Factory Automation

MELSEC F Series

Standards and certifications (by product) Products

Ship class standards

For notes on using each series as a certified system, please refer to the technical news of each series.

  • ※DNV and GL merged to form DNV GL. However, if a vessel is certified under one of the DNV, GL, or DNV GL rules, it is recognized that the vessel is certified according to the DNV GL rules.
Abbreviation Certifying Body Series Certification number Classification Rule Expiration date Technical bulletin
ABS American Bureau of Shipping
 FX1S 16-YO1501983-PDA Programmable Logic Controller
  • 2021 Marine Vessel Rules: 1-1-4/7.7, l-1-A3 & A4, 4-9-3 (Cat III) and 4-9-9/13,
  • 2021 Mobile Offshore Units Rules: 1-1-4/9.7, l-1-A2 & A3 and 4-3-4/5,
  • 2021 High-Speed Craft: 1-1-4/11.9, l-1-A2 & A3, 4-7-8 (Cat III) and 4-7-9/15
 November 1, 2021 －
FX1N 16-YO1501987-PDA September 14, 2021 －
FX3S 21-2176885-PDA November 10, 2026
FX3G 21-2153268-PDA
  • 2021 Marine Vessel Rules: 1-1-4/7.7, 1-1-A3 & A4, 4-9-3 (Cat III) and 4-9-9/13,
  • 2021 Mobile Offshore Units Rules: 1-1-4/9.7, 1-1-A2 & A3 and 4-3-4/5,
  • 2021 High-Speed Craft: 1-1-4/11.9, 1-1-A2 & A3, 4-7-8 (Cat III) and 4-7-9/15
 August 26, 2026
FX2N 21-2176883-PDA
  • 2021Marine Vessel Rules: 1-1-4/7.7, l-1-A3 & A4, 4-9-3 (Cat III) and 4-9-9/13,
  • 2021 Mobile Offshore Units Rules: 1-1-4/9.7, l-1-A2 & A3 and 4-3-4/5,
  • 2021 High-Speed Craft: 1-1-4/11.9, l-1-A2 & A3, 4-7-8 (Cat III) and 4-7-9/15
 November 10, 2026 －
FX2NC 21-2129813-PDA Programmable Logic Controller I/O Modules
  • 2021 Marine Vessel Rules: 1-1-4/7.7, 1-1-A3 & A4, 4-9-3 (Cat III) and 4-9-9/3 and 13;
  • 2021 High-Speed Craft: 1-1-4/11.9, 1-1-A2 & A3, 4-7-8 (Cat III) and 4-7-9/15;
  • 2021 Mobile Offshore Units: 1-1-4/9.7, 1-1-A2 & A3 and 4-3-4/5;
 June 16, 2026 －
FX3U 22-2305112-PDA Programmable Logic Controller
  • 2021 Marine Vessel Rules: 1-1-4/7.7, 1-1-A3 & A4, 4-9-3 (Cat III) and 4-9-9/13,
  • 2021 Marine Vessel Rules: 1-1-4/7.7, 1-1-A3 & A4, 4-9-3 (Cat III) and 4-9-9/13,
  • 2021 High-Speed Craft: 1-1-4/11.9, 1-1-A2 & A3, 4-7-8 (Cat III) and 4-7-9/15
 January 12, 2027
FX3UC 20-2036599-PDA
  • 2020 Marine Vessel Rules 1-1-4/7.7, 1-1-A3 & A4, 4-9-3 (Cat III) and 4-9-9/3 and 13;
  • 2020 High-Speed Craft 1-1-4/11.9, 1-1-A2 & A3, 4-7-8 (Cat III) and 4-7-9/15,
  • 2020 Mobile Offshore Units 1-1-4/9.7, 1-1-A2 & A3 and 4-3-4/5;
 July 19, 2025
DNV GL※ DNV GL FX3S TAA000001K Programmable Electronic System
  • DNV rules for classification - Ships, offshore units, and high speed and light craft
 December 5, 2026
FX3G TAA000002S
  • DNV rules for classification - Ships, offshore units, and high speed and light craft
 June 30, 2024
FX3U TAA0000038
  • DNV rules for classification - Ships, offshore units, and high speed and light craft
 June 15, 2026
FX3UC TAA00002K1
  • DNV GL rules for classification - Ships, offshore units, and high speed and light craft
 December 9, 2024
FX2N
FX2NC		 TAA00000A0
  • DNV GL rules for classification - Ships, offshore units, and high speed and light craft
 December 31, 2023 －
FX0N
FX1S
FX1N		 TAA000001J December 31, 2024 －
LR Lloyd's Register of Shipping
 FX1S
FX1N		 01/10094(E5) Programmable Logic Controller MELSEC
  • Marine and offshore application for use in environmental categories ENV1 and ENV2 in the "General Power Distribution Zones" as defined in LR Type Approval System Test Specification No. 1-2002 where the Test Specification is satisfactry for the intended operation.
 December 16, 2021 －
FX3S LR2001429TA-03 Programmable Logic Controller FX3S Series
  • Marine and offshore applications for use in environmental categories ENV2 in the "General Power Distribution Zones" and "Bridge and Deck Zones" as defined in LR's Test Specification No.1, 2019 where the Test Specification is satisfactory for the intended operation.
 October 13, 2024
FX3G LR21381429TA Programmable Logic Controller
  • Marine and offshore applications for use in environmental categories ENV1 and ENV2 on the "Bridge and deck Zone" and in the "General Power Distribution Zones" as defined in LR Type Approval System Test Specification No.1-2002 where the Test Specification is satisfactory for the intended operation.
 June 12, 2026
FX2N 98-10011(E6)-04
  • Marine and offshore applications for use in environmental categories ENV2 as defined in LR Type Approval System Test Specification No.1-2002 where the Test Specification is satisfactory for the intended operation.
 August 4, 2023 －
FX2NC 06/20018(E4)
  • Marine, offshore and industrial applications for use in environmentalcategories ENV1 and ENV2 as defined in Lloyd's Register's TypeApproval System, Test Specification Number 1 - 2002.
 April 10, 2026 －
FX3U LR22135176TA-02 Programmable Logic Controller MELSEC
  • Marine and offshore application for use in environmental categories ENV1 and ENV2 in the "General Power Distribution Zones" and / or "Bridge and Deck Zone" as defined in LR Type Approval System Test Specification No.1-2002 where the Test Specification is satisfactory for the intended operation.
 March 22, 2022
FX3UC LR2166307TA Programmable Logic Controller
  • Marine, offshore and industrial applications for use in environmental categories ENV 1, ENV 2 as defined in Lloyd's Register's Type Approval System, Test Specification Number 1-2002.
 April 7, 2024
BV Bureau Veritas
 FX1S
FX1N		 15023/C0 BV Programmable Logic Control Units
  • Bureau Veritas Rules for the Classification of Steel Ships.
 October 28, 2020 －
FX3S 38322/C0 BV
  • Bureau Veritas Rules for the Classification of Steel Ships.
 February 10, 2026
FX3G 23689/C0 BV February 16, 2027
FX2N 08569/F0 BV
  • Bureau Veritas Rules for the Classification of Steel Ships.
 March 5, 2026 －
FX3U 19860_D1 BV April 26, 2023
FX3UC 22933/C0 BV December 9, 2025
RINA Registro Italiano Navale FX1S
FX1N		 ELE093920XG/001 Programmable logic controllers
  • Rules for the Classification of Ships - Part C - Machinery, Systems and fire protection - Ch.3, Sect.6, Tab.1.
 April 22, 2025 －
FX3S ELE352220XG/001 Programmable logic controller
  • Rules for the Classification of Ships - Part C - Machinery, Systems and fire protection - Ch.3; Sect.6; Tab.1.
 February 8, 2026
FX3G ELE032922XG March 31, 2027
FX2N ELE008821XG
  • Rules for the Classification of Ships - Part C - Machinery, Systems and fire protection - Ch.3, Sect.6, Tab.1.
 February 8, 2026 －
FX3U ELE148522XG/002
  • Rules for the Classification of Ships - Part C - Machinery, Systems and fire protection - Ch.3; Sect.6; Tab.1.
 September 24, 2022
FX3UC ELE352120XG
  • Rules for the Classification of Ships- Part C - Machinery, Systems and fire protection - Ch.3 ; Sect. 6, Tab.1
 February 8, 2026
NK Class NK
 FX1S
FX1N		 04A046 Programmable Controller
  • Chapter 1, Part 7 of "Guidance for the Approval and Type Approval of Materials and Equipment for Marine Use" and the relevant Society's Rules.
 December 5, 2020 －
FX3S 14A028 October 29, 2025 －
FX3G 38322/C0 BV June 23, 2026
FX2N 06A007 January 31, 2027 －
FX3U 08A040 October 14, 2024 －
KR Korean Register of Shipping FX1N TKY21652-AC003 Programmable Logic Controller
  • Pt.6, Ch.2, Art.301 of the Rules for Classification, Steel Ships.
 January 10, 2025 －
FX3S TKY21652-AC008 July 6, 2025 －
FX3G TKY21652-AC006 April 5, 2027
FX2N TKY21652-AC004 January 10, 2025 －
FX3U TKY21652-AC005 January 22, 2024

If you need certification documents, please contact your local sales office.