CIMS(Ceramax Integrated MeasuringSystem)

The CompanySince 1953, Rexroth HydraudyneB.V. has been gaining expertise inthe sale, design and manufacture ofengineered to order hydrauliccylinders. Piston diameters rangeup to 1,450 mm and stroke lengthscan be as long as 45,000 mm.

We are a solid basis for a business partnership.Bosch Rexroth is a group ofcompanies specializing in the fieldof drive and control technology,with locations in all importantindustrial areas in more than 80countries. The Bosch RexrothHydro Cylinder range is unique inthe world thanks to the productscope, and the geographical distri-bution of both production andsales locations. Cylinder produc-tion facilities for standardcylinders, tie-rod and mill type upto 320 mm bore and 3 meter strokeare located in Germany, Sweden,Brazil, the United States andChina. The larger bore andstroke cylinders as wellas the ABS andspecial cylinders areproduced for theworld market inthe Netherlands.

IntroductionExtremely high demands are often placed on the continuous use ofhydraulic cylinders, commonly in extreme ambient conditions. These cylinders are often employed in capitalgoods such as continuous castingmachines in heavy industry, dredging vessels, offshore platforms, ship loadingand unloading systems, tunnelingmachines, as well as bridges and sluices. Against this background the market demands extremely durable products, fully capable to with stand corrosive and abrasive conditions.

Ceramax Engineered Coatings(CEC), the basis for CIMS With its revolutionary CeramaxEngineered Coatings, RexrothHydraudyne developed a newinternationally recognized range of piston rod coatings. Everycylinder in its specific applicationcan have its own optimizedengineered cylinder rod coating,created for special circumstancesand applications.

Each layer is applied with advancedprocesses like plasma spraying andHVOF spraying. Several differentmixes of ceramic or metal matrixmaterials can be applied,depending on requirements forwear, corrosion and service life.

CEC can be applied to both ourBosch Rexroth standard cylinderranges CDL (light), CDM(medium), and CDH (heavy) aswell as ABS or Application BasedStandardizationcylinders.

Use of one ofthe CEC rod

coatings is a prerequi-site for any application

using CIMS, CeramaxIntegrated Measuring

System, another RexrothHydraudyne innovation. CIMS is ahighly reliable, failsafe and accuratecylinder stroke measuring system.

Ceramax and CIMS in a hostile offshore environment

CIMS MKII Operation principal A magnetic field is created andshaped between a permanentmagnet and a grooved piston rod,covered with Ceramax coating.Two half bridged magneto-resistiveelements, located in this magneticfield, produce sine and cosinesignals which are the input for atracking phase resolver. Theoutputs of this resolver are quadra-ture incremental counting pulses.For long distance transmissionthese pulses are converted toRS422A differential output pulses.With appropriate cabling,shielding, impedance and countingequipment, the result is a simple,high quality, accurate and reliabledisplacement measuring system.

Implementation CIMS MKII cylinders can easily be implemented in customercontrols. The RS422A differentialcounting pulses are protectedagainst and insensitive to electricalnoise. The pulses can be acceptedby a variety of counters with differential line receivers.

CIMS MKII in combination withthese devices can be used for:

– Control of position

– Read-out of position

– Safeguarding / limiting of position

– Triggering of external actions

PISTON ROD

CERAMAX CIMS

groove pattern

Magneto resistive sensor

SIN COS

ConditioningExitationoscillator

Tracking phaseresolver

RS 422Aline drivers

Power regulator

A B

A

A

B

B

24 VDC

GND

Position loop controller

Programmable logic controller

Position display

Electronic CAM controller

CIMS MKII analogue converter

0-10V

0/4 - 20 mA

CERAMAX

CIMS MKII

Production ofCIMS MKII

Standard CIMS MKIIcustomer interfaces

Mechanical Lay OutThe CIMS MKII sensor and electronics are integrated in the cylinder head in a solid stainless steel housingoutside the high pressure zone. They are fully protected against all environmental impacts. This construction alsoensures easy serviceability and the possibility of offering redundant measurement solutions.

A variety of electro-mechanical cable outputs from a high performance IP67 connector up to IP68 high pressureprotection is available. Also a certified EEx-version of CIMS MKII system is optional.

Standard IP 67 connector IP 68 cable outlet EEx version of CIMS MKII

Redundant CIMS MKII solution

Specification

CIMS MKII

Electronics Supply 24 VDC ± 20%, 250 mA maxPosition output incremental encoder 1024 x (A+B)

pulses / 10 mm (quadrature)Output drivers RS422A differential line driversEMC IEC801 level 1

Mechanical Cable output IP67 connector – IP68 hose/pipeProtection class housing IP68 (10 bar)Stroke length unlimitedMax. velocity 1500 mm/s

Performance Position accuracy Linearity better than 1 mmTemperature coef. ± 0.025 mm/°C

Long distance data transmission up to 400 m possibleTemperature range –25 °C up to 70 °C

CIMS MKII converter

Supply 24 VDC ± 20%Power 1 W max.Input – Quadrature incremental A and B

pulses in RS422A format (100 kHz max.)Input impedance 10 k•

– Reset 5–24 VDCOutput 0..10 V, 0..20 mA, 4..20 mAAccuracy Resolution ± 0,03% fs

Linearity ± 0,15% fsTemp. coeff. ± 60 ppm/°C (typical)

Programmable over RS232 input:– Stroke length– Output voltage or mA– Preset value

Mounting DIN rail mounting RS32/TS33

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CIMS MKII offers fully digitalsignals for direct digital operationwithout any loss of accuracy andneed for calibration. For lessdemanding applications conver-sion to analogue current or voltageis possible. This will add anadditional inaccuracy of approxi-mately 0.2% full stroke.

CIMS MKII is the solution for all applications– Heavy Industry

– Offshore, Marine, Dredging

– Civil Engineering

– Mining and Material Handling

– Presses

– Servo/Simulation

Advantages– Unlimited stroke length– Basic accuracy better than 1 mm

for all stroke length– No calibration needed

(1024 pulses/10 mm)– Data transmission over hundreds

of meters (RS422A)– Standard incremental counting

pulses (quadrature)– Easy interfacing to customer

electronics for measuring,safeguarding and control

– Explosion safe (EEx) optional– Redundancy solutions possible– Stainless steel housing (IP68)– Easy serviceability without

oil spillage– All fragile parts protected against

all impacts– Extremely robust shock resistant– Cable outputs fit for all

environments– Thousands of CIMS units

in the field– MTBF over 100,000 hours

Hartel barrier, Rotterdam

Roll change system Hard rock drilling machine

CIMS MKII

Split hopper dredger

CIMS MKII – functional and reliable under all environmental conditions

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Bosch Rexroth CorporationIndustrial Hydraulics2315 City Line RoadBethlehem, PA 18017-2131Telephone (610) 694-8300Facsimile (610) 694-8467www.boschrexroth-us.com

RA 17 029/10.02

Printed in the United States

Bosch Rexroth CorporationCorporate Headquarters5150 Prairie Stone ParkwayHoffman Estates, IL 60192-3707Telephone (847) 645-3600Facsimile (847) 645-6201

Bosch Rexroth CorporationElectric Drives and Controls5150 Prairie Stone ParkwayHoffman Estates, IL 60192-3707Telephone (847) 645-3600Facsimile (847) 645-6201

Bosch Rexroth CorporationLinear Motion andAssembly Technologies816 E. Third StreetBuchanan, MI 49107Telephone (616) 695-0151Facsimile (616) 695-5363

Bosch Rexroth CorporationPneumatics1953 Mercer RoadLexington, KY 40511-1021Telephone (859) 254-8031Facsimile (859) 281-3491

Bosch Rexroth CorporationMobile Hydraulics1700 Old Mansfield RoadWooster, OH 44691-0394Telephone (330) 263-3300Facsimile (330) 263-3333