Pilz PMUT X1P User manual

PMUT X1P
Operating Manual-20587-EN-06
}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 PMUT X1P
20587-EN-06 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
Timing diagram 10
Operating modes 11
Muting 11
Reset input 13
Additional inputs for light guard or safety contacts 13
Muting lamps 13
Installation 14
Wiring 14
Preparing for operation 16
Application example 18
Operation 18
Status indicators 19
Fault indicators 19
Faults – Interference 20
Dimensions in mm 20
Technical details 21
Safety characteristic data 26
Supplementary data 26
Service life graph 27

Contents
Operating Manual PMUT X1P
20587-EN-06 4
Order reference 27
EC declaration of conformity 27

PMUT X1P
Operating Manual PMUT X1P
20587-EN-06 5
Introduction
Validity of documentation
This documentation is valid for the product PMUT 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 PMUT X1P
20587-EN-06 6
INFORMATION
This gives advice on applications and provides information on special fea-
tures.
Safety
Intended use
The muting controller meets the requirements of EN60204-1 and IEC0113-1.
It may be used in safety circuits for the temporary suspension of safety functions (muting) in
accordance with EN 61496-1.
The muting controller may only be used with a type 4 light guard.
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 [ 21]).
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 PMUT X1P
20587-EN-06 7
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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Operating Manual PMUT X1P
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Unit features
}Positive-guided relay outputs:
– 3 safety contacts (N/O), instantaneous
– 1 auxiliary contact (N/C), instantaneous
}4 inputs for muting sensors
}1 ESPE input for light grids (2-channel, contact or semiconductor outputs)
}1 input for additional safety light grid (2-channel, contact outputs) or safety contacts
}Connection option for 2 muting lamps
}Connection options for:
– Start button
– Key switch
– Feedback loop
}5 semiconductor outputs
}Monitors muting lamps
}Muting mode: sequential or parallel
}LED display for:
– Switch status channel 1/2
– Muting sensors
– Light grid
– Simultaneity requirement
– Muting lamp error
}Semiconductor outputs signal:
– Switch state of the safety contacts
– Muting active
– One of the muting lamps defective
– Both muting lamps defective
– Light grid (ESPE) active
}Plug-in connection terminals (either spring-loaded terminal or screw terminal)
}See order reference for unit types
Safety features
The safety 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 correct opening and closing of the safety function relays is tested automatically in
each on-off cycle.

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Block diagram/terminal configuration
Blockschaltbild
*Insulation between the non-marked area and the relay contacts: Basic insulation (over-
voltage category III), Protective separation (overvoltage category II)
Function description
The muting controller PMUT X1P is used for the temporary suspension of safety functions.
This allows objects to be transported into and out of a danger zone without adversely af-
fecting the safety function. When the supply voltage is applied the "POWER" LED will light.
The unit is ready for operation when the feedback loop Y1-Y2 and the input circuit (e.g. light
guard at S12 and S22 not interrupted) are closed. The muting sensors are not active.
}Start circuit S33-S34 is closed:
– Safety contacts 13-14/23-24/33-34 are closed, auxiliary contact 41-42 is open.
– Status indicators "Output", "OSSD CH.1" and "OSSD CH.2" are lit.
– A high signal is present at the semiconductor output Y32 (ESPE state).
– A high signal is present at the semiconductor output Y36 (switch state of safety con-
tacts)

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}Input circuit is opened (e.g. light guard at S12 and S22 interrupted):
– Safety contacts 13-14/23-24/33-34 are opened redundantly, auxiliary contact 41-42
is closed.
– Status indicators "Output", "OSSD CH.1" and "OSSD CH.2" go out.
– A low signal is present at the semiconductor output Y36 (switch state of safety con-
tacts).
– A low signal is present at semiconductor output Y32 (ESPE state).
Timing diagram
[1] [5] [4]
[2] [6][4]
[3] [3]
ESPE
Legend
}Power: Supply voltage
}Start: Start button
}ESPE: Light curtain
}MS1 ... MS4: Muting sensors
}ML: Muting lamps
}Output Safe: Safety contacts 13-14, 23-24, 33-34
}Output aux: Auxiliary contact 41-42
}[1]: Press start button
}[2]: Close safety contacts
}[3]: Muting on
}[4]: Light curtain interrupted
}[5]: Muting off
}[6]: Open safety contacts
}t1: Switch-on delay safety contacts
}t2: Minimum start pulse duration

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20587-EN-06 11
}t3: Max. switch-on delay muting
}t4: Recovery time after muting off
}t5: Delay-on de-energisation
Operating modes
}Dual-channel operation (contact or semiconductor outputs from ESPE) without detec-
tion of shorts across contacts
}Dual-channel operation (contact or semiconductor outputs from ESPE) with detection of
shorts across contacts: redundant input circuit, earth faults in the input circuit or shorts
across the input circuits are detected.
}Monitored manual start: The supply voltage must be present and the safety circuits
closed before the start contact is closed. The unit is not active until the start button has
been operated once the waiting period has expired (see technical details).
WARNING!
Muting start despite triggered safety function
When the Muting function is started even though the protected field of the
light guard, for example, is interrupted by a person, the machine/plant will
start up again and this may lead to serious injury and death.
Before you start the Muting function, the protected field has to be free and
the OSSD have to be in OFF state. The start has to be triggered manually
by the operator.
Muting
The muting controller can be used for parallel or sequential muting:
}Parallel muting with 2 muting sensors
Muting lamp
MS1
MS2
AOPD
AOPD
Danger zone

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}Parallel muting with 4 muting sensors
Muting lamp
MS1
MS2
Danger zone
AOPD
MS4
MS3
AOPD
}Sequential muting with 4 muting sensors
Muting lamp
MS1 MS2 MS3
Danger zone
AOPD
AOPD MS4
Muting sensors MS1 and MS2 must energise within 3 s (simultaneity). Muting starts when
both muting sensors are active. The inputs of light guards S11-S12, S21-S22 and S31-S32
are muted. Status indicators "S1+S2" (Muting active), "S1", "S2" "OSSD CH.1" and "OSSD
CH.2" are lit. A high signal is present at semiconductor output Y32 (muting active).
If the light guards are interrupted (inputs S12 and S22 not active), status indicators "OSSD
CH.1" and "OSSD CH.2" will go out. A low signal is present at semiconductor output Y32
(ESPE state). Muting sensors MS3 and MS4 must energise while MS1 and MS2 are still
active. Only then may MS1 and MS2 become inactive. The muting cycle will then continue.
Muting is ended when one muting sensor at most (MS3 or MS4) is active.

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MS1
max. 2 x delay on de-energisation
MS2
MS3
MS4
ML1
Muting
Legend:
MS1: Muting sensor 1
MS2: Muting sensor 2
MS3: Muting sensor 3
MS4: Muting sensor 4
ML1: Muting lamp 1
Reset input
If the simultaneity requirement of 3 s is exceeded, the unit will go to a fault condition. Once
the fault has been rectified, the simultaneity must be reset by operating the key switch at
S43-S44. The start button S33-34 must then be operated. The muting controller is ready for
operation.
Additional inputs for light guard or safety contacts
Additional safety contacts can be connected to the muting controller at S51-S52 and S61-
S62 (e.g. a dual-channel safety light guard with safe output contacts). These input circuits
can monitor the muted ESPE. However, these inputs do not have a muting function. If the
contacts connected at S51-S52 and S61-S62 are interrupted, safety contacts
13-14/23-24/33-34 are opened redundantly, auxiliary contact 41-42 is closed. Status indic-
ator "Output" goes out. A low signal is present at semiconductor output Y36.
Muting lamps
The muting controller PMUT X1P is designed for use with one or two muting lamps. As
soon as the inputs of the light guard are muted, the Muting lamp ML1 will light. The PMUT
X1P monitors the connected muting lamps during the muting cycle. If muting lamp ML1 is
defective (e.g. coiled filament broken or lamp switched off), then the PMUT X1P automatic-
ally switches to muting lamp ML2. A high signal is present at semiconductor output Y34
(muting lamp 1 defective). If muting lamp ML2 is defective or is not connected, a high signal

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Operating Manual PMUT X1P
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is present at semiconductor output Y35 (both muting lamps defective). The "ML Fault" LED
is lit. If the light guards (ESPE) are interrupted when the muting lamps are defective, then
safety contacts 13-14/23-24/33-34 are opened redundantly, auxiliary contact 41-42 is
closed. Status indicators "Output", "OSSD CH.1" and "OSSD CH.2" go out.
NOTICE
Only use muting lamps that switch themselves off if there is a defect.
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).
}When installing the light guards (muting sensors, ESPE), it is essential that the respect-
ive standards and regulations are observed. If you are using reflective light barriers
(parallel muting with 2 muting sensors), the light beams must cross within the danger
zone.
}The start button has to be installed in such a way that the operator can see into the
danger zone when operating the start button.
Wiring
Please note:
}Information given in the "Technical details [ 21]" 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!
}Semiconductor outputs should not be used for safety circuits!
}Delivery status: S51-S52/S61-S62/Y1-Y2/S31-S32 are linked
}To prevent contact welding, a fuse should be connected before the output contacts (see
Technical details [ 21]).
}Calculation of the max. cable length lmax in the input circuit:
Rlmax
Rl / km
Imax =
Rlmax = max. overall cable resistance (see Technical details [ 21])
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.

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}Mechanical and optoelectronic sensors (safety light beam devices, safety light grids)
are suitable for use.
}The safety contacts can be used to shut down the potentially hazardous movement.
}Only safe contact outputs (e.g. from safety light grids) may be used at S51-S52 and
S61-S62. Do not connect safety light grids with semiconductor outputs.
}The cables for connecting the muting sensors to terminals S1/S3 and S2/S4 must be
laid in separate sheathed cables!
}Only use muting lamps that have a luminous area of at least 1cm2 and a luminosity of at
least 200 cd/m2, in accordance with EN 61496-1.
}When connecting magnetically operated, reed proximity switches, ensure that the max.
peak inrush current (on the input circuit) does not overload the proximity switch.

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Preparing for operation
Supply voltage AC DC
A1
A2
L+
L-
Input circuit Semiconductor Contacts
Muting sensors
Light grid (ESPE)
Semiconductor output 2 x PNP
Detection of shorts across con-
tacts via light grid
Light grid (ESPE)
Semiconductor output PNP/NPN
Detection of shorts across con-
tacts;
- Semiconductor: via light grid
- Contacts: via PMUT X1P
Additional light grid, 2-channel, E-
STOP pushbutton

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NOTICE
Shorts across contacts must be detected in order to achieve PL e of EN ISO
13849-1. The independence of both ESPE channels is either monitored
through the light grid itself or through the muting controller.
INFORMATION
If you are only using 2 muting sensors, connect these to S1, S1+, S2- and
S2, S2+, S2-.
Muting lamp
LA+
LA-
LB-
LB+
Start circuit
S1: Key switch
S3: Start button
NOTICE
The path of the ESPE light beam must be clear when the PMUT X1P mut-
ing controller is started through operation of the start button. Only then is
the muting controller ready for operation.
Feedback loop
without feedback loop monitor-
ing with feedback loop monitoring
Link or contacts from external
contactors

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Semiconductor output
Y32: Light grid active
Y33: Muting active
Y34: Muting lamp warning
Y35: Both muting lamps defective
Y36: Safety contacts closed
Application example
13 23 33
14 24 34
A1
A2
S1+
S3+
S2+
S4+
S1
S3
S2
S4 S43 S44 Y1 S11 S12
S21LA+ LA-
LB+ LB- Y2
S33 S34 S32S31S22
PMUT X1P
OSSD1
OSSD2
S1
S3
S2
S4
+24 V DC
0 V
K5
K6
K5 K6
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

PMUT X1P
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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.
LEDs indicate the status and errors during operation:
LED on
LED off
Status indicators
POWER
Supply voltage is present.
S1
Muting sensor MS1 and/or MS3 active.
S2
Muting sensor MS2 and/or MS4 active.
S1+S2
Muting active.
OUTPUT
Safety contacts are closed and auxiliary contact is open.
CH.1
Light grid channel 1 active.
CH.2
Light grid channel 2 active.
Fault indicators
POWER
Short circuit or no supply voltage
ML FAULT
Diagnostics: Both muting lamps are defective.
}Remedy: Test and replace muting lamps.
S1+S2 S1, S2
Diagnostics: The simultaneity requirement ≤ 3 s has been exceeded.
}Remedy: Check the position of the muting sensors.

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Faults – Interference
}Failure of the supply voltage during the muting cycle or simultaneity time is exceeded:
Operation of the key switch resets the simultaneity requirement. The muting cycle is re-
started.
}High signal at semiconductor output Y34 (muting lamp 1 defective): Switching from
muting lamp ML1 to muting lamp ML2 during muting may cause the safety contacts to
latch. In this case it will no longer be possible to start the PMUT X1P simply by operat-
ing the key switch. Alternatively, follow the instructions below:
– Operate key switch and interrupt ESPE
or
– Operate additional safety contact at S51-S52 or S61-S62
or
– Disconnect the unit from the supply.
To guarantee the availability of the muting controller, change the defective muting lamp
ML1 as quickly as possible.
}Earth fault S43, S33, S34, Y1, Y2, S11,S12 to GND: the supply voltage fails and the
safety contacts open. Once the cause of the fault has been removed and supply
voltage is maintained, the unit will be ready for operation after approximately 5 s.
}Contact malfunctions: If the contacts have welded, reactivation will not be possible after
the input circuit has opened.
Dimensions in mm
* With spring-loaded terminals