EUCHNER MSC User manual

EN
Operating Instructions
Installation and use
Modular Safety Control System MSC

Operating Instructions
Modular Safety Control System MSC
2(Translation of the original operating instructions) 2121331-04-04/19
Contents
1. About this document............................................................................................. 7
1.1. Scope............................................................................................................................................7
1.2. Target group ..................................................................................................................................7
1.3. Key to symbols...............................................................................................................................7
1.4. Supplementary documents ..............................................................................................................7
1.5. Exclusion of liability and warranty.....................................................................................................7
2. Introduction.......................................................................................................... 8
2.1. Contents of this manual...................................................................................................................8
2.2. Important safety precautions ...........................................................................................................8
2.3. Abbreviations and symbols ..............................................................................................................9
2.4. Applicable standards.......................................................................................................................9
3. Overview ............................................................................................................ 10
4. Layout of the product ......................................................................................... 12
5. Installation ......................................................................................................... 13
5.1. Mechanical fastening.....................................................................................................................13
5.2. Calculation of the safety distance for an item of ESPE connected to the MSC system ........................14
5.3. Electrical connections ...................................................................................................................14
5.3.1. Information in relation to connecting cables .......................................................................15
5.3.1.1. Base unit MSC-CB ...............................................................................................15
5.3.2. USB connection ...............................................................................................................16
5.3.3. MSC configuration memory (M-A1).....................................................................................16
5.3.3.1. MULTIPLE LOAD function......................................................................................16
5.3.3.2. RESTORE function...............................................................................................17
5.3.3.3. Module FI8FO2....................................................................................................17
5.3.3.4. Module FI8..........................................................................................................18
5.3.3.5. Module FM4........................................................................................................18
5.3.3.6. Module FI16........................................................................................................19
5.3.3.7. Module AC-FO4 ...................................................................................................20
5.3.3.8. Module AC-FO2 ...................................................................................................20
5.3.3.9. Modules SPM0 – SPM1 – SPM2 ...........................................................................21
5.3.4. Encoder connections with RJ45 plug connector (SPM1, SPM2)............................................21
5.3.4.1. Module AZ-FO4 ...................................................................................................23
5.3.4.2. Module AZ-FO4O8 ...............................................................................................23
5.3.4.3. Module O8..........................................................................................................24
5.3.4.4. Module O16........................................................................................................24
5.3.4.5. Module AH-FO4SO8.............................................................................................25
5.3.5. Example for the connection of the MSC system to the machine control ................................25
5.4. Check list after installation.............................................................................................................26
6. Flow chart .......................................................................................................... 27
7. Signals............................................................................................................... 28
7.1. Inputs ..........................................................................................................................................28
7.1.1. MASTER_ENABLE ............................................................................................................28
7.1.2. NODE_SEL ......................................................................................................................28

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7.1.3. Proximity switch input on speed monitoring modules SPM...................................................29
7.1.4. RESTART_FBK .................................................................................................................30
7.2. Outputs........................................................................................................................................31
7.2.1. OUT_STATUS...................................................................................................................31
7.2.2. OUT_TEST ......................................................................................................................31
7.2.3. OSSD (MSC-CB, FI8FO2)...................................................................................................31
7.2.4. OSSD (AC-FO2, AC-FO4) ...................................................................................................32
7.2.5. OSSD (AH-FO4SO8)..........................................................................................................33
7.2.6. Safety relays (AZ-FO4, AZ-FO4O8) .....................................................................................34
8. Technical data .................................................................................................... 35
8.1. General system settings................................................................................................................35
8.1.1. Safety-related parameters ................................................................................................35
8.1.2. General data....................................................................................................................35
8.1.3. Housing ..........................................................................................................................36
8.1.4. Module MSC-CB ...............................................................................................................36
8.1.5. Module FI8FO2 ................................................................................................................36
8.1.6. Modules FI8 – FI16 ..........................................................................................................36
8.1.7. Module FM4 ....................................................................................................................36
8.1.8. Modules AC-FO2 – AC-FO4................................................................................................37
8.1.9. Module AH-FO4SO8..........................................................................................................37
8.1.10. Modules SPM0 – SPM1 – SPM2........................................................................................38
8.1.11. Modules AZ-FO4 – AZ-FO4O8 ............................................................................................38
8.1.12. Modules O8 – O16...........................................................................................................38
8.2. Mechanical dimensions .................................................................................................................39
8.3. Signals ........................................................................................................................................40
8.3.1. Base unit MSC-CB (Figure 14) ..........................................................................................40
8.3.2. Module FI8FO2 (Figure 15) ...............................................................................................41
8.3.3. Module FI8 (Figure 16) .....................................................................................................42
8.3.4. Module FM4 (Figure 17) ...................................................................................................43
8.3.5. Module FI16 (Figure 18) ...................................................................................................44
8.3.6. Module AC-FO2 (Figure 19) ..............................................................................................45
8.3.7. Module AC-FO4 (Figure 20) ..............................................................................................46
8.3.8. Module AZ-FO4 (Figure 21) ...............................................................................................47
8.3.9. Module AZ-FO4F08 (Figure 22) .........................................................................................48
8.3.10. Module O8 (Figure 23) .....................................................................................................49
8.3.11. Module O16 (Figure 24) ...................................................................................................50
8.3.12. Modules SPM0, SPM1, SPM2 (Figure 25) ..........................................................................51
8.3.13. Module AH-FO4SO8 (Figure 26) ........................................................................................52
8.4. Fault diagnostics ..........................................................................................................................53
8.4.1. Base unit MSC-CB (Figure 27) ..........................................................................................53
8.4.2. Module FI8FO2 (Figure 28) ...............................................................................................54
8.4.3. Module FI8 (Figure 29) .....................................................................................................55
8.4.4. Module FM4 (Figure 30) ...................................................................................................56
8.4.5. Module FI16 (Figure 31) ...................................................................................................57
8.4.6. Modules AC-FO2/AC-FO4 (Figure 32) ................................................................................58
8.4.7. Module AZ-FO4 (Figure 33) ...............................................................................................59
8.4.8. Module AZ-FO4O8 (Figure 34) ..........................................................................................60
8.4.9. Module O8 (Figure 35) .....................................................................................................61
8.4.10. Module O16 (Figure 36) ...................................................................................................62
8.4.11. Modules SPM0, SPM1, SPM2 (Figure 37) ..........................................................................63
8.4.12. Module AH-FO4SO8 (Figure 38) ........................................................................................64
9. Software EUCHNER Safety Designer.................................................................... 65
9.1. Installing the software ...................................................................................................................65
9.1.1. PC hardware – requirements .............................................................................................65
9.1.2. PC software – requirements..............................................................................................65

Operating Instructions
Modular Safety Control System MSC
4(Translation of the original operating instructions) 2121331-04-04/19
9.1.3. EUCHNER Safety Designer is installed as follows................................................................65
9.1.4. General ...........................................................................................................................66
9.1.5. Default toolbar.................................................................................................................66
9.1.6. Menu bar.........................................................................................................................67
9.1.7. Creating a new project (configuring MSCB system) .............................................................68
9.1.7.1. Changing configuration (layout of the various modules) ..........................................69
9.1.7.2. Editing user parameters ......................................................................................69
9.1.8. Tool windows for ITEMS, OPERATOR, CONFIGURATION .......................................................69
9.1.9. Preparing the diagram......................................................................................................70
9.1.9.1. Using the right mouse button ...............................................................................71
9.1.10. Example for a project.......................................................................................................72
9.1.10.1. Project validation.................................................................................................73
9.1.10.2. Printing project report .........................................................................................74
9.1.10.3. Connecting to MSC .............................................................................................75
9.1.10.4. Sending the configuration to the MSC system........................................................75
9.1.10.5. Downloading a configuration file (project) from MSC-CB..........................................75
9.1.10.6. Configuration log.................................................................................................75
9.1.10.7. System layout.....................................................................................................76
9.1.10.8. Disconnecting the system....................................................................................76
9.1.10.9. Monitor (real-time I/O status – text form)...............................................................77
9.1.10.10. Monitor (real-time I/O status – text – graphic) ........................................................78
9.1.11. Password protection ........................................................................................................79
9.1.11.1. Password level 1.................................................................................................79
9.1.11.2. Password level 2.................................................................................................79
9.1.11.3. Password change................................................................................................79
9.1.12. Checking the system........................................................................................................80
9.2. Item-specific function blocks..........................................................................................................81
9.2.1. Output items....................................................................................................................81
9.2.1.1. Safety outputs (OSSD).........................................................................................81
9.2.1.2. Safety output (SINGLE_OSSD)..............................................................................82
9.2.1.3. Signal output (STATUS) ........................................................................................84
9.2.1.4. Fieldbus sensor (FIELDBUS PROBE) ......................................................................85
9.2.1.5. Relay [RELAY] .....................................................................................................85
9.2.1.6. Usage of the automatic start (A) or manual start (B) (category 2) ............................87
9.2.2. Input items ......................................................................................................................89
9.2.2.1. Emergency stop (E-STOP) ....................................................................................89
9.2.2.2. Interlock (INTERLOCK) .........................................................................................91
9.2.2.3. Single-channel interlock (SINGLE INTERLOCK)........................................................93
9.2.2.4. Guard locking monitoring (LOCK FEEDBACK) .........................................................94
9.2.2.5. Key-operated switch (KEY LOCK SWITCH)..............................................................95
9.2.2.6. Optoelectronic safety light grid or safety laser scanner (ESPE) ...............................97
9.2.2.7. Safety footswitch (FOOTSWITCH)..........................................................................99
9.2.2.8. Operating mode selection (MOD-SEL)..................................................................101
9.2.2.9. Light barrier (PHOTOCELL).................................................................................102
9.2.2.10. Two-hand control (TWO-HAND) ............................................................................104
9.2.2.11. NETWORK_IN....................................................................................................105
9.2.2.12. SENSOR...........................................................................................................106
9.2.2.13. Pressure sensitive mat (S-MAT)...........................................................................108
9.2.2.14. Switch (SWITCH) ...............................................................................................110
9.2.2.15. Enabling switch (ENABLING SWITCH) ..................................................................111
9.2.2.16. Table – Mode 1 (device with 2 NO + 1 NC)..........................................................112
9.2.2.17. Table – Mode 2 (device with 2 NO + 1 NC)..........................................................112
9.2.2.18. Testable safety device (TESTABLE SAFETY DEVICE) .............................................113
9.2.2.19. Semiconductor output (SOLID STATE DEVICE) .....................................................115
9.2.2.20. Fieldbus input (FIELDBUS INPUT) ........................................................................116
9.2.2.21. LL0 – LL1.........................................................................................................116
9.2.2.22. Comments........................................................................................................116
9.2.2.23. Title .................................................................................................................116
9.3. Function blocks for speed monitoring...........................................................................................117

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Operating Instructions
Modular Safety Control System MSC
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9.3.1. Speed monitoring (SPEED CONTROL) ..............................................................................118
9.3.2. Speed range monitoring (WINDOW SPEED CONTROL).......................................................121
9.3.3. Standstill monitoring (STAND STILL) ................................................................................123
9.3.4. Speed/standstill monitoring (STAND STILL AND SPEED CONTROL) ....................................125
9.4. Function blocks in the "OPERATOR" window...................................................................................128
9.4.1. Logical operators...........................................................................................................128
9.4.1.1. AND .................................................................................................................128
9.4.1.2. NAND...............................................................................................................128
9.4.1.3. NOT .................................................................................................................128
9.4.1.4. OR ...................................................................................................................129
9.4.1.5. NOR.................................................................................................................129
9.4.1.6. XOR .................................................................................................................129
9.4.1.7. XNOR ...............................................................................................................130
9.4.1.8. Logical macro...................................................................................................130
9.4.1.9. MULTIPLEXER ...................................................................................................131
9.4.2. Memory operators .........................................................................................................132
9.4.2.1. D FLIP FLOP (max. number = 16) .......................................................................132
9.4.2.2. T FLIP FLOP (max. number = 16)........................................................................132
9.4.2.3. SR FLIP FLOP (max. number = 16) .....................................................................132
9.4.2.4. Manual restart (USER RESTART MANUAL)
(max. number = 16, including other RESTART operators) ....................................133
9.4.2.5. Monitored restart (USER RESTART MONITORED)
(max. number = 16, including other RESTART operators) ....................................133
9.4.2.6. Macro manual restart (MACRO RESTART MANUAL)
(max. number = 16, including other RESTART operators) ....................................133
9.4.2.7. Macro monitored restart (MACRO RESTART MONITORED)
(max. number = 16, including other RESTART operators) ....................................134
9.4.3. Guard lock logic (GUARD LOCK) (max. number = 4)..........................................................135
9.4.3.1. GUARD LOCK....................................................................................................135
9.4.4. COUNTER operators ......................................................................................................137
9.4.4.1. Counter (COUNTER) (max. number = 16) ............................................................137
9.4.5. TIMER operators (max. number = 32)..............................................................................139
9.4.5.1. MONOSTABLE...................................................................................................139
9.4.5.2. MONOSTABLE_B...............................................................................................140
9.4.5.3. Passing make contact (PASSING MAKE CONTACT)...............................................141
9.4.5.4. Delay (DELAY) ...................................................................................................142
9.4.5.5. Delay line (DELAY LINE) .....................................................................................143
9.4.5.6. Clock generation (CLOCKING) ............................................................................144
9.4.6. The MUTING function......................................................................................................145
9.4.7. MUTING operators (max. number = 4) .............................................................................145
9.4.7.1. Simultaneous muting (MUTING "Con")..................................................................145
9.4.7.2. MUTING "L".......................................................................................................147
9.4.7.3. "Sequential" MUTING..........................................................................................148
9.4.7.4. MUTING "T".......................................................................................................150
9.4.7.5. MUTING OVERRIDE............................................................................................151
9.5. Other function blocks ..................................................................................................................153
9.5.1. Serial output (SERIAL OUTPUT) (max. number = 4) ...........................................................153
9.5.1.1. Network (NETWORK) (max. number = 1) .............................................................154
9.5.1.2. Reset (RESET)...................................................................................................158
9.5.1.3. Interpage In/Out................................................................................................158
9.5.2. Special applications .......................................................................................................159
9.5.2.1. Output delay with manual operating mode ...........................................................159
9.6. Simulator ...................................................................................................................................160
9.6.1. Schematic simulation .....................................................................................................161
9.6.2. Administration of the graphic simulation...........................................................................163
9.6.2.1. Application example for the graphic simulation ....................................................166
9.6.3. MSC error codes ...........................................................................................................168
9.6.4. Error log file ..................................................................................................................169

Operating Instructions
Modular Safety Control System MSC
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10. Ordering information and accessories............................................................... 170
11. Inspection and service ...................................................................................... 170
12. Service ............................................................................................................ 170
13. Declaration of conformity ................................................................................. 170

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Operating Instructions
Modular Safety Control System MSC
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1. About this document
1.1. Scope
These operating instructions are valid for the Modular Safety Control System MSC. These operating instructions and any
brief instructions enclosed form the complete user information for your device.
1.2. Target group
Design engineers and installation planners for safety devices on machines, as well as setup and servicing staff possessing
special expertise in handling safety components.
1.3. Key to symbols
Symbol/depiction Meaning
Printed document
Internet
www Document is available for download at www.euchner.de
DANGER
WARNING
CAUTION
Safety precautions
Danger of death or severe injuries
Warning about possible injuries
Caution slight injuries possible
NOTICE
Important!
Notice about possible device damage
Important information
Tip! Tip/useful information
1.4. Supplementary documents
The overall documentation for this device consists of the following documents:
Document title (document number) Contents
Operating Instructions Safety Relays and Control Systems MSC
(2121331) This document
Internet
www
Possibly brief instructions enclosed Item-specific information about deviations or additions
Internet
www
Important!
Always read all documents to gain a complete overview of safe installation, setup and use of the
device. The documents can be downloaded from www.euchner.de. For this purpose enter the doc.
no. in the search box.
1.5. Exclusion of liability and warranty
In case of failure to comply with the conditions for correct use stated above, or if the safety regulations are not followed,
or if any servicing is not performed as required, liability will be excluded and the warranty void.

Operating Instructions
Modular Safety Control System MSC
8(Translation of the original operating instructions) 2121331-04-04/19
2. Introduction
2.1. Contents of this manual
The usage of the programmable safety system MSC and the related extension modules ("SLAVES") is described in this manual.
It covers:
ÌSystem description
ÌInstallation procedure
ÌConnections
ÌSignals
ÌTroubleshooting
ÌUsage of the configuration software
2.2. Important safety precautions
WARNING
ÌMSC achieves the following safety levels: SIL 3, SILCL 3, PL e, cat. 4, type 4 as per the applicable
standards.
However the final SIL and PL safety categories for the application are dependent on the number of
safety components, their parameters and the connections made, as per the risk analysis.
ÌRead the section "Applicable standards" carefully.
ÌUndertake a comprehensive risk analysis to determine the corresponding safety level for the spe-
cific application based on the applicable standards.
ÌThe programming/configuration of the MSC system is the sole responsibility of the installer or the
user.
ÌThis programming/configuration must correspond to the application-specific risk analysis and all
applicable standards.
ÌAfter programming/configuration and installation of the MSC system and all related devices, a
complete application safety check must be undertaken (see section “Checking the system” on
page 80).
ÌAfter adding new safety components, the complete system must always be checked (see section
“Checking the system” on page 80).
ÌEUCHNER is not liable for these processes or for the related risks.
ÌTo ensure the correct usage of the modules connected to the MSC system within the stated appli-
cation, reference should be made to the operating instructions/manuals and the related product
and/or application standards.
ÌThe ambient temperature in the installation location for the system must match the operating tem-
perature parameters stated on the product label and in the specifications.
ÌIn the event of safety-related questions, if necessary contact the responsible safety authorities in
your country or the responsible specialist association.

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Modular Safety Control System MSC
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2.3. Abbreviations and symbols
Abbreviations and symbols
M-A1 Memory card for MSC-CB (accessory)
MSCB Proprietary bus for extension modules
EUCHNER
Safety Designer (SWSD) MSC configuration software for Windows
OSSD Output Signal Switching Device
MTTFDMean Time to Dangerous Failure
PL Performance Level (according to EN ISO 13849-1)
PFHDProbability of Dangerous Failure per Hour
SIL Safety Integrity Level (according to EN 61508)
SILCL Safety Integrity Level Claim Limit (according to EN 62061)
SW Software
2.4. Applicable standards
MSC complies with the following European directives:
Ì2006/42/EC "Machinery Directive"
Ì2014/30/EU "EMC Directive"
Ì2006/95/EC "Low Voltage Directive"
and corresponds to the following standards:
EN IEC 61131-2 Programmable controllers – Part 2: Equipment requirements and tests
EN ISO 13489-1 Safety of machinery. Safety related parts of control systems. General principles for design
EN IEC 61496-1 Safety of machinery. Electro-sensitive protective equipment. Part 1: General requirements and tests.
EN IEC 61508-1 Functional safety of electrical/electronic/programmable electronic safety-related systems: General requirements.
EN IEC 61508-2 Functional safety of electrical/electronic/programmable electronic safety-related systems: Requirements for electrical/electronic/programma-
ble electronic safety-related systems.
EN IEC 61508-3 Functional safety of electrical/electronic/programmable electronic safety-related systems: Software requirements
EN IEC 61784-3 Industrial communication networks: Functional safety fieldbuses
EN IEC 62061 Safety of machinery. Functional safety of safety-related electrical, electronic and programmable electronic control systems
Table 1: Applicable standards

Operating Instructions
Modular Safety Control System MSC
10 (Translation of the original operating instructions) 2121331-04-04/19
3. Overview
MSC is a modular safety system and comprises a base unit (MSC-CB), which can be configured using the graphic user
interface in EUCHNER Safety Designer and various extension modules that can be connected to MSC-CB via the proprietary
MSCB bus.
The base unit MSC-CB, which can also be used as a standalone device, has 8 safety inputs and 2 separate, programmable
dual-channel outputs.
Important!
ÌThe following extension modules are available: FI8FO2 with inputs and outputs, FI8, FM4, FI16,
SPM0,SPM1 and SPM2 only with inputs, AC-FO2 and AC-FO4 only with outputs, also O8, O16
and AH-FO4SO8 with monitoring outputs, as well as AZ-FO4 and AZ-FO4O8 with positively driv-
en safety relays. Extension modules for connection to the commonest industrial fieldbus systems
for diagnostics are also available: CE-PR (PROFIBUS), CE-CO (CanOpen), CE-DN (DeviceNet),
CE-EI (ETHERNET/IP), CE-EI2 (ETHERNET/IP-2PORT), CE-PN (Profinet), CE-EC (ETHERCAT), CE-
MR (Modbus RTU), CE-MT (Modbus/TCP).
MSC makes it possible to monitor the following safety sensors and command switches:
Optoelectronic sensors (safety light grids, scanners, safety light barriers), mechanical switches, safety mats, emergency
stop buttons, two-hand controls, which are all managed via one single, flexible device that can be expanded.
The system is only allowed to comprise a single base unit MSC-CB and a maximum of 14 electronic extension modules, of
which not more than four are allowed to be of the same type.
With 14 extension modules the system can have up to 128 inputs, 16 dual-channel safety outputs and 32 status outputs.
The modules AZ-FO4/AZ-FO4O8 have four 1-channel outputs. The greater the number of AZ-FO4/AZ-FO4O8 modules used,
the fewer dual-channel outputs are available.
The communication between the base unit (MASTER) and the extension modules (SLAVES) is via the MSCB 5-way bus (pro-
prietary bus from EUCHNER) on the rear side of every module.
In addition, 8 inputs and 16 outputs are available and can be controlled using sensors (via the fieldbus).
The number of inputs in the system can be increased using the MSC extension modules FI8, FI16 and FM4 such that more
external devices can be connected. FM4 also provides 8 outputs of type OUT_TEST.
With the extension modules AC-FO2 and AC-FO4, the MSC system has 2 or 4 OSSD pairs to control devices connected
downstream of the MSC system.
AH-FO4SO8 is a safety module with 4 single-channel high-current safety outputs and 4 associated inputs for external device
monitoring contacts (EDM). The module is also equipped with 8 programmable signal outputs.
FI8FO2 has 8 inputs and 2 OSSD outputs.
The extension modules in the CE series make it possible to connect the commonest industrial fieldbus systems for diagnos-
tics and data transmission. CE-EI, CE-EI2, CE-PN, CE-MT and CE-EC also have an Ethernet connection. CE-US makes
it possible to connect devices with a USB port.
CE-CI1, CE-CI2 are modules in the MSC family that make it possible to connect MSC-CB to extension modules further
away (<50 m). Two CE-CI modules are connected at the required distance using a screened cable (can be ordered from
EUCHNER or as per the table for the cable technical data).
The following can be monitored (up to PLe) using the extension modules for speed monitoring SPM0, SPM1 and SPM2:
ÌStandstill, overspeed, speed range
ÌMovement direction, rotary motion/ linear movement
Up to 4 speed limits can be defined for each logical output (axis).
Each module has two logical outputs that can be configured via EUCHNER Safety Designer. In this way up to two independent
axes can be monitored.

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The safety modules AZ-FO4 and AZ-FO4O8 have 4 separate safety relay outputs and the corresponding 4 inputs for the
external device monitoring contacts (EDM).
Two settings are available for the outputs (configuration via the software EUCHNER Safety Designer):
Ì2 pairs of connection contacts (2 normally open contacts per output with 2 corresponding feedback loop inputs).
Ì4 separate individual connection contacts (1 normally open contact per output with 1 corresponding feedback loop in-
put).
Only the modules AZ-FO4O8, AH-FO4SO8 and O8 have 8 programmable signal outputs and the module O16 has 16
programmable signal outputs.
Using the software EUCHNER Safety Designer, complex logic can be configured using logical operators and safety functions
such as muting, timers, counters etc. defined.
All this is achieved using a straightforward, intuitive graphic user interface.
The configuration undertaken on the PC is transferred to the MSC-CB via a USB connection. The file is saved in the MSC-CB
and can also be saved on the proprietary M-A1 memory card (accessory). In this way it is possible to copy the configuration
to a different MSC-CB module quickly.
Important!
ÌThe MSC system is certified for the highest safety level included in the applicable industrial safety
standards (SIL 3, SILCL 3, PL e, cat. 4).

Operating Instructions
Modular Safety Control System MSC
12 (Translation of the original operating instructions) 2121331-04-04/19
4. Layout of the product
The scope of delivery of the MSC-CB includes:
ÌCD-ROM with the free-of-charge software EUCHNER Safety Designer, this multilingual manual (PDF format) and other
product literature
ÌMultilingual installation instructions
Important!
ÌThe MSCB plug connector on the rear and the M-A1 memory card can be ordered separately.
The scope of delivery of the extension modules includes:
ÌMultilingual installation instructions
ÌRear MSCB plug connector
Important!
ÌThe MSCB plug connector supplied and a further MSCB plug connector for the connection to the
MSC-CB are required to install an extension module. This can be ordered separately as an acces-
sory.

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Modular Safety Control System MSC
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5. Installation
5.1. Mechanical fastening
Fasten the modules of the MSC system to a 35-mm DIN rail as follows:
1. Connect together a number of rear 5-pin MSCB plug connectors to suit the number of modules to be installed.
2. Fasten the row of plug connectors assembled in this manner to the DIN rail (first hook on at the top).
3. Fasten modules to the rail and during this process place the contacts on the base of the module over the related plug
connector. Carefully push in module until it noticeably engages.
4. To remove the module, the catch on the rear of the module must be pulled down with the aid a screwdriver and the
module lifted and pull off upward.
1 2a
2b 3 4
Figure 1: Fastening modules of the MSC system to a 35-mm DIN rail

Operating Instructions
Modular Safety Control System MSC
14 (Translation of the original operating instructions) 2121331-04-04/19
5.2. Calculation of the safety distance for an item of ESPE connected to the MSC system
All electro-sensitive protective equipment that is connected to the MSC system must be arranged at a distance that is at
least the minimum safety distance Ssuch that the danger zone can only be reached after the machine's hazardous move-
ment has stopped.
WARNING
ÌThe European standard:
ISO 13855:2010- (EN 999:2008) Safety of machinery. Positioning of protective equipment with
respect to the approach speeds of parts of the human body* contains formulas for the calculation
of the correct safety distance.
ÌSpecific information in relation to the correct arrangement can be found in the installation instruc-
tions for each item of protective equipment.
ÌIt is to be noted that the total reaction time is dependent on:
Reaction time of MSC + reaction time of ESPE + reaction time of machine in seconds (i.e. the time
the machine requires to stop the hazardous movement from when the stop signal is sent).
* A procedure is described that permits system planners to determine the minimum safety distance between protective equipment, in particular ESPE
(e.g. light grids), safety mats or pressure-sensitive floors and two-hand controls, and a specific danger zone. It contains a rule for the arrangement
of protective equipment based on the approach speed and time taken by the machine to stop, where corresponding extrapolation is possible, such
that interlocking devices without guard locking are also included.
5.3. Electrical connections
Figure 2: MSC terminal blocks
The modules of the MSC system are equipped with terminal blocks for the
electrical connections. Each module can have 8, 16 or 24 terminals.
Each module also has an MSCB plug connector on the rear (for the commu-
nication with the base unit and the other extension modules).
Important!
Tightening torque for terminals: 0.6–0.7 Nm
WARNING
ÌInstall safety modules in a housing that meets degree of protection IP54 as a minimum.
ÌConnect module in electrically isolated state.
ÌThe power supply for the modules must be 24 VDC ± 20 % (PELV, as per EN 60204-1 (chapter
6.4)).
ÌMSC is not allowed to be used to supply external devices.
ÌThe same ground connection (0VDC) is to be used for all system components.

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Operating Instructions
Modular Safety Control System MSC
EN
5.3.1. Information in relation to connecting cables
NOTICE
ÌConnection cross-section range: AWG 12–30, (single conductor/multiple conductor) (UL).
ÌOnly use copper wires (Cu) for 60/75 °C.
ÌIt is recommended to use separate power supplies for the safety module and for other electrically
powered devices (electric motors, inverters, frequency converters) or other sources of interfer-
ence.
ÌCables for connections with a length of more than 50 m must have a cross-section of at least
1mm2(AWG16).
5.3.1.1. Base unit MSC-CB
The connections for each module in the MSC system are listed in the table below:
TERMINAL SIGNAL TYPE DESCRIPTION VERSION
1 24 VDC - Power supply 24 VDC -
2 MASTER_ENABLE1 Input Base unit enable 1 Input ("type B" as per EN 61131-2)
3 MASTER_ENABLE2 Input Base unit enable 2 Input ("type B" as per EN 61131-2)
4 GND - Power supply 0 VDC -
5 OSSD1_A Output Safety output 1 PNP active high
6 OSSD1_B Output PNP active high
7 RESTART_FBK1 Input Feedback loop/restart 1 Input as per EN 61131-2
8 OUT_STATUS1 Output Programmable digital output PNP active high
9 OSSD2_A Output Safety output 2 PNP active high
10 OSSD2_B Output PNP active high
11 RESTART_FBK2 Input Feedback loop/restart 2 Input as per EN 61131-2
12 OUT_STATUS2 Output Programmable digital output PNP active high
13 OUT_TEST1 Output Output for short circuit detection PNP active high
14 OUT_TEST2 Output Output for short circuit detection PNP active high
15 OUT_TEST3 Output Output for short circuit detection PNP active high
16 OUT_TEST4 Output Output for short circuit detection PNP active high
17 INPUT1 Input Digital input 1 Input as per EN 61131-2
18 INPUT2 Input Digital input 2 Input as per EN 61131-2
19 INPUT3 Input Digital input 3 Input as per EN 61131-2
20 INPUT4 Input Digital input 4 Input as per EN 61131-2
21 INPUT5 Input Digital input 5 Input as per EN 61131-2
22 INPUT6 Input Digital input 6 Input as per EN 61131-2
23 INPUT7 Input Digital input 7 Input as per EN 61131-2
24 INPUT8 Input Digital input 8 Input as per EN 61131-2
Table 2: Base unit MSC-CB

Operating Instructions
Modular Safety Control System MSC
16 (Translation of the original operating instructions) 2121331-04-04/19
5.3.2. USB connection
The MSC base unit MSC-CB has a USB 2.0 port for connection
to a PC on which the configuration software EUCHNER Safety
Designer (see figure) is installed.
A USB cable of appropriate size is available as an accessory.
Figure 3: Front USB-2.0 connection
5.3.3. MSC conguration memory (M-A1)
An optional backup memory card (called M-A1) can be
installed in the MSC base unit MSC-CB for backing up the
software configuration parameters.
Every new project transferred from the PC to the MSC-CB is
written to the memory card M-A1.
¨Always switch off MSC-CB before logging onto or logging
off from the M-A1.
Insert card in the slot on the rear of the MSC-CB (direction
as shown in Figure 4: M-A1).
M-A1 label
Label with technical data
Figure 4: M-A1
5.3.3.1. MULTIPLE LOAD function
To configure several MSC-CB modules without using a PC and the USB port, the required configuration can be saved on one
M-A1 memory card and then downloaded from there to the MSC-CB modules to be configured.
NOTICE
ÌIf the file on the memory card is not identical to the file in the MSC-CB, the configuration data in the
MSC-CB are overwritten and therefore permanently deleted.
WARNING: ALL THE DATA THAT WERE IN THE MSC-CB WILL BE LOST.

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Operating Instructions
Modular Safety Control System MSC
EN
5.3.3.2. RESTORE function
If the module MSC-CB is faulty, it can be replaced with a new module. As the entire configuration is saved on the M-A1 memory
card, it is only necessary to insert this card in the new module and switch on the MSC system, the backed up configuration
will then be loaded immediately. In this way interruptions in operation can be reduced to a minimum.
Important!
ÌThe LOAD and RESTORE functions can be deactivated using the software (see Figure 44: EUCH-
NER Safety Designer, selecting extension module on page 68).
ÌThe extension modules must be assigned addresses during installation so they can be used (see
NODE_SEL).
WARNING
ÌEach time M-A1 is used, it is to be carefully checked whether the configuration selected is the con-
figuration prepared for this specific system. Undertake a complete function check on the system
comprising the MSC and all devices connected to it (see section "CHECKING the system" Page
80).
5.3.3.3. Module FI8FO2
TERMINAL SIGNAL TYPE DESCRIPTION ACTION
1 24 VDC - Power supply 24 VDC -
2 NODE_SEL0 Input Node selection Input ("type B" as per EN 61131-2)
3 NODE_SEL1 Input Input ("type B" as per EN 61131-2)
4 GND - Power supply 0 VDC -
5 OSSD1_A Output Safety output 1 PNP active high
6 OSSD1_B Output PNP active high
7 RESTART_FBK1 Input Feedback loop/restart 1 Input as per EN 61131-2
8 OUT_STATUS1 Output Programmable digital output PNP active high
9 OSSD2_A Output Safety output 2 PNP active high
10 OSSD2_B Output PNP active high
11 RESTART_FBK2 Input Feedback loop/restart 2 Input as per EN 61131-2
12 OUT_STATUS2 Output Programmable digital output PNP active high
13 OUT_TEST1 Output Output for short circuit detection PNP active high
14 OUT_TEST2 Output Output for short circuit detection PNP active high
15 OUT_TEST3 Output Output for short circuit detection PNP active high
16 OUT_TEST4 Output Output for short circuit detection PNP active high
17 INPUT1 Input Digital input 1 Input as per EN 61131-2
18 INPUT2 Input Digital input 2 Input as per EN 61131-2
19 INPUT3 Input Digital input 3 Input as per EN 61131-2
20 INPUT4 Input Digital input 4 Input as per EN 61131-2
21 INPUT5 Input Digital input 5 Input as per EN 61131-2
22 INPUT6 Input Digital input 6 Input as per EN 61131-2
23 INPUT7 Input Digital input 7 Input as per EN 61131-2
24 INPUT8 Input Digital input 8 Input as per EN 61131-2
Table 3: Module FI8FO2

Operating Instructions
Modular Safety Control System MSC
18 (Translation of the original operating instructions) 2121331-04-04/19
5.3.3.4. Module FI8
TERMINAL SIGNAL TYPE DESCRIPTION VERSION
1 24 VDC - Power supply 24 VDC -
2 NODE_SEL0 Input Node selection Input ("type B" as per EN 61131-2)
3 NODE_SEL1 Input Input ("type B" as per EN 61131-2)
4 GND - Power supply 0 VDC -
5 INPUT1 Input Digital input 1 Input as per EN 61131-2
6 INPUT2 Input Digital input 2 Input as per EN 61131-2
7 INPUT3 Input Digital input 3 Input as per EN 61131-2
8 INPUT4 Input Digital input 4 Input as per EN 61131-2
9 OUT_TEST1 Output Output for short circuit detection PNP active high
10 OUT_TEST2 Output Output for short circuit detection PNP active high
11 OUT_TEST3 Output Output for short circuit detection PNP active high
12 OUT_TEST4 Output Output for short circuit detection PNP active high
13 INPUT5 Input Digital input 5 Input as per EN 61131-2
14 INPUT6 Input Digital input 6 Input as per EN 61131-2
15 INPUT7 Input Digital input 7 Input as per EN 61131-2
16 INPUT8 Input Digital input 8 Input as per EN 61131-2
Table 4: Module FI8
5.3.3.5. Module FM4
TERMINAL SIGNAL TYPE DESCRIPTION VERSION
1 24 VDC - Power supply 24 VDC -
2 NODE_SEL0 Input Node selection Input ("type B" as per EN 61131-2)
3 NODE_SEL1 Input Input ("type B" as per EN 61131-2)
4 GND - Power supply 0 VDC -
5 INPUT1 Input Digital input 1 Input as per EN 61131-2
6 INPUT2 Input Digital input 2 Input as per EN 61131-2
7 INPUT3 Input Digital input 3 Input as per EN 61131-2
8 INPUT4 Input Digital input 4 Input as per EN 61131-2
9 OUT_TEST1 Output Output for short circuit detection PNP active high
10 OUT_TEST2 Output Output for short circuit detection PNP active high
11 OUT_TEST3 Output Output for short circuit detection PNP active high
12 OUT_TEST4 Output Output for short circuit detection PNP active high
13 INPUT5 Input Digital input 5 Input as per EN 61131-2
14 INPUT6 Input Digital input 6 Input as per EN 61131-2
15 INPUT7 Input Digital input 7 Input as per EN 61131-2
16 INPUT8 Input Digital input 8 Input as per EN 61131-2
17 OUT_TEST5 Output Output for short circuit detection PNP active high
18 OUT_TEST6 Output Output for short circuit detection PNP active high
19 OUT_TEST7 Output Output for short circuit detection PNP active high
20 OUT_TEST8 Output Output for short circuit detection PNP active high
21 INPUT9 Input Digital input 9 Input as per EN 61131-2
22 INPUT10 Input Digital input 10 Input as per EN 61131-2
23 INPUT11 Input Digital input 11 Input as per EN 61131-2
24 INPUT12 Input Digital input 12 Input as per EN 61131-2
Table 5: Module FM4

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Operating Instructions
Modular Safety Control System MSC
EN
5.3.3.6. Module FI16
TERMINAL SIGNAL TYPE DESCRIPTION VERSION
1 24 VDC - Power supply 24 VDC -
2 NODE_SEL0 Input Node selection Input ("type B" as per EN 61131-2)
3 NODE_SEL1 Input Input ("type B" as per EN 61131-2)
4 GND - Power supply 0 VDC -
5 INPUT1 Input Digital input 1 Input as per EN 61131-2
6 INPUT2 Input Digital input 2 Input as per EN 61131-2
7 INPUT3 Input Digital input 3 Input as per EN 61131-2
8 INPUT4 Input Digital input 4 Input as per EN 61131-2
9 OUT_TEST1 Output Output for short circuit detection PNP active high
10 OUT_TEST2 Output Output for short circuit detection PNP active high
11 OUT_TEST3 Output Output for short circuit detection PNP active high
12 OUT_TEST4 Output Output for short circuit detection PNP active high
13 INPUT5 Input Digital input 5 Input as per EN 61131-2
14 INPUT6 Input Digital input 6 Input as per EN 61131-2
15 INPUT7 Input Digital input 7 Input as per EN 61131-2
16 INPUT8 Input Digital input 8 Input as per EN 61131-2
17 INPUT9 Output Digital input 9 Input as per EN 61131-2
18 INPUT10 Output Digital input 10 Input as per EN 61131-2
19 INPUT11 Output Digital input 11 Input as per EN 61131-2
20 INPUT12 Output Digital input 12 Input as per EN 61131-2
21 INPUT13 Input Digital input 13 Input as per EN 61131-2
22 INPUT14 Input Digital input 14 Input as per EN 61131-2
23 INPUT15 Input Digital input 15 Input as per EN 61131-2
24 INPUT16 Input Digital input 16 Input as per EN 61131-2
Table 6: Module FI16

Operating Instructions
Modular Safety Control System MSC
20 (Translation of the original operating instructions) 2121331-04-04/19
5.3.3.7. Module AC-FO4
TERMINAL SIGNAL TYPE DESCRIPTION VERSION
1 24 VDC - Power supply 24 VDC -
2 NODE_SEL0 Input Node selection Input ("type B" as per EN 61131-2)
3 NODE_SEL1 Input Input ("type B" as per EN 61131-2)
4 GND - Power supply 0 VDC -
5 OSSD1_A Output Safety output 1 PNP active high
6 OSSD1_B Output PNP active high
7 RESTART_FBK1 Input Feedback loop/restart 1 Input as per EN 61131-2
8 OUT_STATUS1 Output Programmable digital output PNP active high
9 OSSD2_A Output Safety output 2 PNP active high
10 OSSD2_B Output PNP active high
11 RESTART_FBK2 Input Feedback loop/restart 2 Input as per EN 61131-2
12 OUT_STATUS2 Output Programmable digital output PNP active high
13 24 VDC - Power supply 24 VDC 24 VDC outputs, power supply*
14 24 VDC -
15 GND - Power supply 0 VDC 0 VDC outputs*
16 GND -
17 OSSD4_A Output Safety output 4 PNP active high
18 OSSD4_B Output PNP active high
19 RESTART_FBK4 Input Feedback loop/restart 4 Input as per EN 61131-2
20 OUT_STATUS4 Output Programmable digital output PNP active high
21 OSSD3_A Output Safety output 3 PNP active high
22 OSSD3_B Output PNP active high
23 RESTART_FBK3 Input Feedback loop/restart 3 Input as per EN 61131-2
24 OUT_STATUS3 Output Programmable digital output PNP active high
Table 7: Module AC-FO4
5.3.3.8. Module AC-FO2
TERMINAL SIGNAL TYPE DESCRIPTION VERSION
1 24 VDC - Power supply 24 VDC -
2 NODE_SEL0 Input Node selection Input ("type B" as per EN 61131-2)
3 NODE_SEL1 Input Input ("type B" as per EN 61131-2)
4 GND - Power supply 0 VDC -
5 OSSD1_A Output Safety output 1 PNP active high
6 OSSD1_B Output PNP active high
7 RESTART_FBK1 Input Feedback loop/restart 1 Input as per EN 61131-2
8 OUT_STATUS1 Output State of the outputs 1A/1B PNP active high
9 OSSD2_A Output Safety output 2 PNP active high
10 OSSD2_B Output PNP active high
11 RESTART_FBK2 Input Feedback loop/restart 2 Input as per EN 61131-2
12 OUT_STATUS2 Output State of the outputs 2A/2B PNP active high
13 24 VDC - Power supply 24 VDC 24 VDC output, power supply*
14 n.c. - - -
15 GND - Power supply 0 VDC 0 VDC output*
16 n.c. - - -
Table 8: Module AC-FO2
* This terminal must be connected to the power supply so that the module functions correctly.