描述
ABB DI821 3BSE008550R1是一款数字输入模块，属于ABB S800 I/O系列，以下是其详细信息：
基本参数
通道数量：8通道。
输入电压范围：交流“0”状态为0-50V AC，“1”状态为164-264V AC；直流“0”状态为0-40V DC，“1”状态为175-275V DC。
输入电流：230V AC时为11mA，220V DC时为1.6mA。
输入阻抗：交流21kΩ，直流134kΩ。
隔离情况：通道间单独隔离。
额定绝缘电压：250V。
介电测试电压：2000V AC。
功耗：典型值2.8W。
工作温度范围：0-55℃（认证温度范围为5-55℃）。
存储温度范围：-40-70℃。
防护等级：IP20。
重量：0.18kg。
功能特点
电压监控：通道1可作为通道2-4的电压监控输入，通道8可作为通道5-7的电压监控输入，当监控通道电压消失时，会激活错误输入并点亮警告LED，错误信号可从模块总线读取。
状态指示：每个输入通道都有LED指示灯，用于显示输入状态。
信号滤波：具备数字滤波功能，滤波时间可在2、4、8、16ms中选择，还具有模拟滤波器，开/关延迟为5/28ms。
保护功能：每个输入通道都包含限流组件、EMC保护组件，可防止过流和电磁干扰。
The ABB DI821 3BSE008550R1 is a digital input module that belongs to the ABB S800 I/O series.The following are its details:
Basic Parameters
Number of channels:8.
Input voltage range:AC”0″state:0-50V AC,”1″state:164-264V AC;DC”0″state:0-40V DC,”1″state:175-275V DC.
Input current:11mA at 230V AC,1.6mA at 220V DC.
Input impedance:21kΩAC,134kΩDC.
Isolation:Individually isolated between channels.
Rated insulation voltage:250V.
Dielectric test voltage:2000V AC.
Power consumption:Typical 2.8W.
Operating Temperature Range:0-55°C(Certified Temperature Range:5-55°C).
Storage Temperature Range:-40-70°C.
Protection Rating:IP20.
Weight:0.18kg.
Features
Voltage Monitoring:Channel 1 can be used as a voltage monitoring input for channels 2-4,and channel 8 can be used as a voltage monitoring input for channels 5-7.When the voltage on the monitored channel drops out,the error input activates and the warning LED illuminates.The error signal can be read from the module bus.
Status Indication:Each input channel has an LED indicator to display the input status.
Signal Filtering:Digital filtering is available with selectable filter times of 2,4,8,and 16ms.Analog filters are also available with on/off delays of 5/28ms.
Protection:Each input channel includes current limiting and EMC protection components to prevent overcurrent and electromagnetic interference.
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