描述
PLC外部驱动电路对于PLC输出不能直接带动负载的情况下，必须在外部采用驱动电路：可以用三极管驱，也可以用固态继电器或晶闸管电路驱动，同时应采用保护电路和浪涌吸收电路，且每路有显示二极管（LED）指示。印制板应做成插拔式，易于维修。
RELIANCE ELECTRIC 57C-494 USPP 57C494
RELIANCE ELECTRIC 6SP44005 NSFP 6SP44005
RELIANCE ELECTRIC 45C-201 USPP 45C201
RELIANCE ELECTRIC 45C-201A USPP 45C201A
RELIANCE ELECTRIC 45C-201C USPP 45C201C
RELIANCE ELECTRIC 45C-203 USPP 45C203
RELIANCE ELECTRIC 45C-380 USPP 45C380
RELIANCE ELECTRIC 45C-381 USPP 45C381
RELIANCE ELECTRIC 45C-381A USPP 45C381A
RELIANCE ELECTRIC 45C-381B USPP 45C381B
RELIANCE 0-49001-1 POWER SUPPLY MODULE**NIB***
RELIANCE 0-56313-1 ISOLATED PROCESS CONTROLLER**NIB***
