the safety contacts open after the set delay time + 50 ms +
15% of the set value, even in the case of a component failure.

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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" must be followed.
}The output 17-18 is a safety contact, outputs 25-26, 35-36 are auxiliary contacts (e.g. for
display).
}Do not use auxiliary contacts 25-26, 35-36 for safety circuits!
}To prevent contact welding, a fuse should be connected before the output contacts (see
Technical details).
}Do not connect undesignated terminals.
}Calculation of the max. cable length lmax in the input circuit:
Rlmax
Rl / km
Imax =
Rlmax = max. overall cable resistance (see Technical details)
Rl/km = cable resistance/km
}Use copper wiring with a temperature stability of 60/75 °C.
}To prevent EMC interferences (particularly common-mode interferences) the measures
described in EN60204-1 must be executed. This includes the separate routing of cables
of the control circuits (input, start and feedback loop) from other cables for energy trans-
mission or the shielding of cables, for example.
}Adequate protection must be provided on all output contacts with capacitive and inductive
loads.
}Do not switch low currents using contacts that have been used previously with high cur-
rents.
}On 24 VDC devices:
The power supply must comply with the regulations for extra low voltages with protective
electrical separation (SELV, PELV) in accordance with VDE 0100, Part 410.
}In devices for 24 V DC shorts between the input circuit and feedback loop or earth faults
in the feedback loop can damage the unit. We recommend the use of a short circuit-proof
supply voltage with current limitation.

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Operating Manual PZW
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Preparing for Operation
Connection
Supply voltage AC DC
Input circuit is driven by connect-
ing UB
A1
A2
L1
N
FE
F1
A1
A2
L+
L-
F1
Feedback loop Without feedback loop monitor-
ing
With feedback loop monitoring
Link or contacts from external con-
tactors
17
Y1
K5
K5
L1
N
K6
K6
Y2
18
Application example
L+
L-
S1
S2
PZW
S4
S5
PNOZ X3
K1 K2
K1 K2
K2
K1
S3
K1
K2
17 25 35 Y1 Y2
A1
26 36 A2
18
S31 S32 S11 S12 S13 S14
A1 B1 13 23 33 41
14 24 34 42 B2 A2
Y31 Y32 S21 S22 S33 S34

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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 d at least 1x per month
}for SIL CL 1/PL c 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.
Status indicators
LEDs indicate the status and errors during operation:
LED on
POWER
Supply voltage is present.
OUT
Safety contact is closed.
Faults – Interference
}LED "POWER" does not light: Short circuit or no supply voltage.
}Contact malfunctions: If the contacts have welded, reactivation will not be possible after
the input circuit has opened.

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Dimensions in mm
45 ( 1,77 ")
121 (4.76")
75 (2.95")
87 (3.42")
Technical details
Order no. 774017 – 774019
See below for more order numbers
General 774017 774019
Certifications
CE, EAC (Eurasian), TÜV, cULus
Listed
CE, EAC (Eurasian), TÜV, cULus
Listed
Electrical data 774017 774019
Supply voltage
Voltage 230 V 24 V
Kind AC DC
Voltage tolerance -15 %/+10 % -15 %/+10 %
Output of external power supply
(AC) 4,5 VA –
Output of external power supply
(DC) – 3 W
Frequency range AC 50 - 60 Hz –
Residual ripple DC – 10 %
Duty cycle 100 % 100 %
External unit fuse protection F1
min. 1 A 1 A
External unit fuse protection F1
max. Max. conductor cross section Max. conductor cross section
Inputs 774017 774019
Voltage at
Feedback loop DC 24 V 24 V
Current at
Feedback loop DC 50 mA 50 mA

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Relay outputs 774017 774019
Number of output contacts
Safety contacts (N/O), delayed 1 1
Auxiliary contacts (N/C),
delayed 2 2
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 6 A 6 A
Max. power 1500 VA 1500 VA
DC1 at 24 V 24 V
Min. current 0,01 A 0,01 A
Max. current 6 A 6 A
Max. power 150 W 150 W
Utilisation category of auxiliary con-
tacts
AC1 at 240 V 240 V
Min. current 0,01 A 0,01 A
Max. current 6 A 6 A
Max. power 1500 VA 1500 VA
DC1 at 24 V 24 V
Min. current 0,01 A 0,01 A
Max. current 6 A 6 A
Max. power 150 W 150 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 4 A 4 A
DC13 (6 cycles/min) at 24 V 24 V
Max. current 3 A 3 A
Utilisation category of auxiliary con-
tacts
AC15 at 230 V 230 V
Max. current 4 A 4 A
DC13 (6 cycles/min) at 24 V 24 V
Max. current 3 A 3 A

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Relay outputs 774017 774019
Utilisation category in accordance
with UL
Voltage 240 V AC G. P. 240 V AC G. P.
With current 6 A 6 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 6 A 6 A
Blow-out fuse, slow 4 A 4 A
Blow-out fuse, gG 6 A 6 A
Circuit breaker 24V AC/DC,
characteristic B/C 4 A 4 A
External contact fuse protection,
auxiliary contacts
Max. melting integral 240 A²s 240 A²s
Blow-out fuse, quick 6 A 6 A
Blow-out fuse, slow 4 A 4 A
Blow-out fuse, gG 6 A 6 A
Circuit breaker 24 V AC/DC,
characteristic B/C 4 A 4 A
Conventional thermal current 6 A 6 A
Contact material AgSnO2 + 0,2 µm Au AgSnO2 + 0,2 µm Au
Times 774017 774019
Recovery time at max. switching
frequency 1/s
After power failure 80 ms 80 ms
Delay time tv 0,5 s, 1 s, 2 s, 3 s, 4 s, 5 s, 7 s, 10
s, 15 s, 20 s, 25 s, 30 s
0,5 s, 1 s, 2 s, 3 s, 4 s, 5 s, 7 s, 10
s, 15 s, 20 s, 25 s, 30 s
Time accuracy -15% / +15% +50 ms -15% / +15% +50 ms
Repetition accuracy 2 % 2 %
Max. delay time tv + 15 % + 50 ms tv + 15 % + 50 ms
Environmental data 774017 774019
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

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Environmental data 774017 774019
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 774017 774019
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
Stripping length with screw termin-
als 8 mm 8 mm
Dimensions
Height 87 mm 87 mm
Width 45 mm 45 mm
Depth 121 mm 121 mm
Weight 350 g 255 g
Where standards are undated, the 2020-07 latest editions shall apply.

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Order no. 774042 – 774044
General 774042 774044
Certifications
CE, EAC (Eurasian), TÜV, cULus
Listed
CE, EAC (Eurasian), TÜV, cULus
Listed
Electrical data 774042 774044
Supply voltage
Voltage 24 V 110 - 120 V
Kind DC AC
Voltage tolerance -15 %/+10 % -15 %/+10 %
Output of external power supply
(AC) – 4,5 VA
Output of external power supply
(DC) 3 W –
Frequency range AC – 50 - 60 Hz
Residual ripple DC 10 % –
Duty cycle 100 % 100 %
External unit fuse protection F1
min. 1 A 1 A
External unit fuse protection F1
max. Max. conductor cross section Max. conductor cross section
Inputs 774042 774044
Voltage at
Feedback loop DC 24 V 24 V
Current at
Feedback loop DC 50 mA 50 mA
Relay outputs 774042 774044
Number of output contacts
Safety contacts (N/O), delayed 1 1
Auxiliary contacts (N/C),
delayed 2 2
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 6 A 6 A
Max. power 1500 VA 1500 VA
DC1 at 24 V 24 V
Min. current 0,01 A 0,01 A
Max. current 6 A 6 A
Max. power 150 W 150 W

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Relay outputs 774042 774044
Utilisation category of auxiliary con-
tacts
AC1 at 240 V 240 V
Min. current 0,01 A 0,01 A
Max. current 6 A 6 A
Max. power 1500 VA 1500 VA
DC1 at 24 V 24 V
Min. current 0,01 A 0,01 A
Max. current 6 A 6 A
Max. power 150 W 150 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 4 A 4 A
DC13 (6 cycles/min) at 24 V 24 V
Max. current 3 A 3 A
Utilisation category of auxiliary con-
tacts
AC15 at 230 V 230 V
Max. current 4 A 4 A
DC13 (6 cycles/min) at 24 V 24 V
Max. current 3 A 3 A
Utilisation category in accordance
with UL
Voltage 240 V AC G. P. 240 V AC G. P.
With current 6 A 6 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 6 A 6 A
Blow-out fuse, slow 4 A 4 A
Blow-out fuse, gG 6 A 6 A
Circuit breaker 24V AC/DC,
characteristic B/C 4 A 4 A

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Relay outputs 774042 774044
External contact fuse protection,
auxiliary contacts
Max. melting integral 240 A²s 240 A²s
Blow-out fuse, quick 6 A 6 A
Blow-out fuse, slow 4 A 4 A
Blow-out fuse, gG 6 A 6 A
Circuit breaker 24 V AC/DC,
characteristic B/C 4 A 4 A
Conventional thermal current 6 A 6 A
Contact material AgSnO2 + 0,2 µm Au AgSnO2 + 0,2 µm Au
Times 774042 774044
Recovery time at max. switching
frequency 1/s
After power failure 80 ms 80 ms
Delay time tv 0,05 s, 0,1 s, 0,2 s, 0,3 s, 0,4 s,
0,5 s, 0,7 s, 1 s, 1,5 s, 2 s, 2,5 s, 3
s
0,05 s, 0,1 s, 0,2 s, 0,3 s, 0,4 s,
0,5 s, 0,7 s, 1 s, 1,5 s, 2 s, 2,5 s, 3
s
Time accuracy -15% / +15% +50 ms -15% / +15% +50 ms
Repetition accuracy 2 % 2 %
Max. delay time tv + 15 % + 50 ms tv + 15 % + 50 ms
Environmental data 774042 774044
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

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Mechanical data 774042 774044
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
Stripping length with screw termin-
als 8 mm 8 mm
Dimensions
Height 87 mm 87 mm
Width 45 mm 45 mm
Depth 121 mm 121 mm
Weight 255 g 350 g
Where standards are undated, the 2020-07 latest editions shall apply.