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Barbara CarterSep 4, 2025
How to fix incorrect engine RPM on Deif Controller?
- NnoahnewmanSep 4, 2025
If the Deif Controller shows an incorrect engine RPM, check the wiring of the main alternator’s L1-phase and neutral to the controller.
How to fix incorrect engine RPM on Deif Controller?
If the Deif Controller shows an incorrect engine RPM, check the wiring of the main alternator’s L1-phase and neutral to the controller.
Why Deif SGC 420 Controller does not start the engine when a Remote start command is sent?
If the Deif Controller does not start the engine when a Remote start command is sent from an external device, check the wiring of the Remote start signal to the controller's respective digital input terminal. Enter the Configuration mode in the controller and verify the configuration for the Remote start digital input terminal. Also, check that the controller is in Auto mode and that Mains monitoring and Site mode are disabled.
What should I do if the engine runs, but the Deif Controller shows genset to be OFF?
If the engine runs, but the Deif Controller shows the genset to be OFF, check if the alternator voltage signal (L1 phase) is received by the controller terminal. Also, check if the LOP and LLOP are working OK, and verify the wiring to the controller.
What to check if Deif SGC 420 shows incorrect PF value or kW or load current?
If the Deif Controller shows incorrect PF value, kW, or load current, check the wiring of the respective alternator phase voltage and the CT to the controller. Also, check the CT ratio if the kW or current reading is faulty.
How to resolve Error C03 on Deif SGC 420?
Error C03 on the Deif Controller can occur if the controller is disconnected from the PC during a configuration. To resolve this: 1. Press and hold the Stop/Config button during a power cycle to reset the controller. 2. Re-send the configuration file.
Why Deif SGC 420 Controller sends a Crank-start command immediately after power on?
If the Deif Controller sends a Crank-start command immediately after power on, ensure that the controller's output terminal is not directly connected to the starter relay. The controller's output should be given to an intermediate relay which should in-turn power the starter relay. Check start-relay connection with the suitable controller terminal.
How to fix Deif Controller showing genset is ON while the genset is stopped?
If the Deif Controller shows the genset is ON while the genset is stopped, enter the Configuration mode in the controller and verify the configuration for the LLOP and LOP. Check the wiring. Ensure that the mains voltage wiring is not connected by mistake to the controller's genset voltage terminals.
What to do if Deif SGC 420 Controller fails to crank-start the engine?
If the Deif Controller fails to crank-start the engine, you can try the following: * Check the battery voltage. * Enter the Configuration mode in the controller and verify the configuration for the Start output. * Check that the Start output is working correctly by measuring its output voltage. * Enter the Configuration mode in the controller and verify the configuration of the Crank disconnect method. * Verify the configuration of the LLOP Switch polarity. * Ensure that the lube oil pressure switch and sensor are working OK, and check their wiring.
What to do if Deif Controller does not power ON?
If the Deif Controller does not power on, check the battery voltage, the fuse on the battery supply, the continuity between battery positive and controller terminal 2, and the continuity between battery ground and controller terminal 1.
What to do if Deif SGC 420 Controller shows emergency stop alarm without emergency stop activated?
If the Deif Controller shows an emergency stop alarm without the emergency stop being activated: * Check if the Emergency stop switch is working correctly, including the wiring. * Enter the Configuration mode in the controller and verify the configuration of the Emergency stop polarity.
General| Storage temperature | -40°C to +85°C |
|---|---|
| Protection | IP20 |
| Protection Class | IP20 |
| Input Voltage | 100 to 690 V AC |
| Communication | RS485, Ethernet |
| Dimensions | 144 x 144 x 35 mm |
General information about DEIF's SGC 420/421 genset controllers.
Overview of the main features and capabilities of the SGC 420/421 controllers.
Summary of the SGC 420/421 controller's features and specifications.
Description and identification of the physical buttons on the controller.
Contains warranty, disclaimer, and copyright information.
General guidelines and warnings for safe installation and maintenance.
Specific safety precautions related to electrical hazards and shock prevention.
Safety measures to follow during the operation of the controller and genset.
Details on the types and specifications of terminal blocks used in the SGC 420/421.
Specifications related to the controller's power supply requirements and operation.
Technical details for measuring genset voltage and frequency.
Technical specifications for measuring genset current.
Specifications for earth leakage and fan current monitoring.
Technical details for measuring mains voltage and frequency.
Specifications and configuration options for digital inputs.
Details on analogue inputs for resistive sensors, including range and accuracy.
Wiring diagrams showing how analogue inputs can function as digital inputs.
Specifications for analogue voltage and current sensing inputs.
Details on inputs for site battery monitoring and run hours.
Specifications for the magnetic pick-up input used for engine speed sensing.
Specifications for the controller's digital output terminals.
Details on actuator outputs for electronic governing applications on SGC 421.
Specifications for the D+ terminal used for charging alternator control and monitoring.
Description of the sensor common point terminal for analogue sensors.
Details on USB, RS-485, and CAN communication ports.
Physical dimensions of the controller and panel cut-out requirements.
Instructions and illustrations for mounting the controller into a panel.
Detailed description of each terminal on the rear of the controller.
Illustrative wiring diagrams for the SGC 420 controller.
Explanation of the monitoring mode and how display views shift.
Step-by-step guide to entering and navigating the controller's configuration mode.
Overview of the parameters that can be configured on the controller.
Configuration options related to the controller module settings.
Configuration options for digital inputs, including source, polarity, and action.
Configuration details for analogue inputs, including sensor selection and calibration.
Configuration of digital output sources and activation settings.
Configuration of various timers, including cranking and start/stop delays.
Configuration settings for the generator, including voltage and frequency monitoring.
Configuration for mains monitoring, including voltage, frequency, and phase reversal.
Configuration settings related to engine parameters and monitoring.
Settings related to maintenance alarms and due dates.
Configuration of password IDs for controller access.
Configuration options specifically for the rotary actuator on SGC 421.
Guide to selecting sources for digital inputs displayed on the controller.
Guide to selecting sources for digital outputs.
Detailed explanation of the Auto mode operation, including Site Battery Monitoring.
How to operate the controller in Manual mode.
Flowcharts and explanations of engine start and stop sequences.
How the controller detects load in Auto mode using contactor outputs.
Methods used by the controller to detect load in Manual mode.
General information about controller features.
How the controller exits configuration mode automatically.
Functionality for displaying engine running hours in load groups.
Explanation of alarm types, actions, causes, and handling.
Introduction to the Modbus protocol used by the SGC 420.
Information on how to connect the controller for Modbus communication.
Supported Modbus functions and their descriptions.
Configuration parameters for RS-485 Modbus communication.
Mapping of registers for reading data using Modbus function code 03.
Mapping of registers for writing data using Modbus function code 16.
Overview of engine communication capabilities via CAN bus.
Information about default engine communication settings.
List of engine manufacturers supported for J1939 communication.
How to configure the display to show ECU values.
Detailed steps for configuring engine communication using DEIF Smart Connect software.
Information on using the generic J1939 protocol for engine communication.
Introduction to the CAN communication protocol supported by SGC 420/421.
Details on the structure of CAN communication data and commands.
Structure of command messages sent over CAN.
Common faults, their causes, and remedial actions for the controller.
