OD2 USER LEAFLET
Page 1: ...OD2 USER LEAFLET ...
Page 2: ...tended to operate from a power source that will not apply more than 48 volts DC between the supply conductors S2 2 Do Not Operate in Explosive Atmospheres To avoid explosion do not operate this product in an explosive atmosphere unless it has been specifically certified for such operation S2 3 Grounding the Product This product is grounded through the grounding conductor of the power supply S2 4 D...
Page 3: ...ial Inspection 6 2 3 Preparation for Use 6 2 4 Power Requirements 6 2 5 Working Environment 6 2 6 Physical Description 6 2 7 Mounting 7 3 OPTIONS 3 1 Introduction 8 3 2 4 20mA or 0 20mA Operation 8 3 3 4 20mA Operation 8 3 4 0 20mA Operation 8 3 5 Frequency Selection 9 3 6 Tuning Capacitor Selection 9 3 7 Gain Selection 10 4 ELECTRICAL CONNECTIONS 4 1 Terminal Designation 11 4 2 Transducer Connect...
Page 4: ...ntification 5 2 1 Mounting Holes 7 3 1 4 20mA Option 8 3 2 0 20mA Option 8 3 3 Gain Selection Switch 10 4 1 Connector 1 11 4 2 Connection 2 12 4 3 4 20mA Transmitter Connections 13 4 4 0 20mA Transmitter Connections 13 LIST OF TABLES 3 1 Frequency Selection 9 3 2 Switch Settings 9 3 3 Gain Selection Switch 8 10 4 1 Connector 1 11 4 2 LVDT Connections 11 5 1 Gain Selection 14 B1 1 Common Specificat...
Page 5: ...ainst which the instrument is tested 1 3 SAFETY CONSIDERATIONS Before operation the instrument and manual including the safety page should be reviewed for safety markings and instructions These must then be followed to ensure safe operation and to maintain the instrument in a safe condition 1 4 INSTRUMENTS COVERED BY MANUAL Attached to the top of this instrument is a name plate Fig 1 1 this manual...
Page 6: ...s a possibility that the supply cable connections will be reversed The transmitter is protected by an internal diode against possible damage caused by reversed polarity For correct operation 13V must be achieved at the transmitter at 20mA full scale the total resistance of the installed indicator and cable must not be too large As a general guide do not exceed the value of R calculated using the f...
Page 7: ...z 10V m ESD EN610004 4 4kV contact and 8kV air Installation Guidance The type of cabling used to connect the OD2 depends on the electrical environment In a clean environment unscreened twisted pairs provide a low cost suitable connection in an environment where electrical noise is higher such as installation inside a machine or on the factory floor it is advised to use screened cables Do not route...
Page 8: ...ed to connect to the power supply and indicator Fig 3 1 4 20mA Option The transmitter draws 4mA to operate the electronics and the position of the transducer controls a 0 16mA current sink wired in parallel Therefore the position of the transducer is indicated by the current consumption and a broken cable by zero current Due to its inherent fault indication the need for only two wires and its low ...
Page 9: ...acitance for the transducer in use Transducer SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 SM 1 On On Off Off On On Off On SM 3 On On Off Off Off On Off Off AC 15 100 Off Off On On Off Off On Off AC 25 50 Off Off On On Off On Off Off AC 250 Off Off On On Off Off On On AX1 to 5 Off Off On On On On On Off MACH 1 Series 5kHz BS 1 5 BS 15 Off Off On On On On On Off BS 2 5 BS 7 5 Off Off On On On On Off Off BS 5 BS...
Page 10: ... allow a gain adjustment of 5 and has an input range of 0 to 320mV for a 4 20mA output In the Lo position normal for displacement transducers the span pot RV2 will allow a gain adjustment of 5 and an input range of 0 to 150mV for a 4 20mA output ref Table 5 1 Table 3 3 Gain Selection Switch 8 5 6 7 4 3 2 1 Span Zero Gain Switch On RV1 RV2 2 3 4 5 6 7 8 1 Gain Selection Switch 8 Lo Hi 7 8 7 8 ...
Page 11: ...mber Designation 1 Excitation 2 Excitation 3 Input 4 Input Table 4 1 Connector 1 Fig 4 1 Connector 1 4 2 TRANSDUCER CONNECTIONS LVDT Connections The following connections for standard Solartron transducers should be made AX AC SM AE Series and MACH 1 5kHz Pin Number Function Red 1 Excitation Blue 2 Excitation White 3 Demodulator Input Green 4 Demodulator Input Yellow to White or Green via resistor...
Page 12: ...erse connections for the green and white wires AX AC series or the black and red wires MACH 1 series 4 4 CONNECTING INSTRUMENTATION Connections should be made with no power applied to the OD2 Once connections have been made pass the wire through the grommet in the case If required provide some cable retention to prevent unwanted disconnection from the terminal block Do not operate the OD2 unit wit...
Page 13: ... fault indication together with its low susceptibility to electrical noise and cable resistance and the need for only two wires make the 4 20mA Transmitter ideal for use in industrial environments Fig 4 3 4 20mA Transmitter Connections A 0 20mA Transmitter Figure 4 4 works on the same principle but without linking the two current drives It can therefore be used with a simpler indicator although it...
Page 14: ...o 18 6 1 1 to 3 4 7 to 23 3 1 3 to 6 6 BS 25 6 8 to 34 0 1 9 to 9 6 8 5 to 42 5 2 4 to 12 0 Table 5 1 Gain Selection Note The upper gain limit will be set by the transducer For example although the 4 20mA electronics with low gain will allow an AX transducer to be used over the stroke range E2 5mm 0 31in it is only a 1mm 0 24in transducer so E1mm E0 24in is the practical limit 5 2 ZERO ADJUSTMENT ...
Page 15: ...isfactory stroke range 6 1 2 0 20mA Transmitter Move the transducer to the 0mA end of its required travel and adjust the Zero control to give 0mA on an indicator The control should be set for just 0mA since the current cannot go negative and a wide range of Zero control may produce 0mA It may be necessary to slightly adjust the Span con trol clockwise in association with Zero control in order to a...
Page 16: ... on transducer calibration sheet c Do not extend beyond standard cable length fitted to transducer Where screen is used connect to case of plug Ensure that elsewhere the screen is isolated electrically Cable colours are as fitted to Solartron transducers Increase of element impedance marked P gives a positive going voltage output Note The black lead should only be connected if the transducer case ...
Page 17: ...100 on maximum gain Case Size 120mm x 80mm x 54 5mm Output protection Output open short circuit protected Weight 400g Output ripple 5kHz 0 1 rms maximum Mounting Four 4 Fixing Holes Output filter 25Hz cut off critically damped Termination Connector Screw Terminals Effect of Supply Change Negligible Cable Gland Accept wire 1 to 5mm dia Effect of Temperature Change Zero 0 01 per o C typical 0 60o C ...
