lidan autodriller systems

8/11/2019 Lidan Autodriller Systems

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Lidan Engineering AB S-531 98 Lidkping Phone: +46-(0)510 485570 e-mail: [email protected] SWEDEN Fax: +46-(0)510 210 18 www.lidaneng.se

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LIDAN BRAKE SERVO SYSTEMS FOROFFSHORE AND ONSHORE DRILL RIGS

Autodriller systemBrake servo systemAnticollision system

Especially developed for upgradeof Drawworks with Band Brakes.


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The Lidan autodriller and brake servo system includes:

- Remote band brake servo control- Autodriller Feed off & rate of penetration control- Autodriller Weight on bit control- Anti collision system

INTRODUCTION

1.0 Introduction Page 3

PRODUCTS Page 4

2.1 Lidan ADS autodriller system Page 52.2 Lidan DBS servo braking system Page 62.3 Lidan BCS anti collision system Page 72.4 Principal system DBS, ADS and BCS Page 8

EQUIPMENT DESCRIPTION Page 9

3.1 Control console Page 93.2 Brake actuator assembly Page 10

3.3 Autodriller transmission assembly Page 123.4 WOB electronic control cabinet Page 123.5 Anti collision system Page 133.6 Operators Terminal Page 133.7 Hydraulic power unit Page 14

OPERATION DESCRIPTION Page 15

4.1 Brake control and travelling operation Page 154.2 Drilling system operation Page 164.3 Anti collision system operation Page 18

INSTALLATION AND TESTING

5.0 Installation & Testing Page 20

TECHNICAL SPECIFICATION

6.1 Technical specification Page 226.2 Dimension drawings Page 23


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1.0 INTRODUCTION

Short about Lidan Engineering.

The company is linked back to 1909,when the Lidan Motor Companydesigned and manufactured marinewinches driven by semi diesel engines.After a time span of about 75 yearsthese winches developed into largehydrostatic driven mooring winchsystems for offshore semisubmersible

platforms. To-day the responsible

company for offshore winches is LidanMarine AB, while Lidan EngineeringAB is responsible for diesel-hydraulic drive and braking control systems ofdrawworks for offshore/ onshore drilling and workover. Since Lidan Engineeringinstalled the first Band Brake Control System on a Transocean semi-submersibledrillrig in 1985, the company has included an Autodriller System and an Anticollision System to its product range.

Through the years the company continuously has developed and improved thesesystems and has received DNV (Det Norske Veritas) type approval for thesystems for application on drillrigs world wide. The systems comply with:

1. DNV-OS-E101 Offshore Standard, Drilling Plant,October 2000.

2. NPDs Regulations relating to design and outfitting offacilities etc. in the petroleum activities (The facilitiesregulations), 3 September 2001.

3. NMDs Regulations of 4thSeptember 1987, amended 2,March 1999, concerning construction of mobile offshoreunits, 22.

4. UK SI 1992:2932, The Provision and Use of WorkEquipment Regulations, 1992, regulation 5(1) relating toinitial integrity and purpose for which it is intended to be used.


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2.0 PRODUCTS

The drawworks for land and offshore drillrigs are traditionally composed by adrum assembly, driven by SCR controlled electromotors through a chaintransmission. The drum is disconnected by an air clutch. At lowering, the drum iscontrolled by two independent braking systems; the main brake and the auxiliary

brake. The auxiliary brake is normally an Eddy Current Brake (ECB), which isconnected to the drawworks main shaft through a coupling. The main brakeconsists of two brake bands, acting onto the drum rims, and controlled by a heavysteel lever through a linkage system

Over the years, Lidan Engineering has gained a solid reputation for upgrading of

drawworks of the band brake type, by marketing a unique band brake servocontrol system.

Along with increased drilling complexity, improvement of drawworks controlproperties has become an important issue. The most significant are:

- the Autodriller system, which aids the driller to maintain a steady weight onthe drill bit (WOB) and a continuous line Feed Off in order to increase thedrilling parameters and to save the bit wearing for fewer round trips.

- the Block Control System, which protects for collision of the travelling block

against the drillfloor, the crown block, racking arms or dolly retract failure

- the Servo Control system of the band brakes, increases braking precisionwhen controlling heavy loads at high speeds and, at the same time, the small,

but rigid servo handle eliminates stress and physical workload to the driller,which is applied at operating the traditional heavy brake lever.

There are several brands and types of Autodriller systems available on the market.While other Autodriller systems, require the ECB to be substituted by a DiscBrake, Lidan can offer the Autodriller still keeping the ECB auxiliary brake as is,to be utilized for the purpose it was originally designed for!

This has been made possible because the Lidan system controls the drill line FeedOff by means of the existing brake bands. At the same time, in addition to theAutodrillersystem, Lidan can offer a Block Controland Band Brake ServoControl system.


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When designing the Automated Driller system for drillrigs with the drawworks ofband brake type in mind, the key issue was to create a high sensitive band brake

actuator. The development work, with many improvements implementedgradually over the years, finally resulted in an in-line dual function servo brakeactuator. It incorporates one active and one passive part. The active part is forresponding on the hydraulic signals from the Autodriller system, as well as, whenoperating in tripping mode, the signals from drillers brake handle. The passive

part is for an emergency fail safe brake to full stop function. This dual in-lineactuator is the heart of the Lidan Autodriller Feed Off function, which has noanalogues on the market.

The Autodriller control functions and the Brake handle is on one commonconsole, which, when it is time to add a new stand, the shifting fromautodrilling to manual control simply is by pushing a button on the console.The console comes either as a pedestal or alternatively, as a panel for integrationwith a drillers main console.

The Lidan Autodriller controls the Feed Off through the band brakes without anyinfluence on the electric brake as is the case when drilling by hand.In order to prevent for too much of Feed Off , the driller often must apply a shortmoment of electric brake activation, with overheating problems as consequence!

2.1. Lidan ADS Autodriller system for land rigs, jack up and platform rigs

is user-friendly and its functions easy understandable. The ADS Autodrillersystem is designed for a high degree of precision in drum line pay out (Feed Off)and Weight on Bit (WOB) control. This will assure maximum Rate of Penetration(ROP) utilization, adjustable between 0-120 m/h (on request up to 300 m/h).With a servo hydraulic encoder motor, linked to the drum shaft via a chaintransmission and hydraulically connected to the brake actuator, a closed loop feed

back system is created, which delivers an absolute steady Constant Speed drillline Feed Off. Co-ordinated with the WOB electronic function, the system keeps

bit weight within very narrow limits, sometimes as little as +/-100 kg. Feed Offsetting is stored during shift of drill pipes and setting of WOB is fully repeatable.


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2.2 Lidan DBS Servo Braking system

is especially designed as an aid to increase drill floor work productivity and toimprove drillers surveillance over the increasing number of instruments andsystems around him. The DBS replaces the traditional solid steel brake lever by asmall, but rigid, handle control. The objective with the DBS brake handle controlis to mimic drillers habitual action with the mechanical brake lever and to

preserve a direct feed back through thebrake handle. This, in combination with aneasy coordination to the eddy current brakecontrol handle, will appeal to drillersconfidence and feeling for hook load

versus velocity. Comparing the drillerswork with the steel lever, the brake handlevirtually eliminates the physical effortrequired to control or stop the hook travel,especially when operating high loads. Italso eliminates for fatigue injuries andaccidences. E.g. the well known

phenomena, when the steel lever,unexpectedly and violently, strikes down,triggered by the Crown OMatic top limitsystem, with the potential risk to hit the

driller.

The DBS Brake Actuator incorporates dual functions, one active and one passive.The active function is directed from drillers brake handle for general blocktravelling operations, or, when drilling inautomated mode, from the ADS Autodrillersystem. The passive actuator, with its fail safespring function, is triggered to applyautomatically at a situation when, withoutdrillers notice, an emergency situation is about tooccur.

The latest model, with the active and passivefunctions integrated in one compact in lineactuator, is designed especially with land rigs inmind. With its reduced dimensions it fits into alltypes and sizes of drawworks with band brakes.


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2.3 Lidan BCS Anti collision System

The Autodriller and Brake Servo system is prepared for simultaneous or laterinstallation of an Anti-collision system. The Lidan BCS Anti collision Systemis supervised by calculated function of weight, velocity and current block

position at down and up travel of the block. In order to keep the travellingblock within stored speed limit profiles, a programmable logic controllerdirects the signals to the auxiliary electric brake for soft braking action. Atapproaching a preset limit distance to the floor, the crown block, or, if theracking arms accidentally are being moved into a collision risk area, theElectric Brake gets energized. If required, should not driller take action, thefail safe actuator becomes activated to bring the block into a full stop.

All parameters are supervised by a Drillers Terminal with LCD display,positioned on the drillers console.

The automatic Anti collision System works in parallel with drillers manualcontrol of the electric brake and the band brake. Should the driller supersedethe block limit profiles, the automatic system will interfere and support

braking through the electric brake and the band brake. The automaticbraking action is accompanied with an audible and visual alarm. This willalert the driller to increase his own manual braking activity, which in all

cases override the automatic braking. In autodrilling mode the anti collisionsystem will automatically stop of the Feed Off and apply the brake, whenreaching the set position where the current drill pipe length is drilled off.The display menu automatically changes for autodrilling mode whenswitched On on the console. The travel limit settings for drilling the pipecan be set and stored accordingly.


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2.4 Principal system DBS, ADS and BCS

BRAKESERVO

SPRING

BRAKE

ON

SERVO

PRESSURE

EL.MOTOR

AIR

MOTOR

ON

OFF

OFF

HPUALERT

OVERRIDE

ALARMRESET

BLOCKCONTROL


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The pedestal console is intended for standing driller. For seated driller, asoption, a drillers chair with arm rest consoles is available.

Normally, the direction for the Brake handle for Brake On position is to theright. This direction conforms to the direction of action of the (replaced) steellever, thus keeping up drillers habitual reflexes.

An adapter is welded to the servo actuators brake arm for temporary housing ofthe steel lever, which shall be cut to an appropriate length and used only whenadjustment of the brake band adjusting bolts is required.

The Consoles Panel also includes:

- Pushbuttons and indication lamps for start and stop of the HPU electromotorand, for emergency use, in case of lost electric power, a second stand by

pump, driven by an air motor.

- Push button for Autodriller Feed Off with indication lamp (steady green) andFeed Off controlleroperated at 0-270 deg turn for 0 120 m/h Feed Off rate

- Push button for Autodriller WOB with indication lamp (steady green)and blinking green light for WOB high tendency and WOB low tendency

The read out for the Autodriller functions is from the Weight Indicator, withinterface for adopting digital indication for WOB and ROP.

The Control Console can be equipped with an operators terminal with a LCDdisplay and keyboard as integral part of the Anti-collision system, withAutodriller display, including digital read out of WOB (t/p), Feed Off (m/feet / h)and ROP (m/feet / h)

EL. MOTOR SPRING

BRAKE

SERVO

PRESSUREON

OFF

HPU ALERT

ON OFF

AIR MOTOR

BRAKE

OFF

BRAKE

ON

BRAKE SERVO

FEED OFF

R.O.P W.O.B

AUTODRILLER


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3.2 BRAKE ACTUATOR ASSEMBLY

The brake actuator is of telescopic design with a dual (Active and Passive)

function for minimum space requirements. The actuator shall be positioned inparallel with the drawworks low clutch and connected to the drawworks brakeshaft. The Passive actuator is fail safe and acts by means of a set of cup springs,charged by hydraulic pressure from the HPU. The Active actuator is manuallycontrolled from the hydraulic brake handle at normal pipe handling operations,while the Passive actuator will apply the band brake automatically in case of anemergency situation, or at pressing an emergency button on the Control Console.

Active actuator On

Passive actuator Off

Brake Off

Active actuator OffPassive actuator On

For additional safety, the Brake Actuator is designed with extended stroke lengthto permit a full 90 deg stroke to permit brake action, as emergency, even in caseof a broken brake bands.


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3.3 AUTODRILLER TRANSMISSION ASSEMBLY

The Autodriller

Transmission Assemblyconsists of a compact servohydraulic feed back motorwith bracket assembly, foreasy mounting at position ontop of the eddy current

brake. The feed back motoris equipped with a sprocketwheel and an air-clutch. Asplit sprocket is eitherwelded or bolted to the fixedcoupling hub on the eddy

current brake shaft. The chain transmission links the feed back motor to the drumshaft and is equipped with an auto-lubrication system.

3.4 AUTODRILLER ELECTRONIC CONTROL CABINET.

The Electronic Control cabinet shallbe installed in safe area. The Control

cabinet includes a programmablelogic controller and ex-barriers andinterface relays. The PLC is

programmed to align deviation andcontrol the Feed Off in order to keepthe WOB on set target. Externalsignals (torque, pressure or otheroptions) will be accepted forcontrolling the Feed off in order toget maximum flexibility and drillingutilisation.

The control cabinet includes a HPUalarms system and other controlfunctions for safe operations of theBrake Servo System.


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3.5 ANTI-COLLISION SYSTEM

The ADS Autodriller electronic control

cabinet may be extended to include a BCSAnticollision system. The BCS, as addeditem, will require increased computer

power for the extensive calculating ofspeed, weight and distance to collision

point and handling of a number of sensorsand proximity switches.

3.6 OPERATORS TERMINAL DISPLAY

The Operators TerminalDisplay (standard withthe BCS system, optionfor the ADS system)shall be mounted to theDrillers ControlConsole, with adjustablemeans for best viewingangle to the driller.The Operators terminalincludes:

Stainless steel enclosurewith front panelincluding LCD monochrome display and function keys.With the ADS Autodriller system , as integral part of the BCS Block Controlsystem, the terminal is automatically switched over from Anti collision systemdisplay to Autodriller display when the push button Autodriller On isactivated


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3.7 HYDRAULIC POWER UNIT

The Hydraulic PowerUnit (HPU) consists of a

Stainless Steel hydraulicreservoir, with all majorelectro-hydraulic and

pneumatic valveequipment mounted ontop of the tank. Allinterconnecting pipingsand couplings are ofstainless steel.

The main pump is a

submersed, verticallymounted Screw Pump,designed for workingcontinuously 24 h/day at a

calculated life time >10 years. The noise level is negligible. The pump is drivenby an EExde Electromotor of 4,6 kW. For back up, it is installed a submersedvertical mounted Gear Pump, driven by an Air-motor. A water/oil cooler isconnected to the drawworks cooling water supply system.

The HPU, which is protected against splash water by a stainless steel top cover

with transparent curtains, shall as standard be positioned close to the drawworkslower clutch side, behind the drawworks control console. Other position optionsare available depending on individual space situation.


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4 OPERATION DESCRIPTION

4.1 BRAKE SERVO FOR BLOCK TRAVEL OPERATION:

The DBS brake handle is controlled innear identical fashion to that employedforthe conventional brake lever. Theanalogue property of the brake handle isdesigned with a high resolution forultimate sensitivity at creep speed controlin the handle. This feature makes it easyto identify the `sweet spot' where the loadand the friction counter force reach

equilibrium. The increased resolution isconcentrated especially at this point,which in turn gives a direct feeling for`load in hand'.

The brake handle governs the active function of the brake actuator, working ona brake arm on the drawworks brake shaft. For safety, a set of cup springs

provides a fail-safe passive brake actuator function, standing by to trigger itsspring force to apply the band brake. When applying the spring brake asequential load-sharing function between the two actuator functions prevents forundesired brake reinforcement at the transition between the two braking modes.

The fail-safe spring brakebecomes activated:- At loss of hydraulic servo

pressure- At loss of air pressure- At electric mains failure- On manual activation of the

emergency stop palm button- When the crown limit setting

is exceeded, at a signal froma Crown 'o Matic or other

anti collision system options.


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4.2 AUTODRILLING OPERATION:

From the Control Console the driller directs the Brake Actuator and activates the

Autodriller Feed off and WOB functions. Drillers transition from Autodrillingmode to Pipe handling mode is instant, which is an important aid to reduce theeffect of a drillstring torqueing up.

FEED OFF MODE

The qualities of the Autodriller function goes back to the performance of theservo brake system as executive body.The extraordinary creep speed braking characteristics of the brake servo and

brake actuator system makes the ADS Autodriller system to a tool for a highlyincreased drilling efficiency.The Feed-Off system is a fully hydraulic system, integrated with the brake servoactuator system.

The Feed Off system works as a regulator loop composed by an integral system of

1) The active brake actuator, hydraulically connected to the servo hydraulicencoder motor and mechanically connected to the brake shaft and the brake

band linkage.2) The hydraulic encoder motor, which is mechanically connected to the wire

rope drum via a chain transmission, provides feed back information of the

motion of the wire rope drum to the active brake actuator

The feed back system delivers an absolute steady Constant Speed drill line FeedOff. The hydraulic encoder motor is powered by the HPU and its rotating speedis controlled from drillers Control Console by means of the Feed Off controlknob. The adjusted setting of the R.P.M. of the encoder motor is proportional tothe Feed Off Rate on hook. The Feed Off can be adjusted from 0 to120 m/hour(as option up to 300 m/h).

The equilibrium point, where the drum rotation aligns with the Feed Off rate, theSweet Spot, is automatically and immediately established, independent of string

weight and Feed Off speed. This feature can easily be observed by temporarilyputting the old mechanical lever into the adaptor to demonstrate how theindicator distinctly enters into its equilibrium position at an angle whichcorresponds to the actual load in the string. Always, from hold through increasingFeed Off speed, it can be noticed a near to identical angle of the indicator,oscillating gently around the equilibrium angle, which in turn visualizes that verystable and even dynamic forces are applied to the string and the brake linkage.

In fact, by using the Feed Off constant speed control as a single means fordrilling, the driller would consider it as an efficient drilling assist tool per say!


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Should a drill break happen, the regulated Feed Off decent will simply stay firm a drop in bit weight only would be indicated on the Weight Indicator.

2. WOB MODE:

The driller uses the Feed off mode until he reaches the desired WOB, indicatedon the Weight Indicator. At pressing the WOB On push button, the WOB isset and the Autodriller computer becomes active. The bit weight remainsinitially within a preset span e.g. +/- 300 kg. Along with the computerscalculating against a dedicated algorithm, the fluctuation of the bit weightsuccessively gets reduced to as much as 50% or less, which means a WOB settarget value, e.g. 10 ton +/- < 150 kg.

Two indication lamps remain steady green lightning confirm that WOB is withinpermitted span. If by any reason the WOB should come outside of the presetspan on plus or minus side, he corresponding indication lamp will start flashing,i.e. should the green lamp for WOB low start to flash, it will notice the driller toincrease Feed Off . Typically, WOB low flashing would apply in case of a drill

break, thus immediately alerting the driller about the situation!

Within a few seconds the drilling mode may be switched over to hoisting mode,e.g. when it is time to shift for a new drill pipe stand, or, in an emergencysituation, should a torque up tendency call for an urgent drill string pull up. By

pushing the Feed Off button, the Autodriller function interrupts, indicated by the

shut off of the green light indications. The driller may now release the brake bymeans of the servo control handle and operate the clutch and drawworks throttleas usual. When again driller wishes to resume drilling, the Feed Off rate andWOB setting remains stored as was previously adjusted and he simply proceedsthe drilling operation by pushing ROP and WOB on.


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4.3 ANTI COLLISION SYSTEM OPERATION

The anti collision system is operated from the Operators Terminal, which is

mounted on an adjustable arm on the Control Console. Setting of the desired setpoints is by travelling the travelling block to corresponding positions and pushinga button for setting of the floor, crown, the lower and upper racking arm positions,dolly retract system, etc.

The Anti collision system as Floor saver :

The LCD display indicates the travelling speed in m/s (feet/s) and distance toFloor in meters (feet). When superseding the calculated weight versus speed anddistance to a potential collision property, a buzzer alarm alerts the driller that theelectric brake becomes initiated and simultaneously calls for his attention to takeaction for manual braking. If driller is not taking action, the PLC continuouslydirects the signals to the auxiliary brake (the electric brake) for soft and successive

braking, in order to maintain the travelling block within stored speed limitprofiles. At approaching the preset limit distance to the floor at slow speed, asignal is given for the brake servo actuator to energize, which brings the blockinto a full stop at the set limit.

An override function is established by pushing a function key. The buzzer alarmis pulsating to alert driller, as well as is an override displayed on screen.

Another function key gives information about elapsed Ton-Miles.

The Anti collision system as Crown saver:

Interfaced to the SCR system and driller's foot throttle, the Anti collision systemsurveys the velocity of the block at up-travel. To remain within the speed profiles,drillers foot throttle overrides and shuts down until the speed corresponds to the

profile.


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In case of a high/high speed approach, the throttle shut down triggerscorrespondingly earlier. At close to final approach, the slow down is supported byactivating the electric brake. At a normal low speed rate the driller proceeds

hoisting for his final full brake stop. Should he exceed the set limit point, thebrake servo actuator triggers to apply the band brakes, simultaneously as theclutch air pressure is released. If required, he may proceed at override, which isswitched on from the drillers console. To protect from collision at override mode,for additional safety, the existing toggle valve (Crown OMatic) may be used, setat a permitted ultimate high block level. At this point the toggle valve triggers a

pilot signal to the spring actuator to apply the band brake for a full stop.

Although the encoder for the block travel is of the absolute type, the blockposition is continuously monitored by an up-date sensor, positioned at theguide rail half way up the travelling distance, which will inform the computerthat correct setting positions remain firm.

The Anti collision system for Racking Arms and Dolly Collision protection:

Interfacing the sensors for the upper and lower racking arms, the system willtake action, should a racking arm become extended into collision risk area.The Anti collision system will alert alarm to notice the driller and at the sametime, if the driller is not reacting, a slow down to stop procedure becomesactivated. Interface may be provided to protect also from collision to the drill

string compensator or to the dolly.

Autodriller mode display configuration.

When pushing the Autodriller Feed Off push button, the terminal displayautomatically changes for corresponding information for the Autodrilling mode:

- ROP in m/hour (feet/hour)- Feed Off in m/hour ( feet/hour)- WOB in t (pounds)- WOB variation bar graph (low or high span dependent of primary/secondary

setting)- Drill pipe drilled off distance to floor set point- Elapsed time since start of drillpipe drill off- Expected time for drillpipe drilled off


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5 INSTALLATION & TESTING

Upon agreement Lidan service personnel or approved Lidan representatives mayprovide installation of the equipment. Installation may be performed either during on-going drilling activities, where final hook on is done at a time window availability ofmaximum 6 hours, or during the time period for demobilisation / mobilisation, whatever suits the rig activity schedule. Upon request Lidan can propose installation andquote installation material:

Installation : Mechanical installation comprises:Hydraulic Power UnitBrake ActuatorFeed off Servo motor

Control Console

Piping / hoses interconnection:Hydraulic Power UnitBrake ActuatorFeed off Servo motorControl Console

Interface & interconnections: drawworks Low / High Clutch (air)drawworks Relay Valve (air)drawworks Release Valve (air)

drawworks Toggle Valve (air)

Installation material: Lidan supply (optional):Installation material ( hoses, couplingsetc) as well as installation tools may bequoted upon separate agreement toaccompany the delivery of the systemequipment. Surplus installationmaterial and Lidan installation tools shallbe sent back by Buyer to Lidan or Lidanrepresentative at Buyers cost, immediatelyafter completed and approved installation.

Assistance: Assistance performed by rig personnel,free of charge for the Seller

Typical assistance required:

filling of hydraulic oil into HPUwater connection to oil cooler HPU


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Welding:fixation of base plate,fixation of control consolewelding of protection covers

Electric work:electromotor connectionswitch on/off electromotor connectionemergency stop button to electromotorindication lamps connection

Buyers supply: Electromotor starter with remote control.Electricvoltages supply 24 V DC.Interconnection of switches andindication lamps on Lidan controlconsole.Wiring to Lidan marshalling

junction boxOne Barrel (200 l) Hydraulic Oil ShellTellus Oil S 46 or equivalent.

Time for installation: Time for installation is by experience3-5 days at site, however, this time can

become extended due to unexpected

work impediments, etc.

Testing: Before delivery, all equipment deliveredby Lidan is subject to a thorough FAT-test procedure. The approved FAT-testdocument is a part of the delivery.

Afterapproved installation on the rig,testing of the equipment and training ofdrill crew will be performed to the rig

personnel under supervision of Lidan

personnel or representative personnelapproved by Lidan. Due to the very user-friendly operation properties, the training

procedure normally takes less than anhour until full drilling activities isresumed.


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6 TECHNICAL SPECIFICATION

6.1 Technical specification

Hydraulic Power Unit :Power supply : ........................... 4,6 kW Voltage and frequency specified at order. (400 VAC 50/60 Hz)Oil tank volume:......................... 150 lOil quality: .. ........................ ...... Shell Tellus Oil S 46 or equivalentNormal working pressure: ......... 34 BarCooling water supply: ............... BSP, to be connected to fresh water supply for drawworks electro motors.Cooling water consumption: ..... 15 LPMAir supply: ..................... ............ 6-10 Bar, Connection BSP.Air quality: ... ......................... .... ISO 8573-1 Class 6.4.3 or better.Air Consumption: ...................... - Normal working mode max 50 NL/Min .

- With backup air motor running 3600 NL/Min

Dimensions (lxbxh):. .................. 600 x 700 x 1125 mmWeight:....................................... 170 KgInstallation:........................ ......... min 150 mm from wall. Front and right or left side accessible for maintenance.Location: ..................... ............... Adjacent to the drawworks. Contact Lidan for advice and layout.

Brake actuator:Dimensions (lxbxh).................... 1245 x 300 x 280 mmWeight:....................................... 125 Kg

Control console:Dimensions (lxbxh).................... 478 x 283 x 992 mmWeight:....................................... 40 KgLocation alternatives: ................. - On open drillfloor or in a drillers cabin, positioned at any distance from

the drawworks, for standing or seated driller.

Design alternatives: .................... - Control panel to be inserted in drillers main console.- Control Console on pedestal- A left and right hand consoles mounted on a gliding/rotated chair,

with added control means for auxiliary brake, clutch control, etc.

Autodriller encoder motor:Dimensions (lxbxh).................... 500 x 380 x 250 mmWeight:....................................... 45 KgLocation: .................... ................ On top of auxiliary brake. (Installation kit for Baylor brake available)

Autodriller WOB electronic control cabinet :Power supply: ......................... ... 24V DC 15%, 6ADimensions (lxbxh).................... 400 x 400 x 200 mmWeight:....................................... 15 KgLocation: .................... ................ Safe area , (Zone 1 as option)

Interface: ..................... ............... Hook load by hydraulic sensor or 4-20 mA signal.

Anticollision terminal display:Dimensions (lxbxh).................... 300 x 200 x 100Weight:....................................... 5 KgPower supply:........ ..................... Through electronic control cabinet

Anticollision electronic control cabinet:Dimensions (lxbxh).................... 800 x 600 x 250 mmWeight:....................................... 50 KgPower supply:........ ..................... 220V AC, 6ALocation: .................................... Safe areaInterface: ..................... ............... Hook load by hydraulic sensor or 4-20 mA signal

Auxiliary brake, SCR and clutch control by potential free contacts.


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6.2 Dimension drawings

Control console (Drawing no 20707)

Brake actuator assembly (Installation drawing no 20884)

SERVO PRESSURE FEED OFF

R .O .P W .O .B

EL. MOTOR

ON OFF

SPRING

BRAKE

AIR MOTOR

OFFON

EL.MOTOR

ON

OFF

SPRING

BRAKE

ON

OFF

AIRM

OTOR

SERVOPRESSURE

FEEDOFF

R.O.P

W.O.B


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Hydraulic power unit (Drawing no 10931)

Autodriller transmission assembly (Installation drawing no 20962)

lidan autodriller systems

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