Table of Contents
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Summary of Contents for DATUM ELECTRONICS M425
- Page 1 DATUM ELECTRONICS LIMITED TELEPHONE: +44 (0) 1983 28 28 34 FAX: +44 (0) 1983 28 28 35 EMAIL: support@datum-electronics.co.uk WEB: www.datum-electronics.co.uk DATUM ELECTRONICS M425 TORQUE TRANSDUCER HANDBOOK AND INSTALLATION GUIDE...
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Page 2: Table Of Contents
DATUM ELECTRONICS M425 TORQUE TRANSDUCER HANDBOOK CONTENTS M425 INTRODUCTION DATA OUTPUT The M425 Transducer - 3 operational modes What is it designed to do? Data output format SYSTEM ADVANTAGES Raw data torque calculation M425 system performance and benefit: Software commands direct to the M425 stator... -
Page 3: M425 Introduction
The M425 also has a legacy mode so that it can be used as a direct replacement for the previous M420 Transducer. CHECK LIST... -
Page 4: Familiarisation
The M425 supports a variety of universal interface models. Once you are familiar with the transducer and its outputs Optional power supply: continue to install as normal. -
Page 5: Mechanical Installation
DATUM ELECTRONICS M425 TORQUE TRANSDUCER HANDBOOK MECHANICAL The objective is to align the shaft of the M425 Torque Transducer (sensor) with the torque. INSTALLATION The torque should where possible be driven through the centre line of the shaft. OBJECTIVE OF THE MOUNTING Unlike Disk Transducers that require very fine alignment tolerances when mounting, the M425’s longer shaft allows... -
Page 6: Which Way Round To Mount
This is to be used to secure the static body of the Transducer The M425 Transducer is calibrated to give a positive output and prevent rotation during operation. for clockwise torque and a negative output for counter clockwise torque. -
Page 7: Electrical Connection
The maximum cable length for the M425 Transducer is The M425 Transducer is supplied with a standard 3 metre normally 200 metres. For special applications with the right signal cable. This cable is terminated with a standard... -
Page 8: System Diagram
Datum M425 Torque Transducers provide simple connections to logging, monitoring and control system through both analogue and serial interfaces. Software is provided to access the primary Ethernet setup interface for the M425. Front M425 Transducer, Universal Interface and PC connections guide... -
Page 9: User Interfaces
UNIVERSAL INTERFACE Datum Electronic’s Universal Interface provides options for different operating environments. The universal interface will connect directly to the M425 Datum Electronics can provide the universal interface Torque Transducer. It supplies 12Vdc to power the Transducer package for either control enclosure application or heavy and converts the torque and RPM signal into the outputs industrial applications. -
Page 10: Versatile Bulkhead Mounted Indicator
ALTERNATE CONNECTION OPTIONS Designed for use in industrial and marine environments The M425 is compatible with a variety of other universal the Heavy Duty Indicator provides all of the facilities of the interfaces or indicators by correct cable and PIN Universal Indicator plus an extended graphical display. -
Page 11: Data Output
0.0001 is the zeroed strain, -0.0015 is the raw strain mV/V, The Series M425 Transducer can provide data either as an 0.00 is the RPM, individual reading or as parts of data packets. These can be configured using the interface software to suit most 21.312... -
Page 12: How Checksum Is Calculated
Technical Bulletin 1007. SAMPLE RATES AND RESOLUTION The M425 can output torque data at sample rates from 4 up to 4000 samples per second. The lower data rates provide resolution up to 1:560,000, at highest data rates the noise free resolution reduces 1:11,000. -
Page 13: Output Performance
= Rotor shaft RPM CS = Checksum 1:100000 PC Port Limitations Note: the M425 Transducer is capable of transmitting at the rates above. Some PC’s have limited port configurations that may not be able to cater for data rates at this level. -
Page 14: Output Data
READ MORE FROM YOUR DATA Within this data we can often see valuable characteristics at The M425 will provide you with accurate torque data. higher sample rates that show Torsional information that will The following graphs show examples of some data indicate system wear, vibration and changes in efficiency. -
Page 15: Specifications
(dependent on sample rate) Analogues: Sample Rate 1 to 4000 samples per second All four of the M425 Transducer’s analogue output channels can be configured for any of the following settings by the user: Output Baud Rate 9600 to 3Mbaud (see table 13) -
Page 16: M425 Shaft Stiffness And Load Parameters
DATUM ELECTRONICS M425 TORQUE TRANSDUCER HANDBOOK SPECIFICATIONS continued M425 shaft stiffness and load parameters Table No. 8 M425 Rated Rated Standard Overall Moment Bending Shaft Shaft Axial Total Total model load load length length loads at the proof ultimate loads... -
Page 17: M425 Mass And Dimensions (Mm)
This drawing and its associated design is the property of Datum Electronics Ltd. and may not be copied or used for any purpose other than that for which it is supplied, without the express written authority from Datum Electronics Ltd. -
Page 18: Pre-Calibrated And Tested
Within these ranges the Series 425 Electronics are engineered to fit a shaft coupling of a section of an existing drive shaft. These are fitted by Datum Electronics in the factory. They The data shown on the test certificate: have advantages where space is at a premium and a standard transducer cannot replace an existing component without •... -
Page 19: Diagnostics
ZERO OFFSET Check the scaling of the output device. The factory zero of the M425 Transducer will be declared on the calibration sheet. If the reading you have at zero If using the user software on a PC look at the torque differs from this value, look at the raw signal value from the calibration tab. -
Page 20: Maintenance
A transducer is defined as a device that converts one form of damage the transducer. Repeated loading to this level will energy to another. In terms of the M425 Torque Transducer reduce the fatigue life of the transducer and may cause small the transducer converts torque into serial data. - Page 21 DATUM ELECTRONICS M425 TORQUE TRANSDUCER HANDBOOK DATUM ELECTRONICS LIMITED TELEPHONE: +44 (0) 1983 28 28 34 FAX: +44 (0) 1983 28 28 35 EMAIL: support@datum-electronics.co.uk WEB: www.datum-electronics.co.uk DESIGNED BY WWW.PEPPERCREATIVE.CO.UK...
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