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Reliance 803456-21T现场电源模块
以下故障排除指南有助于隔离控制箱、致动器、设备接线或其他地方的故障。只有当控制测试的完整设施可用时,才建议进行超出此级别的故障排除。错误的电压可能会损坏控制器。更换控制器时,请检查电源、电池等的电压是否正确。故障排除程序表5-1是隔离系统问题的一般指南。本指南假定系统接线、焊接连接、开关和继电器触点以及输入和输出连接正确且工作状态良好。按照指示的顺序进行检查。各种系统检查都假定先前的检查已正确完成。在启动发动机、涡轮机或其他类型的原动机时,做好紧急停机的准备,以防止失控或超速,从而可能造成人身伤害、生命损失或财产损失。如果控制端子20(+)和21(-)处有电压输出,但致动器不移动,则应检查致动器接线是否开路或短路。对于EG3P执行器,请记住配对插头的端子C和D应跨接。在执行器处进行电阻检查。伍德沃德致动器上的线圈电阻约为35Ω. (在T20和T21的导线断开的情况下读取。)启动燃油限制设置过低。顺时针转动起动燃油限制,直到原动机起动。致动器或连杆。检查执行器和连杆的安装和操作是否正确。问题可能是供油、旋转方向、排水不足。连杆、执行器部件磨损或调整不当。
速度传感器信号未清除故障速度信号电路。
检查接线是否正确连接。检查护罩是否正确安装。转速传感器间距不正确,在盘车期间,检查端子28和29处是否至少为1.0 Vac。如果低于1.0 Vac,则磁性捡拾器可能与齿轮的距离过远。确保捡拾器末端没有金属碎屑。如果不存在电压,则电磁拾波器可能断路或短路。在导线与控制装置断开的情况下进行电阻检查。应该在100到300之间Ω. 通过将端子16(或高压控制装置上的端子0)连接到端子18,可以禁用故障速度信号电路。控制装置可能是错误的速度范围。对照控制部件号检查速度传感器频率。速度设置可能低于盘车速度。控制装置应设置为额定速度。顺时针增加额定速度设置。拆下端子20和21的电线,检查致动器导线是否短路或接地。停止原动机。关闭端子18上的开关,将端子23短接至24。检查端子20和21处的正向控制是否为18至22伏,反向控制是否为0至1伏。检查端子28和29处是否至少有1 Vrms,以及最小额定转速频率范围的至少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 Ω. (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 Ω. 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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PLC可编程控制器模块,DCS卡件,ESD系统卡件,振动监测系统卡件,汽轮机控制系统模块,燃气发电机备件等,优势品牌:Allen Bradley、BentlyNevada、ABB、Emerson Ovation、Honeywell DCS、Rockwell ICS Triplex、FOXBORO、Schneider PLC、GE Fanuc、Motorola、HIMA、TRICONEX、Prosoft等各种进口工业零部件、欧美进口模块。
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