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Reliance 803456-21T現場電源模塊
以下故障排除指南有助于隔離控制箱、致動器、設備接線或其他地方的故障。只有當控制測試的完整設施可用時，才建議進行超出此級別的故障排除。錯誤的電壓可能會損壞控制器。更換控制器時，請檢查電源、電池等的電壓是否正確。故障排除程序表5-1是隔離系統問題的一般指南。本指南假定系統接線、焊接連接、開關和繼電器觸點以及輸入和輸出連接正確且工作狀態良好。按照指示的順序進行檢查。各種系統檢查都假定先前的檢查已正確完成。在啟動發動機、渦輪機或其他類型的原動機時，做好緊急停機的準備，以防止失控或超速，從而可能造成人身傷害、生命損失或財產損失。如果控制端子20（+）和21（-）處有電壓輸出，但致動器不移動，則應檢查致動器接線是否開路或短路。對于EG3P執行器，請記住配對插頭的端子C和D應跨接。在執行器處進行電阻檢查。伍德沃德致動器上的線圈電阻約為35?. （在T20和T21的導線斷開的情況下讀取。）啟動燃油限制設置過低。順時針轉動起動燃油限制，直到原動機起動。致動器或連桿。檢查執行器和連桿的安裝和操作是否正確。問題可能是供油、旋轉方向、排水不足。連桿、執行器部件磨損或調整不當。
速度傳感器信號未清除故障速度信號電路。
檢查接線是否正確連接。檢查護罩是否正確安裝。轉速傳感器間距不正確，在盤車期間，檢查端子28和29處是否至少為1.0 Vac。如果低于1.0 Vac，則磁性撿拾器可能與齒輪的距離過遠。確保撿拾器末端沒有金屬碎屑。如果不存在電壓，則電磁拾波器可能斷路或短路。在導線與控制裝置斷開的情況下進行電阻檢查。應該在100到300之間?. 通過將端子16（或高壓控制裝置上的端子0）連接到端子18，可以禁用故障速度信號電路。控制裝置可能是錯誤的速度范圍。對照控制部件號檢查速度傳感器頻率。速度設置可能低于盤車速度。控制裝置應設置為額定速度。順時針增加額定速度設置。拆下端子20和21的電線，檢查致動器導線是否短路或接地。停止原動機。關閉端子18上的開關，將端子23短接至24。檢查端子20和21處的正向控制是否為18至22伏，反向控制是否為0至1伏。檢查端子28和29處是否至少有1 Vrms，以及最小額定轉速頻率范圍的至少5%。
The following troubleshooting guide
is an aid in isolating trouble to the control box, actuator, plant wiring, or elsewhere. Troubleshooting beyond this level is recommended ONLY when a complete facility for control testing is available. The control can be damaged with the wrong voltage. When replacing a control, check the power supply, battery, etc., for the correct voltage. Troubleshooting Procedure Table 5-1 is a general guide for isolating system problems. This guide assumes that the system wiring, soldering connections, switch and relay contacts, and input and output connections are correct and in good working order. Make the checks in the order indicated. Various system checks assume that the prior checks have been properly done. Be prepared to make an emergency shutdown when starting the engine, turbine, or other type of prime mover, to protect against runaway or overspeed with possible personal injury, loss of life, or property damage.If there is a voltage output at control terminals 20 (+) and 21 (–), but the actuator does not move, the wiring to the actuator should be checked for opens or shorts. With the EG3P actuator, remember that terminals C and D of the mating plug should be jumpered. Make resistance checks at the actuator. Coil resistance on Woodward actuators is approximately 35 ?. (Read with leads at T20 and T21 disconnected.) Start fuel limit set too low. Turn start fuel limit clockwise until prime mover starts. Actuator or Linkage. Check actuator and linkage for proper installation and operation. Problems may be oil supply, direction of rotation, insufficient drainage. linkage, worn actuator components, or improper adjustment.
Speed sensor signal not clearing failed speed signal circuit.
Check wiring for proper connection. Check shields for proper installation. Speed sensor not spaced properly—check for at least 1.0 Vac at terminals 28 and 29 during cranking. If less that 1.0 Vac, magnetic pickup may be spaced too far from gear. Make sure there are no metal chips on end of pickup. If no voltage is present, magnetic pickup may be open-circuited or shorted. Make resistance check with the leads disconnected from control. Should be about 100 to 300 ?. Failed speed-signal circuit may be disabled by connecting terminal 16 (or terminal 0 on high voltage controls) to terminal 18.Control may be the wrong speed range. Check speed sensor frequency versus control part number. Speed setting may be lower than cranking speed. Control should be set for rated speed. Increase RATED SPEED setting clockwise.Check for shorted or grounded actuator leads by removing wires to terminals 20 and 21. Stop prime mover. Close the switch on terminal 18, short terminal 23 to 24. Check for 18 to 22 volts at terminals 20 and 21 for forward acting controls, and 0 to 1 volt for reverse acting controls. Check for at least 1 Vrms at terminals 28 and 29, and at least 5% of the minimum rated speed frequency range.
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