ICS TRIPLEX 9833脈沖輸入卡件
跳閘，469顯示默認(rèn)為該消息。所有跳閘功能都會自動記錄，并在發(fā)生時標(biāo)記日期和時間。此外，所有行程都作為統(tǒng)計數(shù)據(jù)進行統(tǒng)計和記錄，以便確定任何長期趨勢。?報警：469報警功能可用于操作R4報警、R3輔助和R2輔助三個輸出繼電器的任意組合。當(dāng)報警激活時，當(dāng)輸出繼電器工作時，469面板上的相應(yīng)LED（指示燈）將點亮。每個報警功能可編程為鎖定或解鎖。鎖定報警功能激活后，必須按下重置鍵以重置該報警。如果導(dǎo)致報警的條件仍然存在（例如熱RTD），則報警繼電器將不會重置，直到該條件不再存在。另一方面，如果未鎖定報警功能激活，則一旦導(dǎo)致報警的條件停止，該報警將自動復(fù)位（以及相關(guān)的輸出繼電器）。一旦發(fā)生警報，警報消息就會更新以反映警報，469顯示默認(rèn)為該消息。由于可能不希望將所有報警記錄為事件，因此可以將每個報警功能編程為記錄為事件或不記錄為事件。如果報警被編程為記錄為事件，當(dāng)其激活時，將自動記錄為日期和時間戳事件。?阻止啟動：469阻止啟動根據(jù)某些邏輯或算法阻止或禁止電機啟動。塊啟動功能始終分配給塊啟動繼電器。除跳閘繼電器外，跳閘始終操作塊啟動繼電器。如果導(dǎo)致跳閘的條件仍然存在（例如熱RTD），或按下鍵時存在鎖定時間，則在該條件不再存在或鎖定時間到期之前，塊啟動繼電器不會復(fù)位。當(dāng)導(dǎo)致閉塞的條件停止時，閉塞功能總是解鎖并立即復(fù)位。除了在跳閘時激活外，一旦電機停止，塊也可能激活。有幾個功能可以這樣操作：啟動/小時、啟動間隔時間、啟動抑制、重啟塊和469未編程。當(dāng)塊變?yōu)榛顒訒r，塊消息會更新以反映該塊（如果需要，完成鎖定時間），并且屏幕默認(rèn)為該消息。塊通常不作為事件記錄。但是，如果在塊激活時檢測到電機啟動或啟動嘗試，則會自動記錄為日期和時間戳事件。如果有人在接線端子之間短路并超越469保護以啟動電機，則可能會出現(xiàn)這種情況。4.1.3繼電器分配實踐有六個輸出繼電器。其中五個繼電器始終是非故障安全的，另一個（服務(wù)）是故障安全的并專用于闡明內(nèi)部469個故障（這些故障包括設(shè)定點損壞、硬件組件故障、控制電源損失等）。其中一個輸出繼電器專用于塊啟動繼電器；它專門用于阻止電機啟動的功能。其余四個繼電器可根據(jù)需要針對不同類型的功能進行編程。其中一個繼電器R1跳閘擬用作主跳閘繼電器。另一個繼電器R4報警將用作主報警繼電器。左側(cè)的兩個繼電器R2輔助和R3輔助用于特殊要求。當(dāng)將特征分配給R2和R3時，最好盡早決定需要什么，因為可能分配的特征可能會沖突。例如
trip and the 469 display defaults to that message. All trip features are automatically logged and date and time stamped as they occur. In addition, all trips are counted and logged as statistics such that any long term trends may be identified. ? ALARMS: A 469 alarm feature may be assigned to operate any combination of three output relays, R4 Alarm, R3 Auxiliary, and R2 Auxiliary. When an Alarm becomes active, the appropriate LED (indicator) on the 469 faceplate will illuminate when an output relay(s) has operated. Each alarm feature may be programmed as latched or unlatched. Once a latched alarm feature becomes active, the reset key must be pressed to reset that alarm. If the condition that has caused the alarm is still present (e.g. hot RTD) the Alarm relay(s) will not reset until the condition is no longer present. If on the other hand, an unlatched alarm feature becomes active, that alarm will reset itself (and associated output relay(s)) as soon as the condition that caused the alarm ceases. As soon as an alarm occurs, the alarms messages are updated to reflect the alarm and the 469 display defaults to that message. Since it may not be desirable to log all alarms as events, each alarm feature may be programmed to log as an event or not. If an alarm is programmed to log as an event, when it becomes active, it is automatically logged as a date and time stamped event. ? BLOCK START: A 469 Block Start prevents or inhibits the start of the motor based on some logic or algorithm. The Block Start feature is always assigned to the Block Start relay. In addition to the Trip relay(s), a trip always operates the Block Start relay. If the condition that has caused the trip is still present (e.g. hot RTD), or there is a lockout time when the key is pressed, the Block Start relay will not reset until the condition is no longer present or the lockout time has expired. Blocking features are always unlatched and reset immediately when conditions that caused the block cease. In addition to becoming active in conjunction with trips, a block may become active once the motor stops. There are several features that operate as such: Starts/Hour, Time Between Starts, Start Inhibit, Restart Block, and 469 Not Programmed. Block messages are updated to reflect the block when it becomes active (complete with lockout time if required) and the screen defaults to that message. Blocks are normally not logged as events. If however, a motor start or start attempt is detected when a block is active, it is automatically logged as a date and time stamped event. This scenario might occur if someone shorts across the block terminals and overrides the 469 protection to start the motor. 4.1.3 RELAY ASSIGNMENT PRACTICES There are six output relays. Five of the relays are always non-failsafe, the other (Service) is failsafe and dedicated to enunciate internal 469 faults (these faults include Setpoint Corruption, failed hardware components, loss of control power, etc.). One of the output relays is dedicated as the Block Start relay; it is dedicated to features that are intended to block motor starting. The four remaining relays may be programmed for different types of features depending on what is required. One of the relays, R1 Trip, is intended to be used as the main trip relay. Another relay, R4 Alarm, is intended to be used as the main alarm relay. The two relays that are left, R2 Auxiliary and R3 Auxiliary, are intended for special requirements. When assigning features to R2 and R3, it is a good idea to decide early on what is required since features that may be assigned may conflict. For example,
