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NX-SL3[][][]

Safety CPU Unit

NX-SL3[][][]

The simplest way to integrate safety into ultra-high-speed machine automation - Bring safety to your production site

Item list of NX-SL3[][][]

Related Contents

last update: March 1, 2024

Regulations and Standards

Safety CPU Units NX-SL3[][][]

Certification body Standards
TÜV Rheinland • EN ISO 13849-1
• EN ISO 13849-2
• IEC 61508 parts 1-7
• IEC/EN 61131-2
• IEC 61326-3-1
UL • NRAG (UL 508 and ANSI/ISA 12.12.01)
• NRAG7 (CSA C22.2 No. 142 and CSA C22.2 No. 213)
Shipbuilding Standards NK, LK

The NX-series Safety CPU 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
• Requirements for PLe (Performance Level e) and category 4 in EN ISO13849-1

The NX-series Safety CPU Units are also registered for RCM, EAC, and KC compliance.

General Specifications

Item Specification
Enclosure Mounted in a panel (open)
Grounding method Ground 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)
Atmosphere Must be free from corrosive gases.
Ambient storage temperature -25 to 70°C (with no condensation or icing)
Altitude 2,000 m max.
Pollution degree 2 or less.
Noise immunity Conforms to IEC 61131-2.
2 kV on power supply line (Conforms to IEC 61000-4-4.)
Insulation class Class III (SELV)
Overvoltage category II
EMC immunity level Zone B
Vibration resistance Conforms 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 resistance Conforms to IEC 60068-2-27.
147 m/s2, 3 times each in X, Y, and Z directions
Installation method DIN Track (IEC 60715 TH35-7.5/TH35-15)

Unit Specifications

Unit name Safety CPU Unit
Model NX-SL3300 NX-SL3500
Maximum number of
safety I/O points		 256 points 1024 points
Program capacity 512 KB 2048 KB
Number of safety I/O
connections		 32 128
Number of FSoE master
connections		 32 128
I/O refreshing method Free-Run refreshing
External connection
terminals		 None
Indicators 3243_sp_3_1 3243_sp_3_2
Dimensions 30 × 100 × 71 mm (W × H × D)
I/O power supply method Not supplied.
Current capacity of
I/O power supply terminals		 No I/O power supply terminals
NX Unit power consumption *1 • Connected to a CPU Unit *2
1.25 W max.
• Connected to a Communications Coupler Unit
0.90 W max.
Current consumption
from I/O power supply		 No consumption
Weight 75 g max.
Installation orientation and
restrictions		 Installation orientation:
• Connected to a CPU Unit *2
Possible in the upright installation orientation.
• Connected to a Communications Coupler Unit *3
Six possible orientations.
Restriction: None

*1 The cable length for the Units that supply power to the corresponding Unit must be up to 20 m.
*2 The NX102 CPU Unit and NX502 CPU Unit can be connected.
*3 The NX-SL3300 can be connected to the NX-ECC20[] EtherCAT Coupler Unit and NX-EIC202 EtherNet/IP Coupler Unit.
     The NX-SL3500 can be connected to the NX-ECC20[] EtherCAT Coupler Unit.

Combinations of CPU Unit, Communications Unit, and Software

The following table shows the NX-series CPU Unit, Communications Units, and Sysmac Studio editions that can be used with the NX-SL3[][][] Safety CPU Units.

CPU Unit and
Communications
Unit		 NJ/NX Series
CPU Unit *1		 Communications Unit
NX102 CPU Unit
NX502 CPU Unit		 EtherCAT Coupler Unit
NX-ECC20[]		 EtherNet/IP Coupler Unit
NX-EIC202		 Communication
Control Unit
NX-CSG320
Edition of Sysmac
Studio *2		 Standard Edition Standard Edition Standard Edition
Sysmac Studio Safety
Edition		 Standard Edition
Sysmac Studio Safety
Edition
NX-SL3300 YES YES YES No
NX-SL3500 YES YES No No

*1 The NX-SL3[][][] Safety CPU Unit cannot be connected directly to the NJ/NX1P/NX7 CPU Unit. The NX-ECC20[]
     EtherCAT Coupler Unit is required to connect a system using these CPU Units.
*2 Refer to Version Information for the possible combinations of versions of Units and Sysmac Studio. The NX-I/O Edition
     can be used for configuration of a stand-alone safety control system using the EtherNet/IP Coupler Unit and NX-SL3300
     Safety CPU Unit.

Version Information

The following table shows the possible combinations of versions of NX-series Safety Control Units, CPU Units, Communications Coupler Units, and Sysmac Studio. Available functions that are related to safety control vary depending on the versions of the units and Sysmac Studio. Refer to the NX-series Safety Control Unit User's Manual (Cat. No. Z930) for details.

NX-SL3[][][] version 1.1 can be connected to the following versions of the CPU Unit:
• NX102 CPU Unit version 1.30 or later and Sysmac Studio version 1.22 or higher
• NX502 CPU Unit version 1.60 or later and Sysmac Studio version 1.54 or higher

Combinations of versions

Safety Control Unit
model and version		 NX bus master:
NX102 CPU Unit		 NX bus master:
NX502 CPU Unit		 NX bus master:
EtherCAT Coupler Unit		 NX bus master:
EtherNet/IP
Coupler Unit
Model Unit
version		 NX102-
[][][][]		 Sysmac
Studio		 NX502-
[][][][]		 Sysmac
Studio		 Communi-
cations
Coupler
Unit
NX-
ECC20[]		 NJ/NX1P/
NX7
CPU Unit
*1		 Sysmac
Studio		 Communi-
cations
Coupler
Unit
NX-
EIC202		 Sysmac
Studio
NX-SL3300 Ver.1.0 Ver.1.30
or later		 Ver.1.22
or higher		 Ver.1.60
or later		 Ver.1.54
or higher		 Ver.1.1
or later		 Ver.1.06
or later		 Ver.1.07
or higher		 --- ---
Ver.1.1 Ver.1.10
or higher		 Ver.1.0
or later		 Ver.1.10
or higher
NX-SL3500 Ver.1.0 Ver.1.30
or later		 Ver.1.22
or higher		 Ver.1.60
or later		 Ver.1.54
or higher		 Ver.1.2
or later		 Ver.1.07
or later		 Ver.1.08
or higher		 --- ---
Ver.1.1 Ver.1.10
or higher		 ---
NX-SIH400 Ver.1.0 Ver.1.30
or later		 Ver.1.22
or higher		 Ver.1.60
or later		 Ver.1.54
or higher		 Ver.1.2
or later		 Ver.1.06
or later		 Ver.1.07
or higher		 --- ---
Ver.1.1 Ver.1.10
or higher		 Ver.1.0
or later		 Ver.1.10
or higher
NX-SID800 Ver.1.0 Ver.1.30
or later		 Ver.1.22
or higher		 Ver.1.60
or later		 Ver.1.54
or higher		 Ver.1.1
or later		 Ver.1.06
or later		 Ver.1.07
or higher		 Ver.1.0
or later		 Ver.1.10
or higher
NX-SOH200 Ver.1.0 Ver.1.30
or later		 Ver.1.22
or higher		 Ver.1.60
or later		 Ver.1.54
or higher		 Ver.1.1
or later		 Ver.1.06
or later		 Ver.1.07
or higher		 Ver.1.0
or later		 Ver.1.10
or higher
NX-SOD400 Ver.1.0 Ver.1.30
or later		 Ver.1.22
or higher		 Ver.1.60
or later		 Ver.1.54
or higher		 Ver.1.1
or later		 Ver.1.06
or later		 Ver.1.07
or higher		 Ver.1.0
or later		 Ver.1.10
or higher

*1 This is version information when the NJ/NX1P/NX7 CPU Unit is used as the EtherCAT master in the system. The Safety
     Control Unit cannot be connected directly to these CPU Units.

last update: March 1, 2024

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