描述
PLC控制系统的输入电路设计。PLC供电电源一般为AC85—240V，适应电源范围较宽，但为了抗干扰，应加装电源净化元件（如电源滤波器、1:1隔离变压器等）;隔离变压器也可以采用双隔离技术，即变压器的初、次级线圈屏蔽层与初级电气中性点接大地，次级线圈屏蔽层接PLC输入电路的地，以减小高低频脉冲干扰。
NEW ATHENA CONTROLS 6275S22F RTD TEMPERATURE CONTROLLER
NEW FLEX-A-SEAL 223001S2RS2 STYLE 30 CARTRIDGE, 1-3/8″
RACAL INSTRUMENTS 5014
RK INDUSTRIES RK-LPR-503X FLUID PRESSURE REGULATOR
SPEEDFAM CLEANING SYSTEM 6G5006TP
MEDAR 4920-9 CIRCUIT CARD, PC BOARD FOR WELDING CONTROL
NEW SEW EURODRIVE KA37/T DY71ML/TH HELICAL BEVEL GEARMO
DPL SPC 0032 STAINLESS STEEL DIAMOND SINGLE SEAT VALVE
NEW AQUOS NDT SNAKE EYE II DISPLAY UNIT
