1756-PA72 标准电源 电压和直流电源故障的反应

1756-PA72 安装在机箱的左侧位置。它在机箱外部有一个专用的插槽分配，不占用 ControlLogix 插槽。它可以安装在不同的 ControlLogix 机箱中，例如 1756-A4、1756-A7、1756-A10、1756-A13 和 1756-A17，无论是 A、B 和 C 系列。此电源重约 0.95 千克（2.10 磅），物理尺寸为 14.0 x 11.2 x 14.5 厘米（5.51 x 4.41 x 5.71 英寸）。该模块沿 ControlLogix 机箱具有开放式外壳，因此需要安装在外壳内，以保护硬件免受工业污染物和干扰。1756-PA72 可能不用于冗余电源应用，但它也可能用于分布式 I/O 架构。
1756-PA72 在 25 至 0 摄氏度（60 至 32 华氏度）时的功耗为 140 瓦。该电源的功耗为 85.3 BTU/小时，电源的大浪涌电流为 20 A。艾伦-布拉德利 1756-PA72 提供内置过流保护。它由用户提供，大电流为 15 A。该电源的大变压器负载为 100VA，电压隔离为 250 伏连续。1756-PA72 还具有在 3500 伏直流电下测试 60 秒的增强绝缘类型。艾伦-布拉德利 1756-PA72 是开放式设备。此电源应安装在针对特定环境条件设计的适当外壳中。外壳内部只能使用工具进入。请参阅 NEMA 标准 250 和 IEC 60529 出版物中的用户手册，了解不同类型外壳提供的防护等级说明。

箱变测控通信系统由主控室及发电区户外房箱变测控装置组成。在主控室配置讯记工业以太网交换机CRS7228M-16GTX8GC，在各区域发电区户外房箱变测控装置配置CK7220M-16GTX4SFP工业以太网交换机组成千兆冗余自愈光纤环网，与其他箱变测控装置配置的工业以太网交换机组环，引出的网口可以接摄像头、环境检测仪等设备，1756-PA72   标准电源   引出的串口可以直接接RS-485/RS-232设备。讯记自主研发的CK-Ring环网技术，能够在传输介质发生故障时自动恢复，环网自愈时间小于20mS,可以工业以太网交换机为媒介实现通过大屏显示在远方对箱变进行监测和控制，从而减少了现场维护的工作量以及由此带来的人身安全隐患。

 风电场内的风机与升压站之间的距离一般较远，为了降低电能传输过程中的损耗，风电场内的风机就需要就地配置10kV风电箱变，把风机输出的电能先进行升压，然后再汇流到110kV 升压站侧输送到主网系统。箱变测控系统能解决因箱变距离监控室远且分散不易管理的问题，升压站系统无法实现对箱变监视和控制的问题。1756-PA72   标准电源   箱变测控装置融合了通信管理机、工业以太网光纤交换机和完善的箱变测控保护功能于一体。每个发电区一般由30个户外房或者风机组成，与之对应30个箱变，分为三个环网，每个环网约10台箱变，与中控室交换机组成光纤环网，确保网络通信的稳定性和安全性。

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1756-PA72   标准电源  

1794-IE8 requires an external power supply voltage range of 10.5-31.2VDC and a nominal power supply voltage of 24VDC. It requires a 60 mA power supply current. It requires the use of a terminal base for installation and connection of input signal wiring. The compatible terminal bases are 1794-TB2, 1794-TB3, and 1794-TB3S, 1794-TB3T, and 1794-TB3TS. The module only requires one terminal base.
This Flex I/O module is compatible with Flex I/O communication adapters, such as Ethernet, control network, and remote I/O adapters.
This module does not require calibration beyond the factory settings. It measures 3.7 x 2.1 x 31.8 inches and can be installed on DIN rails or directly panel mounted. The 1794-IE8 module can be installed on the 1794-TB2, 1794-TB3S, 1794-TB3ST, 1794-TB3T, or 1794-TB3 terminal base. It also comes with power and status indicators, and has an open housing. The rated voltage specification of this module is 24 V DC, and the power supply voltage range is 10.5 to 31.2 VDC, including 5% AC ripple.
This module is compatible with analog current signal ranges such as 0-20mA and 4-20 mA, and voltage signal ranges of+/-10VDC and 0-10VDC inputs. Its voltage resolution is 2.56 mV/cnt (unipolar) and 5.13 mV/cnt (bipolar), and its current resolution is 5.13 μ A/cnt。 The maximum voltage overload of this module is 30 volts continuous, and the maximum current overload is 32 mA continuous, but each has only one channel.
The maximum power consumption of the 1794-IE8 module is 3 W, and the heat dissipation is 10.2 BTU/hour, both at 31.2 V DC. It operates with a vibration of 500 g at 5 to 10 Hz. Its working impact is 30 g, while the non working impact is 50 g. The operating temperature range of this module is -20 to 55 degrees Celsius, while its storage temperature range is -40 to 85 degrees Celsius. The 1794-IE8 module has 20.25% full scale current input and voltage input accuracy at 0 ℃, although the voltage input includes gain, offset, repeatability and nonlinear Error term. The step response of voltage terminal to 63% is 9.4 ms, and that of current terminal is 18.2 ms. Its absolute accuracy at 0 degrees Celsius is 2.25% of full scale, the accuracy drift of the voltage terminal is 0.00428% of full scale per degree Celsius, and the temperature of the current terminal is 0.00407% of full scale per degree Celsius.

A-B其他型号：
1756-RM
1756-M14
1756-M13
140A-C-ASA11
1756-RM
1756-IB16
1786-RPFRXL
1756-EN2T
1756-RM2
1756-L72
1756-CN2R
1756-1B161
1756-OF8
1756-1F8
1756- EN2T
1756-1B161
1756-1F16
1756- OB16E
1756-L72
1756- OB16D
1756-IB16D
1756-CN2R
1756-1B16
2711-K3A10L1
1769-BA
| MVI56-MCM
1394- SJT22-A
1786-RPFRXL