Related Manuals for Omega LDX-4
Summary of Contents for Omega LDX-4
- Page 1 User’ s Gui d e Shop online at omega.com e-mail: info@omega.com For latest product manuals: www.omegamanual.info LDX-4...
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Page 2: Table Of Contents
Environmental Connecting the Power Supply Notes Connecting the Signal Out The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice. -
Page 3: Safety Information
2.0: Safety Information Terms in this Manual WARNING statements identify conditions or practices that could result in personal injury or loss of life. CAUTION statements identify conditions or practices that could result in damage to the equipment or other property. Symbols in this manual This symbol indicates where applicable cautionary or other information is to be found. -
Page 4: Introduction
4.0: Installation 4.1: Mounting The LDX-4 may be mounted in a variety of ways and in any attitude. Ensure that there is enough space for the cover to be removed to allow for internal adjust- ments. Space should also be allowed for the transducer connector, EMC glands (if fitted) and cabling. It is recommended that the LDX-4 case be connected to earth... -
Page 5: Operational Environment
The cable screen should be connected to the LDX-4 case at cable entry point. The case of the LDX-4 should be connected to a local ground. An EMC cable gland is recommended. This is supplied with the LDX-4. -
Page 6: Connecting The Transducer
4.3: Electrical Connections (continued) For best performance in electrically noisy environments, the case of the LDX-4 should be connected to a local earth. This can be achieved via the mounting bracket. This earth connection is not a safety earth, but is part of the overall elec- trical screening scheme. -
Page 7: Connecting The Power Supply
4.5: Connecting the Power Supply The LDX-4 requires a dc power supply in the range 10-30 V. A fully regulated supply is not required, but the voltage at the input to the LDX-4 must remain within specification. Ideally, the 0 V at the power supply should not be connected... -
Page 8: Voltage Connections
+ 10-30 V V out + V E C urrent The total loop resistance (resistance of measuring equipment and wiring) must not exceed specification. Note: The LDX-4 is not loop-powered, so a power supply must not be used in-line with the current output. -
Page 9: Using An Emc Cable Gland
4.7: Using an EMC Cable Gland To ensure the cable screen is properly connected to the LDX-4 case, an EMC cable gland should be used. This is supplied as an optional extra. The diagrams below assume a single 4-way cable is being used. Remove the grommet and fit the cable gland as shown below. -
Page 10: Setting Up The Transducer And Ldx-4
5.0: Setting up the Transducer and LDX-4 The LDX-4 may be set-up with output signals anywhere within a ±10 VDC or ±20 mA range. Typical outputs are ±10 VDC, ±5 VDC, 0-10 VDC and 4-20 mA. These procedures apply to voltage and current output. -
Page 11: Basic Procedure
Adjust the position of the transducer to give as near to zero output as practi- cal. This is the centre of the mechanical range. If the transducer cannot be centered for practical reasons an offset will remain within the system. There may be noticeable interaction between Gain and Offset adjustment. This does not prevent the LDX-4 being set-up, however several itera- tions may be required when adjusting Gain and Offset. Please contact your supplier if guidance is required. - Page 12 If your transducer is known to be outside of the standard sensitivity range, the X2, X4 or DIV2 links will have to be used. See section 5.3. STEP 4 - Setting Uni-polar Full-Scale Output (adding an offset) Move the transducer to the null position. LDX-4 output will be 0 V or 0 mA. Apply offset using the +VE, -VE, 5 V and 10 V links and then adjust the Fine Offset control to set the offset precisely.
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Page 13: Half-Bridge Version
GP911-1 sensitivity is 210 mV/V/mm GP911-1 range is ±1 mm LDX-4 primary voltage 3 V Transducer Full Range Output = 210 x 3 x 1 = 630 mV (0.63 V) Set the X2, X4, DIV2 link as shown in the table below. -
Page 14: Specifications
6.1: Connecting the transducer B lue Half-Bridge Electrical Connections Red and Blue Energizing Y ellow Yellow Signal Red and Yellow In Phase for Inward Displacement C entre T ap Black Transducer Body Ground R ed 6.2: Setting up the Half-Bridge Transducer The setting up procedure is the same as LVDT transducers. -
Page 15: Mechanical And Connections
7.1: Electrical Parameter Value Comments Signal Output Output Voltage Range up to ±10 VDC into 1 KW see notes 3 and 4 Output Residual Noise <1 mVrms Output Current up to ±20 mA into 150 W see note 5 load Output Offset Coarse ±5 VDC (approx 10 mA) link selectable... - Page 16 The way in which the LDX-4 functions means a special configuration must be used for transducers outside of the standard range. This is selectable by links. The majority of Omega LVDT transducers are within the standard range. See section 5. LDX-4 can drive into a 1 KW load but this offers no advantage. 10-100 KW is recommended.
- Page 19 Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification.
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Page 20: Environmental
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