CI626A通讯模块,CI626A控制系统
离散开关和负载通常是双线设备。一般做法是终止
控制面板上的电线。CI626A 3BSE005029R1离散设备的一侧通常是共用的电源或回路接头
指向现场控制输入/输出接线板和辅助接线板连接点连接
提供足够的位置来实现这一点。
输出负载抑制
大多数固态控制包括输出驱动器内的负载抑制。交流固态继电器
接近开关在低电流下关闭，并带有一些内部抑制。直流设备
CI626A通讯模块
如果设备未包含，通常指定抑制。如果出现以下情况，则需要额外抑制：
要耗散的存储负载能量超过模块输出的额定值
关闭放电时间内的抑制器。
2、机械触点与从动输出线圈串联使用。安装其他
抑制，如串联电阻电容器缓冲器，以抵消
通过外部触点而非模块切换线圈时发生。
Discrete switches and loads are usually two-wire devices. General practice is to terminate both
wires at the control panel. One side of discrete devices is usually a common supply or return tie
point. Field Control I/O Terminal Block and Auxiliary Terminal Block tie point connections
provide sufficient locations to accomplish this.
Suppression at the Output Load
Most solid state controls include load suppression within the output drive. AC solid state relays
and proximity switches turn off at low currents with some internal suppression. DC devices
usually specify suppression if not included with the device. Additional suppression is required if:
1.
The stored load energy to be dissipated exceeds the rating of the module's output
suppressor during the turn-off discharge time.
2.
A mechanical contact is used in series with a driven output coil. Install additional
suppression such as a series resistor-capacitor snubber to counteract electrical noise that
occurs when the coil is switched by the external contact instead of the module.
