Pilz P2HZ X3 User manual
P2HZ X3
Operating Manual-19484-EN-06
}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 P2HZ X3
19484-EN-06 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 10
Status indicators 11
Faults – Interference 11
Dimensions in mm 11
Technical details 12
Safety characteristic data 15
Supplementary data 15
Service life graph 16
Order reference 16
EC declaration of conformity 16
P2HZ X3
Operating Manual P2HZ X3
19484-EN-06 4
Introduction
Validity of documentation
This documentation is valid for the product P2HZ X3. 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.
P2HZ X3
Operating Manual P2HZ X3
19484-EN-06 5
INFORMATION
This gives advice on applications and provides information on special fea-
tures.
Safety
Intended use
The two-hand control relay P2HZ X3 meets the requirements of EN 574 Type III C. It forces
a press operator to keep his hands out of the hazardous area during the dangerous closing
movement, so avoiding hand injuries.
The P2HZ X3 is suitable for use on controllers for metalworking presses as a block for sim-
ultaneity.
The device can be used as a hand protection device in accordance with the following tech-
nical regulations:
}Mechanical presses (EN 692)
}Hydraulic presses (EN 693)
Or safety circuits in accordance with EN 60204-1; VDE 0113-1.
The supply voltage for the two-hand control relay must only be connected downstream of
the shutdown device in accordance with §9VBG7n5.1/2.
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 [ 15]).
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.
P2HZ X3
Operating Manual P2HZ X3
19484-EN-06 6
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.
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.
P2HZ X3
Operating Manual P2HZ X3
19484-EN-06 7
Unit features
}Positive-guided relay outputs:
– 2 safety contacts (N/O), instantaneous
– 1 auxiliary contact (N/C), instantaneous
}Connection options for:
– 2 control elements (pushbuttons)
}LED display for:
– Supply voltage
– Switch status of the safety contacts
Safety features
The two-hand control relay meets the following safety requirements:
}The circuit is redundant with built-in self-monitoring.
}The safety function remains effective in the case of a component failure.
}The circuit prevents a further press stroke in the case of:
– Relay failure
– Contact welding
– Coil defect on a relay
– Open circuit
– Short circuit
Block diagram/terminal configuration
*Insulation between the non-marked area and the relay contacts: Basic insulation (over-
voltage category III), Protective separation (overvoltage category II)
P2HZ X3
Operating Manual P2HZ X3
19484-EN-06 8
Function Description
The two-hand control relay P2HZ X3 is activated by simultaneously operating the two oper-
ator elements (simultaneity see Technical details [ 15]). If one or both of the operator
elements are released, it interrupts the control command to close the press. The device is
ready for operation when the supply voltage is applied and the feedback loop Y1-Y2 is
closed. The "POWER" LED lights up.
}Both operator elements are operated within the simultaneity:
– The safety contacts 13-14 and 23-24 are closed, the auxiliary contact 31-32 opens,
the device is active.
– LEDs "CH1" and "CH2" will light.
}One operator element is released following simultaneous operation:
– Safety contacts 13-14 and 23-24 are opened redundantly, auxiliary contact 31-32 is
closed.
– The LED "CH1" or "CH2" goes out.
}To activate the device again, both operator elements have to be released and then op-
erated again within the simultaneity.
Operating modes
}Dual-channel operation with detection of shorts across contacts: Redundant input cir-
cuit, P2HZ X3 detects
– earth faults in the start and input circuit,
– short circuits in the input circuit,
– shorts across contacts in the input circuit.
Timing diagram
POWER
Feedback loop
Output safe
Button 1
t0t1t2t3t3t1
Button 2
Output aux.
t1
Legend
}POWER: Supply voltage
}Button 1/Button 2: Input circuits S11, S21
}Feedback loop: Feedback loop Y1-Y2
}Output safe: Safety outputs 13-14, 23-24
}Output aux: Auxiliary contacts 31-32
P2HZ X3
Operating Manual P2HZ X3
19484-EN-06 9
}t0: Recovery time after power on
}t1: Simultaneity, channel 1 and 2
}t2: Operating cycle ended through pushbutton 1 or 2
}t3: Y1-Y2 must be closed before the button is operated (recovery time)
Shaded area: State irrelevant
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).
}Fit the input terminal block of the control cabined with additional terminals for the supply
voltage.
WARNING!
Loss of the safety function due to too short distance of the operator
elements to the hazardous area!
The distance of the two-hand control relay to the nearest hazardous area
must be large enough so that if one of the operator elements is released,
the hazardous movement is interrupted before the operator reaches the
hazardous area or can reach into the hazardous area. You must maintain
the minimum distance in accordance with EN ISO 13855.
Depending on the application, serious injury or death may result.
Wiring
Please note:
}Information given in the "Technical details [ 15]" must be followed.
}Outputs 13-14, 23-24 are safety contacts, the output 31-32 is an auxiliary contact (e.g.
for display).
}Auxiliary contact 31-32 shouldnot be used for safety circuits!
}To prevent contact welding, a fuse should be connected before the output contacts (see
Technical details [ 15]).
}Calculation of the max. cable length lmax in the input circuit:
Rlmax
Rl / km
Imax =
Rlmax = max. overall cable resistance (see Technical details [ 15])
Rl/km = cable resistance/km
}Use copper wire that can withstand 60/75°C.
}The supply voltage must be switched off with the operating energy of the machine.
P2HZ X3
Operating Manual P2HZ X3
19484-EN-06 10
}The connection cables between the P2HZ X3 and the pushbuttons should not be laid
directly next to power cables, otherwise inductive and capacitive interference coupling
can result.
}On account of the low currents you should use gold-plated pushbutton contacts.
}Only contactors with positive-guided contacts should be used for safety functions.
}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.
}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.
}Ensure the wiring and EMC requirements of EN 60204-1 are met.
Preparing for operation
Supply voltage AC DC
A1
F1
A2
L+
L-
Input circuit Single-channel Dual-channel
Two-hand pushbuttons
with detection of shorts across
contacts
A2
S11
A1
S21
S1
S2
Feedback loop
without feedback loop monitor-
ing with feedback loop monitoring
Link or contacts from external
contactors
Legend
}S1/S2: Two-hand pushbuttons
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.
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