IS200AVGAG1A工业自动化卡件

.（如热RTD）仍会导致跳闸。因此，当端子短路时，跳闸和闭锁输出继电器将保持在正常非操作状态。如果发生真正的紧急情况，紧急重启端子应保持短路，直到紧急情况结束。此外，当紧急重启端子短路时，维修警报消息指示任何激活的跳闸或阻塞。顾名思义，该功能只能在紧急情况下使用，否则会破坏继电器的目的，即保护电机。任何从打开到关闭或从关闭到打开的紧急重启输入转换都会记录为事件。4.4.5远程重置短路端子D18和D23重置任何跳闸或锁定报警，前提是导致报警或跳闸的条件不再存在。如果有锁定时间，块启动继电器将不会复位，直到锁定时间到期。GE Power Management 469电机管理继电器4-17 4设定值编程4.4 S3数字输入4 4.4.6启动器状态所有电机都需要此输入。当相电流低于继电器可测量的水平（CT主电流的5%）时，469确定电机已停止。监控断路器或接触器的辅助触点可防止继电器在空载电机加载时检测到额外启动，或在空载电机启动并以低于5%CT额定一次电流运行后发出闭锁启动。一旦选择了“起动器辅助A”，将监测端子D16和D23以检测断路器或接触器的状态，断开表示断路器或触点断开，短路表示断路器和接触器闭合。然后，469将确定电机已从“运行”过渡到“停止”，仅当测量电流小于5%CT比且“a”触点断开时。一旦选择“起动器辅助B”，将监测端子D16和D23，以检测断路器或接触器的状态，断开表示断路器或触点闭合，短路表示断路器和接触器断开。然后，469将确定只有在测量电流小于5%CT比且“b”触点闭合时，电机才从“运行”过渡到“停止”。4.4.7可分配数字输入有四个用户可分配的数字输入，可配置为多个不同的功能，或关闭。一旦选择了一个功能，随后的任何消息都可用于设置相关的操作参数。每个功能只能选择一次。通过将D19至D22（分别）与D23短路来激活可分配输入1至4。在S2系统设置\电流传感中启用双速电机保护。如果启用双速电机功能，则ASSIGNABLE INPUT（可分配输入）4专用于双速电机监视器，端子D22和D23用于触点闭合。触点闭合表示电机处于速度2或高速。如果输入打开，则表示电机处于速度1。这允许469确定在任何给定时间点应激活哪些设定点。❙ 起动机状态❙ [ENTER]了解更多起动机状态开关：起动机辅助A范围：起动机辅助B❙ 可分配输入1❙ [ENTER]更多输入1功能：关闭范围：关闭，远程报警，(such as a hot RTD) will still cause a trip. Therefore, while the terminals are shorted, the Trip and Block output relays will remain in their normal non-operated state. In the event of a real emergency, the Emergency Restart terminals should remain shorted until the emergency is over. Also, while the Emergency Restart terminals are shorted, a Service Alarm message indicates any trips or blocks that are active. As the name implies, this feature should only be used in an emergency – using it otherwise defeats the purpose of the relay, namely, protecting the motor. Any Emergency Restart input transition from open to closed or closed to open is logged as an event. 4.4.5 REMOTE RESET Shorting terminals D18 and D23 resets any trips or latched alarms provided that the condition that caused the alarm or trip is no longer present. If there is a lockout time the Block Start relay will not reset until the lockout time has expired. GE Power Management 469 Motor Management Relay 4-17 4 SETPOINT PROGRAMMING 4.4 S3 DIGITAL INPUTS 4 4.4.6 STARTER STATUS This input is necessary for all motors. The 469 determines that a motor has stopped when the phase current falls below the level that the relay can measure (5% of CT primary). Monitoring an auxiliary contact from the breaker or contactor prevents the relay from detecting additional starts when an unloaded motor is loaded, or issuing a block start after an unloaded motor is started and running at less than 5% CT rated primary current. Once "Starter Auxiliary A" is chosen, terminals D16 and D23 are monitored to detect the state of the breaker or contactor, open signifying the breaker or contactor is open and shorted signifying the breaker or contactor is closed. The 469 will then determine that a motor has made the transition from 'running' to 'stopped' only when the measured current is less than 5% CT ratio and the 'a' contact is open. Once "Starter Auxiliary B" is chosen, the terminals D16 and D23 will be monitored to detect the state of the breaker or contactor, open signifying the breaker or contactor is closed and shorted signifying the breaker or contactor is open. The 469 will then determine that a motor has made the transition from 'running' to 'stopped' only when the measured current is less than 5% CT ratio and the 'b' contact is closed. 4.4.7 ASSIGNABLE DIGITAL INPUTS There are four user assignable digital inputs configurable to a number of different functions, or turned Off. Once a function is chosen, any messages that follow may be used to set pertinent parameters for operation. Each function may only be chosen once. Assignable Inputs 1 to 4 are activated by shorting D19 to D22 (respectively) with D23. Two-speed motor protection is enabled in S2 SYSTEM SETUP\CURRENT SENSING. If the Two-Speed Motor feature is enabled, ASSIGNABLE INPUT 4 is dedicated as the Two-Speed Motor Monitor and terminals D22 and D23 are monitored for a contact closure. Closure of the contact signifies that the motor is in Speed 2 or High Speed. If the input is open, it signifies that the motor is in Speed 1. This allows the 469 to determine which setpoints should be active at any given point in time. ❙ STARTER STATUS ❙ [ENTER] for more STARTER STATUS SW: Starter Auxiliary A Range: Starter Auxiliary A, Starter Auxiliary B ❙ ASSIGNABLE INPUT 1 ❙ [ENTER] for more INPUT 1 FUNCTION: Off Range: Off, Remote Alarm,