IS200AVGBG1A工控模块卡件,DCS模块卡件
这种增加时间的例外情况是短路、接地故障和差动元件，这些元件将按照规范跳闸。如果给定电厂的相位旋转顺序是ACB而不是标准ABC，则可使用系统相位顺序设定值来适应此情况。该设定值允许469正确计算相位反转、负序和功率量。SPEED2 PHASE SEQUENCE（速度2相位序列）可编程为适应速度2时的反向电机旋转。4.3.4串行通信控制如果启用，则可通过三个469通信端口中的任何一个启动和停止电机。有关命令格式，请参阅第6章：通信。当发出停止命令时，R1跳闸继电器激活1秒，以完成断路器应用的跳闸线圈电路，或断开接触器应用的接触线圈电路。当发出启动命令时，指定用于启动控制的辅助继电器激活1秒，以完成断路器应用的闭合线圈电路或接触器应用的启动控制电路。接触器密封触点将用于维护电路。要通过通信发出启动或停止命令，请参见第6-9页第6.2.4节：功能代码05：执行操作。❙ 电力系统❙ [输入]了解更多标称系统频率：60 Hz范围：50 Hz，60 Hz，可变系统相位顺序：ABC范围：ABC，ACB速度2相位顺序：ABC范围：ABC❙ 串行通信控制❙ [输入]更多串行通信控制：关闭范围：打开、关闭分配启动控制继电器：辅助2范围：辅助2、辅助2和辅助3，辅助设备3进入退出消息退出消息退出进入退出消息4-14 469电机管理继电器GE电源管理4.3 S2系统设置4设定点编程4 4.3.5降低电压469可以控制降低电压启动器从降低电压到满电压的过渡。该转换可能基于“仅限电流”、“电流和计时器”或“电流或计时器”（以先到者为准）。当469测量到无电机电流向某个电机电流值的转变时，假设会发生“启动”（通常电流会迅速上升到超过FLA的值，例如3×FLA）。此时，REDUCED VOLTAGE START TIMER（降低电压启动定时器）用编程值（秒）初始化。•如果选择“仅限电流”，当电机电流低于用户编程的转换水平时，将通过激活指定的输出继电器1秒来启动转换。如果计时器在转换启动之前到期，则将发生不完整顺序跳闸，激活指定的跳闸继电器。•如果选择“电流或定时器”，当电机电流低于用户编程的转换水平时，将通过激活指定的输出继电器1秒来启动转换。如果计时器在转换启动之前到期，则无论如何，转换都将启动。•如果选择了“电流和定时器”，当电机电流低于用户编程的转换水平且定时器到期时，将通过激活指定的输出继电器1秒来启动转换。如果计时器在电流低于过渡电平之前到期，则将发生不完整顺序跳闸，激活指定的跳闸继电器。图4-1：降压启动接触器控制电路❙ 降低的电压❙ [ENTER]更多降低电压启动：关闭范围：打开，关闭分配控制继电器：辅助3范围：辅助2，辅助2和辅助3，辅助3转换开启：仅限电流范围：仅限，电流或定时器，电流和定时器分配跳闸继电器：跳闸范围：跳闸，跳闸和辅助2，跳闸和辅2和辅3，跳闸和辅机3降低电压启动电平：100%FLA范围：25至300%，步骤：1降低电压启动The exceptions to this increased time are the short circuit, ground fault, and differential elements which will trip as per specification. If the sequence of phase rotation for a given plant is ACB rather than the standard ABC, the SYSTEM PHASE SEQUENCE setpoint may be used to accommodate this. This setpoint allows the 469 to properly calculate phase reversal, negative sequence, and power quantities. The SPEED2 PHASE SEQUENCE can be programmed to accommodate the reversed motor rotation at Speed2. 4.3.4 SERIAL COMMUNICATION CONTROL If enabled, motor starting and stopping is possible via any of the three 469 communication ports. Refer to Chapter 6: COMMUNICATIONS for command formats. When a stop command is issued, the R1 TRIP relay is activated for 1 second to complete the trip coil circuit for a breaker application or break the contact coil circuit for a contactor application. When a start command is issued, the auxiliary relay assigned for starting control is activated for 1 second to complete the close coil circuit for a breaker application or complete the start control circuit for a contactor application. A contactor sealing contact would be used to maintain the circuit. To issue a start or stop command via communications see Section 6.2.4: FUNCTION CODE 05: EXECUTE OPERATION on page 6–9. ❙ POWER SYSTEM ❙ [ENTER] for more NOMINAL SYSTEM FREQUENCY: 60 Hz Range: 50 Hz, 60 Hz, Variable SYSTEM PHASE SEQUENCE: ABC Range: ABC, ACB SPEED2 PHASE SEQUENCE: ABC Range: ABC, ACB Seen only if 2-Speed Motor Protection is enabled ❙ SERIAL COM. CONTROL ❙ [ENTER] for more SERIAL COMMUNICATION CONTROL: Off Range: On, Off ASSIGN START CONTROL RELAYS: Auxiliary2 Range: Auxiliary2, Aux2 & Aux3, Auxiliary3 ENTER ESCAPE ð ð MESSAGE ESCAPE MESSAGE ESCAPE ENTER ESCAPE ð ð MESSAGE ESCAPE 4-14 469 Motor Management Relay GE Power Management 4.3 S2 SYSTEM SETUP 4 SETPOINT PROGRAMMING 4 4.3.5 REDUCED VOLTAGE The 469 can control the transition of a reduced voltage starter from reduced to full voltage. That transition may be based on "Current Only", "Current and Timer", or "Current or Timer" (whichever comes first). When the 469 measures the transition of no motor current to some value of motor current, a 'Start' is assumed to be occurring (typically current will rise quickly to a value in excess of FLA, e.g. 3 × FLA). At this point, the REDUCED VOLTAGE START TIMER is initialized with the programmed value in seconds. • If "Current Only" is selected, when the motor current falls below the user's programmed Transition Level, transition will be initiated by activating the assigned output relay for 1 second. If the timer expires before that transition is initiated, an Incomplete Sequence Trip will occur activating the assigned trip relay(s). • If "Current or Timer" is selected, when the motor current falls below the user's programmed Transition Level, transition will be initiated by activating the assigned output relay for 1 second. If the timer expires before that transition is initiated, the transition will be initiated regardless. • If "Current and Timer" is selected, when the motor current falls below the user's programmed Transition Level and the timer expires, transition will be initiated by activating the assigned output relay for 1 second. If the timer expires before current falls below the Transition Level, an Incomplete Sequence Trip will occur activating the assigned trip relay(s). Figure 4–1: REDUCED VOLTAGE START CONTACTOR CONTROL CIRCUIT ❙ REDUCED VOLTAGE ❙ [ENTER] for more REDUCED VOLTAGE STARTING: Off Range: On, Off ASSIGN CONTROL RELAYS: Auxiliary3 Range: Auxilary2, Aux2 & Aux3, Auxiliary3 TRANSITION ON: Current Only Range: Current Only, Current or Timer, Current and Timer ASSIGN TRIP RELAYS: Trip Range: Trip, Trip & Aux2, Trip & Aux2 & Aux3, Trip & Aux3 REDUCED VOLTAGE START LEVEL: 100% FLA Range: 25 to 300%, step: 1 REDUCED VOLTAGE START
