TVB6002-1IMC 1308-644857-12 1381-644857-16工控模块系统备件
. 在所有型号中，光电头包含所有功能电子和光学器件。它包括同步检测电路，该电路倾向于限制控制仅使用其自身的脉冲LED源操作。可调输入灵敏度将控制应用能力扩展到半透明甚至透明材料，如塑料薄膜和玻璃。提供开关以确保在整个控制操作范围内进行灵敏度调整。轻击开关，42DR型控制器可在亮通（光束断开）或暗通（光束闭合）模式下运行。42DRP型接近控制上的光学快门允许在短距离和长距离接近应用中使用单个控制。当快门处于短距离（SR）位置时，最大操作距离为0.30 m（1 ft）。如第6页的42DRP型响应曲线所示，操作裕度的急剧下降有助于忽略接近被检测对象的背景。双开路集电极输出，一个是用于电流吸收器的NPN开路集电极，另一个是提供电流源的PNP开路集电极。因此，这些控制提供了同时连接到继电器负载或光耦合器驱动器和TTL逻辑输出的机会。连接图见第7页。电源底座类型42DRU、42DRP和42DRA本质安全型5500和5700光电头只能插入适用于13…29.5V DC电压输入的端子底座类型42DTB 5500。
. In all models, the photohead contains all the functional electronics and optics. It includes synchronous detection circuitry which tends to restrict the control to operate only with its own pulsed LED source. Adjustable input sensitivity broadens control application capability to those involving translucent and even transparent materials, such as plastic films and glass. A switch is provided to assure sensitivity adjustment over the entire control operating range. With a flick of a switch, the Type 42DR control provides operation in either a light energized (beam break) or dark energized (beam make) mode. An optical shutter on the Type 42DRP proximity control permits the use of a single control for both short- and long-range proximity applications. With the shutter in the short range (SR) position, the maximum operating distance is 0.30 m (1 ft). The very sharp drop off in operating margin as shown in the Type 42DRP response curve on page 6 helps to ignore backgrounds that are close to the object being detected. The dual open collector outputs, one an NPN open collector for current sink and the other a PNP open collector to provide current source, are included in all Type 42DR controls to maximize customer logic interconnection capabilities. Therefore, these controls provide the opportunity for simultaneous connection to relay loads or optocoupler drives and TTL logic outputs. See page 7 for connection diagrams. Power Base Type 42DRU, 42DRP, and 42DRA Intrinsically Safe models 5500 and 5700 Photoheads can be plugged only into a terminal base Type 42DTB Model 5500 suitable for voltage inputs of 13…29.5V DC.
