51403519-160

51403519-160

51403519-160

51403519-160

2、 数字量信号连接应注意的问题

变频器的输入信号中包括对运行/ 停止、正转/ 反转、点动等运行状态进行操作的数字量输入信号（开关型指令信号），这些信号常来自PLC 的数字量输出信号。PLC 通常利用其内部的继电器接点（继电器输出型P L C ）或具有开关特性的元器件（晶体管输出型PLC）与变频器相连，得到运行状态指令，如图1 和图2 所示。在进行数字量信号的连接时应注意：

（1）使用继电器输出型P L C 与变频器相连时，应注意接触不良常带来变频器误动作，因此在实际接线中要注意连接可靠。

（2）使用晶体管输出型P L C 与变频器相连时，应注意晶体管本身的电压的高低、电流的大小等限制条件在其范围内，保证系统的可靠性。

（3）设计变频器的输入信号电路时，应尽量避免采用继电器等感性负载，因继电器开闭产生的浪涌电流可能引起变频器的误动作。

（4）当P L C 输出的开关信号进入变频器时，有时会发生外部电源和变频器控制电源之间的串扰，应注意对P L C和变频器分开接地，避免两者使用共同的接地线。

Lecroy- Lot of (5) PP002 probe, 350MHz, 10:1, 10MOhm

LeCROY PP006 PROBE

LeCROY PP006A PROBE

LeCroy D600A-AT WaveLink 4 GHz Differential Probe with Adjustable Tip Module

Lecroy- Lot of (4) PP002 probe, 350MHz, 10:1, 10MOhm

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LECROY 8901 USPP 8901

LeCROY AP020 ACTIVE PROBE

LeCROY PP096 8 GS/s ADAPTER

LeCroy 7200 Precision Digital Oscilloscope w/ 7242 400 MHz Plug-In Z

LRS LeCroy 429A Fast Logic Fan-In Fan-Out TTL-NIM Translator Plug-In Module 4-CH

LeCroy 8105 Memory CAMAC Plugin Module MM8105

LeCroy IF-8857 CAMAC compatible "frame grabber"

LeCroy PPE1.2KV 10:1/100:1 200/300 MHz 50MOhms High-Voltage Probe 600V/1.2kV Max

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LeCroy 6010 Magic Controller

Lecroy MM8105 8105 Memory CAMAC Plugin

Lecroy MM8104 8104 Memory CAMAC Plugin

Lecroy 3587 Data router CAMAC Plugin

Lecroy 3588 Histogram memory CAMAC Plugin

LeCroy LPA-SMA 

LECROY 9424 QUAD CHANNEL DIGITAL OSCILLOSCOPE

LECROY MM8105 MEMORY CAMAC MODULE

LECROY 9314L 4-CHANNEL 300MHZ OSCILLOSCOPE AS IS FOR REPAIR OR PARTS

LECROY MODEL 9310L DUAL CHANNEL 300MHZ OSCILLOSCOPE DIM DISPLAY AS IS

Lecroy 9300-4 Rev. D

Lecroy PP005 PASSIVE Probe 500 MHz 11pF / New in Bag

LeCroy 7200 Precision Digital Oscilloscope with 7242 400 MHz Plug-In/Probe Kit

LeCroy TR8818A CAMAC Module TR 8818 Transient Recorder

LeCroy LG8252 32-Channel ADC CAMAC Module

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LRS LeCroy 2341S 16-Fold Register CAMAC Crate Module

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LeCroy TR8818 Transcient Recorder CAMAC Crate Module

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LeCroy D300A-AT WaveLink 4 GHz Differential Probe with Adjustable Tip Module

Lecroy 4434 Scaler CAMAC Crate Module

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LeCroy MM8 103A Memory CAMAC Module

LeCroy 9400A Dual-Channel 175MHz Oscilloscope 100Ms/s 5Gs/s CRT Display 2-Ch

LECROY 9310A DUAL 400MHz OSCILLOSCOPE w/ BURNT SCREEN **FOR PARTS** 

LeCroy PP006A 10:1 500MHz 10 MOhms Passive Probe

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LeCroy PP009-1 ÷10, 500 MHz, 10 MΩ, Passive Probe 

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LeCroy PP011-1, 500 MHz, 10 MΩ, Passive Probe 

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LeCroy 4303 TFC Time-to-FERA Converter CAMAC Module

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LeCroy 4300B 16-Channel ADV FERA CAMAC Module

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LeCroy 2280 ADC System Processor CAMAC Module

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Lecroy 3512 Buffered ADC CAMAC Crate Module

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Lecroy TR8828D Transcient Recorder CAMAC Crate Module

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Lecroy WL600 Wavelink Active Probe Body 6Ghz for parts

A pairs of Lecroy PP006 Oscilloscope Probe 500MHz

YT204001-KF

YT204001-AD/2 YXU-168A

YT204001-AA/1 YPM102A

YT204001-CE YPG109A YYT105CE

YT204001-CN/4

YT204001-HC

YT204001-JD/3

YT204001-BP

YT204001-FSI1

YT204001-FK/1

YT204001-FL/1

YT204001-OK

YT204001-BN

YT204001-JL

YT204001-JB

YT204001-JD

YT204001-FL/1

YT204001-DT

YT204001-AA

YT204001-CB/2

YT204001-FK

YT204001-FB

YT204001-FS

YT204001-JH

YT204001-BG

YT204001-BM

YT204001-DL

YT204001-FP

YT204001-DM/1

YT204001-BG

YT204001-FD

YT204001-BL/2

YT204001-FY/1

YT204001-AN

YT204001-JJ/1

YT204001-EH

YT204001-JH

YT204001-DY/2

YT204001-DF

YT204001-CP

YT204001-CN/2

YT204001-KE

YT204001-JD/1

YT204001-AM

YT204001-HS

YT204001-0Y/2

YT204001-HE

YT204001-JF

YT204001-CK/1

YT204001-JH/1

YT213001-BA/1

YT213001-BC/2

YT213001-AC/2

YT213001-BC

YT213001-AB

YT213001-AA

YT213001-BA

YT213001-BC/1

YT213001-BB

YT213001-AA

YT213001-AC/4

YT213001-AA/3

YT213001-AB/2

YT213001-AB/6