巴赫曼NT255常用型号NT255

NT255

NT255

PLC在以模拟量方式控制变频器的模拟量输入端子时，也可同时用开关量方式控制变频器的开关量输入端子。

PLC以RS485通信方式控制变频器的硬件连接

PLC以开关量方式控制变频器时，需要占用较多的输出端子去连接变频器相应功能的输入端子，才能对变频器进行正转、反转和停止等控制；PLC以模拟量方式控制变频器时，需要使用DA模块才能对变频器进行频率调速控制。如果PLC以RS485通信方式控制变频器，只需一根RS485通信电缆（内含5根芯线），直接将各种控制和调频命令送给变频器，变频器根据PLC通过RS485通信电缆送来的指令就能执行相应的功能控制。

RS485通信是目前工业控制广泛采用的一种通信方式，具有较强的抗干扰能力，其通信距离可达几十米至上千米。采用RS485通信不但可以将两台设备连接起来进行通信，还可以将多台设备（多可并联32台设备）连接起来构成分布式系统，进行相互通信。

KEPCO NTC200 PROGRAMMABLE POWER SUPPLY MANAGER 2W 200V

Airmo Hydraulics Inc TESTMASTER Hydrostatic Test Tools 

AMPROBE INSTRUMENT MODEL AMC-4 HAND CRANKED MEGOHMMETER

TEKTRONIX OA5032 OPTICAL ATTENUATOR 750 nm to 1600 nm

TEKTRONIX 7633 OSCILLOSCOPE MAINFRAME + AMP + TIME BASE

3 Slot Module with (x2) Dual Trace 7A18 + (x1) 7B53A

TEKTRONIX 2440 ANALOG PORTABLE OSCILLOSCOPE 300 MHz 2CH

*Tested & Calibrated with 14-Day Warranty!

TEKTRONIX 11403A Oscilloscope M/F 3 GHz (11401A 11402A)

PRATT & WHITNEY G-2100 Supermicrometer Super Micrometer

AGILENT HP 85024A High Frequency Probe 300 KHz - 3 GHz

AGILENT / HP 8657B SYNTHESIZED SIGNAL GENERATOR 2060MHz

HP AGILENT 6625A Precision System Power Supply 25 / 50W

HUGHES 45112H-1000, 45742H-1010, & NOISECOM NC5322 Ext

GIGATRONICS 8542 Dual Channel Power Meter - 40 GHz

AGILENT HP 83000 VLSI E2784-66503 B13545 PDPS CAL BOARD

AGILENT HP 83000 VLSI E2784-66503 C-6315 PDPS CAL BOARD

AGILENT HP 83000 VLSI E7179A SDSP CPU / CDU SWI D-3803

AGILENT HP 83000 VLSI E2803-66501 A 3407 A-3424

*LOT* SENSARRAY RESISTANCE CALIBRATION STANDARD KIT

SENSARRAY 1840A-8-5030 PROCESS PROBE INSTRUMENTED WAFER

SENSARRAY 1840A-8-5004 PROCESS PROBE INSTRUMENTED WAFER

AGILENT / HP 54112D DIGITIZING OSCILLOSCOPE 100MHz 4 CH

MAURY MOUNTZ UTICA TORQUE WRENCH / DRIVER / BREAK-OVER

Full lot of 24 various assortted wrenches!

CENCO Cat No. 92003 MEGAVAC Vacuum Pump 1/3 HP Motor

HP / AGILENT 33311-60050 SWITCH

***LOT OF 7 SWITCHES***

SOLOMAT MPM500E THERMOCOUPLE, HYGROMETER, TEMP PRESSURE

x2 AGILENT HP E5385A High Density Samtec Probe Adaptor

HP 9000 SERIES 9144 16-TRACK CARTRIDGE TAPE DRIVE

AGILENT / HP 8657B Synthesized Signal Generator 2060MHz

TEKTRONIX HFS9003 STIMULUS MAINFRAME SYSTEM *PARTS*

AGILENT / HP 54602B OSCILLOSCOPE 150MHz + 1CM Rackmount

**Unit has been TESTED & comes with 14-Day WARRANTY!!!

AGILENT / HP 8657B Synthesized Signal Generator 2060MHz

GASTECH GT Series Portable Gas Monitor Tester Meter C02

ANRITSU Model 560-7N50B RF Detector 10 MHz to 20 GHz

TEKTRONIX TG501 SG502 SG503 TIME MARK SINE WAVE GEN OSC

ASCOR 3000-47 Dual VXI Switch Matrix Module # 90400800

Quinstar QNS Series 26.5 - 40 GHz NOISE SOURCE

R&S OPTION B20 MODULATION CODER UPGRADE BOARD

HP AGILENT 6024A DC POWER SUPPLY OPT 100, 0-50V, 0-10A

AGILENT / HP 6427B DC POWER SUPPLY, 0-20V / 0-15A

GENERAL INSTRUMENTATION RF Power Measurement Head 3000W

PMH 13/3000 Frequency: 13.56 MHz-5 kHz

GIGATRONICS 8541C POWER METER w/ CABLE + OPTION 013

IFI LEVELING PREAMPLIFIER LPA-3B, 500MHz / 1 GHz

IFI LEVELING PREAMPLIFIER LPA-3A, 500 MHz / 1 GHz

Lucas Labs Reference Assembly OVDS-7010 VDS CAT TOOL x2

Waters Torque Watch ( TorqueWatch ) Model 940-2

BIRD 4021 DIRECTIONAL POWER SENSOR / 0.3 - 1000 Watts

*Tested w/ 7 Day ROR Warranty*

TEKTRONIX 2465 Analog Benchtop Oscilloscope 300MHz 4CH

BNC 625 625AT FUNCTION GENERATOR DC - 21.5 MHz vs. HP

ARBITRARY WAVEFORM FUNCTION GENERATOR w/ 7-Day Warranty

GIGATRONICS 8541C POWER METER 100KHz - 4GHz + OPTION 01

Tested & Fully Operational with 14-Day Warranty!!!

FLUKE 343A DC VOLTAGE CALIBRATOR 7-Digit 4-Terminal Out

Delta Electronics CQS-4 C-QUAM Synthesizer / Generator

BOONTON 51075 DIODE POWER SENSOR 18GHz 50Ω *PAIR of 2*

AGILENT / HP 6033A PROGRAMMABLE SYSTEM DC POWER SUPPLY

BNC 625 625A FUNCTION GENERATOR DC - 21.5 MHz vs. HP

ARBITRARY FUNCTION WAVEFORM GENERATOR w/ 7 Day Warranty

MARK-10 SERIES MG MG10 DIGITAL FORCE GAUGE / 500lbs

SORENSEN A12-1624 Center-Mike Hole Gage + Boster Bar

ELLSTROM Gage Block Set 92 peice, Accuracy "I" 

BIRD 4021 DIRECTIONAL POWER SENSOR / 0.3 - 1000 Watts

R&S OPTION B50 Fast CPU Upgrade for SMIQ Series SIG GEN

ADVANTEST R6144 / TR6142 DC VOLTAGE CURRENT / GENERATOR

AGILENT / HP 75000 SERIES B HP E1301A W/ MODULES

HP Agilent 438A Dual Channel Power Meter + OPT 002

AGILENT / HP 1662A 68 CHANNEL PORTABLE LOGIC ANALYZER

OLYMPUS ILV-2 OES XENON LIGHT SOURCE

APPLICOS MEASUREMENT & CONTROL ATX7002 / ATX-7002

HP 85033-660014 3.5mm FEMALE SHORT (8753E Calibration)

STARRETT WEBBER GRADE 2 GAGE BLOCKS 1-100MM # RS45MA1