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
Leybold-Heraeus Air Operated Vacuum Gate? Valve 2.5″
Inficon Leybold QM200 15537 Guage Head QM 200
Leybold Vacuum Cold Head Motor Cool Power 065
Leybold Vacuum Secuvac Safety Valve Cat #215137 (NIB)
Leybold Pump P/N 21945 Removed from Leybold Ultratest F
Leybold Pump P/N 590 29113 from Leybold Ultratest F
Leybold AG LH HU 1 Turbo Molecular Vacuum Pump Power
LEYBOLD IC-6000 DEPOSITION CONTROLLER
LEYBOLD TURBOVAC 50 TURBO PUMP WORKING
D4B LEYBOLD TRIVAC ROTARY PUMP KAT# 91246-2 L011300122
LEYBOLD AF 40-65 OIL EXHAUST FILTER
