Description
定时和计数控制上看,电器控制系统采用时间继电器的延时动作进行时间控制,时间继电器的延时时间易受环境温度和温度变化的影响,定时精度不高。而PLC采用半导体集成电路作定时器,时钟脉冲由晶体振荡器产生,精度高,定时范围宽
Kito Corporation 1 Ton Hoist ES3B 2500
USED Yale Warehouser electric manlift w/ charger 1000lb
USED Allen Bradley 1785-L60B/E and 1785-ENET/A Coupled
Allen Bradley 2094-BC02-M02 Kinetix 600 Servo Drive
with 2094-PRS1 1 Axis Slim Power Rail FREE USA SHIPPING
USED Allen Bradley 8600-F13B CPU Module Board