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Telemetry System

Manual Vers. 2.7

2.1.3 Additional Channels for SCT Temperature and Supply Voltage

The extra channel of the SCT for temperature is also used as a reference for thermo couple
sensors.

Measurement range:

-30°C

– +100°C

Resolution:

12 bit

Sampling rate:

25 Hz

The internal measurement of supply voltage can be used to monitor the battery voltage or to
check the quality of inductive power supply.

Measurement range:

- 41.5 V

– + 41.5 V

Resolution:

12 bit

Sampling rate:

25 Hz

Содержание CAEMAX DX

Страница 1: ...CAEMAX Technologie GmbH Bunzlauer Platz 1 Phone 089 61 30 49 0 info caemax de D 80992 M nchen Fax 089 61 30 49 57 www caemax de Manual DX Telemetry System...

Страница 2: ...Technical data 15 2 3 2 Connections 16 3 Quickstart 18 3 1 Connect the DX RCI 18 3 2 Connect the DX SCT 18 3 3 Turn the DX RCI on and off 18 3 4 Configure the DX with a PC 18 3 5 Add a New SCT 22 3 5...

Страница 3: ...Menu Options 56 4 2 15 Menu Load Save 57 5 Energy Supply of SCTs 58 5 1 Power Consumption and Supply Voltage 58 5 2 Battery Supply 59 5 3 Integrated Rechargeable Batteries 59 5 4 Ring Stator 59 5 4 1...

Страница 4: ...82 10 Questions Answers 83 10 1 Inductive Power Supply Troubleshooting 83 10 2 Integration of SCTs 86 10 3 Changing the transmission frequency of SCT and RCI 86 10 4 Unstable signal when connecting mo...

Страница 5: ...The DX telemetry system consists of one receiver unit RCI and up to four multi channel transmitters SCTs Up to 6 data channels per transmitter can be recorded Measurement data are digitalized at the...

Страница 6: ...and process electronically measured variables No liability will be accepted by the manufacturer when the system is not used as intended The system is designed for the signal processing of strain gauge...

Страница 7: ...delivered in one case Contents 1 Receiver Control Interface RCI 2 Signal Conditioning Transmitter SCT 3 Ethernet cable 4 Rod antennas 5 Power supply 6 Manual 7 Optional planar antennas 8 Optional ring...

Страница 8: ...MHz ISM band optionally 2 4GHz Transmission power Max 10dBm will be adjusted as required and according to the national restrictions LBT procedures included Data transfer Package transfer with error d...

Страница 9: ...ti aliasing filter 6 pole Butterworth with cutoff frequency at 1 5 of the sampling rate Bridge excitation 4 096 V max 40mA short circuit proof Bridge balance double measurement range can be adjusted v...

Страница 10: ...temperature is also used as a reference for thermo couple sensors Measurement range 30 C 100 C Resolution 12 bit Sampling rate 25 Hz The internal measurement of supply voltage can be used to monitor...

Страница 11: ...Ch1 Bridge Input 3 IP2 Inductive Power 2 10 I1 Ch1 Bridge Input 4 DC DC Power Ground 11 I6 Ch 4 High Level SE 5 EX Excitation 12 GND Analog Ground 6 EX Excitation 13 I5 Ch3 High Level 7 I4 Ch2 Bridge...

Страница 12: ...ridge Channel 1 Pad 5 Pad 6 Pad 10 second path is added in the DX R R R Channel 2 Pad 5 Pad 6 Pad 9 second path is added in the DX R R R Channel 3 Pad 5 Pad 6 Pad 8 second path is added in the DX R R...

Страница 13: ...ential Channel 1 Pad 10 Pad 9 Thermo element Channel 2 Pad 8 Pad 7 Thermo element 2 2 4 Thermo couples Single Ended Channel 1 Pad 10 Pad 12 Thermo element Channel 2 Pad 9 Pad 12 Thermo element Channel...

Страница 14: ...emetry System Manual Vers 2 7 14 92 2 2 5 High Level Voltage Differential Channel 5 Pad 13 Pad 14 Pad 5 V Voltage signal 2 2 6 High Level Voltage Single Ended Channel 6 Pad 12 Pad 11 Pad 5 V Voltage s...

Страница 15: ...T max 400 1 Perspective 85 no preferred view angle TFT approx 70 Input interface Rotary multi selector with five keys Analog outputs 6 BNC jacks freely assignable Output range 10 V with xed frequency...

Страница 16: ...RCI 9V 36V Please note These connectors are not designed to supply a ring stator or stator head Power jack External power supply connector USB jacks USB 2 0 Full Speed 12 Mbit for Plug and Play config...

Страница 17: ...Pin Assignment of D Sub CAN Connector 9 pol Figure 6 pin assignment of D Sub CAN connector pin CiA name function 1 not used 2 CAN_L CAN_L dominant low 3 CAN_GND GND 4 not used 5 not used 6 not used 7...

Страница 18: ...ansmitting measurement data Please refer to Section 2 2 for more information on power input connection Note To check whether voltage application to drive the SCT is sufficient measure the strain gauge...

Страница 19: ...ter To do this with Windows 7 open the Network and Sharing Center and click on LAN Connection In the LAN connection dialog select Properties Administrator privileges required Figure 8 LAN connection s...

Страница 20: ...on properties Now select Use the following IP address type in the desired IP address and confirm with OK Figure 10 IP address If you don t succeed in connecting to the DX please check your firewall se...

Страница 21: ...2 168 0 212 Figure 11 DX menu You are now able to conveniently configure the DX using your PC Please note The following steps 3 5 to 3 10 can be done either with the RCI scroll wheel or with your web...

Страница 22: ...X Please note When searching for or programming a new SCT this device has to be the only one to be active Therefore turn off all other SCTs in the vicinity You need to type in the last three digits of...

Страница 23: ...n a Logical Number from 1 4 to the device with each SCT being assigned a different number Please note Serial Radio transmission signals with the DX are transmitted within a window consisting of four s...

Страница 24: ...Repower transmitter message with OK Figure 15 Message Program done Please note The message Program done only indicates that the configuration data has been transmitted For successful programming make...

Страница 25: ...n gauges Half bridge strain gauges with integrated bridge completion DC differential DC single ended Thermo differential Thermo single ended Channels 7 and 8 detect reference temperature and supply vo...

Страница 26: ...channel To create a new channel follow the instructions in section 3 6 1 Select the menu item Channels Device X Channel X_Y with Device X being the recently added SCT Channel X_Y may be an arbitrary...

Страница 27: ...being an arbitrary channel of Device 1 except additional channels Reference Temp and Supply Voltage With Sample Rate select the desired sample rate If the sample rate of one channel has been defined t...

Страница 28: ...3 channels in use while the second only has 1 The max sample rate should be 1200 Hz When configuring with a web browser confirm your input with the Set button to resume it to the DX Now select Program...

Страница 29: ...supplied with power and radio transmission from RCI to SCT is undisturbed Otherwise the SCT can t be programmed successfully Confirm the message Program done with OK Now continue with programming one...

Страница 30: ...ring mode When configuring with a web browser confirm your input with the Set button to resume it to the DX Please note Zero adjustment is permanently stored in the DX and is reloaded when the system...

Страница 31: ...Dx Telemetry System Manual Vers 2 7 31 92 Figure 20 Strain gauge channel configuration...

Страница 32: ...ange in the fields Range min and Range max The measurement range resolution is 16 bits Please note The measurement range can be increased decreased by powers of two and is centered on zero 3 6 5 3 The...

Страница 33: ...e programmed after the autozero adjustment Channels Channel X Program 3 6 6 3 Measurement Range Enter upper and lower bound of desired measurement range in the fields Range min and Range max The measu...

Страница 34: ...ct the active checkbox for this message to be transmitted in measuring mode In the field Data select the channels to be transmitted max 4 for a message of 8 bytes Define the desired data format unchec...

Страница 35: ...nowledge function If desired type in a data compression factor in the field Send Rate Sample Rate When configuring with a web browser confirm your input with the Set button to resume it to the DX 3 7...

Страница 36: ...This menu item is only displayed in your browser not in the RCI Select the dbc file from the file list default name DX_CAN dbc Figure 25 Download dbc file If there is no network connection established...

Страница 37: ...on With Source select the data channel to be displayed Check the min max 10 V 10 V box to set the upper lower bounds of the measurement range see 3 6 4 3 to 10 V 10 Volts If the box is unchecked the m...

Страница 38: ...th DEFAULT dxp as file name it is immediately loaded when restarting the DX 3 9 1 Save Configuration create dxp File Select Load Save With File Name type in the desired file name Please note When choo...

Страница 39: ...ebooting Select Load Save and type in DEFAULT as File Name Select the Save button Confirm the message The configuration selected is now automatically loaded at restart 3 10 Start Measurement 3 10 1 Me...

Страница 40: ...lect the sub item Display X from the Measure item Select which channels you want to be displayed from the dropdown menu Type in the number of digits to be displayed in the Decimal section including it...

Страница 41: ...utton to trigger zero balancing for all selected channels see section 0 3 10 3 3 Switch Shunt Resistance On and Off To connect the shunt resistance for testing purposes click on Sh On Now an internal...

Страница 42: ...utomatically switches to measurement mode after booting It is not necessary to start the measurement manually with Measure Start Select Options Activate the Auto Measure Start checkbox When configurin...

Страница 43: ...Dx Telemetry System Manual Vers 2 7 43 92 4 DX Configuration Menu In this section all functions of the DX configuration menu are described in detail 4 1 Menu tree...

Страница 44: ...Dx Telemetry System Manual Vers 2 7 44 92 Menu tree continued...

Страница 45: ...e you will lock you self out Error correction An additional hardware error correction can be activated when using the 2 4 GHz version This feature will reduce the signal bandwidth Packet mode Reserved...

Страница 46: ...frequency offers a bandwidth of approx 6 kS s The modification of this setting is only activated after programming and rebooting the SCT IMPORTANT Always set the SCTs to the desired frequency first Ot...

Страница 47: ...ORTANT Make sure that the SCT is sufficiently supplied while programming and that no other SCT operates with the same frequency Delete Delete this SCT from the configuration OK Exit menu IMPORTANT In...

Страница 48: ...they are not blocked by Channel 1 In this case the following settings are available Half bridge strain gauges with integrated bridge completion DC single ended Thermo single ended Channel 3 see Channe...

Страница 49: ...ut a zero adjustment for this channel If the adjustment is to be permanently stored in the SCT the corresponding channel must be programmed afterwards Channels Channel x Program Sample Rate Here the d...

Страница 50: ...f it is not ticked the conversion can be freely programmed see Sample 1 2 Sample 1 Sample 2 A calibration line is defined via Sample 1 and Sample 2 which determines the conversion of a physical signal...

Страница 51: ...mits data without the sender s acknowledgement of receipt Send Rate Specifies the sample rate to be transferred by the CAN output Only one in x value is transferred to the CAN bus File Name Enter the...

Страница 52: ...Message Enter the desired CAN Id for the Shunt Message in decimal or hexadecimal hex Switch the CAN Id between decimal and hexadecimal active Activate the message The message will be received via the...

Страница 53: ...onvenient to transmit these in an 8 byte CAN message since this causes less data load on the CAN bus Bit Offset Indicated the starting point of the 16 data bits of the respective channel Sign Specifie...

Страница 54: ...u Please note In order to change settings permanently you have to record your current configuration with the Save button in the menu Load Save 4 2 12 Menu Measure Display x 1 8 Choose the channel to b...

Страница 55: ...or which Autozero has been selected are set to zero If the adjustment is to be permanently stored in the SCT the corresponding channel must be programmed afterwards Channels Channel x Program Sh off S...

Страница 56: ...wer Standard Error Handling When a transmission error occurs the last displayed value is retained When unchecked the negative full scale value will be output RF Level Display in dbm Switches the signa...

Страница 57: ...e file name to be loaded or saved The parameter file DEFAULT dxp is loaded automatically when the system is booting You can select existing filenames or enter a new file name Load Load the selected pa...

Страница 58: ...lem supply by battery rechargeable battery inductive supply by ring stator or stator head 5 1 Power Consumption and Supply Voltage Power consumption of the SCT is amongst others mainly dependent on th...

Страница 59: ...offers solutions with rechargeable batteries with rechargeable and SCT being integrated in one housing for numerous standard applications Please contact us for further details 5 4 Ring Stator The CAEM...

Страница 60: ...ciency 0 1 Transmission frequency 30 60 kHz automatically controlled Supply voltage 9 36 V DC Protection class IP 67 Connecting cable Lemo plug banana plugs length 5m Connectors Lemo 5 4 3 Installatio...

Страница 61: ...en it to the appropriate length After a check up of length and shape drill a hole at each end of the copper band to fix it with 2 M5x6 screws to the stator housing refer to Figure 33 The soft copper m...

Страница 62: ...CT to the axle and connect it The connection strands of the secondary coil have to be connected with the SCT inputs IP1 and IP2 refer to section 2 2 Fix the stator ring with two M5x6 bolts to the stat...

Страница 63: ...uency of the alternating electrical field at the stator ring is automatically set and readjusted by the stator electronics The operating point of the system is dependent on a variety of factors mainly...

Страница 64: ...Dx Telemetry System Manual Vers 2 7 64 92 Figure 35 Adjusting the stator power via potentiometer screw For more detailed troubleshooting instructions please refer to section 10 1...

Страница 65: ...the stator To avoid that provide sufficient heat dissipation e g by installing the stator on a metallic surface Install the secondary coil to the axle as described in section 6 5 2 The transmission co...

Страница 66: ...take several minutes If you measure less than 4 096 V DC between EX and EX check the effective value VAC of the alternating voltage between IP1 and IP2 If 0 V VAC 0 6 V increase the power of the stat...

Страница 67: ...lemetry systems consist of electrostatic sensitive components Operation only by qualified personnel This is a class A device i e suited for industrial use This device may cause radio interference in t...

Страница 68: ...ces When mounting the SCT at high speeds and large shaft diameters CAEMAX offers axial and radial SCT housings designed for higher centrifugal forces Make sure the connections remain free of tensions...

Страница 69: ...tandard application of the DX telemetry system All steps for attaching a secondary winding on the shaft are shown below The required materials can be ordered at CAEMAX DX mounting kit 6 5 1 Overall Vi...

Страница 70: ...uired length it should be long enough to wrap around the shaft s circumference Pull off the protective film and glue the mu metal onto the shaft see figure 39 Its extremities must not touch in order t...

Страница 71: ...er band 8 Solder one strand to each of the copper band extremities the strands surface should be as large as possible 0 62 mm2 or AWG 20 and a maximum length of 100 mm These solder joints must not con...

Страница 72: ...n high speed or high temperature shafts CAEMAX offers special solutions half shells special casings etc For further questions and instructions concerning your individual situation please contact CAEMA...

Страница 73: ...ing and protection which can be customized in size and shape for your application 7 1 1 SCT casing with Breakout Cable Figure 43 SCT casing with breakout cable Technical data dimensions 72mm x 55mm x...

Страница 74: ...low I6 green GND blue I5 purple I5 7 2 DX Antennas For trouble free signal transmission in different applications select from a variety of antenna types 7 2 1 Planar Antenna Cable length approx 5 m op...

Страница 75: ...easily to the side mirrors of the vehicle Figure 45 DX side mirror antenna 7 3 DX Satellites In unfavorable transmission and reception conditions due to shading reflections etc Up to two satellite re...

Страница 76: ...1 2 Terminal Assignment of modified RCI Figure 47 Back of modified RCI SMA jack Ant1 Ant 2 Antenna plug Banana jack Power supply 9 V 36 V Power socket External power supply connection USB connectors...

Страница 77: ...ncremental angle sensor Technical Specification Diameter 100 mm Number of increments 8000 max measurable rotational speed 5999 rpm System accuracy 0 1 Working temperature 10 C 70 C Vibration resistanc...

Страница 78: ...d Maintenance Please note When installing the stator head take care to be compliant with the specified clearance dimensions see figure below In particular the distance between magnetic ring and stator...

Страница 79: ...f rotation fixed channel assignment Rot Speed Rotational speed fixed channel assignment Power 1 Power is calculated from the selected channel multiplied by the rotational speed Rot Speed according to...

Страница 80: ...Range min Minimum output value fix 1473 560 Range max Maximum output value fix 1473 560 Sample Rate Sample Rate equal to sample rate of SCT channels Change global sample rate with CHANNELS DEVICE X CH...

Страница 81: ...nge min minimal value 5999 97 rpm fixed Range max maximal value 5999 97 rpm fixed Sample Rate Sample Rate equal to sample rate of SCT channels Change global sample rate with CHANNELS DEVICE X CHANNEL_...

Страница 82: ...ted from channels Rot Speed and Channel_1 Range max Maximum measurement value calculated from channels Rot Speed and Channel_1 Sample Rate Sample Rate equal to sample rate of SCT channels Change globa...

Страница 83: ...ther information please contact info caemax de 9 3 Storage The telemetry system can be stored for later usage However it has to be protected from Electrostatic charging may destruct electronic parts H...

Страница 84: ...Dx Telemetry System Manual Vers 2 7 84 92 10 Questions Answers 10 1 Inductive Power Supply Troubleshooting...

Страница 85: ...Dx Telemetry System Manual Vers 2 7 85 92...

Страница 86: ...Dx Telemetry System Manual Vers 2 7 86 92...

Страница 87: ...Set the RCI to the same frequency as the SCT to which you want to establish a connection in the menu under Devices Base RCI Radio Frequency Default setting at delivery 864 MHz 4 Locate SCT 1 Devices...

Страница 88: ...described under 11 to the new transmission frequency freq2 18 Test whether SCT3 and SCT4 are found as described in section 13 19 The system is ready for operation Caution SCT1 and SCT2 are now configu...

Страница 89: ...sktop Before the update please note The FIRMWARE hex is renamed to FIRMWARE sav after the update If this file already exists in your root directory it must first be deleted In addition the root direct...

Страница 90: ...new firmware is automatically installed Confirm with OK Check the firmware status in the Options menu item 10 5 3 2 Upload via SD card Turn off the RCI Remove the SD card right side and insert it int...

Страница 91: ...d technical specification have been applied EN 61010 1 safety requirements for electrical equipment for measurement control and laboratory use EN 55011 industrial scientific and medical radiofrequency...

Страница 92: ...ensitivity calculation 1 62 3 d M S MAX T STEEL 12 1 2 Hollow shaft sensitivity calculation 1 62 4 4 I A A TMAX STEEL d d d M S 12 1 3 k factor sensitivity calculation 2 k S S STEEL S Sensitivity in m...

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