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 846723V USPP 846723V
RELIANCE ELECTRIC 0-57409-F NSPP 057409F
RELIANCE ELECTRIC 0-86466-77S USPP 08646677S
RELIANCE ELECTRIC 0-51865-9 USPP 0518659
RELIANCE ELECTRIC 0-51668-1 USPP 0516681
RELIANCE ELECTRIC 0-51445-A NSPP 051445A
RELIANCE ELECTRIC 0-54392-2 NSFP 0543922
RELIANCE ELECTRIC 0-49017-16A USPP 04901716A
RELIANCE ELECTRIC 419021-1C NSFP 4190211C
RELIANCE ELECTRIC 86475-10S NSPP 8647510S
RELIANCE ELECTRIC 86475-10R NSFP 8647510R
RELIANCE ELECTRIC 38C80 USPP 38C80
