SGC 421 https://deif-staging.jcdhotel.dk/products/sgc-421/ Single genset controller en Thu, 18 Jun 2026 05:30:18 GMT Active 3ae0f9cc-6b5f-476f-9238-5b4fcb2b1d96 The SGC 421 controller is designed for AMF (automatic mains failure) applications and offers electronic governing plus features such as advanced battery charge management and temperature monitoring.

]]> The SGC 421 controller contains all the functions you need to protect and control a genset, a genset breaker, and a mains breaker. It is capable of monitoring a site battery to reduce fuel consumption, and it can monitor shelter temperature and several engine and alternator parameters. You can start and stop gensets remotely, and the SGC 421 is suitable for a wide range of applications including AMF (automatic mains failure), site battery monitoring, engine drive, and island (off-grid) mode.

Electronic governing feature

The SGC 421 includes electronic governing for engines with mechanical fuel systems. With a rotary actuator as add-on for air/fuel charge control, you can use the SGC 421 for electronic governing of the engine within ISO 8528 class G3 limits.

Several measurement functions

The controller allows you to measure 1-phase, 2-phase, 3-phase, and split-phase voltage, frequency, load current, and power factor, engine safety parameters such as engine temperature, oil pressure, and fuel level, fuel theft protection, and the engine battery. In addition, it can measure site battery backup voltage and shelter temperature to reduce fuel consumption. It features CAN bus and Modbus communication plus nine configurable inputs, eight analogue inputs, and seven configurable digital outputs.

User-friendly display

You can configure parameters from a PC using the DEIF Smart Connect utility software, or from the unit’s user-friendly, full graphics LCD display. The backlit display can show values and alarms in several languages including English, Chinese, and Spanish.

Deep sleep extends battery life

The SGC 421 has a practical deep sleep function that extends the battery life by suspending normal controller functions when the genset is off.

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  • Auto, manual and remote start/stop modes with night restriction option
  • Island application and Automatic Mains Failure (AMF) application support
  • 17 inputs: 5 resistive, 2 analogue I/V, 1 differential, 9 digital inputs
  • 7 digital outputs
  • Modbus over RS-485 
  • Supports Auto mode (site battery monitoring, remote start/ stop, auto exercise and cyclic) and manual operation modes 
  • Magnetic Pickup Unit (MPU) interface for engine speed measurement 
  • Auto exercise mode (2 events) to start and stop the genset for a preconfigured time 
  • Monitors 1-phase/3-phase voltage, frequency, load current and power factor for generator 
  • Monitors engine safety parameters like lube oil pressure, engine temperature, fuel level and more 
  • Monitors telecom site battery backup level and shelter temperature to reduce engine running and fuel consumption at telecom tower sites 
  • CANbus for engine communication with support for Stage 5/ Tier 4 Final 
  • Built-in electronic governing function with the help of a rotary actuator
    • ]]>     CE DoC 4910290120 UK.pdf https://deif-cdn-umbraco.azureedge.net/media/nm0gcxqv/ce-doc-4910290120-uk.pdf?rnd=134127010853570000&v=9 5e613473-b415-4de6-8d82-e3788947f265 SGC_110 Mon, 12 Jan 2026 14:18:05 GMT 2026-01-12T14:18:05+00:00 2026-01-12T14:18:05+00:00 eng document D Approvals/Certifications UL CoC E339342-20220801 - UL Listed (2025-11) UK.pdf https://deif-cdn-umbraco.azureedge.net/media/jgbbkpmo/ul-coc-e339342-20220801-ul-listed-2025-11-uk.pdf?rnd=134126896749000000&v=9 3d158351-158e-42e1-881a-fe4318065246 SGC_110 Mon, 12 Jan 2026 11:07:54 GMT 2026-01-12T11:07:54+00:00 2026-01-12T11:07:54+00:00 eng document C Approvals/Certifications UL CoC E339342-20220801 - UL Recognized (2023-07) UK.pdf https://deif-cdn-umbraco.azureedge.net/media/1vlfhpjb/ul-coc-e339342-20220801-ul-recognized-2023-07-uk.pdf?rnd=134126841712700000&v=9 bd4357c5-7121-4251-bf42-69f1f9cb045c SGC_110 Mon, 12 Jan 2026 09:36:11 GMT 2026-01-12T09:36:11+00:00 2026-01-12T09:36:11+00:00 eng document B Archived Certificates General safety note 4189341189 UK-FR.pdf https://deif-cdn-umbraco.azureedge.net/media/t3ofzpjw/general-safety-note-4189341189-uk-fr.pdf?rnd=134045044194400000&v=9 bd5c5d87-9036-4df9-881e-cc1bd5ed3b40 MDR-2 Thu, 09 Oct 2025 17:26:59 GMT 2025-10-09T17:26:59+00:00 2025-10-09T17:26:59+00:00 eng document C Other Technical Documentation SGC 420 宣传册 4189341304 中文.pdf https://deif-cdn-umbraco.azureedge.net/media/tkgbpyku/sgc-420-宣传册-4189341304-中文.pdf?rnd=133845164660770000&v=9 e1078d82-7c54-4efe-a411-d496fc2dfc0e SGC_420 Thu, 20 Feb 2025 09:14:26 GMT 2025-02-20T09:14:26+00:00 2025-02-20T09:14:26+00:00 zho document D Brochures/Handouts UKCA DoC 4910290620 UK.pdf https://deif-cdn-umbraco.azureedge.net/media/kjlnwbom/ukca-doc-4910290620-uk.pdf?rnd=133743431517200000&v=9 05db564a-decc-47bc-b370-b9ac5949bb15 SGC_110 Fri, 25 Oct 2024 15:19:11 GMT 2024-10-25T15:19:11+00:00 2024-10-25T15:19:11+00:00 eng document C Approvals/Certifications Type certificate SGC1xx SGC4xx 4124030087.pdf https://deif-cdn-umbraco.azureedge.net/media/xdrdhcda/type-certificate-sgc1xx-sgc4xx-4124030087.pdf?rnd=133658510780230000&v=9 8823e3a0-5c60-4a74-9c84-9bd4535296df SGC_110 Fri, 19 Jul 2024 08:24:38 GMT 2024-07-19T08:24:38+00:00 2024-07-19T08:24:38+00:00 eng document B Approvals/Certifications DEIF Smart Connect 用户手册 4189341232 中文.pdf https://deif-cdn-umbraco.azureedge.net/media/tiuoqxfb/deif-smart-connect-用户手册-4189341232-中文.pdf?rnd=133578925404970000&v=9 5ce82882-06a1-4eaa-a43d-e74206cc4c38 SGC_110 Thu, 18 Apr 2024 05:42:20 GMT 2024-04-18T05:42:20+00:00 2024-04-18T05:42:20+00:00 zho document C User's Manual DEIF Smart Connect User manual 4189341232 UK.pdf https://deif-cdn-umbraco.azureedge.net/media/weodndfr/deif-smart-connect-user-manual-4189341232-uk.pdf?rnd=133578924154370000&v=9 8c361da9-8db1-490e-ae3b-18b5299899cd SGC_110 Thu, 18 Apr 2024 05:40:15 GMT 2024-04-18T05:40:15+00:00 2024-04-18T05:40:15+00:00 eng document D User's Manual SGC 420 SGC 421 Modbus tables 4189341358.xlsx https://deif-cdn-umbraco.azureedge.net/media/idtjrks1/sgc-420-sgc-421-modbus-tables-4189341358.xlsx?rnd=133578924056400000&v=9 aa88e758-635b-4315-b264-b28f05d216b2 SGC_421 Thu, 18 Apr 2024 05:40:05 GMT 2024-04-18T05:40:05+00:00 2024-04-18T05:40:05+00:00 eng document A Communication SGC 421 User manual 4189341355 UK.pdf https://deif-cdn-umbraco.azureedge.net/media/55xai45a/sgc-421-user-manual-4189341355-uk.pdf?rnd=133578923782270000&v=9 7b04eee7-1ce0-4d02-8b90-2e4b0ee70fb0 SGC_421 Thu, 18 Apr 2024 05:39:38 GMT 2024-04-18T05:39:38+00:00 2024-04-18T05:39:38+00:00 eng document B User's Manual SGC 421 Product sheet 4189341339 UK.pdf (1) https://deif-cdn-umbraco.azureedge.net/media/qt1alv4f/sgc-421-product-sheet-4189341339-uk.pdf?rnd=133578923502500000&v=9 d705f69c-0bc5-467e-9da1-b4e2c4183c25 SGC_421 Thu, 18 Apr 2024 05:39:10 GMT 2024-04-18T05:39:10+00:00 2024-04-18T05:39:10+00:00 eng document B Brochures/Handouts SGC 421 Data sheet 4921240633 UK.pdf (1) https://deif-cdn-umbraco.azureedge.net/media/lbzblehm/sgc-421-data-sheet-4921240633-uk.pdf?rnd=133578923283670000&v=9 90057340-27ec-4cbf-aebd-cf716d5c1632 SGC_421 Thu, 18 Apr 2024 05:38:48 GMT 2024-04-18T05:38:48+00:00 2024-04-18T05:38:48+00:00 eng document C Data Sheet SGC Smart Connect - v5.5.7.38 https://deif-staging.jcdhotel.dk/software/sgc-smart-connect/5-5-7-38/ a5e99b30-0c84-4e51-bdd1-a3787aadbc1f 2025-02-03T00:00:00+00:00 software-version SGC Smart Connect 5.5.7.38 current DEIF Smart Connect SW for SGC 1xx and 4xx

    Improvements

    • Compatibility:  improved compatibility with Windows 11. 
    • Updated read/write handling from PC with different regional settings.
    • Nominal power and alternate nominal power minimum value changed to 1 KW.

    Corrections

    • Fixed decimal point issue in S4 sensor in SGC 420 R8.
    • Fixed alternate nominal power value preview before saving.

    Supported versions:

    • SGC 120 R9.11 and previous versions.
    • SGC 420 R8.09 and previous versions.
    ]]>         SGC Smart Flash - v4.1.0.3 https://deif-staging.jcdhotel.dk/software/sgc-smart-flash/4-1-0-3/ 87e6c3bb-ae7c-4937-aa38-65ca219c03e6 2025-03-31T00:00:00+00:00 software-version SGC Smart Flash 4.1.0.3 current Compatibility with:
    • SGC 120 R17.00 and below.
    • SGC 120 R17.00 Lite and below.
    • SGC 420 R17.00 and below.
    • SGC 420 R17.00 Lite and below.
    • RDC 100 R1.00.

    Smart Flash is renamed to Smart Flash Next.

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