モジュレーティング・アクチュエータの一般的な故障とトラブルシューティング

このガイドは、DCL 防爆シリーズ、耐候性シリーズ、クイックターンシリーズのモジュレーティングアクチュエータに適用されます。機種は以下の通りです：耐候性アクチュエータDCL-05、DCL-10、DCL-20、DCL-40、DCL-60、DCL-100、DCL-160、DCL-250防爆形アクチュエータ：DCL-Ex05,DCL-Ex10,DCL-Ex20,DCL-Ex40,DCL-Ex60クイックターンアクチュエータ：DCL-K05、DCL-K10、DCL-K20、DCL-K40、DCL-K100 よくある故障と故障の除外方法 故障 考えられる原因 故障の除外方法 起動時にアクチュエータが開閉しない 1. 配線が正しくない。2.電源が間違っている。3.SA が 1 または 3 位置に設定されていない。4.非常停止スイッチがオフになっている（非常停止機能付きアクチュエータの場合）。5.入力信号が範囲外である。6.全開/全閉が同じ位置に設定されている。1.配線をチェック [...].

ON-OFFアクチュエータの一般的な故障とトラブルシューティング

本ガイドは、DCL防爆シリーズ、標準シリーズ、クイックオープンシリーズのスイッチタイプアクチュエータに適用します。機種は以下の通りです：耐候性アクチュエータDCL-05、DCL-10、DCL-20、DCL-40、DCL-60、DCL-100、DCL-160、DCL-250防爆形アクチュエータ：DCL-Ex05,DCL-Ex10,DCL-Ex20,DCL-Ex40,DCL-Ex60クイックターンアクチュエータ：DCL-K05, DCL-K10, DCL-K20, DCL-K40, DCL-K100 よくある故障とトラブルシューティング方法 故障 考えられる原因 トラブルシューティング方法 起動時にアクチュエータが開閉しない。2.電源が間違っている。3.制御スイッチまたはリレーの不良。4.制御システムの不一致。5.複数のアクチュエータ、またはアクチュエータと他の装置の並列運転。1.アクチュエータの配線図と照らし合わせて、配線が正しいことを確認してください。2.電源出力電圧を確認してください。

DCL アクチュエータ Modbus アプリケーションノート

DCL actuators support the Modbus-RTU protocol. Referring to this application manual, you can connect DCL actuators to Modbus. Panel SF-LC/MB SF-ZC/MB 1. Interface Definition P1：220VAC NP2：220VAC LP3：4-20mA Input –P4：4-20mA Input+P5：4-20mA Output-P6：4-20mA Output+P7：RS485 AP8：RS485 B 2. Button Open: Used in setting mode. Press this button to open the actuator while release it to stop. Press Set and Open simultaneously to set the full open position. Shut: Used in setting mode. Press this button to Shut the actuator while release it to stop. Press Set and Open simultaneously to set the full shut position. Set: Used in setting mode. Combination use this button with others to set the parameters. 3. Switch SA: […]

アクチュエーターの種類と正しい選び方

Actuators can be classified based on their driving method into the following categories: 1. Electric Actuators Electric actuators use an electric motor as the power source, converting electrical energy into mechanical motion to drive the valve. Advantages: ✔ Adjustable speed✔ High positioning accuracy✔ Large torque output Disadvantages: ✖ Thermal effects of the motor may trigger heat protection in high-frequency regulation applications Best For: ✅ High-precision applications requiring strong controllability 2. Hydraulic Actuators Hydraulic actuators use hydraulic oil as the power source, converting hydraulic pressure into mechanical motion to drive the valve. Advantages: ✔ High load-bearing capacity Disadvantages: ✖ Poor controllability✖ Large and bulky system✖ Requires additional hydraulic stations and oil […]

How Humidity Reduces the Lifespan of Actuators (Electric Valves)?

Humidity is well known to cause damage to electronic components. One of the primary ways humidity reduces the lifespan of electric actuators is through ionic migration short circuits. 1. What is Ionic Migration Short Circuit? Ionic migration occurs when moisture and contaminants on a circuit board facilitate the movement of ions between conductors, leading to short circuits. The process follows these steps: 1️⃣ Presence of an electric field between two conductors on an insulator.2️⃣ Electrolytic reaction occurs at the anode, releasing metal ions.3️⃣ Ions migrate under the influence of the electric field toward the cathode.4️⃣ Once enough ions accumulate at the cathode, a conductive bridge forms, causing a short circuit. […]

What Does the S2 Duty Cycle Mean in Actuators (Electric Valves)?

Many people have questions about the S2 duty cycle in actuators or electric valves. What does it mean, and why is it defined this way? 1. The Origin of S1, S2, S3, and S6 Duty Cycles The S1, S2, S3, and S6 duty cycles originate from electric motor classifications, with a primary focus on thermal balance. The goal is to ensure that the motor does not overheat due to continuous operation. Definitions of Common Motor Duty Cycles: S1 (Continuous Duty Cycle): Operates at a constant load for a long enough period to reach thermal equilibrium. S2 (Short-Time Duty Cycle): Operates under a constant load for a set time, but not […]

DCLアクチュエータは高地でも使用可能か？

High-altitude environments present unique challenges that can impact the performance of DCL electric actuators. This report evaluates their usage at 3,000 meters above sea level. 1. How High Altitude Affects Electrical Products As altitude increases:✔ Air density and pressure decrease, leading to lower insulation strength and increased risk of electrical breakdown.✔ Cooling efficiency decreases, causing higher temperature rise in motors and electronics.✔ Lubricants evaporate faster, and gases or liquids are more likely to leak from sealed components.✔ Temperature drops, with large day-night fluctuations, affecting mechanical parts.✔ Lower humidity reduces insulation but increases brush wear in motors.✔ Stronger solar radiation accelerates material aging. Main Impact Areas Electrical insulation and temperature rise […]

電圧出力信号はなぜ特定の条件で発振するのか？

  1. Voltage Signal Transmission Path As shown in Figure 1, a voltage signal transmission system consists of three key components: Negative feedback voltage output circuit Signal transmission cable Includes parasitic capacitance (C1) and parasitic inductance (L1), which depend on cable length and wiring layout. Input signal acquisition circuit May include a low-pass filter (L2, C2). 2. Why Does Oscillation Occur? In a negative feedback voltage signal system, the input signal is calculated as: ∣Xi′∣=∣Xi∣−∣Xf∣|X_i’| = |X_i| – |X_f| However, if the feedback signal (|Xf|) is phase-shifted by 180°, the equation changes to: ∣Xi′∣=∣Xi∣+∣Xf∣|X_i’| = |X_i| + |X_f| This means that even if no input signal is applied (|Xi| = […]

位置発信器付きON-OFFアクチュエータの設定方法は？

1. Mechanical Installation 1. Mechanical Installation Refer to the “How to Install the Actuator onto the Valve” section to correctly install the actuator onto the valve and manually operate it to confirm proper functioning. Follow the guidelines in “How to Set the ON-OFF Electric Valve” to properly adjust the actuator’s electrical limits (close limit CLS and open limit OLS) and mechanical limits. Important Notes: Unless specified otherwise, the actuator’s stroke angle between the fully closed and fully open positions is typically 90° during factory debugging. The output current corresponds to 4mA when fully closed and 20mA when fully open. The position potentiometer has been calibrated during the valve matching process, […]

電動調節弁の設定方法

1. Installing the Actuator onto the Valve Follow the installation instructions in “How to Install the Actuator onto the Valve” to correctly install the actuator on the valve. Confirm normal operation by manually testing the valve movement. 2. Adjusting the Mechanical Limits for Fully Closed Position Use the handwheel to move the valve to the fully closed position. Ensure the mechanical limit stop does not touch the adjustment screw or housing. Loosen the scale plate locking screw, adjust the scale plate so that the pointer aligns with the 0 degree mark (SHUT position), and then tighten the locking screw. 3. Adjusting the Mechanical Limits for Fully Open Position Use the […]