Pilz PSWZ X1P User manual

PSWZ X1P
Operating Manual-21005-EN-11
}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 PSWZ X1P
21005-EN-11 | 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
Operating modes ...................................................................................................................... 10
Timing diagram ......................................................................................................................... 11
Installation ..............................................................................................................................11
Wiring ......................................................................................................................................11
Preparing for operation ......................................................................................................... 13
Connection................................................................................................................................ 13
Set standstill detection.............................................................................................................. 14
Application example.................................................................................................................. 15
Operation ................................................................................................................................16
Status indicators ....................................................................................................................... 16
Fault indicators ......................................................................................................................... 17
Faults – Interference .............................................................................................................. 17
Dimensions in mm .................................................................................................................17
Technical details ....................................................................................................................18
Safety characteristic data ......................................................................................................... 31
Supplementary data ..............................................................................................................32
Service life graph ...................................................................................................................... 32

Contents
Operating Manual PSWZ X1P
21005-EN-11 | 4
Order reference ......................................................................................................................34
EC declaration of conformity ................................................................................................ 34

PSWZ X1P
Operating Manual PSWZ X1P
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Introduction
Validity of documentation
This documentation is valid for the product PSWZ X1P. 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 PSWZ X1P
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INFORMATION
This gives advice on applications and provides information on special fea-
tures.
Safety
Intended use
The PSWZ X1P is used for safe standstill monitoring.
The unit is designed for use with
}Standstill monitoring at plants with dangerous machine parts or tools in safety circuits in
accordance with VDE 0113-1 and EN 60204-1
Standstill is only detected on power-free measuring circuits. Residual voltages, induced
voltages or drives within the position control will prevent safe standstill detection!
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 [ 18]).
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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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 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).
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
}Measuring inputs for 3- or 1-phase motors
}Measuring voltage on both channels can be set jointly
}1 Reset input
}Positive-guided relay outputs:
– 2 safety contacts (N/O), instantaneous
– 1 auxiliary contact (N/C), instantaneous
}2 semiconductor outputs
}LED display for:
– Standstill on channel 1/2
– Supply voltage/fault
}Semiconductor outputs signal:
– Supply voltage/fault
– Switch status
}Feedback loop for monitoring external contactors
}Plug-in connection terminals (either spring-loaded terminal or screw terminal)
}See order reference for unit types
Safety features
}The relay meets the following safety requirements:
– The circuit is 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.
}The unit monitors the measuring circuits for open circuit. If an open circuit occurs
between the unit and the motor or on the motor itself, the unit immediately switches off.
}The standstill monitor prevents the plant from being enabled in the following cases:
– Power supply failure
– Component failure
– Measuring circuits are open circuit
– Coil defect/open circuit

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Block diagram/terminal configuration
**Insulation against the non-marked area and between the relay contacts: Basic insulation
(overvoltage category III), protective separation (overvoltage category II); at 250 V, 4 kV
***Insulation against the non-marked area and between the measurement connections: Ba-
sic insulation (overvoltage category III), protective separation (overvoltage category II); at
690 V, 6 kV
}Channel 1: L1-L3
}Channel 2: L2-L3
Function description
The device uses two separate measuring channels to measure the regenerated voltage, in-
duced from the motor during the rundown period. If the voltage falls below the set response
value (standstill threshold), the PSWZ X1P enables the monitored plant.
When used with frequency converters, the PSWZ X1P cannot detect standstill until the con-
troller inhibit has been switched off.
After the supply voltage UB is switched on, the unit performs a self test. The unit simulates a
situation in which the release value is exceeded and the measuring circuit has an open cir-
cuit. The correct function of the output relay and feedback loop is also tested. The test
takes approx. 1.5 s.
The unit is ready for operation when the feedback loop is closed and the measuring circuits
are not interrupted.
}Procedure when the measuring voltage falls below the response value Uon on both chan-
nels L1-L3 and L2-L3:
– LEDs "POWER", "CH.1 IN", "CH.2 IN" and "OUTPUT" are lit.
– Safety contacts 13-14 and 23-24 are closed, auxiliary contact 41-42 is open.
– A high signal is present at semiconductor output Y32.
}Procedure when after the motor has started, the voltage in one of the two measuring cir-
cuits exceeds the release value Uoff:
– Safety contacts 13-14 and 23-24 are opened redundantly, auxiliary contact 41-42 is
closed.

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– A low signal is present at semiconductor output Y32.
– LEDs "CH.1 IN", "CH.2 IN" and "OUTPUT" go out.
To reactivate, the voltage at both channels L1-L3 and L2-L3 must fall below the response
value Uon within the time tg (simultaneity monitoring) and the feedback loop must be closed.
The response value Uon can be set jointly for both channels in order to suit the motor that is
to be monitored. The release value Uoff (hysteresis) corresponds to twice the response
value.
If the simultaneity requirement is exceeded, the "FAULT" LED is lit and on the semicon-
ductor output Y35 there is a High signal. The PSWZ X1P does not enable the monitored
plant. The fault is reset by applying a High signal and then a Low signal at the reset input.
Self test
An internal self test is carried out during initial commissioning and each time the supply
voltage is switched off and on. The process simulates switching all measuring voltages on
and then off again. Provided no error occurs during the self test, the unit will then be ready
for operation.
Operating modes
}Single-phase operation:
– One measuring circuit (calculated at two different measuring points) affects both
channels
}Three-phase operation:
– Two redundant (identical) measuring circuits affect channel 1 and 2
– Voltages in the measuring circuit are monitored (failsafe in the event of a short circuit)