描述
抗干扰与外部互锁当PLC输出带感性负载，负载断电时会对PLC的输出造成浪涌电流的冲击，为此，对直流感性负载应在其旁边并接续流二极管，对交流感性负载应并接浪涌吸收电路，可有效保护PLC。当两个物理量的输出在PLC内部已进行软件互锁后，在PLC的外部也应进行互锁，以加强系统的可靠性。
ENCAD NOVAJET 850 6ft WIDE FORMAT PRINTER/PLOTTER
EPSON STYLUS PRO 9600 4FT WIDE FORMAT PRINTER/PLOTTER
CASTLE DUAL L-195 ADJUSTABLE SURGICAL LIGHT
HASKEL Air Driven Fluid Pump DSHF-300 50,000 PSI
EG&G ORTEC 92X SPECTRUM MASTER
THREE LOWEL SOFTLIGHT 1500 LIGHTING SYSTEM
COSA 6000 CD PORTABLE STACK EMISSION ANALYSER
DI DIGITAL INSTRUMENTS PICOFORCE SPECTROSCOPY CONTROL
* ASSOCIATED ENVIROMENTAL CHAMBER BD-101-S3C
RAMSCO SD-60-IRC CHAMBER
EXTRON MAV 1616 SERIES SWITCHER
