描述
PLC的输入输出信号可以是开关量、数字量或模拟量，其中最普遍应用的是开关量。PLC开关量输入设备有两种形式：一种是无源开关，如各种按钮、继电器触点、控制开关等；一种是有源开关，如各种接近开关、传感器、编码器、光电开关等。PLC开关量输出通常用三种形式：继电器输出、晶体管输出和双向晶闸管输出；由于PLC每个输出点的负载能力较小，因此一般能直接驱动很小功率的执行机构，或驱动控制执行机构的接触器线圈或指示灯
RELIANCE ELECTRIC FIELD CONTROLLER 0-51893-4
Reliance AC motor ID# P56H7262M with Dodge brake
One-day shipping available
Reliance AC Servo Motor, # 1326AB-B520F-21-K5 WARRANTY
One-day shipping available
Reliance Electric Duty Master Motor
RELIANCE ELECTRIC AUTOMAX 6010 PROCESSOR 57C430B Used
RELIANCE ELECTRIC RESOLVER DRIVE I/O 60031-2
Reliance 2 Axis Servo Controller Part# 57C422 Used
Reliance 147 Watt Power Supply Part# 57C494 Used
NEW RELIANCE ELECTRIC 14C106 VS DRIVE 1/4-3/4HP 115VOLT
8-40-HAVIT Reliance 40-Gallon Natural Gas Water Heater
RELIANCE ELECTRIC 2GU41002 GP2000 2HP 460V AC DRIVE*NNB
