To Next PageTo Next PageHow to fix unstable load sharing in Deif Control Unit?
To correct unstable load sharing or parallel with mains power control on your Deif Control Unit, where synchronization is OK and single generator frequency control is also OK, apply a 3-4% speed drop on the prime mover governor. The instability is likely due to the generators lacking speed droop.
How to fix unstable voltage control in Deif Control Unit?
To fix unstable load sharing or parallel with mains voltage (var) control in your Deif Control Unit, where synchronization is OK and single generator voltage control is also OK, apply a 3-4% voltage drop on the generator AVR. The issue is likely due to the generators lacking voltage droop.
What to do if load sharing is not equal in Deif Control Unit?
If your Uni-line active power load sharing Deif Control Unit has stable but unequal load sharing, and synchronization and single generator frequency control are OK, remount the load sharers to match the generators. This issue can occur when load sharers are mounted to control the wrong size generators. Note that load sharers are pre-configured for a specific generator.
What causes unequal var load sharing in Deif Control Unit?
If your Uni-line reactive power load sharing Deif Control Unit has stable but unequal var load sharing, and synchronization and single generator voltage control are OK, remount the var load sharers to match the generators. This problem can arise if var load sharers are mounted to control the wrong size generators, as they are preconfigured for specific generators.
What to do if load sharing is unstable in Deif Control Unit?
If your Uni-line active power load sharing Deif Control Unit has unstable load sharing or parallel with mains power control, and synchronization and single generator frequency control are OK, check the connections of the measuring voltage and/or current transformer input. Correct the connections by ensuring voltage is on L1 and L2, and the current transformer is in L1.
How to troubleshoot unstable var control in Deif Control Unit?
If your Uni-line reactive power load sharing Deif Control Unit has unstable var load sharing or parallel with mains var control, and synchronization and single generator voltage control are OK, check the connections of the measuring voltage and/or current transformer input and/or voltage transducer. Ensure voltage is connected to L1 and L2, the current transformer is in L1, and the voltage transducer is connected to US-line (term. 38 (+) and 39 (-)).
Why does speed decrease instead of increase in Deif Control Unit?
If the speed decreases when an increase was expected with relay outputs on your Deif Control Unit, the relay outputs ‘up’ and ‘down’ may be reversed. Swap the connections to resolve this.
What to do if speed decreases unexpectedly in Deif Control Unit?
If the speed decreases when an increase was expected with analogue output on your Deif Control Unit, the outputs ‘+’ and ‘-‘ may be reversed. Swap the connections to correct this.
Why generator not taking full load in Deif Control Unit?
If the generator is not able to take load to 100% with your Deif Control Unit, there could be a couple of reasons: * The initial setting of the speed governor may not be correct. Refer to the chapters regarding governor/AVR checks. * The analogue output from the DEIF equipment may have too low output range. Increase the full scale value, especially when using electronic potentiometers.
How to stop engine overspeeding in Deif Control Unit?
If the engine overspeeds when starting up with your Deif Control Unit, the regulator output may be too high. Decrease the analogue output signal by decreasing the resistor.
General| Brand | Deif |
|---|---|
| Model | Multi-line 2 |
| Category | Controller |
| Language | English |
Provides overview of handbook's purpose, functionality, and applications for unit setup.
Identifies primary audience as panel builder designers for unit parameter setup.
Outlines the structure and contents of the handbook by chapter.
Details DEIF's responsibility and legal disclaimer regarding installation and operation.
Provides precautions for protecting terminals from static discharge during installation.
Highlights risks of dangerous currents/voltages, stressing authorized personnel for installation.
Explains symbols like Notes and Warnings used throughout the document.
Introduces the AGC as part of the DEIF Multi-line 2 family for gen-set control.
Describes AGC as a micro-processor based control unit for gen-set protection and control.
Lists available options supplementing the basic AGC versions for enhanced functionality.
Warns about remote control safety when using PC utility software like M Vision or GDU.
Lists and describes standard functions including operation modes, engine control, protections, display, M-logic, and GSM-communication.
Illustrates I/Os for selectable standard and optional hardware, referring to data sheets.
Details various gen-set applications like AMF, Island operation, Fixed power, etc., with mode descriptions.
Presents single-line diagrams illustrating different applications such as AMF and Island operation.
Illustrates principles of key functions like mode shift, start/stop sequences, and breaker operations.
Provides information on engine, generator, and mains breaker sequences, including start/stop and breaker operations.
Describes the display unit's 4 lines, 20 characters per line, and push-button functions.
Details the function of each push-button on the display unit for navigation and control.
Explains the meaning and status indications of the 10 LEDs on the display unit.
Outlines the two menu systems (View and Setup) and entry window for unit configuration.
Describes start sequence deactivation via remove starter event or running feedback.
Details how AGC accounts for breaker spring reload time via timers or digital feedbacks.
Explains how to avoid nuisance alarms during controlled states like gen-set stop.
Describes the function of digital input 114 for restricting parameter configuration and mode changes.
Enables automatic gen-set start/stop at specific times, configurable via PC utility software.
Reduces maximum gen-set output power based on specific conditions like ambient temperature.
Modifies start/stop sequences for gen-set operation under low-temperature conditions.
Tests battery condition by initiating start sequence and monitoring voltage drop.
Defines categories for alarms and subsequent actions, with six different classes available.
Details available binary inputs, their configurability, and input types for various functions.
Configures relay and transistor outputs for various functions like alarms, limits, and pulses.
Describes governor and AVR controllers, detailing their active states in different running situations.
Illustrates PI regulators for frequency and power control, showing output conversion to analogue or PWM.
Explains the proportional part of PI control, its immediate output change based on KP setting.
Details the integral action coefficient (KI) and its effect on reset time for regulation.
Describes regulation using relay outputs, split into five steps based on deviation and range.
Explains synchronising gen-set at different speeds (slip frequency) to avoid reverse power trips.
Describes synchronising gen-set at same speed and phase angles for matching.
Details how the frequency controller brings gen-set frequency to busbar frequency, then phase controller manages phase angle.
Allows gen-set startup with excitation switched off, enabling quick load readiness.
Modifies default synchronisation logic using digital inputs and extra relay outputs.
Guides users to find parameter descriptions in Chapter 10 'Parameter list'.
Details parameter structure, including menu number, title, settings, and factory values.
Provides step-by-step instructions on how to locate and change a specific parameter setting.
Explains the possible adjustments for parameters like Setpoint, Timer, Relay output, Enable, and Fail class.
Lists parameters for protection functions like Reverse power and Overcurrent.
Details parameters for synchronisation and regulation setups.
Configures parameters for binary and analogue inputs, including timers, relay outputs, and fail classes.
Covers system setup parameters like nominal settings, transformer, engine type, and gen-set modes.
