Deif CGC 400 Product guide

DEIF A/S · Frisenborgvej 33 · DK-7800 Skive · Tel.: [phone] · Fax: [phone] · [e-mail] · www.deif.com
DEIF A/S · Frisenborgvej 33 · DK-7800 Skive · Tel.: [phone] · Fax: [phone] · [e-mail] · www.deif.com
DEIF A/S · Frisenborgvej 33 · DK-7800 Skive · Tel.: [phone] · Fax: [phone] · [e-mail] · www.deif.com
DESIGNER'S REFERENCE HANDBOOK
Compact Genset Controller, CGC 400
● General product information
● Functional description
● Additional functions
● Protections
Document no.: 4189340786B
SW version: 1.00

1. General information
1.1. Warnings, legal information and safety..................................................................................................5
1.1.1. Warnings and notes ......................................................................................................................5
1.1.2. Legal information and disclaimer ..................................................................................................5
1.1.3. Safety issues ................................................................................................................................5
1.1.4. Electrostatic discharge awareness ...............................................................................................5
1.1.5. Factory settings ............................................................................................................................6
1.2. About the designer's reference handbook..............................................................................................6
1.2.1. General purpose ...........................................................................................................................6
1.2.2. Intended users ..............................................................................................................................6
1.2.3. Contents and overall structure ......................................................................................................6
2. General product information
2.1. Introduction.............................................................................................................................................7
2.1.1. Introduction....................................................................................................................................7
2.2. Type of product......................................................................................................................................7
2.3. Options...................................................................................................................................................7
2.3.1. Options .........................................................................................................................................7
2.4. PC utility software warning.....................................................................................................................7
2.4.1. PC USW warning ..........................................................................................................................7
3. Passwords
3.1. Passwords and parameter access.........................................................................................................8
3.1.1. Password.......................................................................................................................................8
3.1.2. Parameter access..........................................................................................................................9
4. Functional descriptions
4.1. Standard functions...............................................................................................................................10
4.1.1. Standard functions ......................................................................................................................10
4.1.2. Operation modes.........................................................................................................................10
4.1.3. Engine control..............................................................................................................................10
4.1.4. Generator protection (ANSI) .......................................................................................................10
4.1.5. Busbar protection (ANSI) ............................................................................................................11
4.1.6. Display.........................................................................................................................................11
4.1.7. M-Logic........................................................................................................................................11
4.2. Terminal strip overview........................................................................................................................11
4.2.1. Reference to Installation Instructions...........................................................................................11
4.3. Measurement systems.........................................................................................................................11
4.3.1. Single phase system....................................................................................................................11
4.3.2. Split phase system.......................................................................................................................12
4.3.3. Three-phase system....................................................................................................................12
4.4. Applications..........................................................................................................................................13
4.4.1. Applications and genset modes...................................................................................................13
4.4.2. Application design........................................................................................................................13
4.4.3. AMF (no back synchronisation)...................................................................................................15
4.4.4. Island operation...........................................................................................................................16
4.4.5. Load takeover..............................................................................................................................16
4.5. Running mode description....................................................................................................................16
4.5.1. Manual mode...............................................................................................................................16
4.5.2. Test mode....................................................................................................................................17
4.5.3. Simple test...................................................................................................................................17
4.5.4. Full test........................................................................................................................................17
4.5.5. Block mode..................................................................................................................................18
4.6. Single-line diagrams.............................................................................................................................18
4.6.1. Application illustration .................................................................................................................18
4.6.2. Automatic Mains Failure..............................................................................................................19
4.6.3. Island operation...........................................................................................................................19
4.6.4. Load takeover..............................................................................................................................20
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4.7. Flowcharts............................................................................................................................................20
4.7.1. Flowcharts...................................................................................................................................20
4.7.2. Mode shift....................................................................................................................................21
4.7.3. MB open sequence......................................................................................................................22
4.7.4. GB open sequence......................................................................................................................23
4.7.5. Stop sequence.............................................................................................................................24
4.7.6. Start sequence.............................................................................................................................25
4.7.7. MB close sequence.....................................................................................................................26
4.7.8. GB close sequence......................................................................................................................27
4.7.9. Load takeover..............................................................................................................................28
4.7.10. Island operation.........................................................................................................................29
4.7.11. Automatic Mains Failure, AMF...................................................................................................30
4.7.12. Test sequence...........................................................................................................................31
4.8. Sequences...........................................................................................................................................32
4.8.1. Sequences...................................................................................................................................32
4.8.2. Start sequence.............................................................................................................................33
4.8.3. Start sequence conditions...........................................................................................................34
4.8.4. Running feedback........................................................................................................................35
4.8.5. Stop sequence.............................................................................................................................38
4.8.6. Breaker sequences......................................................................................................................40
4.8.7. AMF timers..................................................................................................................................40
5. Display and menu structure
5.1. Reference to operator's manual...........................................................................................................43
6. Engine communication
6.1. Reference to H5 manual......................................................................................................................44
6.1.1. Engine communication ...............................................................................................................44
7. Additional functions
7.1. Start functions......................................................................................................................................45
7.1.1. Start functions..............................................................................................................................45
7.1.2. Digital feedbacks.........................................................................................................................45
7.1.3. Analogue tacho feedback............................................................................................................46
7.1.4. Oil pressure.................................................................................................................................47
7.2. Phase sequence error..........................................................................................................................49
7.2.1. Description of phase sequence error ..........................................................................................49
7.3. Breaker types.......................................................................................................................................49
7.3.1. Breaker types...............................................................................................................................49
7.4. Breaker spring load time......................................................................................................................49
7.4.1. Principle.......................................................................................................................................50
7.5. Alarm inhibit..........................................................................................................................................51
7.5.1. Run status (6160)........................................................................................................................53
7.6. Access lock..........................................................................................................................................54
7.7. Digital mains breaker control................................................................................................................56
7.8. Command timers..................................................................................................................................57
7.9. Running output.....................................................................................................................................58
7.10. Idle running.........................................................................................................................................59
7.10.1. Idle running................................................................................................................................59
7.10.2. Description.................................................................................................................................59
7.10.3. Examples...................................................................................................................................60
7.10.4. Inhibit.........................................................................................................................................61
7.10.5. Running signal...........................................................................................................................61
7.10.6. Idle speed flowcharts.................................................................................................................61
7.10.7. Start...........................................................................................................................................62
7.10.8. Stop...........................................................................................................................................63
7.11. Engine heater.....................................................................................................................................63
7.11.1. Engine heater alarm..................................................................................................................64
7.12. Ventilation...........................................................................................................................................64
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7.12.1. Max. ventilation alarm................................................................................................................65
7.13. Not in auto..........................................................................................................................................65
7.14. Fuel pump logic..................................................................................................................................65
7.14.1. Fuel fill check.............................................................................................................................66
7.15. Fail class............................................................................................................................................67
7.15.1. Fail class....................................................................................................................................67
7.15.2. Engine running...........................................................................................................................67
7.15.3. Engine stopped..........................................................................................................................68
7.15.4. Fail class configuration..............................................................................................................68
7.16. Service timers.....................................................................................................................................69
7.17. Wire fail detection...............................................................................................................................70
7.18. Digital inputs.......................................................................................................................................71
7.18.1. Functional description................................................................................................................72
7.19. Outputs...............................................................................................................................................74
7.19.1. Functional description................................................................................................................75
7.20. Multi-inputs.........................................................................................................................................76
7.20.1. Multi-inputs................................................................................................................................76
7.20.2. 4-20 mA ....................................................................................................................................77
7.20.3. Pt100/Pt1000.............................................................................................................................77
7.20.4. RMI inputs..................................................................................................................................77
7.20.5. RMI oil........................................................................................................................................77
7.20.6. RMI water..................................................................................................................................78
7.20.7. RMI fuel.....................................................................................................................................79
7.20.8. Illustration of configurable inputs...............................................................................................80
7.20.9. Configuration.............................................................................................................................81
7.20.10. Scaling of 4-20 mA inputs........................................................................................................81
7.20.11. Binary ......................................................................................................................................83
7.21. Input function selection.......................................................................................................................83
7.22. Language selection............................................................................................................................84
7.22.1. Language selection ...................................................................................................................84
7.23. Text in status line...............................................................................................................................84
7.23.1. Standard texts............................................................................................................................85
7.24. Counters.............................................................................................................................................86
7.25. M-Logic...............................................................................................................................................87
7.26. Buzzer................................................................................................................................................87
7.26.1. Buzzer .......................................................................................................................................87
7.27. USW communication..........................................................................................................................87
7.27.1. USW communication ................................................................................................................87
7.28. Nominal settings.................................................................................................................................88
7.28.1. How to change the nominal settings..........................................................................................88
7.29. Scaling................................................................................................................................................88
7.30. Differential measurement...................................................................................................................89
7.30.1. Differential measurement...........................................................................................................89
7.31. Filename extension............................................................................................................................91
7.31.1. Filename extension ...................................................................................................................91
7.32. Modbus parameters...........................................................................................................................91
7.32.1. Modbus parameters ..................................................................................................................91
7.33. Battery low voltage alarm timer..........................................................................................................91
7.33.1. Battery low voltage alarm timer ................................................................................................91
8. Protections
8.1. General.................................................................................................................................................93
8.1.1. General........................................................................................................................................93
8.2. Voltage-dependent (restraint) overcurrent...........................................................................................95
9. Parameter list
9.1. Related parameters..............................................................................................................................96
9.1.1. Related parameters ....................................................................................................................96
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1. General information
1.1 Warnings, legal information and safety
1.1.1 Warnings and notes
Throughout this document, a number of warnings and notes with helpful user information will be presented.
To ensure that these are noticed, they will be highlighted as follows in order to separate them from the gener-
al text.
Warnings
Warnings indicate a potentially dangerous situation, which could result in death, personal in-
jury or damaged equipment, if certain guidelines are not followed.
Notes
Notes provide general information, which will be helpful for the reader to bear in mind.
1.1.2 Legal information and disclaimer
DEIF takes no responsibility for installation or operation of the generator set. If there is any doubt about how
to install or operate the engine/generator controlled by the unit, the company responsible for the installation or
the operation of the set must be contacted.
The unit is not to be opened by unauthorised personnel. If opened anyway, the warranty will be
lost.
Disclaimer
DEIF A/S reserves the right to change any of the contents of this document without prior notice.
1.1.3 Safety issues
Installing and operating the unit may imply work with dangerous currents and voltages. Therefore, the instal-
lation should only be carried out by authorised personnel who understand the risks involved in working with
live electrical equipment.
Be aware of the hazardous live currents and voltages. Do not touch any AC measurement in-
puts as this could lead to injury or death.
DEIF do not recommend to use the USB as the primary power supply for the unit.
1.1.4 Electrostatic discharge awareness
Sufficient care must be taken to protect the terminal against static discharges during the installation. Once the
unit is installed and connected, these precautions are no longer necessary.
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1.1.5 Factory settings
The unit is delivered from factory with certain factory settings. These are based on average values and are
not necessarily the correct settings for matching the engine/generator set in question. Precautions must be
taken to check the settings before running the engine/generator set.
1.2 About the designer's reference handbook
1.2.1 General purpose
This Designer's Reference Handbook mainly includes functional descriptions, presentation of display unit and
menu structure, the procedure for parameter setup and reference to parameter lists.
The general purpose of this document is to provide useful overall information about the functionality of the
controlelr and its applications. This document also offers the user the information he needs in order to suc-
cessfully set up the parameters needed in his specific application.
Please make sure to read this document before starting to work with the controller and the
genset to be controlled. Failure to do this could result in human injury or damage to the equip-
ment.
1.2.2 Intended users
This Designer's Reference Handbook is mainly intended for the panel builder designer in charge. On the ba-
sis of this document, the panel builder designer will give the electrician the information he needs in order to
install the unit, e.g. detailed electrical drawings. In some cases, the electrician may use these installation in-
structions himself.
1.2.3 Contents and overall structure
This document is divided into chapters, and in order to make the structure simple and easy to use, each
chapter will begin from the top of a new page.
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2. General product information
2.1 Introduction
2.1.1 Introduction
This chapter will deal with the unit in general and its place in the DEIF product range.
The CGC, short for Compact Genset Controller, is part of the DEIF Compact Genset Controller range, based
on standard advanced software of Multi-line 2. The concept of the CGC is to offer a cost-effective solution to
genset builders, who need a flexible generator protection and control unit for small single to medium and
large genset applications.
2.2 Type of product
The compact genset controller is a micro-processor based control unit containing all necessary functions for
protection and control of a genset.
It contains all necessary 3-phase measuring circuits, and all values and alarms are presented on the LCD
display.
The CGC 400 will come in two different variants: CGC 412 and CGC 413.
The CGC 412 is the unit that is able to perform auto start, and the CGC 413 is able to make the automatic
mains failure (AMF) sequences. The hardware for the two products is different, therefore some of the sequen-
ces described in this document are only relevant to one of the variants. You will find a detailed description of
the available functions in each product in the chapter "Standard Functions".
For detailed specifications of the hardware, please refer to the datasheet.
2.3 Options
2.3.1 Options
When ordering the CGC 400, it comes with a number of features, which were options in the other DEIF prod-
ucts.
The customer cannot add or remove any of these features/options.
The included features are A1, C2, H2, H5.
2.4 PC utility software warning
2.4.1 PC USW warning
It is possible to remote-control the genset from the PC utility software or AGI. To avoid person-
al injury, make sure that it is safe to remote-control the genset.
DEIF do not recommend to use the USB as the primary power supply for the unit.
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3. Passwords
3.1 Passwords and parameter access
3.1.1 Password
The unit includes three password levels. All levels can be adjusted in the PC software.
Available password levels:
Password level Factory setting Access
Customer Service Master
Customer 2000 X
Service 2001 X X
Master 2002 X X X
A parameter cannot be entered with a password that is ranking too low. But the settings can be displayed
without password entry.
Each parameter can be protected by a specific password level. To do so, the PC utility software must be
used. Enter the parameter to be configured and select the correct password level.
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The password level can also be changed from the parameter view in the column "Level".
3.1.2 Parameter access
To gain access to adjust the parameters, the password level must be entered:
If the password level is not entered, it is not possible to enter the parameters.
The customer password can be changed in jump menu 9116. The service password can be
changed in jump menu 9117. The master password can be changed in jump menu 9118.
The factory passwords must be changed if the operator of the genset is not allowed to change
the parameters.
It is not possible to change the password at a higher level than the password entered.
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4. Functional descriptions
4.1 Standard functions
4.1.1 Standard functions
This section includes functional descriptions of standard functions as well as illustrations of the relevant appli-
cation types. Flowcharts and single-line diagrams will be used in order to simplify the information.
The standard functions are listed in the following paragraphs.
The table below describes the genset modes that are available, depending on the variant of the CGC to be
used.
Application Comment
Automatic Mains Failure (AMF) (no back sync.) CGC 413
Island operation CGC 412/CGC 413
Load takeover CGC 413
On the hardware point of view, the CGC 412 has a lighter specification than the CGC 413.
The table below describes which points differ from each other.
Feature (terminal numbers) Available on CGC 412 Available on CGC 413
Mains measurement (term. 28 to 32) No Yes
Extra multi-inputs (term. 58 and 59) No Yes
Extra binary inputs (term. 56 and 57) No Yes
4.1.2 Operation modes
● Automatic Mains Failure
● Island operation
● Load takeover
4.1.3 Engine control
● Start/stop sequences
● Run and stop coil
4.1.4 Generator protection (ANSI)
● 2 x reverse power (32)
● 5 x overload (32)
● 4 x overcurrent (50/51)
● 2 x overvoltage (59)
● 3 x undervoltage (27)
● 3 x over-/underfrequency (81)
● Multi-inputs (digital, 4-20 mA, Pt100, Pt1000 or RMI)
● Digital inputs
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The overcurrent level is limited to 200% of the nominal current. Therefore, it cannot be consid-
ered as a short-circuit protection.
4.1.5 Busbar protection (ANSI)
● 2 x over-voltage (59)
● 2 x under-voltage (27)
● 2 x over-frequency (81)
● 2 x under-frequency (81)
4.1.6 Display
● Push-buttons for start and stop
● Push-buttons for breaker operations
● Status texts
4.1.7 M-Logic
● Simple logic configuration tool
● Selectable input events
● Selectable output commands
4.2 Terminal strip overview
4.2.1 Reference to Installation Instructions
Please see the Installation Instructions for terminal strip overview and rear side controller view.
4.3 Measurement systems
The CGC 400 is designed for measurement of voltages between 100 and 480V AC. For further reference, the
AC wiring diagrams are shown in the Installation Instructions. In menu 9130, the measurement principle can
be changed between three-phase, single phase and split phase.
Configure the CGC 400 to match the correct measuring system. When in doubt, contact the
switchboard manufacturer for information about the required adjustment.
4.3.1 Single phase system
The single phase system consists of one phase and the neutral.
The following adjustments must be made to make the system ready for the single phase measuring (example
230V AC):
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Setting Adjustment Description Adjust to
value
6004 G nom. voltage Phase-neutral voltage of the generator 230V AC
6041 G transformer Primary voltage of the G voltage transformer (if installed) UNOM x √3
6042 G transformer Secondary voltage of the G voltage transformer (if installed) UNOM x √3
6051 BB transformer Primary voltage of the BB voltage transformer (if installed) UNOM x √3
6052 BB transformer Secondary voltage of the BB voltage transformer (if installed) UNOM x √3
6053 BB nom. voltage Phase-phase voltage of the busbar UNOM x √3
The voltage alarms refer to UNOM (230V AC).
The controller has two sets of BB transformer settings, which can be enabled individually in
this measurement system.
4.3.2 Split phase system
This is a special application where two phases and neutral are connected to the controller. The controller
shows phases L1 and L3 in the display. The phase angle between L1 and L3 is 180 degrees. Split phase is
possible between L1-L2 or L1-L3.
The following adjustments must be made to make the system ready for the split phase measuring (example
240/120V AC):
Setting Adjustment Description Adjust to
value
6004 G nom. voltage Phase-phase voltage of the generator 120V AC
6041 G transformer Primary voltage of the G voltage transformer (if installed) UNOM
6042 G transformer Secondary voltage of the G voltage transformer (if installed) UNOM
6051 BB transformer Primary voltage of the BB voltage transformer (if installed) UNOM
6052 BB transformer Secondary voltage of the BB voltage transformer (if installed) UNOM
6053 BB nom. voltage Phase-phase voltage of the busbar UNOM
The measurement UL3L1 shows 240V AC. The voltage alarm setpoints refer to the nominal volt-
age 120V AC, and UL3L1 does not activate any alarm.
The controller has two sets of BB transformer settings, which can be enabled individually in
this measurement system.
4.3.3 Three-phase system
When the controller is delivered from the factory, the three-phase system is selected. When this principle is
used, all three phases must be connected to the controller.
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The following adjustments must be made to make the system ready for the three-phase measuring (example
400/230V AC):
Setting Adjustment Description Adjust to
value
6004 G nom. voltage Phase-phase voltage of the generator 400V AC
6041 G transformer Primary voltage of the G voltage transformer (if installed) UNOM
6042 G transformer Secondary voltage of the G voltage transformer (if installed) UNOM
6051 BB transformer Primary voltage of the BB voltage transformer (if installed) UNOM
6052 BB transformer Secondary voltage of the BB voltage transformer (if installed) UNOM
6053 BB nom. voltage Phase-phase voltage of the busbar UNOM
The controller has two sets of BB transformer settings, which can be enabled individually in
this measurement system.
4.4 Applications
4.4.1 Applications and genset modes
This section about applications is to be used for reference using the particular genset mode as
starting point. It is not suitable for reading from beginning to end.
The unit can be used for the applications listed in the table below.
Application Comment
Automatic Mains Failure (no back sync.) CGC 413
Island operation CGC 412/CGC 413
Load takeover CGC 413
Genset mode Running mode
Auto Test Man Block
Automatic Mains Failure (no back sync.) X X X X
Island operation X X X X
Load takeover X X X X
For a general description of the available running modes, please refer to the chapter "Running
mode description".
4.4.2 Application design
The application is designed through the utility software. Please select configuration.
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Select a new application and adjust the settings in this dialogue box.
The product will be automatically selected if you are currently connected to the unit when doing this configu-
ration.
When using the CGC 400, the plant type will be stuck to "Single DG". This means no CAN communication
can be established with other units.
The active choice we can make here is the name of the application.
Using the CGC 400, only one application will be available.
Now the application can be designed using the section control panel.
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For each area, it is defined whether a generator and a mains are present, and the number and type of break-
ers.
If a CGC 412 is currently connected, it will not be possible to draw an application with a mains or a mains
breaker.
This application configuration setup is here to give the user the choice of which breaker type is in use.
It will be possible to choose between "Pulse", "Continuous NE" or "Compact" for the generator breaker.
For the mains breaker, in case a CGC 413 is connected, the choice will be between "Pulse", "Continuous
NE", "Continuous ND" or "Compact".
4.4.3 AMF (no back synchronisation)
Auto mode description
The unit automatically starts the genset and switches to generator supply at a mains failure after an adjusta-
ble delay time. It is possible to adjust the unit to change to genset operation in two different ways:
1. The mains breaker will be opened at genset start-up.
2. The mains breaker will remain closed until the genset is running, and the genset voltage and frequency is
OK.
In both cases, the generator breaker will be closed when the generator voltage and frequency is OK, and the
mains breaker is open.
When the mains returns, the unit will switch back to mains supply and cool down and stop the genset. The
switching back to mains supply is done when the adjusted "Mains OK delay" has expired.
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For a general description of the available running modes, please refer to the chapter "Running
mode description".
4.4.4 Island operation
Auto mode description
The unit automatically starts the genset and closes the generator breaker at a digital start command. When
the stop command is given, the generator breaker is tripped, and the genset will be stopped after a cooling
down period. The start and stop commands are used by activating and deactivating a digital input or with the
time-dependent start/stop commands. If the time-dependent start/stop commands are to be used, the auto
mode must also be used.
For a general description of the available running modes, please refer to the chapter "Running
mode description".
4.4.5 Load takeover
Auto mode description
The purpose of the load takeover mode is to transfer the load imported from the mains to the genset for oper-
ation on generator supply
The unit automatically starts the genset and closes the generator breaker at a digital start command. When
the stop command is given, the generator breaker is tripped, and the genset will be stopped after a cooling-
down period. The start and stop commands are used by activating and deactivating a digital input or with the
time-dependent start/stop commands. If the time-dependent start/stop commands are to be used, then the
auto mode must also be used.
4.5 Running mode description
4.5.1 Manual mode
The unit can be operated in manual mode (MAN). Manual means that the unit will not initiate any sequences
automatically, as is the case with the auto mode. It will only initiate sequences, if external signals are given.
An external signal may be given in three ways:
1. Display push-buttons
2. Digital inputs
3. Modbus command at service port or RS485
The standard CGC 400 is only equipped with a limited number of digital inputs, please refer to
"Digital inputs" in this document and the data sheet for additional information about availabili-
ty.
The following sequences can be activated in manual mode:
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Command Description Comment
Start The start sequence is initiated and continues until the genset starts or the
maximum number of start attempts has been reached. If Hz/V OK the GB
is ready to close.
Stop The genset will be stopped. After disappearance of the running signal, the
stop sequence will continue to be active in the ‘"extended stop time" peri-
od. The genset is stopped with cooling down time.
The cooling
down time is
cancelled if the
stop button is
activated twice.
Close GB The unit will close the generator breaker if the mains breaker is open
Open GB The unit will open the generator breaker instantly
Close MB The unit will close the mains breaker if the generator breaker is open
Open MB The unit opens the mains breaker instantly.
4.5.2 Test mode
The test mode function is activated by activating a digital input, Modbus RS485, USW or the TEST push-but-
ton on the display.
The settings for the test function are set up in menu
7040 Test
● Timer: Period starts when U/f is ok. Engine stops when time runs out.
● Return: When the test is completed, the unit will return to the selected mode (manual or auto).
● Type: Selection of one of the two types of tests: simple or full.
If the timer in parameter 7042 is set to 0.0 min., the test sequence will be infinite. The test will
be cancelled by pushing TEST again.
The test will be interrupted if the mode is changed to either manual or auto.
4.5.3 Simple test
The controller will go through the start sequence and run the engine for the time set in parameter 7042 with-
out any breaker operation. This sequence is initiated by a digital input or the TEST push-button on the front.
The test will run until the timer expires. When the timer runs out, the stop sequence including cooling down
will be carried out.
4.5.4 Full test
The full test will start the genset, open the mains breaker, if pressent, and close the generator breaker. When
the test timer expires or the test is cancelled by mode change, the generator breaker is opened, the mains
breaker closed, if pressent, and the generator is stopped after the cooldown time.
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It is possible to open and close the generator breaker and the mains breaker in manual mode.
4.5.5 Block mode
Block mode can be enabled by pressing the MAN button twice, with M-Logic or a digital input. When block
mode is selected, the controller will be locked for certain actions. This means that it cannot start the genset or
perform any breaker operations from the buttons.
The purpose of the block mode is to make sure that the genset does not start for instance during mainte-
nance work.
It is important to know that the digital input configured to block mode is a constant signal. So,
when it is ON, the unit is in a blocked state, and when it is OFF, it returns to the mode it was in
before block mode was selected.
When controller goes into block mode, it will:
● Open GB, shut down the engine, show "BLOCK" in the display and flash the MAN LED
● GB ON, GB OFF, MB ON, MB OFF and START buttons are locked
If block mode is selected using the display, the block mode can only be deactivated from the display. If block
mode is selected using the digital input, the block mode can only be deactivated by setting the digital input to
OFF.
Before the running mode is changed, it is important to check that persons are clear of the gen-
set and that the genset is ready for operation.
Alarms are not influenced by block mode selection.
The genset can be started from the local engine control panel, if such is installed. Therefore,
DEIF recommends avoiding local cranking and starting of the genset.
The genset will shut down if block mode is selected while the genset is running.
4.6 Single-line diagrams
4.6.1 Application illustration
In the following, the various applications are illustrated in single-line diagrams.
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4.6.2 Automatic Mains Failure
G
Controller
Load
4.6.3 Island operation
G
Controller
Load
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4.6.4 Load takeover
G
Controller
Load
4.7 Flowcharts
4.7.1 Flowcharts
Using flowcharts, the principles of the most important functions will be illustrated in the next sections. The
functions included are:
● Mode shift
● MB open sequence
● GB open sequence
● Stop sequence
● Start sequence
● MB close sequence
● GB close sequence
● Load takeover
● Island operation
● Automatic Mains Failure
● Test sequence
The flowcharts on the following pages are for guidance only. For illustrative purposes, the
flowcharts are simplified in some extent.
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