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Omron - Safety CPU Unit, NX-SL

Omron - Safety CPU Unit, NX-SL

Brand: Omron
Model No: NX-SL
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The Safety CPU Unit controls up to 32 Safety I/O Units.

• EN ISO13849-1 (PLe/Safety Category4), IEC 61508 (SIL3) certified.

• One connection using Safety over EtherCAT (FSoE) * protocol enables flexible configuration by mixing the Safety Units with standard NX I/O.

• The Safety CPU Unit controls up to 128 Safety I/O Units.

• Hardware and safety circuits can be configured using the Sysmac Studio (Ver. 1.07)

• Compliant with IEC61131-3

• Safety programs can be standardized and reused efficiently by using POUs for design and operation.

* Safety over EtherCAT (FsoE): The open protocol Safety over EtherCAT (abbreviated with FSoE "FailSafe over EtherCAT") defines a safety related communication layer for EtherCAT. Safety over EtherCAT meets the requirements of IEC 61508 SIL 3 and enables the transfer of safe and standard information on the same communication system without limitations with regard to transfer speed and cycle time.

 

Safety CPU Unit

Unit 
type
AppearanceSpecificationUnit 
version
Model
Maximum number 
of safety I/O 
points
Program 
capacity
Number of 
safety master 
connections
I/O 
refreshing 
method
Safety 
CPU 
Unit
3243_lu_1_1256 points512 KB32Free-Run 
refreshing
Ver. 1.1NX-SL3300
3243_lu_1_21024 points2048 KB128Free-Run 
refreshing
Ver. 1.1NX-SL3500

 

Regulations and Standards

Certification bodyStandards
TÜV Rheinland *EN ISO 13849-1: 2008 + AC: 2009 
EN ISO 13849-2: 2012 
IEC 61508 parts 1-7: 2010 
EN 62061: 2005 
EN 61131-2: 2007 
EN ISO 13850: 2008 
EN 60204-1: 2006 + A1: 2009 + AC: 2010 
EN 61000-6-2: 2005 
EN 61000-6-4: 2007 
NFPA 79: 2012 
ANSI RIA 15.06-1999 
ANSI B11.19-2010 
UL1998 
IEC 61326-3-1: 2008
ULcULus: Listed (UL508) and ANSI/ISA 12.12.01

* Certification was received for applications in which OMRON FSoE devices are connected to each other.

The NX-series Safety Control Units allow you to build a safety control system that meets the following standards. 

  • Requirements for SIL 3 (Safety Integrity Level 3) in IEC 61508, EN 62061, Safety Standard for Safety Instrumented Systems (Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related Systems)
  • Requirements for PLe (Performance Level e) and for safety category 4 in EN ISO13849-1

The NX-series Safety Control Units are also registered for C-Tick and KC compliance.

 

General Specification

ItemSpecification
EnclosureMounted in a panel (open)
Grounding methodGround to 100 Ω or less.
Operating 
environment
Ambient operating 
temperature
0 to 55°C (The upper limit of the ambient operating temperature is 
restricted by the installation orientation.)
Ambient operating 
humidity
10% to 95% (with no condensation or icing)
AtmosphereMust be free from corrosive gases.
Ambient storage 
temperature
-25 to 70°C (with no condensation or icing)
Altitude2,000 m max.
Pollution degree2 or less: Conforms to JIS B3502 and IEC 61131-2.
Noise immunityConforms to IEC 61131-2. 
2 kV on power supply line (Conforms to IEC 61000-4-4.)
Insulation classClass III (SELV)
Overvoltage categoryCategory II: Conforms to JIS B3502 and IEC 61131-2.
EMC immunity levelZone B
Vibration resistanceConforms to IEC 60068-2-6. 
5 to 8.4 Hz with 3.5-mm amplitude, 8.4 to 150 Hz, acceleration of 9.8 m/s2
100 minutes each in X, Y, and Z directions (10 sweeps of 10 min each = 100 
min total)
Shock resistanceConforms to IEC 60068-2-27. 
147 m/s2, 3 times each in X, Y, and Z directions
Insulation resistance20 MΩ between isolated circuits (at 100 VDC)
Dielectric strength510 VAC for 1 min between isolated circuits, leakage current: 5 mA max.
Installation methodDIN Track (IEC 60715 TH35-7.5/TH35-15)
Applicable standardsIEC 61508: 2010 SIL 3, EN 62061: 2005 SIL CL3 
EN ISO 13849-1, 13849-2: 2008 PL e/Safety Category 4 
UL 1998 
cULus: Listed UL508, ANSI/ISA 12.12.01 
EN 61131-2, C-Tick, KC: KC Registration, NK, LR

 

Specifications of Individual Units

Safety CPU Unit NX-SL3300/SL3500

Unit nameSafety CPU Unit
ModelNX-SL3300NX-SL3500
Maximum number of safety I/O 
points
256 points1024 points
Program capacity512 KB2048 KB
Number of safety master 
connections
32128
I/O refreshing methodFree-Run refreshingFree-Run refreshing
External connection terminalsNoneNone
IndicatorsFS indicator, VALID indicator, DEBUG indicator, 
TS indicator, and RUN indicator

3243_sp_3_1

FS indicator, VALID indicator, DEBUG indicator, 
TS indicator, and RUN indicator

3243_sp_3_2

Dimensions30 × 100 × 71 mm (W × H × D)
I/O power supply methodNot supplied.
Current capacity of I/O power 
supply terminals
No I/O power supply terminals
NX Unit power consumption0.90 W max.
Current consumption from I/O 
power supply
No consumption
Weight75 g max.
Installation orientation and 
restrictions
Installation orientation: 6 possible orientations 
Restrictions: None

 

Version Information

The combinations that can be used of the unit versions of the Safety Control Units, NJ/NX-series CPU Units, and NX-series EtherCAT Coupler Unit, and the version of the Sysmac Studio

NX UnitCorresponding version *1
Model numberUnit 
version
EtherCAT 
Coupler Unit 
NX-ECC20[]
NJ/NX-series 
CPU Units *2
Sysmac 
Studio
ErherNet/IP 
Coupler Unit 
(NX-EIC202)
Sysmac 
Studio
NX-SL33001.01.1 or later1.06 or later1.07 or later------
1.11.10 or later1.0 or later1.10 or later
NX-SL35001.01.2 or later1.07 or later1.08 or later------
1.11.10 or later------

*1 Some Units do not have all of the versions given in the above table. 
If a Unit does not have the specified version, support is provided by the oldest available version after the specified version.
Refer to the user’s manuals for the specific Units for the relation between models and versions. 
*2 These Units cannot be mounted to Machine Automation Controllers with NX1P CPU Units. Mount and use an EtherCAT Coupler Unit instead.