FN310现场无线多协议模块

通过“现场无线通信模块FN110”,现场无线多协议模块可以作为现场无线设备与现场无线网络连接。该产品从连接的传感器上获得传感器数据,并通过FN110将其传送至现场无线网络。有关“现场无线通信模块FN110”的概况和详细信息,请参阅其一般规格书(GS)

  • 协议转换:
    本产品可以将有线通信协议转换为ISA100 Wireless协议,并传输至现场无线网络。ISA100 Wireless是一项国际的工业无线网络标准,服务于过程行业。
  • 多协议支持:
    可以选择HART或Modbus通信协议。工厂运行需要的各种有线传统设备可按需求转换为无线设备。
  • 安装灵活性:
    本产品内置电池,可以无需电缆为所连的现场设备供电,而不必考虑电缆管理和成本问题,因此可以将设备安装在以往无法到达或安装费用过高的地方。
  • 小型轻量的外壳、带LCD显示屏:
    本产品的外壳小且重量轻,内置LCD显示屏,可以显示过程数据和通信状态。

协议代码:J:数字通信(HART 7)
协议代码:M:数字通信(RS485 Modbus协议)

电源规格 电池 专用电池组
额定电压: 7.2 V
额定电容: 19 Ah
电池组:
原锂亚硫酰氯电池x2 
带电池箱(电池单独销售)
性能规格 更新周期 [协议代码:J]
 5 ~3600 秒可选
[协议代码:M]
 8 ~ 3600 秒可选
电池特性 [协议代码:J]
电池组使用长寿命的锂亚硫酰氯电池。在以下条件下*3一对一的连接中,HART设备的BootStrapTime*1*2 为10秒时典型电池寿命为4年; BootStrapTime*1*2 is 60 s为60秒时典型电池寿命为1年。
  • 环境温度: 23 ±2ximm°C
  • 设备作用: I/O模式
  • 更新周期: 10分钟
  • LCD显示: 关闭 

*1: BootStrapTime 为从HART设备通电开始到可获取可靠数据为止的时间。
*2: 有关BootStrapTime的详细信息,请联系HARD设备制作商。                                                         *3: 振动和所连HART设备类型等环境条件可能会影响电池寿命。
在4-20mA 回路连接中, 以下条件*1:时,更新周期为10秒时,典型的电池寿命是8年; 更新周期为5秒时,寿命是5年。

  • 环境温度: 23 ±2°C
  • 设备作用: IO模式
  • LCD显示: 关闭 

*1: 振动等环境条件会影响电池寿命。

[协议代码:M]
在以下条件下*1,典型电池寿命是8年。

  • 环境温度: 23 ±2°C
  • 设备作用: IO模式
  • 更新周期: 10分钟
  • LCD显示: 关闭 
*1:  振动和所连Modbus设备类型等环境条件会影响电池寿命。
功能规格 输入

[协议代码:J]
本产品具备HART主机功能,可进行一级和二级设置。本产品和HART设备间的通信规格如下:
协议版本: HART 7*
通信模式:
   HART 多点连接 固定 4 mA  
   HART 点对点连接 4-20 mA
HART 设备数量: 1 台
电缆:最长20 m (AWG14 to 22 带屏蔽层)
* HART协议确保之前的版本的向后兼容性。
[协议代码:M]
本产品和Modbus设备通信规格如下:
通信模式: 双半工通信 (RS-485 兼容) 
协议: Modbus RTU
通信速度: 9600 bps 
Modbus设备数量: 1台
电缆:最长20 m (AWG14 ~22,带屏蔽层)

电源

FN110的电源
供给电源:3.5V 
供给电流: 50 mA
[协议代码:J]
HART设备的电源* 1 * 2 *3
最大供给电源:18 V (稳定状态)
最大供给电流:12 mA (稳定状态)
*1:  HART在4 mA 固定电流模式下运行。
*2:  在使用前,请确保负载电流为0 ohm时HART设备的最小运行电压不超过16.5V。
*3:  使用VOUT端子时的电源。
[协议代码:M]
Modbus设备的电源
供给电源:3.5V
供给电流: 10 mA

安装环境 环境温度范围 运行时: -40 to 85°C (海拔最高 3000 m)
-30 to 80°C (LCD 可视范围)
强制合规性声明 CE一致性
  • EMC: EN61326-1 Class A Table 2, EN55011 Class A
  • 安全性:EN61010-1 (室内/室外使用)
加拿大安全标准 CAN/CSA-C22.2 No.61010-1
CAN/CSA-C22.2 No.94.1, CAN/CSA-C22.2 No.94.2
IEC 60529
保护等级

接头妥善固定时为IP66,IP67和Type 4X

防爆类型 FM (美国或者加拿大), ATEX, IECEx本安认证
物理规格 重量 500 g (不带安装件, 夹具和电池)
概述:

 Ground water well level monitoring is needed.

行业:
概述:

The greatest advantage of native wireless field instrument and actuator devices is their lack of cables for data transmission or power. Eliminating these tethers also eliminates their associated costs in time and money for installation and ongoing maintenance. Companies have adopted the ISA100 wireless standard for a variety of reasons, but the most critical is its ability to support reliable communication in process manufacturing environments. ISA100.11a (IEC 62734) was designed through cooperation among device and system vendors working with process automation end users to create a platform able to satisfy all involved. Figure 1 illustrates a typical device-level network topology using ISA100.11a wireless instruments.

Figure 1. The ISA100.11a network exists at the device level, supporting communications between field instruments and actuators.

Wireless field devices provide many possibilities for operational cost reductions along with improved performance and facility management. But in many existing plants, most field devices are already installed on wired networks, which often are not capable of providing all the information available from HART-compliant smart devices. Wireless can be used with new devices, but it can also extend the communication capabilities of existing instrumentation, realizing their diagnostic and other extended capabilities.

The User Case for Wireless Adapters

Unless there is something seriously wrong with existing wired networks, no end user is going to rip out and replace working wired devices in a process plant. However, when new devices are added, the plant may decide not to extend the wired networks. New field instruments and actuators may be available as self-contained wireless devices, or they may only be made in a conventional wired version. Those of the latter category will need to be configured to communicate with a wireless network by adding a wireless adapter.

A wireless adapter can function in two modes. First, it can add complete wireless communication capability to a conventional wired instrument. All the data from the device can be sent via the wireless network without the need for any data cables.

Second, it can extend the communication capability of an existing wired device. Many wired device-level networks are not capable of communicating any information beyond the most basic analog signal representing the measured process variable. Smart devices installed on such a network cannot send the additional information they generate, stranding it at the source. Adding a wireless adapter allows it to send the additional information using the wireless network, while continuing to use the wired network for the transmission of the process variable.

When an adapter is added to a conventional wired device, there are multiple powering options. The adapter can be outfitted with its own internal power supply and function independently. If the instrument needs power, the adapter can support it, eliminating the need for power cables.

Features of the Wireless Adapter

The Field Wireless Multi-Protocol Module is designed to work with HART-compliant field devices and provides a range of basic communication and operational functions:

  • Converts HART data into a format suitable to send via an ISA100.11a network,
  • Sends HART commands for configuration and troubleshooting,
  • Provides its own internal power for data transmission, and
  • Provides power for a device needing an external source.

Figure 2 shows an example of how to use the Field Wireless Multi-Protocol Module with HART-compliant devices. This adapter has all the necessary ISA100 communication functions built in and only requires connection to the field device.

Figure 2. The Field Wireless Multi-Protocol Module can be connected to a HART-compliant device. The module mounts separately, allowing it to be positioned for most effective wireless propagation regardless of where teh instrument is located.

Typical Wireless Adapter Applications

There are many ways in which the Field Wireless Multi-Protocol Module can be used in a process plant, but most applications fall into one of these categories:

Realizing full functionality of existing devices while saving on cabling costs, installation hassles, and future maintenance.

Most plants have large numbers of HART-compliant devices installed to monitor and control all manner of process variables (Figure 3). Most of these are connected via wired device-level networks. The Field Wireless Multi-Protocol Module converts these into ISA100.11a-compliant wireless devices without any modifications. If a plant or process unit requires renovation, the plant can decide to repair and maintain the wired network, or simply eliminate parts of it. If it costs $100 per meter of cable installation in explosion-proof zones, replacing just 100 meters of cabling with wireless means saving $10,000 in site work. In the case of a major plant upgrade, where sensing points are being removed or where aging cables must be replaced, wireless adapters allow the use of existing HART-compliant devices without cable reinstallation and maintenance.

Figure 3. Any HART-compliant field device can be mated with the Field Wireless Multi-Protocol Module.

Extending wireless communication to conventional devices.

Companies embracing wireless field devices and networks may be constrained by the limited selection of native wireless devices available today. While the range of choices is growing, some types of devices, particularly those with high power consumption, are only available in conventional wired configurations. In such cases, the Field Wireless Multi-Protocol Module can convert any wired HART-compliant instrument or actuator from any vendor to wireless.

Gathering and sharing data from smart devices. 

While the process variables from HART-compliant devices in an existing plant are sent to the plant’s automation system through the field device network, other information, such as device condition information and other diagnostic capabilities, can be of great value to the maintenance department. It can collect and manage such data, and use it when analyzing maintenance schedules, maintenance records, repair parts usage, and so on. If the existing wired field-device network cannot extract that information and collect it for sharing interdepartmentally, those gains cannot be realized. Upgrading the network can be a complex and costly undertaking, but the information can be sent via the wireless adapter. Adding a Field Wireless Multi-Protocol Module allows maintenance department to capture HART commands and diagnostic information from the 4-20 mA line with little change to the installation. The adapter can work with two-wire and four-wire device types. In case of four-wire devices, an external power source can be connected to the device, making it easy to support devices with high power usage.

Deploy HART-compliant devices in remote areas where no data or power cables are available.

The Field Wireless Multi-Protocol Module can extend power to an external device, which makes it simpler to deploy HART-compliant devices in locations where wired field-device networks don’t reach and where no power may be available. Under favorable conditions, the adapter can cover a distance up to 500 m in any direction, and more than 1 km if routers are used. For example, combining a HART-level instrument with a Field Wireless Multi-Protocol Module provides a means to measure the water level of rivers and reservoirs (Figure 4). And since the adapter weighs less than 1 kg including its batteries, it and its connected HART-compliant device can be moved easily, enabling flexible measurement point changes.

Extend wireless network range by acting as a router.

In situations where distances between wireless field devices are very long or where large metallic structures create barriers to effective wireless signal propagation, a Field Wireless Multi-Protocol Module can be used as a router to relay communication to and from other wireless field devices (Figure 4). Another ISA100.11a native wireless instrument can serve the same function, however in many situations it may be easier to use an adapter as a dedicated router since it is light and compact. It can also be located strategically to fill out the network most effectively.

Figure 4. The geographical coverage of a network can be extended by adding routers to relay signals and reinforce weak sections of the mesh. Routers can be located wherever they can do the most for the network, separate of any specific instrument.

Conclusion

The Field Wireless Multi-Protocol Module is designed to convert existing wired HART-compliant instruments and valve actuators into wireless devices. It provides flexibility to add new devices in existing plants using wireless field-device data networks, reducing cabling installation and maintenance costs. It also expands the types of wireless sensors available and simplifies device installations. Many plant operators find the wireless adapter to be a useful device able to help existing plants enjoy the benefit of wireless sensing.

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