This document is a translation of the original document.
All rights to this documentation are reserved by Pilz GmbH & Co. KG. Copies may be made
for internal purposes.
Suggestions and comments for improving this documentation will be gratefully received.
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.
Page 3
Contents
Contents
ContentsPage
Chapter 1 Introduction
1.1Validity of documentation1-1
1.1.1Retaining the documentation1-1
1.2Overview of documentation1-2
1.3Definition of symbols1-3
Chapter 2 Overview
2.1Unit structure2-1
2.1.1Scope of delivery2-1
2.1.2Unit features2-1
2.2Front view2-2
Chapter 3 Safety
3.1Intended use3-1
3.2System requirements3-2
3.3Safety regulations3-3
3.3.1Use of qualified personnel3-3
3.3.2Warranty and liability3-3
3.3.3Disposal3-3
3.3.4For your safety3-4
Chapter 4 Function description
4.1Unit properties4-1
4.1.1Integrated protection mechanisms4-1
4.1.2Function description4-1
4.1.2.1Operation4-1
4.1.2.2Block diagram4-1
4.2Input device types4-2
4.2.1Incremental encoders4-2
4.2.1.1Requirements of the incremental encoders 4-2
1.3Definition of symbols1300Definition of symbols1-Einfhrung Zeichen
Information that is of particular importance can be 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 situations in which the unit(s) could be damaged
and also provides information on preventive measures that can
be taken.
INFORMATION
This gives advice on applications and provides information on
special features, as well as highlighting areas within the text that
are of special importance.
Scope of delivery2-Lieferumfang_Brck_774639_modul_BA
2.1.2Unit features
Unit features2-Gerätemerkmale_Verwendung
` Expansion modulePNOZ ms3p
` Jumper 774 639
Verwendung/Bildunterschrift_multi_Drehzahlwchter
Geraetemerkmale_Zusatz BA Einleitung
Gertemerkmale
Using the product PNOZ ms3p:
Speed monitor for connection to a base unit from the PNOZmulti modular safety system
The product has the following features:
` Monitoring of 2 independent axes
` Connection per axis
– 1 incremental encoder
` Measured variables:
– standstill
– Speed (8 values can be set)
– Direction of rotation
` Axis types, reset mode can be selected in the PNOZmulti Configura-
tor
` Status indicators for
– Supply voltage
– Incremental encoder
– Axis status, standstill and excess speed
– Fault on the system
` Incremental encoder connection technology:
RJ-45 female connector
` Function to deactivate speed monitoring
` Galvanic isolation between the connections X1, X12 and X22
` Max. 4 speed monitors can be connected to the base unit
The expansion module monitors standstill, speed and direction of rotation in accordance with EN ISO 13849-1 up to PL e and EN IEC 62061
up to SIL CL 3.
The expansion module may only be connected to a base unit from the
PNOZmulti modular safety system.
The modular safety system PNOZmulti is used for the safety-related interruption of safety circuits and is designed for use on:
` E-STOP equipment
` Safety circuits in accordance with VDE 0113 Part 1 and EN 60204-1
WARNING!
Users must take appropriate measures to detect or exclude
errors (e.g. slippage or broken shearpin) which cause the frequency of the encoder signal to no longer be proportional to the
monitored speed.
Appropriate measures are:
` Using the monitored encoder to also control the drive
` Mechanical solutions
WARNING!
Encoder errors are detected and signalled via a diagnostic bit.
This does does notbring the relevant axis to a safe condition.
To maintain safety (Category 3), the diagnostic bit (diagnostic bit
10) in the user program must be evaluated in such a way that a
shutdown occurs if the axis is in operation (see examples in
Chapter 9).
CAUTION!
If there are frequency differences between tracks A and B of the
incremental encoder, the track with the higher frequency will be
evaluated. Different directions of rotation will no longer be
detected. The outputs
Clockwise
and
Anti-clockwise
switch
to a safe condition. The safe condition is cleared again as soon
as the error is remedied. Hazards that can arise through an automatic restart must be excluded within the user program.
The products may only be assembled, installed, programmed, commissioned, operated, maintained and decommissioned by persons with
proven skills. Persons with proven skills are people who, because they
are:
` Qualified electrical engineers or
` Have received training from qualified electrical engineers
are suitably experienced to operate devices, systems, plant and machinery in accordance with the general standards and guidelines for
safety technology.
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 safety guidelines given in this descrip-
tion
` Have a good knowledge of the generic and specialist standards ap-
plicable to the specific application.
3.3.2Warranty and liability
Warranty and liability3-Sich Gewhrleistung
3.3.3Disposal
Disposal3-Si ch Entsorgung
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 compo-
nents on the PCB boards, soldering work etc.).
` In safety-related applications, please comply with the mission time t
M
in the safety-related characteristic data.
` When decommissioning, please comply with local regulations regard-
ing the disposal of electronic devices (e.g. Electrical and Electronic
Equipment Act).
The unit meets all necessary conditions for safe operation. However,
you should always ensure that the following safety requirements are
met:
` This operating manual only describes the basic functions of the unit.
Information on the advanced functions can be found in the online help
for the PNOZmulti Configurator and in the PNOZmulti technical catalogue. Only use these functions after you have read and understood
the documentation. All necessary documentation can be found on the
PNOZmulti Configurator CD.
` Do not open the housing or make any unauthorised modifications.
` Please make sure you shut down the supply voltage when performing
The speed monitor can independently monitor two axes for standstill,
speed and direction of rotation. The speed monitor signals the status of
the monitored values to the base unit. Depending on the implemented
safety circuit, the values may be transferred from the base unit to a relay
output on the safety system, for example. Incremental encoders may be
used to record the values.
4.1.2.2Block diagram
Block diagram4-Blockschaltbild
module
Interface
to previous
The configuration of the speed monitor is described in detail in the
PNOZmulti Configurator's online help.
Requirements of the incremental encoders4-Drehzahlwaechter_Inkrementalgebertypen_sin/cos_TTL_HTL
4.2.1.2Adapter for incremental encoders
Adapter for incremental encoders4-Drehzahlwaechter_Inkrementalgeber_Adapter
` Only incremental encoders with a differential output of the following
type are permitted
– Sin/Cos
– TTL (RS 422)
–HTL (24 V)
` Please note the values stated in the technical details
The adapter records the data between the incremental encoder and the
drive and makes it available to the speed monitor via the RJ-45 female
connector.
Pilz supplies complete adapters as well as ready-made cable with RJ45 female connectors, which can be used when making an individual
adapter. The range of products in this area is constantly being expanded. Please contact us about the range of adapters that is currently available.
` The safety system should be installed in a control cabinet with a pro-
tection type of at least IP54. Fit the safety system to a horizontal DIN
rail. The venting slots must face upward and downward. Other mounting positions could destroy the safety system.
` Use the notches on the back of the unit to attach it to a DIN rail. Con-
nect the safety system to the DIN rail in an upright position so that the
earthing springs on the safety system are pressed on to the DIN rail.
` The ambient temperature of the PNOZmulti units in the control cabi-
net must not exceed the figure stated in the technical details, otherwise air conditioning will be required.
` To comply with EMC requirements, the DIN rail must have a low im-
pedance connection to the control cabinet housing.
Montage_EMV ESD
CAUTION!
Damage due to electrostatic discharge!
Electrostatic discharge can damage components. Ensure
against discharge before touching the product, e.g. by touching
an earthed, conductive surface or by wearing an earthed armband.
66000CommissioningCommissioning6-6.1Gene ral wiring guideline s6100General wi ring guidelines6-Verdrahtung_multi_Drehzahlwaechter
The wiring is defined in the circuit diagram of the
PNOZmulti Configurator.
Details of the input type, axis type and reset mode, plus the values for
standstill, speed monitoring and direction of rotation are also defined in
the PNOZmulti Configurator.
Please note:
` Information given in the "Technical details" must be followed.
Verdrahtung
` Use copper wire that can withstand 75 °C.
CAUTION!
The configurable switch-off delay when overspeed is reached
increases the reaction time of the system comprising base unit
and speed monitor by the stated value (see technical details).
This must not delay the transfer to a safe condition by more than
the permitted time. The configuration of the switch-off delay
must be considered in the risk assessment as regards hazards,
reaction time and safety distance.
6.2Preparing for operation6200Preparing for operation6-
6.2.1Connecting the incremental encoder
Connecting the incremental encoder6-Drehzahlwaechter_Betriebsb_Inkremen
Follow the instructions below when connecting the incremental
encoder:
` The incremental encoder can be connected via an adapter (e.g. PNOZ
msi4p) or can be connected directly to the speed monitor.
` The incremental encoder on connector X12 monitors axis 1; the incre-
mental encoder on connector X22 monitors axis 2.
` Only use shielded cables for all connections
` Always connect 0 V on the incremental encoder and speed monitor.
` Position the terminating resistors on the signal lines as close as pos-
sible to the input on the speed monitor.
6.2.1.1Connect the signals from the incremental encoder to the speed monitor
Connect the signals from the incremental encoder to the speed monitor 6-Drehzahlwaechter_Betriebsb_Inkremen_5V-TTL_24V-HTL_BA
Encoder types: 1 Vss, 5 V-TTL
` Apply 5 VDC to incremental encoder only
` Do not terminate incremental encoder with Z
Incremental
encoder
0 V
5 V
/B
B
/A
A
Z
o
5
Z
o
8
7
4
2
=120 Ohm
0
Speed monitor
0 V
5 V DC
Fig. 6-1:Connection to incremental encoder type 1 Vss, 5 V-TTL
` Apply 24 VDC supply voltage to incremental encoder only
` Do not terminate incremental encoder with Z0 = 120 Ohm
Incremental
encoder
0 V
24 V
/B
B
/A
A
5
8
7
4
2
Speed monitor
Fig. 6-2:Connection to incremental encoder type 24 V-HTL
6.2.1.2Connect the incremental encoder to the speed monitor via an adapter
Connect the incremental encoder to the speed monitor via an adapter 6-Drehzahlwaechter_Betriebsb_Inkremen_ueber_Adapt_mit_24 V HTL_nur Inkremen an 5 V_BA
` The adapter (e.g. PNOZ msi6p) is connected between the incremental
encoder and the drive. The output on the adapter is connected to the
RJ-45 female connector on the speed monitor.
` The adapter can also be used without connecting to a drive. The sig-
nal lines can then be terminated directly at the adapter with Z
Ohm.
` If the signal lines in the drive are already terminated with Z
120 Ohm, the incremental encoder may no longer be terminated.
` The signals relevant for the speed monitor are utilised in parallel by
the adapter. The information stated in section 6.2.2.1 and in the
adapter operating manual must be observed when connecting the
supply voltage.
` Supply 5 VDC to incremental encoder only. 24 V-HTL signals may not
When the supply voltage is switched on, the PNOZmulti safety system
copies the configuration from the chip card.
The LEDs "POWER","DIAG", "FAULT", "IFAULT" and "OFAULT" light up
on the base unit.
The PNOZmulti safety system is ready for operation when the "POWER"
and "RUN" LEDs on the base unit and the "READY" LED on the
PNOZ ms3p are lit continuously.
Supply voltage UB DC
Via base unit5 V
Voltage tolerance-15 %/+20 %
Power consumption at U
Via base unit1.0 W
Residual ripple DC5 %
Status displayLED
Times
Configurable switch-off delay0 - 2,500 ms
Reaction time
f>100 Hz: configurable switch-off delay + switch-off delay
on base unit *
f<100 Hz: configurable switch-off delay + switch-off delay
on base unit *
Supply interruption before de-energisation 20 ms
Incremental encoder input
Number of inputs2
Input signal level0.5 - 30.0 Vss
Phase position for the differential signals A,/A and B,/B90° ±30°
Overload protection-30 - 30 V
Input resistance10.0 kOhm
Input's frequency range0 - 500 kHz
Configurable monitoring frequency
without hysteresis0,1 Hz - 500 kHz
with hysteresis0,2 Hz - 500 kHz
Connection type (incremental encoder)RJ-45-socket, 8pin
Environmental data
EMCEN 60947-5-1
Vibration to EN 60068-2-6
Frequency10 - 55 Hz
Amplitude0.35 mm
Climatic suitabilityEN 60068-2-78
Airgap creepage in accordance with EN 60664-1
Ambient temperature0 - 60 °C
Storage temperature-25 - 70 °C
Mechanical data
Protection type
Mounting (e.g. cabinet)IP54
HousingIP20
TerminalsIP20
DIN rail
Top hat rail35 x 7.5 EN 50022
Recess width27 mm
Housing material
HousingPPO UL 94 V0
FrontABS UL 94 V0
Torque setting with screw terminals0.25 Nm
99000Application examplesApplication examples9-9.1Exampl es without positio n control9100Exam ples without posi tion control9-Applikationsbe ispiel_ohne_Lagereg elung_PNOZms3_ein leitung_Bit10_BA
Evaluation of bit: "Unfeasible or single-channel signal from the
incremental encoder", without position control
Diagnosticbit 10: "Unfeasible or single-channel signal from the incremental encoder" must be evaluated in the user program during operation in such a way that a set bit leads to a safety-related error reaction
(shutdown).
9.1.1Example 1
Example 19-Applikationsbeispiel_ohne_Lageregelung_1_PNOZms3_sofort_absch_BA
Immediate shutdown as soon as diagnostic bit 10 is set.
The bit is evaluated as follows:
The connection point "Input Device OK" must be incorporated into the
application and evaluated in such a way that a shutdown occurs if the
connection point "Input Device OK"= 0.
Example 29-Applikationsbeispiel_ohne_Lageregelung_2_PNOZms3_verzögerte absch_BA
A set diagnostic bit 10 can be tolerated for a maximum of 4 hours (occurrence of second error). If no feasible signals above standstill frequency are measured within this time, a shutdown will occur.
In this case, the bit will be evaluated as follows:
9-2
Please note that the direction of rotation must be evaluated for this example!
9.2Example with position control 9200Exam ple with position control 9-Applikationsbeispiel_DZW_mit_Lageregelung_PNOZms3_4p_BA
Evaluation of bit: "Unfeasible or single-channel signal from the
incremental encoder", with position control
Diagnostic bit 10: "Unfeasible or single-channel signal from the incremental encoder" may be set during position control as a result of jitter
on the encoder.
The set bit can be tolerated, i.e. evaluated in the user program in such a
way that a shutdown will not occur if the following conditions are met:
` An additional position control signal must be provided from an exter-
nal control system (e.g. PLC) and
` The signal must have the following status conditions:
– Position control: Signal status = 1
– Operation: Signal status = 0
During operation, diagnostic bit 10 must be evaluated in the user program in such a way that a set bit leads to a safety-related error reaction
(shutdown).
Application example:
Position Control
PLC
PNOZmulti Base Unit
Enable
PNOZ
ms3p
ms4p
M
Drive Control
Depending on the operating mode, evaluation of diagnostic bit 10 can
be implemented in the user program as follows
An additional "Position Control" signal is incorporated. This signal indicates whether the relevant axis is in position control (signal status = 1)
or in operation (signal status = 0).
The time element with configured switch-off delay operates as a startup suppressor, as the bit: "Unfeasible or single-channel signal from the
incremental encoder" may still be present for 2 s after leaving standstill.
The connection point "Input Device OK" must be incorporated into the
application and evaluated in such a way that a shutdown occurs if the
connection point "Input Device OK"= 0.
of Pilz GmbH & Co. KG in some countries. We would point out that product features may vary from the details stated in this document, depending on the status at the time of publication and the scope
of the equipment. We accept no responsibility for the validity, accuracy and entirety of the text and graphics presented in this information. Please contact our Technical Support if you have any questions.
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