罗克韦尔PLC模块1756-IF8H

罗克韦尔PLC模块1756-IF8H

罗克韦尔PLC模块1756-IF8H

Allen-Bradley 1756-F8H是属于ControlLogix系统的HART模拟模块。它需要一个36位弹簧夹RTB或可拆卸接线盒外壳，可以是1756-TBCH或1756-TBS6H，并与HART5、6和7兼容。8个差分电压或电流输入可用于该模块，具有每个模块一个HART调制解调器。

该1756-IF8H输入模块接收来自过程值变送器的信号，然后将其转换为相应的测量值，用于Logix控制器。1756年的IF8H使用Studio 5000 Logix Designer有三种数据格式供您选择:仅模拟、模拟和HART PV以及按通道模拟和HART。如果您希望标签的成员像非HART模拟输入模块的成员一样排列，您应该选择模拟和HART PV格式。模拟值集中在标签的末尾，便于同时查看所有8个模拟值。但是，如果您希望将每个通道的状态、模拟值和设备状态集中在一个标签中，您应该选择模拟和HART by通道格式。这将使您更容易查看与现场设备相关的所有数据。使用该模块，您可以在一个模块中实现模拟和HART连接。HART命令可以作为非计划消息与1756-IF8H一起传输。

1756-IF8H的其他特性包括多电流和电压输入范围、实时采样、过程报警、离线检测、模块滤波、欠量程和超量程检测、速率报警和高速可寻址远程传感器(HART)通信。1756年的IF8H每个通道都有可变的工作范围在模块中。可供选择的范围包括-10至10伏、0至5伏、0至10伏、0至20毫安和4至20毫安，HART仪器使用后一范围。该模块的分辨率范围为16至21位。底板电压和电流额定值为5.1伏DC、300毫安、24伏DC和135毫安，其总底板功率为4.77瓦。电压功耗为3.21瓦和4.01瓦的电流，它还具有30伏DC(电压)和8伏DC(电流)的最大过压保护。

罗克韦尔PLC模块1756-IF8H

Allen-Bradley 1756-F8H is a HART analog module belonging to the ControlLogix system. It requires a 36-bit spring-clamped RTB or detachable junction box housing, which can be 1756-TBCH or 1756-TBS6H, and is compatible with HART5, 6 and 7. Eight differential voltage or current inputs are available for this module, with one HART modem per module.

The 1756-IF8H input module receives the signal from the process value transmitter and then converts it into the corresponding measured value for use in the Logix controller. The 1756 IF8H using the Studio 5000 Logix Designer has three data formats for you to choose from: analog only, Analog and HART PV, and analog and HART by channel. If you want the members of the tag to be arranged like the members of a non-HART analog input module, you should choose the analog and HART PV formats. Analog values are clustered at the end of the label, making it easy to view all eight analog values simultaneously. However, if you want to group the status, analog values, and device status of each channel in a single label, you should choose the analog and HART by channel formats. This will make it easier for you to view all the data related to your field devices. Using this module, you can implement emulation and HART connections in one module. HART commands can be transmitted with 1756-IF8H as unscheduled messages.

Additional features of the 1756-IF8H include multiple current and voltage input ranges, real-time sampling, process alarm, off-line detection, module filtering, underrange and overrange detection, rate alarm, and high-speed addressable remote sensor (HART) communication. The 1756 IF8H each channel has a variable operating range in the module. Options include -10 to 10 volts, 0 to 5 volts, 0 to 10 volts, 0 to 20 MA, and 4 to 20 MA, the latter range used by HART instruments. The module has a resolution range of 16 to 21 bits. Baseboard voltage and current ratings are 5.1 V DC, 300 MA, 24 V DC and 135 mA for a total baseboard power of 4.77 watts. Voltage consumption is 3.21 watts and 4.01 watts of current, and it also has a maximum overvoltage protection of 30 volts DC(voltage) and 8 volts DC(current).