1756-IB32B 数字直流输入模块

Description

1756-IB32B 数字直流输入模块

Allen-Bradley 1756-IB32B是一个ControlLogix数字I/O模块。作为ControlLogix系统的一部分，该输入模块有32个输入，分为2组，每组有16个点。它被安装到ControlLogix底盘通过使用所需的可移动端子块外壳，或RTB，如艾伦-布拉德利1756-TBCH或1756-TBS6H。该模块占用ControlLogix机箱的单个槽位，并提供开放式机箱类型。1756-IB32B模块的工作电压范围为10 ~ 31.2伏直流，标称输入电压为24伏直流。它的电压类别为12/24伏直流吸收，5.1伏电流为120毫安，24伏电流为2毫安，背板总额定功率为0.66 W。60℃时最大功耗为6.2 W, 60℃时最大散热为21.1 BTU/小时。

Allen-Bradley 1756-IB32B ControlLogix数字I/O模块也具有250 mA的最大冲击电流额定，在22毫秒内衰减到小于37%而不激活。在关断状态下，其最大电流为2.27 mA，最大电压为5伏。off-to-on和on-to-off过程的输入延迟时间不同。对于off-to-on进程，存在高达380微秒的硬件延迟以及用户可配置的0、1或2毫秒的过滤器时间。开关延迟时间包括高达420微秒的硬件延迟时间，加上用户可配置的0、1、2、9或18毫秒的滤波器时间。

Allen-Bradley 1756-IB32B是一款高密度离散输入模块，属于ControlLogix可编程自动化控制器(PAC)产品系列。该模块具有32个输入通道，分为2组，每组16个通道。

它可以安装在本地I/O机架或分布式I/O机箱中，也可以安装在独立或分布式控制系统(DCS)中，例如Allen-Bradley的Plant PAx。当通过硬件配置进入该模块时，模块的参数是可访问的，例如模块的一般属性以及兼容键控和插槽分配等重要参数。该模块还具有可配置的请求数据包间隔(RPI)，模块抑制，对通信失败的反应和通过控制网的计划连接。该模块的每个通道都具有可配置的滤波器设置，以允许对模块的反应时间进行微调。这种调整在离散信号不稳定和暴露于噪声的应用中是有用的。此功能有助于防止误报正负读数。

该模块还具有通过模块信息进行自诊断的能力，可以监控模块的诊断状态，如轻微故障和严重故障。它还可以检测模块连接的ControlLogix背板的状态。

该模块随可移动终端块(RTB)一起发货。这种RTB能够模块化替换有缺陷的模块，并提供易于布线的信号。该模块兼容的RTB为1756-TBCH、1756-TBS6H或36端子RTB。

1756-IB32B

1756-IB32B 数字直流输入模块

The Allen-Bradley 1756-IB32B is a ControlLogix digital I/O module. Part of the ControlLogix system, this input module has 32 inputs available in 2 groups, with 16 points in each group. It is mounted to a ControlLogix chassis by using the required removable terminal block housing, or RTB, such as either the Allen-Bradley 1756-TBCH or 1756-TBS6H. This module, occupies a single slot of the ControlLogix Chassis and supplied with an open enclosure type. The 1756-IB32B module has an operating voltage range of 10 to 31.2 Volts DC and a nominal input voltage of 24 Volts DC. It has a voltage category of 12/24 Volts DC sink, a current draw of 120 mA at 5.1 Volts and 2 mA at 24 Volts, and a total backplane power rating of 0.66 W. The maximum power dissipation is 6.2 W at 60 degrees Celsius, while the thermal dissipation is 21.1 BTU/hour, also at 60 degrees Celsius.

The Allen-Bradley 1756-IB32B ControlLogix digital I/O module also has a maximum inrush current rating of 250 mA, which decays to less than 37% in 22 milliseconds without activation. In an off-state, its maximum current is 2.27 mA and its maximum voltage is 5 Volts. The input delay time for the off-to-on and on-to-off processes differ. For the off-to-on process, there is a hardware delay of up to 380 microseconds plus a user-configurable filter time of either 0, 1, or 2 milliseconds. The on-to-off delay time includes the hardware delay time of up to 420 microseconds plus the user-configurable filter time of either 0, 1, 2, 9, or 18 milliseconds.

The Allen-Bradley 1756-IB32B is a High-Density Discrete input module that belongs to the ControlLogix product family of Programmable Automation Controllers (PAC). This module features Thirty-Two (32) input channels, grouped in Two (2) with Sixteen (16) channels each group.

It may be installed to a local I/O rack or distributed I/O chassis or in a stand-alone or Distributed Control Systems (DCS) such as Allen-Bradley’s Plant PAx. One this module is entered through the Hardware configuration, the module’s parameters are accessible such as the module’s general properties with important parameters of compatible keying and slot assignment. This module also has a configurable Request Packet Interval (RPI), Module Inhibition, Reaction to communication failure and Scheduled connection over ControlNet. Each channel of this module has configurable filter settings to allow fine tuning of the module’s reaction time to signals. This adjustment is useful in applications where discrete signals are erratic and exposed to noise. This feature helps prevent false positive negative readings.

This module is also provided with the capability of self-diagnosis through the module info where the module’s diagnostic status can be monitored such as minor and major fault. It can also detect the status of the ControlLogix backplane where the module is connected.

This module is shipped with a Removable Terminal Block (RTB). This RTB enables modular replacement of a defective module an provides ease of wiring the signals. Compatible RTB for this module are 1756-TBCH 1756-TBS6H or a 36-terminal RTB.