Reer MZERO Quick start guide

1 8541403 • 19/07/2021 • Rev.1
Installation, Use and Maintenance
STAND ALONE PROGRAMMABLE
SAFETY CONTROLLER
(Original instructions)

STAND ALONE PROGRAMMABLE SAFETY CONTROLLER
2 8541403 • 19/07/2021 • Rev.1
English
STAND ALONE PROGRAMMABLE
SAFETY CONTROLLER
TABLE OF CONTENTS
INTRODUCTION ............................................................................................................................................ 6
Contents of this handbook....................................................................................................................... 6
Important safety instructions.................................................................................................................. 6
Abbreviations and symbols ...................................................................................................................... 7
Applicable standards................................................................................................................................. 7
OVERVIEW...................................................................................................................................................... 8
Hardware description ........................................................................................................................... 8
Optional external relay units............................................................................................................... 8
Software description ............................................................................................................................ 8
PRODUCT COMPOSITION .......................................................................................................................... 8
INSTALLATION.............................................................................................................................................. 9
Mechanical fastening ................................................................................................................................ 9
Calculation of safety distance of an ESPE connected to MZERO...................................................... 9
Electrical connections .............................................................................................................................10
Instructions concerning connection cables.....................................................................................10
MZERO 16.4 PINOUT...........................................................................................................................11
USB input ..............................................................................................................................................12
Example of connection of MZERO to the machine control system............................................12
CHECKLIST AFTER INSTALLATION........................................................................................................ 13
OPERATING DIAGRAM.............................................................................................................................. 14
SIGNALS ........................................................................................................................................................ 15
INPUTS .......................................................................................................................................................15
RESTART_FBK.......................................................................................................................................15
Digital INPUTS......................................................................................................................................15
OUTPUTS...................................................................................................................................................16
OUT STATUS (SIL 1/PL c) ....................................................................................................................16
OUT TEST ..............................................................................................................................................16
OSSD SAFETY OUTPUTS .........................................................................................................................17
IMPORTANT NOTE CONCERNING OSSD SAFETY OUTPUTS ...................................................................... 17
OSSD ......................................................................................................................................................17
OSSD OUTPUTS CONFIGURATION...................................................................................................18
TECHNICAL FEATURES ............................................................................................................................. 19
MZERO GENERAL SYSTEM CHARACTERISTICS ..............................................................................19
Safety level parameters.......................................................................................................................................19
Enclosure parameters ..........................................................................................................................................19
Electric parameters...............................................................................................................................................19
Environmental parameters .................................................................................................................................20
MECHANICAL DIMENSIONS...................................................................................................................20
LED INDICATORS (Normal Operation) .................................................................................................21
LED INDICATORS (Diagnostic)............................................................................................................... 22
MZERO (Figure 11) ..............................................................................................................................22
MZERO SAFETY DESIGNER SOFTWARE ............................................................................................... 23
Installing the software............................................................................................................................23
PC HARDWARE requirements ...........................................................................................................23
PC SOFTWARE requirements ............................................................................................................23
Installation of MZD software.............................................................................................................23
Fundamentals.......................................................................................................................................24
Standard tool bar.................................................................................................................................25

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Textual tool bar....................................................................................................................................26
Create a new project (configure the MZERO system)...................................................................26
Change user parameters ....................................................................................................................26
OBJECTS - OPERATOR - CONFIGURATION tool bars ....................................................................27
Creating the diagram..........................................................................................................................28
USE OF MOUSE RIGHT BUTTON ........................................................................................................................28
Example of a project ...........................................................................................................................30
Project validation ..................................................................................................................................................30
Resources Allocation ............................................................................................................................................ 31
Project report.........................................................................................................................................................31
Connect to MZERO ............................................................................................................................................... 35
Sending the configuration to MZERO .............................................................................................................. 35
Download a configuration file (project) from MZERO................................................................................. 35
Configuration LOG ................................................................................................................................................ 36
Disconnecting System .......................................................................................................................................... 36
MONITOR (I/O status in real time - textual) ...................................................................................................37
MONITOR (I/O status in real time - textual - graphic) .................................................................................. 38
Password protection...........................................................................................................................39
Level 1 password ...................................................................................................................................................39
Level 2 password ...................................................................................................................................................39
Password Change .................................................................................................................................................. 39
TESTING the system............................................................................................................................40
OBJECT FUNCTION BLOCKS.................................................................................................................. 41
OUTPUT OBJECTS...............................................................................................................................41
OSSD (safety outputs)..........................................................................................................................................41
STATUS (SIL 1/PL c output) ................................................................................................................................. 42
INPUT OBJECTS ...................................................................................................................................43
E-STOP (emergency stop)....................................................................................................................................43
E-GATE (safety gate device)................................................................................................................................44
SINGLE E-GATE (safety gate device).................................................................................................................45
LOCK FEEDBACK ...................................................................................................................................................46
ENABLE (enable key) ............................................................................................................................................47
ESPE (optoelectronic safety light curtain / laser scanner).......................................................................... 48
FOOTSWITCH (safety pedal)...............................................................................................................................49
MOD-SEL (safety selector) .................................................................................................................................. 51
PHOTOCELL (safety photocell)..........................................................................................................................51
TWO-HAND (bimanual control) .........................................................................................................................52
NETWORK_IN .........................................................................................................................................................53
SENSOR.................................................................................................................................................................... 53
S-MAT (safety mat)................................................................................................................................................54
SWITCH ....................................................................................................................................................................55
ENABLING GRIP SWITCH...................................................................................................................................... 56
TESTABLE SAFETY DEVICE.................................................................................................................................. 57
SOLID STATE DEVICE............................................................................................................................................58
RESTART INPUT .....................................................................................................................................................59
LL0-LL1..................................................................................................................................................................... 59
COMMENTS.............................................................................................................................................................59
TITLE .........................................................................................................................................................................59
OPERATOR FUNCTION BLOCKS............................................................................................................60
LOGICAL OPERATORS ........................................................................................................................60
AND...........................................................................................................................................................................60

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NAND........................................................................................................................................................................60
NOT...........................................................................................................................................................................61
OR.............................................................................................................................................................................. 61
NOR...........................................................................................................................................................................61
XOR ...........................................................................................................................................................................62
XNOR ........................................................................................................................................................................62
LOGICAL MACRO................................................................................................................................................... 63
MULTIPLEXER.........................................................................................................................................................63
DIGITAL COMPARATOR .......................................................................................................................................64
MEMORY OPERATORS .......................................................................................................................66
D FLIP FLOP (max number = 16) ........................................................................................................................66
T FLIP FLOP (max number = 16)......................................................................................................................... 66
SR FLIP FLOP........................................................................................................................................................... 66
USER RESTART MANUAL (max number = 16)................................................................................................67
USER RESTART MONITORED (max number = 16) ......................................................................................... 68
MACRO RESTART MANUAL (max number = 16) ............................................................................................68
MACRO RESTART MONITORED (max number = 16)..................................................................................... 69
PRE-RESET (max number = 32 with other RESTART operators) ................................................................70
GUARD LOCK OPERATORS (max number = 4)................................................................................71
GUARD LOCK.......................................................................................................................................................... 71
COUNTER OPERATORS ......................................................................................................................83
COUNTER (max number = 16) ............................................................................................................................83
COUNTER COMPARATOR ...................................................................................................................................84
TIMER OPERATORS (max number = 32) ..........................................................................................85
MONOSTABLE........................................................................................................................................................85
MONOSTABLE_B ...................................................................................................................................................86
PASSING MAKE CONTACT...................................................................................................................................87
DELAY.......................................................................................................................................................................88
LONG DELAY...........................................................................................................................................................89
DELAY COMPARATOR ......................................................................................................................................... 90
DELAY LINE ............................................................................................................................................................. 90
CLOCKING ...............................................................................................................................................................92
MUTING FUNCTION.............................................................................................................................93
MUTING OPERATORS (max number = 4).........................................................................................93
"Concurrent" MUTING.......................................................................................................................................... 93
MUTING “L” .............................................................................................................................................................94
"Sequential" MUTING ...........................................................................................................................................95
MUTING “T”............................................................................................................................................................. 96
MUTING OVERRIDE (max number = 4).............................................................................................................97
MISCELLANEOUS FUNCTION BLOCKS.................................................................................................99
SERIAL OUTPUT (max number = 4) ...................................................................................................................99
NETWORK (max number = 1)............................................................................................................................100
Example of application in Category 2 according to ISO 13849-1: ...........................................................103
Logical block diagram of a safety function using the network................................................................104
Example of application in Category 4 according to ISO 13849-1: ...........................................................104
Logical block diagram of a safety function using the network................................................................105
RESET......................................................................................................................................................................105
OSSD EDM (max number = 32).........................................................................................................................105
INTERPAGE IN/OUT ............................................................................................................................................106
INTFBK_IN / INTFBK_OUT (max number = 8) ...............................................................................................107
TERMINATOR ........................................................................................ Errore. Il segnalibro non è definito.

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SPECIAL APPLICATIONS ...................................................................................................................108
Output delay with manual ................................................................................................................................108
SIMULATOR FEATURE.......................................................................................................................109
Schematic Simulation........................................................................................................................110
How to use graphic simulation........................................................................................................112
MZERO FAIL CODES ..........................................................................................................................115
ACCESSORIES AND SPARE PARTS.......................................................................................................116
WARRANTY................................................................................................................................................117
CE DECLARATION OF CONFORMITY ..................................................................................................118

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INTRODUCTION
Contents of this handbook
This handbook describes how to use the MZERO Stand Alone Programmable Safety
Controller; it includes:
•a description of the system
•method of installation
•connections
•signals
•troubleshooting
•use of the MZD configuration SW
Important safety instructions
This safety alert symbol indicates a potential personal safety hazard. Failure to comply with
instructions bearing this symbol could pose a very serious risk to personnel.
➔This symbol indicates an important instruction.
The MZERO is built to the following safety levels: SIL 3, SILCL 3, PL e, Cat. 4, Type 4 in
accordance with the applicable standards. However, the definitive SIL and PL of the
application will depend on the number of safety components, their parameters and the
connections that are made, as per the risk analysis.
Read the "Applicable Standards" section carefully.
Perform an in-depth risk analysis to determine the appropriate safety level for your specific
application, on the basis of all the applicable standards.
Programming/configuration of the MZERO is the sole responsibility of the installer or user.
The device must be programmed/configured in accordance with the application-specific risk
analysis and all the applicable standards.
Once you have programmed/configured and installed the MZERO and all the relative devices,
run a complete application safety test (see the "TESTING the system" section, page 40).
Always test the complete system whenever new safety components are added
(see the "TESTING the system" page 40).
ReeR is not responsible for these operations or any risks in connection therewith.
Reference should be made to the handbooks and the relative product and/or application
standards to ensure correct use of devices connected to the MZERO within the specific
application.
The ambient temperature in the place where the system is installed must be compatible with
the operating temperature parameters stated on the product label and in the specifications.
For all matters concerning safety, if necessary, contact your country's competent safety
authorities or the competent trade association.

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Abbreviations and symbols
MZD = MZERO Safety Designer: MZERO configuration SW running in Windows
LL0, LL1 = Logic Level 0, Logic Level 1
OSSD = Output Signal Switching Device: solid state safety output
MTTFd= Mean Time to Dangerous Failure
PL = Performance Level
PFHd= Probability of a dangerous failure per Hour
SIL = Safety Integrity Level
SILCL = Safety Integrity Level Claim Limit
SW = Software
Applicable standards
MZERO complies with the following European Directives:
•2006/42/EC "Machinery Directive"
•2014/30/EU "Electromagnetic Compatibility Directive"
•2014/35/EU "Low Voltage Directive"
and is built to the following standards:
CEI EN 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 61496-1
Safety of machinery: Electro-sensitive protective equipment. Part 1: General
requirements and tests.
EN 61508-1
Functional safety of electrical/electronic/programmable electronic safety-related
systems: General requirements.
EN 61508-2
Functional safety of electrical/electronic/programmable electronic safety-related
systems: Requirements for electrical/electronic/programmable electronic safety-
related systems.
EN 61508-3
Functional safety of electrical/electronic/programmable electronic safety-related
systems: Software requirements.
EN 61508-4
Functional safety of electrical/electronic programmable electronic safety related
systems: Definitions and abbreviations.
IEC 61784-3
Digital data communication for measurement and control: Functional safety
fieldbuses.
EN 62061
Safety of machinery. Functional safety of safety-related electrical, electronic and
programmable electronic control systems
EN 81-20
Safety rules for the construction and installation of lifts. Lifts for the transport of
persons and goods. Passenger and goods passenger lifts
EN 81-50
Safety rules for the construction and installation of lifts. Examinations and tests.
Design rules, calculations, examinations and tests of lift components
Table 1

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OVERVIEW
Hardware description
MZERO is a Stand Alone Programmable Safety Controller.
It can be configured using the MZD graphic interface and is equipped with:
➢16 Safety Inputs
➢4 independent programmable Restart/EDM Inputs
➢4 independent dual channel Safety Outputs (OSSD)
➢4 SIL 1/PL c - Status outputs
➢4 Test Outputs
MZERO is capable of monitoring the following safety sensors and commands:
➢optoelectronic sensors (safety light curtains, scanners, safety photocells)
➢mechanical switches
➢safety mats
➢emergency stops
➢two-hand controls
➢RFID safety sensors
Optional external relay units
The MR2, MR4 and MR8 expansion units provide MZERO with 2, 4
and 8 N.O. guided contact safety relay outputs, respectively, with the related external
relay feedback (N.C. contact).
➔Refer to the specific description of this units on the relative technical sheet.
Software description
MZD software is capable of creating complex logics, using logical operators and safety
functions such as muting, timer, counters, etc.
All this is performed through an easy and intuitive graphic interface.
The configuration performed on the PC is sent to the controller via USB connection; the
file resides in the MZERO memory.
➔MZERO is certified to the maximum safety level envisaged by the applicable industrial safety
standards (SIL 3, SILCL 3, PL e, Cat. 4).
PRODUCT COMPOSITION
MZERO is supplied with:
1) MZERO Stand Alone Programmable Safety Controller.
2) Multi-language installation sheet containing QR-code concerning:
a) Link to the ReeR safety website area containing this multi-language installation
manual.
b) Link to ReeR safety website area containing th MZD Intallation Software.

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INSTALLATION
Mechanical fastening
Fix the MZERO system unit to a 35mm DIN rail as follows:
1. Fasten the controller to the rail. Press the unit gently until you feel it snap into
place.
2. To remove the unit, use a screwdriver to pull down the locking latch on the back of
the unit; then lift the unit upwards and pull.
Figure 1
Calculation of safety distance of an ESPE connected to MZERO
Any Electro-sensitive Protective Equipment device connected to MZERO, must be positioned at a
distance equal to or greater than the minimum safety distance Sso that the dangerous point can
be reached only after stopping the dangerous movement of the machine.
The european standard:
- ISO 13855:2010- (EN 999:2008) “Safety of machinery - Positioning of safeguards with respect
to the approach speeds of parts of the human body.”
1
provides the elements to calculate the proper safety distance.
Carefully read the installation manual of each device for specific information on the correct
positioning.
Remember that the total response time depends on:
MZERO response time + ESPE response time + response time of the machine (i.e. the time
taken by the machine to stop the dangerous movement from the moment in which the stop
signal is transmitted).
1
"Describe the methods that designers can use to calculate the minimum safety distance from a specific dangerous point for the safety
devices, particularly Electro-sensitive devices (eg. light curtains), safety-mats or pressure sensitive floors and bimanual control. It
contains a rule to determine the placement of safety devices based on approach speed and the stopping time of the machine, which
can reasonably be extrapolated so that it also includes the interlocking guards without guard locking."

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Electrical connections
Figure 2
The MZERO controller is provided with
terminal blocks for the electrical
connections.
The unit provides 40 terminals.
➔Terminal tightening torque: 5...7lb-in
(0,6...0,7 Nm).
Install the safety controller in an enclosure with a protection class of at least IP54.
Connect the module when it is not powered.
The supply voltage to the units must be 24Vdc 20% (PELV, in compliance with the
standard EN 60204-1 (Chapter 6.4)).
Do not use the MZERO to supply external devices.
The same ground connection (0VDC) must be used for all system components.
Instructions concerning connection cables.
➔Wire size range: AWG 12...30, (solid/stranded) (UL).
➔Use 60/75°C copper (Cu) conductor only.
➔We recommend the use of separate power supplies for the safety controller and for other
electrical power equipment (electric motors, inverters, frequency converters) or other
sources of disturbance.
➔Cables used for connections longer than 50m must have a cross-section of at least 1mm2
(AWG16).

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MZERO 16.4 PINOUT
TERMINAL
SIGNAL
TYPE
DESCRIPTION
OPERATION
1
24VDC
-
24VDC power supply
-
2
24VDC
-
24VDC power supply
-
3
NC
-
-
-
4
0VDC
-
0VDC power supply
-
5
OSSD1_A
Output
Static output 1
PNP active high
6
OSSD1_B
Output
PNP active high
7
RESTART_FBK1
Input
Feedback/Restart 1
Input (type 2) according to EN 61131-2
8
OUT_STATUS1
Output
SIL 1/PL c output
PNP active high
9
OSSD2_A
Output
Static output 2
PNP active high
10
OSSD2_B
Output
PNP active high
11
RESTART_FBK2
Input
Feedback/Restart 2
Input (type 2) according to EN 61131-2
12
OUT_STATUS2
Output
SIL 1/PL c output
PNP active high
13
OSSD3_A
Output
Static output 1
PNP active high
14
OSSD3_B
Output
PNP active high
15
RESTART_FBK3
Input
Feedback/Restart 1
Input (type 2) according to EN 61131-2
16
OUT_STATUS3
Output
SIL 1/PL c output
PNP active high
17
OSSD4_A
Output
Static output 2
PNP active high
18
OSSD4_B
Output
PNP active high
19
RESTART_FBK4
Input
Feedback/Restart 2
Input (type 2) according to EN 61131-2
20
OUT_STATUS4
Output
SIL 1/PL c output
PNP active high
21
OUT_TEST1
Output
Short circuit detection output
PNP active high
22
OUT_TEST2
Output
Short circuit detection output
PNP active high
23
OUT_TEST3
Output
Short circuit detection output
PNP active high
24
OUT_TEST4
Output
Short circuit detection output
PNP active high
25
INPUT1
Input
Digital input 1
Input (type 3) according to EN 61131-2
26
INPUT2
Input
Digital input 2
Input (type 3) according to EN 61131-2
27
INPUT3
Input
Digital input 3
Input (type 3) according to EN 61131-2
28
INPUT4
Input
Digital input 4
Input (type 3) according to EN 61131-2
29
INPUT5
Input
Digital input 5
Input (type 3) according to EN 61131-2
30
INPUT6
Input
Digital input 6
Input (type 3) according to EN 61131-2
31
INPUT7
Input
Digital input 7
Input (type 3) according to EN 61131-2
32
INPUT8
Input
Digital input 8
Input (type 3) according to EN 61131-2
33
INPUT9
Input
Digital input 9
Input (type 3) according to EN 61131-2
34
INPUT10
Input
Digital input 10
Input (type 3) according to EN 61131-2
35
INPUT11
Input
Digital input 11
Input (type 3) according to EN 61131-2
36
INPUT12
Input
Digital input 12
Input (type 3) according to EN 61131-2
37
INPUT13
Input
Digital input 13
Input (type 3) according to EN 61131-2
38
INPUT14
Input
Digital input 14
Input (type 3) according to EN 61131-2
39
INPUT15
Input
Digital input 15
Input (type 3) according to EN 61131-2
40
INPUT16
Input
Digital input 16
Input (type 3) according to EN 61131-2
Table 2

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USB input
MZERO Stand Alone Programmable Safety Controller includes a mini USB 2.0 connector for
connection to a Personal Computer with MZD (MZERO Designer) configuration SW installed.
A USB cable of the correct size is available as an accessory (CSU).
Figure 3 - USB 2.0 front panel connector for PC
Example of connection of MZERO to the machine control system
Figure 4 - Example of connection

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CHECKLIST AFTER INSTALLATION
The MZERO unit is able to detect in real time the faults.
Anyway to have the system perfect operation perform the following checks at start up and at least
every one year:
OPERATION / CONTROL
COMPLETE
1. Operate a complete system TEST (see "TESTING the system")
❒
2. Verify that all the cables are correctly inserted and the terminal blocks well
screwed.
❒
3. Verify that all the leds (indicators) light on correctly.
❒
4. Verify the positioning of all the sensors connected to MZERO.
❒
5. Verify the correct fixing of MZERO to the Omega rail.
❒
6. Verify that all the external indicators (lamps) work properly.
❒
➔After installation, maintenance and after any eventual configuration change perform a
System TEST as described in the paragraph "TESTING the system".

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OPERATING DIAGRAM
Mechanical fastening
Electrical connections
between the MZERO and
external sensors
Designing the project
Validation
SW OK ?
NO
YES
Downloading the
project to MZERO
Configuration check
(including complete
system TEST)
on MZERO OK?
NO
YES
End of connection
via USB
System
startup
Connection
via USB with MZD

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SIGNALS
INPUTS
RESTART_FBK
The four RESTART_FBK (EN 61131-2, Type 2) signal inputs allow MZERO to verify an EDM (External
Device Monitoring) feedback signal (series of contacts) from the external contactors and to
monitor Manual/Automatic operation (RESTART function). (See the list of possible connections in
Table 3).
If the application requires it, the response time of the external contactors must be verified
by an additional device.
The RESTART command must be installed outside the danger area in a position where the
danger area and the entire work area concerned are clearly visible.
It must not be possible to reach the control from inside the danger area.
MODE OF
OPERATION
EDM
RESTART_FBK
AUTOMATIC
With K1_K2
control
Without
K1_K2 control
MANUAL
With K1_K2
control
Without
K1_K2 control
Table 3
➔RESTART_FBK inputs can also be used as Digital INPUTS (del manuale istruzioni scaricabile
dal sito web ReeR) when not used in Restart_Fbk mode.
Digital INPUTS
•MZERO provides 16 high active PNP digital inputs (terminals 25...40) that allow
connection to project hardware components. These inputs are designed according to
EN 61131-2 Type 3.
•In addition to the 16 digital inputs, MZERO can also use the 4 RESTART_FBK inputs
(terminals 7, 11, 15, 19) as individual digital inputs. These inputs do not have all the
possible configurations of the 16 digital inputs and can only use the RESTART INPUT
function block (see RESTART INPUT section on page 59).

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OUTPUTS
OUT STATUS (SIL 1/PL c)
The OUT STATUS signal is a Programmable SIL 1/PL c output that can indicate the
status of:
•An input.
•An output.
•A node of the logic diagram designed using the MZD.
OUT TEST
The OUT TEST signals must be used to monitor the presence of short-circuits or overloads on the
inputs (Figure 5).
➔The maximum number of controllable inputs for each output OUT TEST is 4 INPUTs (parallel
connection).
➔The maximum allowed length for OUT TEST signal connections is = 100m.
Figure 5

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OSSD SAFETY OUTPUTS
IMPORTANT NOTE CONCERNING OSSD SAFETY OUTPUTS
➔OSSD safety outputs are periodically tested against possible stucks to 0V or +24VDC or
against bad cabling (e.g. two OSSD outputs shorted together). The test method chosen to
perform this safety check is the “voltage dip” test: periodically (every 120 ms) and for a very
short time (< 120 µs) each OSSD output is forced to 0VDC and if the test results are not
consistent the system goes in fail and into a safe state.
Figure 6 –Voltage dip test
OSSD
MZERO is equipped with OSSD (static semiconductor safety outputs) dual channel.
These outputs are short circuit protected, cross circuit monitored and supply:
•In the ON condition: (Uv-1,2V)...Uv (Uv = 24VDC ± 20%)
•In the OFF condition: 0V...2V r.m.s.
The maximum load is 400mA@24V and corresponds to a minimum resistive load of 60.
The maximum capacitive load is 0.68 F. The maximum inductive load is 2 mH.
➔External devices cannot be connected to the outputs unless explicitly planned in the MZD
program configuration project.
Common cause failures between OSSD outputs must be excluded by observing an
appropriate cable installation (i.e. separate cable paths).
In conditions of active outputs the module provides on both outputs a voltage equal to 24V
referred to 0VDC.
The load must therefore be connected between the output terminals and 0VDC.
Figure 7 –OSSD correct wiring

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Figure 8 - Configuration with dual channel OSSD outputs (safety category SIL3/Pl e)
OSSD OUTPUTS CONFIGURATION
Each OSSD output can be configured as shown in Table 4:
Automatic
The output is activated according to le configurations set by the MZD SW only if the corresponding RESTART_FBK
input is conected to 24VDC.
Manual
The output is activated according to le configurations set by the MZD SW only if corresponding RESTART_FBK
input FOLLOWS A LOGIC TRANSITION OF 0-->1.
Monitored
The output is activated according to le configurations set by the MZD SW only if the corresponding RESTART_FBK
input FOLLOWS A LOGIC TRANSITION OF 0-->1-->0.
Table 4
t = 250ms
250ms < t1< 5s
t2 = 250ms
Figure 9
➔It is not allowed the connection of external devices to the outputs, except as expected in the
configuration performed with the MZD software.

STAND ALONE PROGRAMMABLE SAFETY CONTROLLER
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English
TECHNICAL FEATURES
MZERO GENERAL SYSTEM CHARACTERISTICS
Safety level parameters
Parameter
Value
Standard
PFHd
1,50E-8
EN 61508:2010
SIL
3
SFF
99,7%
HFT
1
Safety standard
Type B
SILCL
3
EN 62061:2005 / A2:2015
Type
4
EN 61496-1:2013
PL
E
EN ISO 13849-1:2015
EN 62061:2005 / A2:2015
Dcavg
98,9%
MTTFd (years)
160,81
Category
4
Device lifetime
20 years
Pollution degree
2
Enclosure parameters
Description
Electronic housing 40 pole, with locking latch mounting
Enclosure material
Polyamide
Enclosure protection class
IP 20
Terminal blocks protection class
IP 2X
Fastening
Quick coupling to rail according to EN 60715
Dimensions (h x l x d)
108 x 45 x 114.5
Electric parameters
Rated voltage
24VDC + 20% / PELV, Protective Class III;
UL: Supply from class 2 (LVLE)
Dissipated power
6W max
Response time
22…24 ms
Digital INPUTS (No./description)
16 / PNP active high according to EN 61131-2 (type 3)
INPUT FBK/RESTART (No./description)
4 / possible Automatic or Manual operation with RESTART button,
PNP active high according to EN 61131-2 (type 2)
Test OUTPUT (No./description)
4 / to check for short-circuits - overloads
SIL 1/PL c OUTPUTS (No./description)
4 / programmable - PNP active high
OSSD (No./description)
4 pairs / solid state safety outputs PNP active high
400mA@24VDC max
Interface type C class 3 (ZVEI CB24I)
Connection to PC
USB 2.0 (Hi Speed) - Max cable length: 3m
Connection cable cross-section
0,5…2,5 mm2 / AWG 12…30 (solid/stranded)
Max length of connections
100m

STAND ALONE PROGRAMMABLE SAFETY CONTROLLER
20 8541403 • 19/07/2021 • Rev.1
English
Environmental parameters
Operating temperature
-10…55°C
Max surrounding air temperature
55°C (UL)
Storage temperature
-20…85°C
Relative humidity
10%...95%
Max. altitude (above sea level)
2000 m
MECHANICAL DIMENSIONS
Figure 10
(All dimensions are expressed in mm)