Pilz PZA Series User manual

PZA
Operating Manual-18219-EN-07
}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 PZA
18219-EN-07 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
Types: AC 7
Types: DC 8
Function description 8
Installation 9
Wiring 9
Preparing for Operation 10
Operation 10
Status indicators 10
Faults – Interference 11
Dimensions in mm 11
Technical details 11
Safety characteristic data 28
Supplementary data 29
Service life graph 29
Order reference 30
EC declaration of conformity 30

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18219-EN-07 4
Introduction
Validity of documentation
This documentation is valid for the product PZA. 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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INFORMATION
This gives advice on applications and provides information on special fea-
tures.
Safety
Intended use
The unit operates as a time delay device with delay-on energisation
}In accordance with EN ISO 14119 (release with delay through timer)
}in safety circuits in accordance with VDE 0113-1 and IEC 60204-1
The unit is designed for use with
}Safety relays from the PNOZ series
}safety gate monitors from the PST series
The category that can be achieved in accordance with EN ISO13849-1 depends on the
category of the base unit. PZA 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.
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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18219-EN-07 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.

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Unit features
}Positive-guided relay outputs:
– 1 safety contact (N/O), delay-on energisation
– 2 auxiliary contacts (N/C), delay-on energisation
}LED display for:
– Supply voltage
– Switch state safety output
}12 time values, 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.
Block diagram/terminal configuration
Types: AC
}UB: 24 V AC; Order no. 774020, 774031
}UB: 110 - 120 VAC; Order no. 774023, 774035
}UB: 230 V AC; Order no. 774026, 774038, 774040
*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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Types: DC
}UB: 24 V DC; Order no. 774028, 774029, 774030, 774041
*Insulation between the non-marked area and the relay contacts: Basic insulation (over-
voltage category III), Protective separation (overvoltage category II)
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 is closed and the auxiliary con-
tacts 25-26, 35-36 will open once the set delay-on energisation has elapsed. The
"OUT" LED is lit.
}The input circuit is opened (supply voltage is interrupted)
The safety contact 17-18 is redundantly opened and the auxiliary contacts 25-26, 35-36
will close. The LEDs "POWER" and "OUT" go out.
The delay time can be set in 12 stages on the front of the unit using a screwdriver.
[1] [2] [3]
Legend
}Input: Input circuit
}Feedback: Feedback loop
}Output safe: Safety contact
}Output aux: Auxiliary contacts

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}tv: Delay time
[1]: Normal operating cycle
[2]: Fault: Input circuit opened too early
[3]: Fault: Feedback loop closed too late after tv elapsed
NOTICE
At the earliest the safety contacts close after the set delay time - 15% of the
set value, even in the case of a component failure.
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 wire that can withstand 60/75°C.
}Sufficient fuse protection must be provided on all output contacts with capacitive and in-
ductive loads.
}Do not switch low currents using contacts that have been used previously with high cur-
rents.
}Ensure the wiring and EMC requirements of EN 60204-1 are met.
}On 24 VDC devices:
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.
}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 cir-
cuit-proof supply voltage with current limitation.

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Preparing for Operation
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
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.

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Faults – Interference
}LED "POWER" does not light: Short circuit or no supply voltage.
}If an error occurs in the time relay the safety contact remains open and the auxiliary
contacts remain closed. The time value goes toward infinity.
Dimensions in mm
45 ( 1,77 ")
121 (4.76")
75 (2.95")
87 (3.42")
Technical details
Order no. 774030 – 774035
See below for more order numbers
General 774030 774031 774035
Approvals
CCC, CE, EAC (Euras-
ian), TÜV, cULus Listed
CCC, CE, EAC (Euras-
ian), TÜV, cULus Listed
CCC, CE, EAC (Euras-
ian), TÜV, cULus Listed
Electrical data 774030 774031 774035
Supply voltage
Voltage 24 V 24 V 110 - 120 V
Kind DC AC AC
Voltage tolerance -15 %/+10 % -15 %/+10 % -15 %/+10 %
Output of external
power supply (AC) – 4,5 VA 4,5 VA
Output of external
power supply (DC) 3 W – –
Frequency range AC – 50 - 60 Hz 50 - 60 Hz
Residual ripple DC 10 % – –
Duty cycle 100 % 100 % 100 %
External unit fuse protec-
tion F1 min. 1 A 1 A 1 A
External unit fuse protec-
tion F1 max.
Max. conductor cross
section
Max. conductor cross
section
Max. conductor cross
section

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Inputs 774030 774031 774035
Voltage at
Feedback loop DC 24 V 24 V 24 V
Current at
Feedback loop DC 50 mA 50 mA 50 mA
Relay outputs 774030 774031 774035
Number of output con-
tacts
Safety contacts (N/O),
delayed 111
Auxiliary contacts (N/
C), delayed 222
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 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
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 4 A 4 A 4 A
DC13 (6 cycles/min) at 24 V 24 V 24 V
Max. current 3 A 3 A 3 A

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Relay outputs 774030 774031 774035
Utilisation category of
auxiliary contacts
AC15 at 230 V 230 V 230 V
Max. current 4 A 4 A 4 A
DC13 (6 cycles/min) at 24 V 24 V 24 V
Max. current 3 A 3 A 3 A
Utilisation category in ac-
cordance with UL
Voltage 240 V AC G. P. 240 V AC G. P. 240 V AC G. P.
With current 6 A 6 A 6 A
Voltage 24 V DC Resistive 24 V DC Resistive 24 V DC Resistive
With current 5 A 5 A 5 A
Pilot Duty B300, R300 B300, R300 B300, R300
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 240 A²s 240 A²s 240 A²s
Blow-out fuse, quick 6 A 6 A 6 A
Blow-out fuse, slow 4 A 4 A 4 A
Blow-out fuse, gG 6 A 6 A 6 A
Circuit breaker 24V
AC/DC, characteristic
B/C 4 A 4 A 4 A
External contact fuse pro-
tection, auxiliary contacts
Max. melting integral 240 A²s 240 A²s 240 A²s
Blow-out fuse, quick 6 A 6 A 6 A
Blow-out fuse, slow 4 A 4 A 4 A
Blow-out fuse, gG 6 A 6 A 6 A
Circuit breaker 24 V
AC/DC, characteristic
B/C 4 A 4 A 4 A
Conventional thermal cur-
rent 6 A 6 A 6 A
Contact material AgSnO2 + 0,2 µm Au AgSnO2 + 0,2 µm Au AgSnO2 + 0,2 µm Au
Times 774030 774031 774035
Delay-on de-energisation
With power failure typ. 40 ms 40 ms 40 ms
With power failure max. 70 ms 70 ms 70 ms
Recovery time at max.
switching frequency 1/s
After power failure 80 ms 80 ms 80 ms
Delay time tv 3 s, 4 s, 5 s, 7 s, 9 s, 12
s, 15 s, 18 s, 21 s, 24 s,
27 s, 30 s
3 s, 4 s, 5 s, 7 s, 9 s, 12
s, 15 s, 18 s, 21 s, 24 s,
27 s, 30 s
3 s, 4 s, 5 s, 7 s, 9 s, 12
s, 15 s, 18 s, 21 s, 24 s,
27 s, 30 s
Time accuracy -15% / +15% +50 ms -15% / +15% +50 ms -15% / +15% +50 ms
Repetition accuracy 2 % 2 % 2 %

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Times 774030 774031 774035
Min. delay time (operating
mode delay-on energisa-
tion) tv - 15 % tv - 15 % tv - 15 %
Environmental data 774030 774031 774035
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 61326-3-1
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 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 / II III / II III / II
Pollution degree 222
Rated insulation voltage 250 V 250 V 250 V
Rated impulse withstand
voltage 4 kV 4 kV 4 kV
Protection type
Housing IP40 IP40 IP40
Terminals IP20 IP20 IP20
Mounting area (e.g.
control cabinet) IP54 IP54 IP54
Mechanical data 774030 774031 774035
Mounting position Any Any Any
Mechanical life 10,000,000 cycles 10,000,000 cycles 10,000,000 cycles
Material
Bottom PPO UL 94 V0 PPO UL 94 V0 PPO UL 94 V0
Front ABS UL 94 V0 ABS UL 94 V0 ABS UL 94 V0
Top PPO UL 94 V0 PPO UL 94 V0 PPO UL 94 V0
Connection type Screw terminal Screw terminal Screw terminal
Mounting type Fixed Fixed Fixed

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Mechanical data 774030 774031 774035
Conductor cross section
with screw terminals
1 core flexible 0,2 - 4 mm², 24 - 10 AWG 0,2 - 4 mm², 24 - 10 AWG 0,2 - 4 mm², 24 - 10 AWG
2 core with the same
cross section, flexible
with crimp connectors,
no plastic sleeve
0,2 - 2,5 mm², 24 - 14
AWG
0,2 - 2,5 mm², 24 - 14
AWG
0,2 - 2,5 mm², 24 - 14
AWG
2 core with the same
cross section, flexible
without crimp connect-
ors or with TWIN crimp
connectors
0,2 - 2,5 mm², 24 - 14
AWG
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 0,6 Nm
Dimensions
Height 87 mm 87 mm 87 mm
Width 45 mm 45 mm 45 mm
Depth 121 mm 121 mm 121 mm
Weight 255 g 350 g 350 g
Order no. 774038 – 774041
General 774038 774040 774041
Approvals
CCC, CE, EAC (Euras-
ian), TÜV, cULus Listed
CCC, CE, EAC (Euras-
ian), TÜV, cULus Listed
CCC, CE, EAC (Euras-
ian), TÜV, cULus Listed
Electrical data 774038 774040 774041
Supply voltage
Voltage 230 V 230 V 24 V
Kind AC AC DC
Voltage tolerance -15 %/+10 % -15 %/+10 % -15 %/+10 %
Output of external
power supply (AC) 4,5 VA 4,5 VA –
Output of external
power supply (DC) – – 3 W
Frequency range AC 50 - 60 Hz 50 - 60 Hz –
Residual ripple DC – – 10 %
Duty cycle 100 % 100 % 100 %
External unit fuse protec-
tion F1 min. 1 A 1 A 1 A
External unit fuse protec-
tion F1 max.
Max. conductor cross
section
Max. conductor cross
section
Max. conductor cross
section
Inputs 774038 774040 774041
Voltage at
Feedback loop DC 24 V 24 V 24 V
Current at
Feedback loop DC 50 mA 50 mA 50 mA

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Relay outputs 774038 774040 774041
Number of output con-
tacts
Safety contacts (N/O),
delayed 111
Auxiliary contacts (N/
C), delayed 222
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 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
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 4 A 4 A 4 A
DC13 (6 cycles/min) at 24 V 24 V 24 V
Max. current 3 A 3 A 3 A
Utilisation category of
auxiliary contacts
AC15 at 230 V 230 V 230 V
Max. current 4 A 4 A 4 A
DC13 (6 cycles/min) at 24 V 24 V 24 V
Max. current 3 A 3 A 3 A

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Relay outputs 774038 774040 774041
Utilisation category in ac-
cordance with UL
Voltage 240 V AC G. P. 240 V AC G. P. 240 V AC G. P.
With current 6 A 6 A 6 A
Voltage 24 V DC Resistive 24 V DC Resistive 24 V DC Resistive
With current 5 A 5 A 5 A
Pilot Duty B300, R300 B300, R300 B300, R300
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 240 A²s 240 A²s 240 A²s
Blow-out fuse, quick 6 A 6 A 6 A
Blow-out fuse, slow 4 A 4 A 4 A
Blow-out fuse, gG 6 A 6 A 6 A
Circuit breaker 24V
AC/DC, characteristic
B/C 4 A 4 A 4 A
External contact fuse pro-
tection, auxiliary contacts
Max. melting integral 240 A²s 240 A²s 240 A²s
Blow-out fuse, quick 6 A 6 A 6 A
Blow-out fuse, slow 4 A 4 A 4 A
Blow-out fuse, gG 6 A 6 A 6 A
Circuit breaker 24 V
AC/DC, characteristic
B/C 4 A 4 A 4 A
Conventional thermal cur-
rent 6 A 6 A 6 A
Contact material AgSnO2 + 0,2 µm Au AgSnO2 + 0,2 µm Au AgSnO2 + 0,2 µm Au
Times 774038 774040 774041
Delay-on de-energisation
With power failure typ. 40 ms 40 ms 40 ms
With power failure max. 70 ms 70 ms 70 ms
Recovery time at max.
switching frequency 1/s
After power failure 80 ms 80 ms 80 ms
Delay time tv 0,3 s, 0,4 s, 0,5 s, 0,7 s,
0,9 s, 1,2 s, 1,5 s, 1,8 s,
2,1 s, 2,4 s, 2,7 s, 3 s
3 s, 4 s, 5 s, 7 s, 9 s, 12
s, 15 s, 18 s, 21 s, 24 s,
27 s, 30 s
0,3 s, 0,4 s, 0,5 s, 0,7 s,
0,9 s, 1,2 s, 1,5 s, 1,8 s,
2,1 s, 2,4 s, 2,7 s, 3 s
Time accuracy -15% / +15% +50 ms -15% / +15% +50 ms -15% / +15% +50 ms
Repetition accuracy 2 % 2 % 2 %
Min. delay time (operating
mode delay-on energisa-
tion) tv - 15 % tv - 15 % tv - 15 %
Environmental data 774038 774040 774041
Climatic suitability EN 60068-2-78 EN 60068-2-78 EN 60068-2-78

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Environmental data 774038 774040 774041
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 61326-3-1
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 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 / II III / II III / II
Pollution degree 222
Rated insulation voltage 250 V 250 V 250 V
Rated impulse withstand
voltage 4 kV 4 kV 4 kV
Protection type
Housing IP40 IP40 IP40
Terminals IP20 IP20 IP20
Mounting area (e.g.
control cabinet) IP54 IP54 IP54
Mechanical data 774038 774040 774041
Mounting position Any Any Any
Mechanical life 10,000,000 cycles 10,000,000 cycles 10,000,000 cycles
Material
Bottom PPO UL 94 V0 PPO UL 94 V0 PPO UL 94 V0
Front ABS UL 94 V0 ABS UL 94 V0 ABS UL 94 V0
Top PPO UL 94 V0 PPO UL 94 V0 PPO UL 94 V0
Connection type Screw terminal Screw terminal Screw terminal
Mounting type Fixed Fixed Fixed

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Mechanical data 774038 774040 774041
Conductor cross section
with screw terminals
1 core flexible 0,2 - 4 mm², 24 - 10 AWG 0,2 - 4 mm², 24 - 10 AWG 0,2 - 4 mm², 24 - 10 AWG
2 core with the same
cross section, flexible
with crimp connectors,
no plastic sleeve
0,2 - 2,5 mm², 24 - 14
AWG
0,2 - 2,5 mm², 24 - 14
AWG
0,2 - 2,5 mm², 24 - 14
AWG
2 core with the same
cross section, flexible
without crimp connect-
ors or with TWIN crimp
connectors
0,2 - 2,5 mm², 24 - 14
AWG
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 0,6 Nm
Dimensions
Height 87 mm 87 mm 87 mm
Width 45 mm 45 mm 45 mm
Depth 121 mm 121 mm 121 mm
Weight 255 g 350 g 255 g

PZA
Operating Manual PZA
18219-EN-07 20
Order no. 774020 – 774026
General 774020 774023 774026
Approvals
CCC, CE, EAC (Euras-
ian), TÜV, cULus Listed
CCC, CE, EAC (Euras-
ian), TÜV, cULus Listed
CCC, CE, EAC (Euras-
ian), TÜV, cULus Listed
Electrical data 774020 774023 774026
Supply voltage
Voltage 24 V 110 - 120 V 230 V
Kind AC AC AC
Voltage tolerance -15 %/+10 % -15 %/+10 % -15 %/+10 %
Output of external
power supply (AC) 4,5 VA 4,5 VA 4,5 VA
Frequency range AC 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz
Duty cycle 100 % 100 % 100 %
External unit fuse protec-
tion F1 min. 1 A 1 A 1 A
External unit fuse protec-
tion F1 max.
Max. conductor cross
section
Max. conductor cross
section
Max. conductor cross
section
Inputs 774020 774023 774026
Voltage at
Feedback loop DC 24 V 24 V 24 V
Current at
Feedback loop DC 50 mA 50 mA 50 mA
Relay outputs 774020 774023 774026
Number of output con-
tacts
Safety contacts (N/O),
delayed 111
Auxiliary contacts (N/
C), delayed 222
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