一个油井作业区一般会有多台磕头机，可以通过总线（如RS-485，CANopen等）将驱动磕头机的变频器作为从站挂在PLC下。变频器的频率指令可以通过PLC给定，也可以通过两个电位器来给定，分别对应上冲程和下冲程。这样就实现了磕头机冲程频次的可调节和上下冲程时间比的可调。磕头机的抽油杆柱上要配置载荷传感器，通过它将实际压力反馈至PLC。PLC一方面可以控制变频器的启停和频率指令的调节，另一方面可以将变频器的状态（包括运行状态、电流等）给到HMI或油田服务器。特别要说明的是，台达C2000有内置PLC功能，如果在PLC控制简单的情况下，可以不用另配PLC。
3.2配置直流电抗器和交流电抗器
鉴于油田作业的环境，为了降低干扰，建议配置直流电抗器和交流电抗器。
3.3配置能源回馈单元REG2000
采油作业区的磕头机，有的处于上冲程时，有的处于下冲程，如果能将下冲程产生的电能反馈给上冲程的磕头机加以利用，这相对于传统加制动单元加制动电阻的做法，可以提高电机的制动能力，也可以大大节约了能量，还可以减少制动电阻产生的这一部分热量，一举三得。台达新推出的REG2000能量回馈单元非常适合这种应用场所。

Fluke 2300A Temperature Scanner and 2030A Printer

 

IBM Unisys Model M Keyboard - 1391401 - Classic Keyboar

 

Flow Technology Stainless Steel Turbine Flowmeter T-16C

 

Copley PST-040-13-DP Power Supply 40 VDC

 

Epicom Epiview 100 Data Communications  IC693CMM311  Analyzer

 

EG&G Ortec 9310 /10 Dual Pre-Scaler NIM BIN Module

 

EG&G Ortec 719 Preset NIM BIN Module

 

Adalet Heavy Duty Explosion Proof Aluminum Enclosure Ju

 

2 each, THK SC16 Pillow Block and 2 each, 21" Linear Gu

 

8 each, NB SMB13 Pillow Block and 2 IC693CMM311  each, 20" Linear Gu

 

Lot of 12 Assorted,/UNUSED Motorola Micor TRN TLN T

 

Nikon Speedlight SB-28 Hot Shoe Mount Strobe Flash & Co

 

Dynamic Research LMT 600-25-15-F, 600-13-15-0 Transduce

 

IBI 40800 electrophoresis HBS - Horizontal Blotting Sy

 

Digital DEC PDP-8 M7381 Flip Chip / PDM 70-D BCD(?) Inp

 

Johnson & Assoc. RML-1A Ratemeter IC693CMM311  Geiger w/ ASP-2A Prob

 

Viatran 245 (245AKGDH 245ABADH) 7.5K to 100k PSI High R

 

Johnson & Assoc. RML-1A Ratemeter Geiger w/ASP-2A Probe

 

HP / Agilent 62005A DC Power Supply Workbench / Machine

 

Flow Dynamics Subsonic Venturi With Bleeder Stainless S

 

Beckman Industrial 20MHz Oscilloscope 9022 Dual Channel

 

5 each, IFM VS-0200-SR0101  IC693CMM311 Temp/Flow Monitor 24VDC wit

 

LRS LeCroy 234 Bipolar Linear Amplifier NIM BIN

 

9 Each BOC Edwards TPU Combustor Thermocouple Kit K Typ

 

BayTech RPC28A-30NC 21 Port 240VAC 12A Power Strip with

 

Wagner Model FVD Force Cells Modules 30 and 100 lbs.

 

Eberline DR200 Radiation Dosimeter Reader

 

PCB 487A12 Vibration Monitor Piezotronics

 

AMP Tyco 90131-4 Ratcheting Crimping Tool 26-22 AWG

 

AMP Tyco 90298-2 Ratcheting Crimping Tool 20-18 AWG

 

AMP Tyco 90299-2 Ratcheting  IC693CMM311 Crimping Tool 16-14 AWG

 

Harvard 55-3336 Syringe Pump Continuous Delivery Valve

 

Hewlett Packard / Agilent HP E1351-66201 Fet Multiplexe

 

Hughes HTT-550 Thermocouple-Controlled Power Supply

 

4 ea. SunX NAVI FX-300 FX-301P Photoelectric Sensors &

 

Lambda LFS-50-20 Regulated Power Supply 20VDC

 

Research Inc. Dimension Data Logger 8710

 

Sony CX-75 Monochrome Machine IC693CMM311  Vision CCD Camera W/ Lens

 

Lambda LM EE5 Regulated 5 DC 31A Power Supply

 

SMC CY1H10-200 Magnetically Coupled Rodless Linear Guid

 

Protek 6502 Oscilloscope 2 Channel 20MHz

 

BayTech RPC28-30NC 21 Port 115VAC 12A Power Strip

 

MKS Dual Thermocouple Vacuum Gauge Controller 286 For R

 

21 Each Norb Meridian M3904 IC693CMM311  Charcoal Telephones

 

Beautiful Wooden Oberwerk 100mm Binocular Tripod with T

 

Nalgene Acrylic Beta Radiation Shield Box 6812-0002

 

Canberra 442 Linear Gate Stretcher Module NIM BIN

 

5 each, Kontes Pyrex Dual Neck 250ml Round Bottom Boili

 

Fabco-Air Pancake F55x2-10 J MR V Line Cylinder Press

 

GCI E84 SPC Serial To Parallel IC693CMM311  Controller & Bonus Spare

 

Host Automation Products Think & Do H2-WPLC1 Windows CE

 

EG&G Reticon MC9256-2 & MB9000-1 Camera 105fps Photodet

 

6 Ea. Motorola AirDefense 400 SN-400-P-1 Wifi Monitorin

 

2 Each Cisco IP Phone 7900 IC693CMM311  CP-7941G - Used

 

Uticor Technology PMD150 Programmable Message Display 1

 

5" x 25" Laboratory Mantle Cylinder Heating Jacket Labo

 

Sony BKE-905 VTR RS-422 Interface Time Code BVE-900

 

Adit B51B01S PMT for 14-Pin Socket - Unused

 

Dual Variac W5L Panel Rack IC693CMM311  Mount 150V 8.5A for Parts

 

High Vacuum SS Bellows 10" Flexible Coupler with 4" Ape