描述
PLC内部输入电路作用是将PLC外部电路（如行程开关、按钮、传感器等）提供的符合PLC输入电路要求的电压信号，通过光电耦合电路送至PLC内部电路。输入电路通常以光电隔离和阻容滤波的方式提高抗干扰能力，输入响应时间一般在0.1~15ms之间。根据输入信号形式的不同，可分为模拟量I/O单元、数字量I/O单元两大类。根据输入单元形式的不同，可分为基本I/O单元、扩展I/O单元两大类。
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Reliance Electric AC Motor, # T16G3015N-QD, WARRANTY
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Reliance 0-57408-1C Power Module Interface- NIB
**NIB** Reliance Electric Transistor 402410-221AW
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Reliance Electric 16 Slot Rack # 57C331A
Reliance SP500 ISU44010 Easy Clean+ VS AC Drive 10HP
RELIANCE ELECTRIC NETWORK COMMUNICATIONS BOARD 57404-1E
RELIANCE ELECTRIC 15HP MOTOR P25G3375E TEFC
NEW RELIANCE A-C HIGH DIGITAL OUTPUT MODULE 57403-E NEW
Reliance 0-49011-9 Cardpak Driver #22854
RELIANCE ELECTRIC 3HP DC MOTOR 1600RPM 500V HORSEPOWER
RELIANCE ELECTRIC MODEL RECTIFIER STACK 8647510S 1000V
Parker Linear Actuator with Reliance Electric Servo
RELIANCE REEVES X-V MOTO DRIVE 1 HP 17.8 GEAR RATIO
