1756-OF8A 模拟输出模块 可用于控制和调制电气和现场设备

【产品详情】

Allen-Bradley 1756-OF8 是 ControlLogix 平台的一部分的模拟输出模块。该模拟模块可用于控制和调制电气和现场设备，传输或重新传输信号，以便与测量和记录仪器连接或任何其他目的。

1756-OF8 带有八 （8） 个模拟输出通道，可配置为 +/-10VDC 和 0-20 mA 模拟输出信号。该器件在21 mA - 650 nA/位范围内具有15位分辨率，在10.4V - 320 μV/位范围内具有15位分辨率，具有开路、短路和过压保护功能。

1756-OF8 采用 R-Ladder DAC、单调无失码模块转换方法，并以整数模式（左对齐，2 秒补码）IEEE 32 位浮点的形式提供寄存器数据。浮点格式的扫描时间为 12 毫秒，整数格式的扫描时间为 8 毫秒。

1756-OF8 需要可拆卸接线端子来连接输入信号。合适的接线端子是 1756-TBNH 和 1756-TBSH。对于 1756-TBNH，适用线径为 0.33...2.1 毫米2 （22...14 AWG） 实心或绞合铜线，额定温度为 105 °C （221 °F） 或更高，单线连接的最大绝缘为 1.2 毫米（3/64 英寸），0.33...1.3 毫米2（22...16 AWG） 实心或绞合铜线，额定温度为 105 °C （221 °F） 或更高，最大绝缘 1.2 毫米（3/64 英寸），用于双线连接。使用 1756-TBSH 时，合适的电线尺寸为 0.33...2.1 毫米2 （22...14 AWG） 实心或绞合屏蔽铜线，额定温度为 105 °C （221 °F） 或更高，最大绝缘 1.2 毫米（3/64 英寸）1756-TBSH 仅适用于单线连接。

运行时，它的失调漂移分别为50 ppm/摄氏度和0.1 ppm/摄氏度，温度相关增益漂移分别为25 ppm/摄氏度和50 ppm/摄氏度（电流）。该模块的浮点扫描时间为 12 毫秒，整数扫描时间为 8 毫秒，模块总误差分别为 0.15%（电压模式）和 0.3%（电流模式）。1756-OF8 模块的隔离电压为 250 伏，使用经过增强绝缘测试的 1350 伏交流电在输出通道和背板之间持续 2 秒。它具有 T4A（北美）、T4 （ATEX） 和 T4 （IEC） 温度代码，并采用开放式外壳。1756-OF8 的工作温度范围在 0 至 60 摄氏度之间，旨在以 30G 的冲击率和 2G 的振动（10 至 500 赫兹）保持其功能。

1756-OF8A 模拟输出模块 可用于控制和调制电气和现场设备

【英文介绍】

Allen-Bradley 1756-OF8 is an analog output module that is part of the ControlLogix platform. The analog module can be used to control and modulate electrical and field equipment, transmit or retransmit signals for connection with measuring and recording instruments or for any other purpose.

The 1756-OF8 comes with eight (8) analog output channels that can be configured for +/-10VDC and 0-20 mA analog output signals. The device has a 15-bit resolution in the 21 mA-650 nA/ bit range and a 15-bit resolution in the 10.4 V-320 μV/ bit range with open circuit, short circuit and overvoltage protection.

The 1756-OF8 uses R-Ladder DAC, monotone unloggable module conversion, and provides register data in integer mode (left-justified, 2-second complement) IEEE 32-bit floating-point format. The scan time is 12 ms for floating-point format and 8 ms for integer format.

1756-OF8 requires detachable terminals to connect the input signal. Suitable terminals are 1756-TBNH and 1756-TBSH. For 1756-TBNH, the applicable wire diameter is 0.33... 2.1 mm 2 (22... 14 AWG) solid or stranded copper wire, rated at 105 °C (221 °F) or higher, with a maximum insulation of 1.2 mm (3/64 in), 0.33... 1.3mm 2 (22... 16 AWG) Solid or stranded copper wire rated at 105 °C (221 °F) or higher with a maximum insulation of 1.2 mm (3/64 in) for two-wire connections. When using 1756-TBSH, the appropriate wire size is 0.33... 2.1 mm 2 (22... 14 AWG) Solid or stranded shielded copper wire rated at 105 °C (221 °F) or higher with a maximum insulation of 1.2 mm (3/64 in) 1756-TBSH for single wire connections only.

When operating, it has offset drifts of 50 ppm/ C and 0.1 ppm/ C, and temperature-dependent gain drifts of 25 ppm/ C and 50 ppm/ C (current), respectively. The module has a floating point scan time of 12 ms and an integer scan time of 8 ms, with a total module error of 0.15% (voltage mode) and 0.3% (current mode), respectively. The 1756-OF8 module has an isolation voltage of 250 volts and uses enhanced insulation tested 1350 volts AC for 2 seconds between the output channel and the backplane. It has T4A (North America), T4 (ATEX) and T4 (IEC) temperature codes and comes in an open housing. The 1756-OF8 operates in a temperature range between 0 and 60 degrees Celsius and is designed to maintain its function at a shock rate of 30G and a vibration of 2G (10 to 500 Hz).

1756-OF8A 模拟输出模块 可用于控制和调制电气和现场设备

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