Safety CPU Unit

NX-SL3[][][]

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

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 62061

• 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 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, (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 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/s
2, 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/s
2, 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
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 can be connected. The NX1P2 CPU Unit cannot 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
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.
Safety Control Unit
model and version
NX bus master:
CPU Unit
NX bus master:
EtherCAT Coupler Unit
NX bus master:
EtherNet/IP Coupler Unit
Model
Unit
version
NX102
CPU unit
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.1.1
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.1.2
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.1.2
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.1.1
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.1.1
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.1.1
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.