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ALCL-14-5高压变频器主板
欠电压（a）如果通过以下方式检测到电压突然下降，则可以停止电机运行利用SMC Flex控制器的欠压保护。SMC Flex控制器提供可调节的欠压跳闸设置
编程电机电压的0…99%。您可以调整跳闸延迟时间0…99秒。
您可以对报警（故障前）指示级别进行编程，以指示装置何时正在接近断层。显示报警修改信息通过LCD、IM、通信（如适用）和报警触点关闭。过电压（a）
如果检测到电压突然升高利用SMC Flex控制器的过电压保护。
SMC Flex控制器提供可调过电压跳闸设置
编程电机电压的0…199%。跳闸延迟时间可以调整0…99秒。
您可以对报警（故障前）指示级别进行编程，以指示装置何时正在接近断层。显示报警修改信息通过LCD、HIM、通信（如适用）和报警触点关闭。
不平衡（a）SMC Flex控制器可以检测线电压的不平衡。你可以停下来如果不平衡量大于所需范围，则电运行。SMC Flex控制器提供0…25%的可调不平衡设置线路电压。
跳闸延迟时间可在0至99秒之间调整。
您可以对报警（故障前）指示级别进行编程，以指示装置正在接近断层。显示报警修改信息通过LCD、HIM、通信（如适用）和报警触点关闭失速保护和堵塞检测
如果出现以下情况，电机可能会出现堵转电流并产生高扭矩水平出现失速或堵塞。这些情况可能导致绕组绝缘或连接负载的机械损坏。这个SMC Flex控制器为增强了电机和系统保护。堵塞水平（占电机FLC的百分比）可配置报警和电机关闭（故障）。此外失速和堵塞状态都允许您在启动报警之前设置延迟时间（仅限堵塞）或电机关闭（故障）。
失速保护可由用户在0.0…10.0秒之间调整（除了斜坡时间编程）。
图18-失速保护
堵塞检测可以确定堵塞程度（高达电机FLC的1000%额定值）和延迟时间（高达99.0秒），以实现应用灵活性。图19-堵塞检测（a）（b）您可以对报警（故障前）指示级别进行编程，以指示装置何时正在接近断层。显示报警修改信息通过LCD、HIM、通信（如适用）和报警触点关闭。
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.
