3701/55 289761-01 3701/55紧急停机设备

3701/55紧急停机设备(ADAPT ESD)是一款安全PLC，具有图形逻辑编程界面和集成超速检测。ADAPT ESD设计用于紧急关闭旋转机械，如蒸汽、燃气、水轮机、膨胀器和其他工艺设备。
ADAPT ESD是一种紧凑、独立、三冗余的安全关断装置，可满足广泛的用户场景和应用。该设计提供了一个电气和机械包，注重可靠性和可用性，以及广泛的自我诊断和符合行业标准。
输入
系统输入使用三个CPU模块处理，提供三重模块冗余(TMR)。每个CPU处理模块处理两个独特的速度输入通道，为系统提供总共6个速度通道。处理模块还监控32个离散(DI)和过程变量(PV)信号输入阵列。该输入信号阵列的12个通道可以配置为离散输入或4- 20ma模拟输入。阵列中剩余的通道仅为离散输入信号保留。
输出
3701/55 ADAPT ESD系统的机器关机功能由TMR继电器输出模块驱动。每个继电器输出模块有五个继电器与可配置性的水平，以适应各种应用和要求。每个模块中五个继电器中的四个用于发出系统逻辑。剩余的继电器反映关联保护路径的OK/NOTOK状态。本特利内华达监视器配置软件提供了一个图形界面来配置中继逻辑。每个继电器的状态由系统输入和配置的系统逻辑与继电器的控制状态一起决定。继电器控制状态取决于应用，可以设置为正常通电/断电和独立的1 / 1(1001)，投票或TMR 2 / 3(2003)，投票。系统中的每个CPU模块都有两个内部供电的4-20 mA记录仪输出，由用户通过Monitor Configuration软件设置的满量程速度控制。

3701/40 177896-05

The 3701/55 Emergency Shutdown Device, (ADAPT ESD) is a safety PLC with a graphical logic programming interface and integrated overspeed detection. ADAPT ESD is designed for emergency shutdown of rotating machinery such as steam, gas, and hydro turbines, expanders, and other process equipment.
ADAPT ESD is a compact, standalone, triple-redundant, safety shutdown device that is designed to meet a broad range of user scenarios and applications. The design offers an electrical and mechanical package with attention to reliability and availability as well as extensive self-diagnostics and compliance to industry standards.
Inputs
Inputs to the system are processed using three CPU modules to provide triple modular redundancy (TMR). Each CPU processing module processes two unique speed input channels, for a total of six speed channels for the system. The processing modules also monitor an array of 32 discrete (DI) and process variable (PV) signal inputs. Twelve channels of this input signal array may be configured either as discrete inputs or 4-20 mA analog inputs. Remaining channels in the array are reserved for discrete input signals only.
Outputs
Machinery shutdown functionality of the 3701/55 ADAPT ESD system is actuated by TMR relay output modules. Each relay output module has five relays with a level of configurability that accommodates a variety of applications and requirements. Four of the five relays in each module are used to annunciate system logic. The remaining relay reflects the OK/NOTOK status of the associated protection path. The Bently Nevada Monitor Configuration software provides a graphical interface to configure relay logic. The state of each relay is determined by the system inputs and configured system logic in conjunction with the control state of the relay. Relay control states depend on the application, and may be set as normally energized/de-energized and independent one-out-of-one, (1oo1), voting or TMR two-out-of-three, (2oo3), voting. Each CPU module in the system has two, internally powered, 4-20 mA recorder outputs controlled by the full-scale speed set by the user through the Monitor Configuration software.