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ALCL-14-5高壓變頻器主板
欠電壓（a）如果通過以下方式檢測到電壓突然下降，則可以停止電機運行利用SMC Flex控制器的欠壓保護。SMC Flex控制器提供可調(diào)節(jié)的欠壓跳閘設(shè)置
編程電機電壓的0…99%。您可以調(diào)整跳閘延遲時間0…99秒。
您可以對報警（故障前）指示級別進行編程，以指示裝置何時正在接近斷層。顯示報警修改信息通過LCD、IM、通信（如適用）和報警觸點關(guān)閉。過電壓（a）
如果檢測到電壓突然升高利用SMC Flex控制器的過電壓保護。
SMC Flex控制器提供可調(diào)過電壓跳閘設(shè)置
編程電機電壓的0…199%。跳閘延遲時間可以調(diào)整0…99秒。
您可以對報警（故障前）指示級別進行編程，以指示裝置何時正在接近斷層。顯示報警修改信息通過LCD、HIM、通信（如適用）和報警觸點關(guān)閉。
不平衡（a）SMC Flex控制器可以檢測線電壓的不平衡。你可以停下來如果不平衡量大于所需范圍，則電運行。SMC Flex控制器提供0…25%的可調(diào)不平衡設(shè)置線路電壓。
跳閘延遲時間可在0至99秒之間調(diào)整。
您可以對報警（故障前）指示級別進行編程，以指示裝置正在接近斷層。顯示報警修改信息通過LCD、HIM、通信（如適用）和報警觸點關(guān)閉失速保護和堵塞檢測
如果出現(xiàn)以下情況，電機可能會出現(xiàn)堵轉(zhuǎn)電流并產(chǎn)生高扭矩水平出現(xiàn)失速或堵塞。這些情況可能導致繞組絕緣或連接負載的機械損壞。這個SMC Flex控制器為增強了電機和系統(tǒng)保護。堵塞水平（占電機FLC的百分比）可配置報警和電機關(guān)閉（故障）。此外失速和堵塞狀態(tài)都允許您在啟動報警之前設(shè)置延遲時間（僅限堵塞）或電機關(guān)閉（故障）。
失速保護可由用戶在0.0…10.0秒之間調(diào)整（除了斜坡時間編程）。
圖18-失速保護
堵塞檢測可以確定堵塞程度（高達電機FLC的1000%額定值）和延遲時間（高達99.0秒），以實現(xiàn)應用靈活性。圖19-堵塞檢測（a）（b）您可以對報警（故障前）指示級別進行編程，以指示裝置何時正在接近斷層。顯示報警修改信息通過LCD、HIM、通信（如適用）和報警觸點關(guān)閉。
Undervoltage(a)
You can halt motor operation if a sudden drop in voltage is detected by utilizing the undervoltage protection of the SMC Flex controller. The SMC Flex controller provides an adjustable undervoltage trip setting from 0…99% of the programmed motor voltage. You can adjust the trip delay time from 0…99 seconds. You can program an alarm (pre-fault) indication level to indicate when the unit is getting close to faulting. The alarm modification information is displayed through the LCD, HIM, Communication (if applicable) and alarm contact closing. Overvoltage(a) You can halt motor operation if a sudden increase in voltage is detected by utilizing the overvoltage protection of the SMC Flex controller. The SMC Flex controller provides an adjustable overvoltage trip setting from 0…199% of the programmed motor voltage. Trip delay time can be adjusted from 0…99 seconds. You can program an alarm (pre-fault) indication level to indicate when the unit is getting close to faulting. The alarm modification information is displayed through the LCD, HIM, Communication (if applicable) and alarm contact closing. Unbalance(a) The SMC Flex controller can detect an unbalance in line voltages. You can halt motor operation if the unbalance is greater than the desired range. The SMC Flex controller provides an adjustable unbalance setting from 0…25% of the line voltages. Trip delay time can be adjusted from 0…99 seconds. You can program an alarm (pre-fault) indication level to indicate that the unit is getting close to faulting. The alarm modification information is displayed through the LCD, HIM, Communication (if applicable) and alarm contact closing
Stall Protection and Jam Detection
Motors can experience locked-rotor currents and develop high torque levels if a stall or a jam occurs. These conditions can result in breakdown of the winding insulation or mechanical damage to the connected load. The SMC Flex controller provides both stall protection and jam detection for enhanced motor and system protection. A jam level (as a percent of motor FLC) is configurable for both an alarm and motor shutdown (fault). In addition, both stall and jam conditions let you set a delay time before initiating an alarm (jam only) or motor shutdown (fault). Stall protection is user adjustable from 0.0…10.0 seconds (in addition to the ramp time programmed). Figure 18 - Stall Protection Jam detection lets you determine the jam level (up to 1000% of the motor’s FLC rating) and the delay time (up to 99.0 seconds) for application flexibility. Figure 19 - Jam Detection(a) (b) You can program an alarm (pre-fault) indication level to indicate when the unit is getting close to faulting. The alarm modification information is displayed through the LCD, HIM, Communication (if applicable) and alarm contact closing.
