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Selco C6200 FlexGen Configuration Manual

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C6200 FlexGen GENCONTROLLER
Configuration Manual
SELCO
Betonvej 11 - DK-4000 Roskilde
Denmark
Phone: 45 7026 1122 - Fax: 45 7026 2522
e-mail:
selco@selco.com
Web site:
www.selco.com

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  • Page 1 C6200 FlexGen GENCONTROLLER Configuration Manual SELCO Betonvej 11 - DK-4000 Roskilde Denmark Phone: 45 7026 1122 - Fax: 45 7026 2522 e-mail: selco@selco.com Web site: www.selco.com...

  • Page 2: Table Of Contents

    C6200 FlexGen Table of Contents Preface ............................ 7 System Preparation ........................8 CAN Bus Address ....................... 8 Auxiliary Commands ......................9 3.1.1 Read Measurements ......................9 3.1.2 Read PMS ........................9 3.1.3 Read Alarms ........................9 3.1.4 Read Configuration ......................9 3.1.5 Read Event Log .......................
  • Page 3 C6200 FlexGen 4.2.6.1 Under Frequency Alarm ......................... 24 4.2.6.2 Pre-start of standby generator in case of under frequency alarm ............24 4.2.6.3 Over Frequency Alarm ........................25 4.2.6.4 Pre-start of standby generator in case of over frequency alarm ............25 4.2.7 Reverse Power Alarm ....................
  • Page 4 C6200 FlexGen 4.9.2 Peak import ........................39 4.9.3 Fixed export ........................40 4.9.4 Excess export ........................ 40 4.9.5 Power factor control ...................... 40 4.10 Load depending start and stop ................... 41 4.10.1 Start Condition ......................41 4.10.2 Start ........................... 41 4.10.3...
  • Page 5 C6200 FlexGen 4.13.24 Low Capacity Alarm ....................54 4.13.25 CAT2 Alarm ......................54 4.13.26 Large Consumer Request In- and Outputs ..............54 4.13.27 Voltage and Frequency ok Output ................54 4.13.28 Activation of load sharing schemes via programmable inputs ........54 4.13.29 Frequency Control Disable Output ................
  • Page 6 C6200 FlexGen RS485 ..........................72 Service configuration ......................73 Read Config ........................73 Service Interval ......................... 73 Duty Hour ......................... 73 Service confirmation ......................73 Revision: 20-10-2017 Page 6 of 73...

  • Page 7: Preface

    The Littelfuse Selco C6200 FlexGen provides integrated protection, frequency stabilization, voltage stabilization, check and automatic synchronization, active and reactive load sharing, programmable inputs and outputs and data acquisition. This manual describes the configuration of the C6200 FlexGen by the optional C6500 user interface module or by PC (RS232). Revision: 20-10-2017...

  • Page 8: System Preparation

    2.1 CAN Bus Address The DIP-switch located on the right hand side of the C6200 FlexGen is used to set the CAN bus address. The CAN bus address is set as a binary value on the first 4 switches. Valid CAN bus addresses are 1 to 15.

  • Page 9: Auxiliary Commands

    RS232 interface using either a PC based terminal emulator (TTY terminal) such as HyperTerminal. Littlefuse Selco also offers a specialized PC application called WinConfig. The optional Littelfuse Selco C6500 user interface can also be used to monitor and configure the C6200 FlexGen.

  • Page 10: Set The Time

    Hour:Minute:Second e.g. 14:02:39). 3.1.8 Enable Configuration Write mode By default the C6200 FlexGen will be in read only mode. This means that the configuration can be viewed and dumped but not written or updated. The C6200 must be enabled for writing before any attempt is made to update the configuration. The command to enable write mode is ENABLE.

  • Page 11: Change Of Rs232 Pin

    C6200 FlexGen 3.1.12 Change of RS232 PIN For changing the Read/Write Password it is necessary first to enable the Read/Write Mode as described in 3.1.88. The RS232 console PIN can be changed by the following command, followed by the 4 digit making up the new PIN.

  • Page 12: Configuration

    C6200 FlexGen 4 Configuration The C6200 FlexGen can be configured by using a TTY terminal (RS232), the WinConfig PC application or the C6500 User Interface. This section describes the configuration by the TTY terminal (RS232). The C6200 FlexGen is delivered with a default configuration.

  • Page 13: Over Current Trip

    C6200 FlexGen WRITE PROTECT SC DELAY [100 – 1000] (100) 4.1.2 Over Current Trip The over current (OC) protection function will trip the circuit breaker in case an over current is detected in any one of the three phases. The OC protection will always act on the highest of the three currents measured.

  • Page 14: Voltage Protection

    C6200 FlexGen The trip level is defined as a percentage of the generators phase capacity. Please note that the reference is expressed by the preconfigured power factor (PF) set in the configuration.     NOMVOLT   ...

  • Page 15: Under Voltage Trip

    C6200 FlexGen The trip output for the voltage protection is the Protection Trip Relay (voltage free contact, terminals 48, 49 and 50). 4.1.4.1 Under Voltage Trip The under voltage (UV) protection function can be enabled or disabled by the following command.

  • Page 16: Frequency Protection

    C6200 FlexGen disappeared). If auto reset is not activated the protection function must be manually reset before the circuit breaker can be reengaged. WRITE PROTECT OV AUTORESET [YES / NO] (NO) The choice can be either YES or NO. Default is NO, meaning that reset is required before reengagement of the breaker.

  • Page 17: Over Frequency Trip

    C6200 FlexGen The choice can be either YES or NO. Default is NO, meaning that reset is required before reengagement of the breaker. 4.1.5.2 Over Frequency Trip The over frequency (OF) protection function can be enabled or disabled by the following command.

  • Page 18: Excitation Loss Trip

    C6200 FlexGen The level is set by the following command. The level can be set between 0 % and -20 %. Resolution is 1 %. Default is -2.0 %. WRITE PROTECT RP LEVEL [0.0 - -20.0] (-2.0) The delay is expressed in seconds and can be set between 2.0 and 20.0 s. Resolution is 100 ms.

  • Page 19: Frequency Deviation Protection

    C6200 FlexGen The excitation loss protection can be configured to auto reset. Auto reset means that the circuit breaker can reengage immediately after the protection trip (provided the trip cause has disappeared). If auto reset is not activated the protection function must be manually reset before the circuit breaker can be reengaged.

  • Page 20: Vector Shift Protection

    C6200 FlexGen 4.1.9 Vector Shift Protection This vector shift (VS) protection function is normally only used in grid parallel applications. The vector shift protection will protect the generator from damages due to asynchronous reconnection to the public grid after short time disconnections.

  • Page 21: Alarms

    C6200 FlexGen 4.2 Alarms The alarm functions are typically set up by a set point (alarm level) and a delay. The alarm level is expressed as a percentage of the nominal value, so it is important to understand how the 100% reference is calculated.

  • Page 22: Active Phase Load

    C6200 FlexGen 4.2.2.1 Active Phase Load The components of active loads will be calculated as shown below (active load mode). x Cos φ x Cos φ x Cos φ The alarm level is defined as a percentage of the generators phase capacity. Please note that the reference is expressed by the preconfigured rated power factor.

  • Page 23: Under Voltage Alarm

    C6200 FlexGen 4.2.4.1 Under Voltage Alarm The under voltage alarm function can be enabled or disabled by the following command. The choice can be either YES or NO. Default is NO. WRITE ALARM UV ENABLED <Choice> The alarm level of the under voltage alarm function is expressed as a percentage of the nominal voltage of the generator.

  • Page 24: Frequency Alarm

    C6200 FlexGen The choice can be either YES or NO. Default is NO. 4.2.5 Frequency Alarm The frequency alarm function consists of an over frequency alarm and an under frequency alarm. The alarm will be issued in case the frequency becomes either too low or too high.

  • Page 25: Over Frequency Alarm

    C6200 FlexGen 4.2.6.3 Over Frequency Alarm The over frequency alarm function can be enabled or disabled by the following command. The choice can be either YES or NO. Default is NO. WRITE ALARM OF ENABLED <Choice> The alarm level of the over frequency alarm function is expressed as a percentage of the nominal frequency of the generator.

  • Page 26: Excitation Loss Alarm

    C6200 FlexGen The delay is expressed in seconds and can be set between 2.0 and 20.0 s. Resolution is 100 ms. Default is 5.0s WRITE ALARM RP DELAY [2.0 – 20.0] (5.0) 4.2.8 Excitation Loss Alarm The excitation loss alarm will be issued in case of reverse reactive current or power, which occurs in case the generator loses its excitation.

  • Page 27: Non Essential Load Trip (Preferential Trip/ Load Shedding)

    C6200 FlexGen 4.3 Non Essential Load Trip (Preferential Trip/ Load Shedding) The C6200.0100 includes a preferential trip function on two independent levels. The preferential trip function can be configured to operate either on low frequency, high load or high current. The two preferential trip functions can be configured individually with regard to trip level, delay and mode of operation.

  • Page 28: Current

    C6200 FlexGen x Cos φ x Cos φ x Cos φ The trip level is defined as a percentage of the generators phase capacity. Note that the reference is expressed by the preconfigured power factor.     NOMVOLT ...

  • Page 29: Preferential Trip 2

    C6200 FlexGen The NE1 function will automatically reset by hysteresis. The hysteresis is set by the following command. The level can be set between 0 and 50 %. The reference is the trip point defined by the level. WRITE LOADTRIP NE1 HYST [0 - 50] (10) The delay is expressed in seconds and can be set between 1.0 and 60.0 s.

  • Page 30: Frequency Stabilization

    C6200 FlexGen WRITE LOADTRIP NE2 LEVEL [20 - 150] (90) The NE2 function will automatically reset by hysteresis. The hysteresis is set by the following command. The level can be set between 0 and 50 %. The reference is the trip point defined by the level.

  • Page 31: Deadband

    C6200 FlexGen Setting the delay too low might result in overshoot and instability with a slow reacting (lagging) governor. A too high setting might slow down the regulation. 4.4.3 Deadband The deadband parameter is only used when the speed adjustment is configured to operate with the speed relay.

  • Page 32: Auto Synchronizing

    C6200 FlexGen 4.5 Auto Synchronizing The configuration of the auto synchronizing function depends on whether the speed control is done by the speed relay (increase/decrease contacts) or by analogue output 1. 4.5.1 Dead Bus Closure The dead bus closure function provides the possibility of closing the circuit breaker when no voltage exists on the bus bar.

  • Page 33: Circuit Breaker Close Time

    C6200 FlexGen 4.5.5 Circuit Breaker Close Time The circuit breaker close time (circuit breaker make time) is only used when the speed control is configured to the speed relay. Auto synchronization by relay control is done according to the dynamic synchronization principle. Therefore, it requires the existence of a small positive frequency deviation.

  • Page 34: Active Load Sharing

    C6200 FlexGen 4.6 Active Load Sharing The active load balance is communicated through a set of “parallel lines” that operates with a pre- configured DC voltage. The active load sharer includes a bonus feature of de-loaded trip together with programmable ramp-up and ramp-down of active load.

  • Page 35: Load Deviation

    The range of this analogue voltage signal can be programmed in order to match load sharers of different types (e.g. SELCO T4400 or T4800 load sharers). In case all generators are equipped with C6200 units, this parameter does not need to be changed.

  • Page 36: Voltage Matcher

    C6200 FlexGen 4.7 Voltage Matcher The module includes voltage matching. Voltage matching will automatically bring the voltage within the range specified by the Voltage ok window. If enabled, voltage matching will be conducted before automatic synchronization is initiated. The voltage matching function is configured with stability and deadband.

  • Page 37: Reactive Load Sharing

    C6200 FlexGen 4.8 Reactive Load Sharing The reactive load balance is communicated to a set of “parallel lines” that operates with a pre- configured DC voltage. The load sharer includes a bonus feature of programmable ramp-up and ramp-down of reactive load.

  • Page 38: Cb Trip Level

    The range of this analogue voltage signal can be programmed in order to match reactive load sharers of different types (e.g. SELCO T4900). In case all generators are equipped with C6200 units, this parameter does not need to be changed.

  • Page 39: Grid Parallel Operation Schemes

    C6200 FlexGen 4.9 Grid parallel operation schemes In case the generator should be operated in parallel with the grid, it is necessary to choose the load sharing scheme. The load sharing scheme defines the load reference for the generator. Activation of a grid parallel operation scheme will disable the internal frequency and voltage control.

  • Page 40: Fixed Export

    C6200 FlexGen 4.9.3 Fixed export Fixed export means a certain amount of capacity will be exported to the grid. The 6200 of the grid forces the C6200 modules of the auxiliary generators to produce a certain amount of power into the grid C6200.

  • Page 41: Load Depending Start And Stop

    C6200 FlexGen 4.10 Load depending start and stop A load depending start and stop function can be programmed with C6200. WRITE LOADSTARTSTOP ENABLED NO The choice is YES or NO. Default is NO. For this function a generator priority, a start level, a start delay, a stop level and a stop delay must be programmed It is also necessary to define the start and stop outputs (see Programmable I/O)).

  • Page 42: Sequence

    C6200 FlexGen not signal the generator to stop until the stop level has been passed continuously for the duration defined by the stop delay. The on-line capacity is calculated from the generator max current parameters (in C6200 Module) multiplied with the rated cosphi parameter (in C6200 Module). The total load is calculated as the sum of the active loads on generators running.

  • Page 43: Cool Down Time

    C6200 FlexGen Cyclic: The cyclic sequence starts and stops the generators according the assigned priority. The highest (numerical lowest) prioritised generator is the first to be started, then the second highest etc. The cyclic sequence stops the generators following the “first in first out” principle. The start/stop procedure for three generators can be described as 1-2-3,2-3-1 ,3-1-2,1-2-3…...

  • Page 44: Power Of The Large Consumer

    C6200 FlexGen If enough reserve capacity is available, the corresponding LC acknowledge output (this is a programmable output configured for this function) will be activated. If there is not enough reserve capacity available, the next available generator will be started.

  • Page 45: Priority Selection

    C6200 FlexGen Release Output can be any of the programmable outputs (OUT1, OUT2...OUT8) or it can be deactivated (OFF). Default is OFF. WRITE IOFUNC LC1 <Request Input> <Release Output> WRITE IOFUNC LC2 <Request Input> <Release Output> 4.11.5 Priority Selection The load depending start/ stop priority can be selected via the C6500User Interface, via programmable inputs on the C6200 or via Modbus.

  • Page 46: Programmable Functions

    C6200 FlexGen The relay function is set by the following command. The choice can be either ND or NE. Default is WRITE RELAYS UNLOADTRIP CONTACT <Choice> 4.13 Programmable functions The programmable functions can be controlled via user programmable inputs and outputs or by triggering the functions by Modbus.

  • Page 47: Control Of Governor By Increase Decrease Pulse Signals

    C6200 FlexGen A word of caution: there are no fail safes in regard to assigning incompatible functions to the same input/output The command for assigning a function is. WRITE IOFUNC <Choice> <Choice> <Choice> The first choice defines the input used for the function. It can be OFF, IN1, IN2, IN3, IN4, IN5, IN6, IN7 or IN8.

  • Page 48: Definition Of Start/ Stop In And Out Outputs For Generators

    C6200 FlexGen The output can be used as voltage control output instead of the analogue voltage setting output (terminal 37,38,39)). This function is available in both manual and automatic mode (regardless of connection of terminal 41). Example: Manual voltage control input programmed to IN3 (increase voltage) and IN4 (decrease voltage).

  • Page 49: Outputs For Over Current Alarm And Trip

    C6200 FlexGen WRITE IOFUNC OUT1 OUT2 Error output function is not applicable for this function. Therefore, the third choice will be ignored (it simply remains empty). 4.13.6 Outputs for over current alarm and trip Outputs for the over current alarm and trip can be programmed to any of the programmable outputs.

  • Page 50: Outputs For Over Voltage Alarm And Trip

    C6200 FlexGen 4.13.9 Outputs for over voltage alarm and trip Outputs for the over voltage alarm and trip can be programmed to any of the programmable outputs. In following example the over voltage trip is signaled on programmable output 1 and the over...

  • Page 51: Outputs For Excitation Loss Alarm And Trip

    C6200 FlexGen Program command Function Protection Output Alarm Output WRITE IOFUNC OUT1 OUT2 Error output function is not applicable for this function. Therefore, the third choice will be ignored (it simply remains empty). 4.13.13 Outputs for excitation loss alarm and trip Outputs for the excitation loss alarm and trip can be programmed to any of the programmable outputs.

  • Page 52: Output For Preferential Trip

    C6200 FlexGen In following example the vector shift trip is only monitored in case IN1 is connected to COM. Output 1 is programmed as alarm output for the vector shift trip: Program command Function Input Output WRITE IOFUNC OUT1 Error output function is not applicable for this function. Therefore, the third choice will be ignored (it simply remains empty).

  • Page 53: Indication Of 1St Standby Generator

    C6200 FlexGen Priority 3 → Input 7 connected to COM Priority 4 → Input 8 connected to COM Priority 5 → Inputs 5 and 8 connected to COM Priority 6 → Inputs 6 and 8 connected to COM Priority 7 → Inputs 7 and 8 connected to COM Etc.

  • Page 54: Low Capacity Alarm

    C6200 FlexGen WRITE IOFUNC HIGHLOADINDICATION OUT1 4.13.24 Low Capacity Alarm This is the output for the Load Demand > Plant capacity alarm. It activates in case the load demand of the installation increases above the sum of the capacities of all generators that are in Auto Mode and available for automatic load sharing.

  • Page 55: Frequency Control Disable Output

    C6200 FlexGen In case the generators are sometimes running in parallel with the grid and sometimes alone, it is required to activate and deactivate the load sharing scheme accordingly. This can be done either via RS485 or the programmable inputs.

  • Page 56: Total Stop

    C6200 FlexGen 4.13.31 TOTAL STOP The TOTALSTOP function can be used in order to stop the generator regardless of load condition, e.g. in case an emergency generator is to be stopped in order to change back to normal supply via black out (without synchronizing).

  • Page 57: Remote Control Of Synchronization

    C6200 FlexGen Example: The start command for frequency and voltage stabilization can be configured to use the same inputs and outputs. Program command Function Input Output Alarm WRITE IOFUNC FREQSTAB IN4 OUT4 Alarm WRITE IOFUNC VOLTSTAB IN4 OUT4 Alarm In above example the frequency and voltage stabilization will start after input 4 has been connected to COM.

  • Page 58: Remote Control Of Active And Reactive Load Ramp Up

    C6200 FlexGen output 1 for indicating that voltage matching has been completed. In case C6200 fails voltage matching, the common alarm relay will be triggered. 4.13.37 Remote control of active and reactive load ramp up Usually, C6200 ramps up active and reactive load as soon as the circuit breaker is closed. In case this is not wanted a start ramp up command can be configured.

  • Page 59: Function List

    C6200 FlexGen FUNCTION MODBUS The C6200 MODbus memory map can be downloaded from www.selco.com 4.13.40 Function List INx means any of the programmable inputs. OUTx means any of the programmable outputs. Error means a programmable output used as an error output.
  • Page 60 C6200 FlexGen and Alarm Output INx, OUTx, Frequency Deviation INx, OUTx, Vector Shift INx, OUTx, External Trip EXTTRIP INx, OUTx, OUTx, Frequency Stabilization FREQSTAB INx, OUTx, OUTx, Synchronizing SYNC INx, OUTx, OUTx, Active Load ramp up ACTRAMPUP INx, OUTx, OUTx,...
  • Page 61 C6200 FlexGen INx, Light Load Cancel LIGHTLOADCANCEL OUTx, Light Load Indication LIGHTLOADINDICATION OUTx, High Load indication HIGHLOADINDICATION Alarm in case Capacity < OUTx, LOWCAPACITY Load demand Replacement of a generator OUTx, INx, with Load transfer CAT2ALARM (category 2 alarm) Voltage and frequency ok...

  • Page 62: Analogue Outputs

    C6200 FlexGen 4.14 Analogue Outputs The analogue outputs are used like measurement converter outputs. Any of the C6200 measurements can be provided on these outputs as a voltage signal. The analogue outputs are configured with the following parameters. 4.14.1 Analogue Output 1 The first parameter to set is the measurement that should be connected to the output.
  • Page 63 C6200 FlexGen WRITE ANAOUT OUT2 VOLTMIN <value> WRITE ANAOUT OUT2 VOLTMAX <value> Revision: 20-10-2017 Page 63 of 73...

  • Page 64: Speed Control

    C6200 FlexGen 4.15 Speed Control Speed control can be done using either increase/decrease pulse signals or analogue output 1. The pulse signals are well suited for control of either a conventional governor or a motorized/electronic potentiometer through an external relay. The pulse outputs are open collector outputs.

  • Page 65: Current Range

    C6200 FlexGen 4.15.5 Current Range The current minimum and maximum references define the lower and upper limits of the current output signal. These parameters are only used when speed control is done by analogue output and when the analogue signal has been set to current. Resolution is 0.001 mA. The range is 0,000mA to 20,000mA.

  • Page 66: Voltage Control

    C6200 FlexGen 5 Voltage Control Voltage control can be done using either increase/decrease pulse signals or analogue output 2. The pulse signals are well suited for control of either a conventional automatic voltage regulator (AVR) or a motorized/electronic potentiometer. Alternatively, voltage control can be done by analogue output 2 using a voltage, current or PWM signal.

  • Page 67: Current Range

    C6200 FlexGen WRITE SYS VOLTCTRL ANAOUT VOLTMIN <Voltage> WRITE SYS VOLTCTRL ANAOUT VOLTMAX <Voltage> 5.1.5 Current Range The current minimum and maximum references define the lower and upper limits of the current output signal. These parameters are only used when voltage control is done by analogue output and when the analogue signal has been set to current.

  • Page 68: Generator Specification

    C6200 FlexGen 5.2 Generator specification The first thing to do is to configure the C6200 module to fit the generator. 5.2.1 Voltage The C6200 module must know the nominal voltage of the generator as well as the primary voltage. The nominal voltage is the nominal voltage that will be present on the VOLTAGE INPUTS plug-in connector of the module (actual voltage between L1-L2 terminals).

  • Page 69: Ct Primary Current

    C6200 FlexGen The default settings are done using a power source of 42 kVA with a primary phase-phase voltage of 400 V AC. In this case the power factor (PF) is set to 1.00. The calculations would be as follows.

  • Page 70: Rated Frequency

    C6200 FlexGen WRITE SYS CTPRIMCUR <CT primary rated current> The CT primary current is simply used to scale the measured current to the actual current. 5.2.4 Rated Frequency The rated frequency must be set in order for the C6200 module to know the 100% reference for the frequency dependent trip functions (e.g.

  • Page 71: Restoring The Factory Default Configuration

    C6200 FlexGen 5.3 Restoring the factory default configuration The factory default configuration can be restored at any time by issuing the command WRITE SYS SETUPDEFAULT <Choice>. The default configuration is restored when power to the module has been turned off and on again.

  • Page 72: Rs485

    C6200 FlexGen 5.8 RS485 The RS485 communication interface can be configured with regard to MODBUS slave address, baud rate, data bit, parity and stop bits. It is important to ensure that the address is unique on the bus and that the remaining parameters are set according to specifications.

  • Page 73: Revision: 20-10-2017

    C6200 FlexGen 6 Service configuration This section describes the configuration of the service parameters. These parameters are only accessible with a separate service password. 6.1 Read Config When in Service mode this command will only show the service configuration parameters (service interval, duty hour, service confirm and service password).

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