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Antenna Controller

sat-nms ACU-ODU-DC

User Manual

Version 5.0.002

[email protected]

www.satnms.com
www.satservicegmbh.de
Tel +49 7738 99791-10

Summary of Contents for SatService sat-nms ACU-ODU-DC

Page 1: ...CU ODU DC User Manual Version 5 0 002 Copyright SatService Gesellschaft f r Kommunikationssysteme mbH Hardstrasse 9 D 78256 Steisslingen satnms support satservicegmbh de www satnms com www satserviceg...

Page 2: ...2 2 Limit switch and emergency switch connection 15 4 2 3 Motors connection 15 4 2 4 Mains connection 16 4 2 5 Ethernet connection 16 4 3 Start up 16 4 3 1 Setting the IP Address 18 4 3 2 Limit switch...

Page 3: ...8 2 Pointing Motor Control 55 8 3 Steptrack 56 8 3 1 The sat nms Steptrack Algorithm 57 8 3 2 ACU and Beacon Receiver 58 8 3 3 Smoothing 59 8 3 4 Steptrack Parameters 60 8 4 Adaptive Tracking 61 8 4 1...

Page 4: ...1 sat nms ACU ODM 3 2 Power supplies for sat nms ACU ODM 3 3 Power supply for motor drivers 3 4 Motor drivers 3 5 Circuit breakers 3 6 Contactor 3 7 Terminals 3 8 Heater 3 9 Optional air ventilation 4...

Page 5: ...nd Tracking 9 Specifications 1 Introduction The sat nms Antenna Control Unit is an antenna controller positioner with optional satellite tracking support It may be operated as a standalone unit or in...

Page 6: ...os signals SSI Interface SSI is a high speed serial interface used by modern digital position encoders DC Voltage Interface The third position encoder interface module contains an A D converter which...

Page 7: ...ications At the end of the document the specifications applicable to the sat nms ACU are summarized in this chapter Support and Assistance If you need any assistance regarding our ACU don t hesitate t...

Page 8: ...tor The other components in the cabinet might be jammed through the harmonic waves the frequency inverters inject into the motor wires Use only double shielded twisted pair cables e g CAT7 Ethernet ca...

Page 9: ...please refer to chapter 5 Operation Another interesting chapter is belonging the ACU ODM is 4 3 Startup here you find also the description how to change the IP address of the unit in order to integrat...

Page 10: ...3a 3 4 Motor drivers Depending on your requirements up to 3 motor drivers are integrated into the ACU ODU These are DC power drivers with power rating of 15A The standard version has a voltage rating...

Page 11: ...ignal description type SP speed speed selection connect 24VDC for low speed 0V or floating selects high speed IN COM COM control GND for control voltage IN ER error in OK condition this pin is connect...

Page 12: ...t to 40 C that means the fan switches on as soon as the temperature of the cabinet raises above 40 C We strongly recommend not to set this threshold below 40 C The reason for this is that in the winte...

Page 13: ...onnect all the units and the mains 4 2 1 Angle encoder connection The angle encoders have to be connected directly to the core module of the sat nms ACU ODU which is called sat nms ACU ODM Inside the...

Page 14: ...wing Use a shielded twisted pair cable Connect the cable shield either to pin 1 8 at the ACU or to the ground at the resolver housing Never connect the shield at both ends this will introduce a ground...

Page 15: ...witch connection Limit switches have to be connected directly to the sat nms ACU ODM emergency switch has to be connected to the terminals bottom right of the cabinet Please refer to the schematics fo...

Page 16: ...rs Use shielded cable only Take care that the shield is connected to the PE terminal of the motor driver and is NOT connected to the crankcase Please refer to the schematics shipped together with your...

Page 17: ...up the ACU s IP parameters the PC used for configuring and the ACU must either be connected to the same Ethernet hub or must be connected directly with a crossover cable The initialization program doe...

Page 18: ...ouble click to the ChipTool exe program in the ChipTool directory 4 When the ChipTool program is running the program shows a list containing at least one entry describing the actual network parameters...

Page 19: ...apter 4 2 1 Pin description 1 Configure the desired type of detector on the setup page 2 Set the soft limits to the expected values at first it is ok if you do this approximately later on you need to...

Page 20: ...on mode to save targets and finally to set the sat nms ACU RMU into service In chapter 5 Operation you find a detailed description of the pointing and tracking parameters To use the function pointing...

Page 21: ...door module is designed to be controlled over a network link using a standard web browser This means in practice that the user interface to the ACU appears in your browser window after you type in the...

Page 22: ...s Setup This button switches to the Setup page which lets you inspect or change less common parameters which usually are set only once to adapt the ACU to it s working environment Info After a mouse c...

Page 23: ...there is a field reserved which contains some state information for this axis While the motor is running MOVING is displayed at this place If the motor has been stopped due to a fault or an emergency...

Page 24: ...dule are shown in this field With tracking option this field is always empty AZ EL Tracking State If the ACU has the tracking option installed and ADAPTIVE tracking is selected these give some informa...

Page 25: ...Clicking to the eraser icon clears the selected memory location after a confirmation inquiry Numeric orbit position The table contains an additional row at the bottom labeled Numeric orbit position Cl...

Page 26: ...ired for this You have to create such a data file and copy it with FTP to the ACU before you can use this mode SatService GmbH provides a PC software which lets you easily create data files for progra...

Page 27: ...ance If the delay is too short the beacon voltage does not reach its final value the steptrack does not properly recognize if the signal goes better or worse after a test step If the delay is too long...

Page 28: ...individually for each axis Normally you will set both axes to LARGE which leaves the model selection fully to the ACU s internal selection algorithms In cases where the ACU seems to be too optimistic...

Page 29: ...tor driver type for this axis to NONE at the Setup page before you set the outputs manually The Test page is re read by the Web browser about once a second Some browsers seem to ignore mouse clicks oc...

Page 30: ...PARALLEL mode unless special conditions require a sequential antenna movement The performance of the ACU in terms of pointing speed and wind load compensation will be much better in PARALLEL mode Date...

Page 31: ...you can tell the ACU if the polarization is not to be controlled by the ACU If you are using multiturn SSI encoders you will have to scale the reading See Calibration scale below Pre scale offset The...

Page 32: ...e motor direction This is the configuration many frequency inverters use In DUAL START mode the FWD signal switches the motor on in forward direction REV activates the motor in reverse direction This...

Page 33: ...he serial interface at CON8 pins 1 3 The ACU automatically sets the antenna s geodetic location to the values received and synchronizes the clock to the GPS timestamps If no NMEA messages are received...

Page 34: ...s place SNMP system location The ACU replies to MIB II sysLocation requests with the text entered at this place SNMP system contact The ACU replies to MIB II sysContact requests with the text entered...

Page 35: ...is not yet available at ACU RMU and ACU19 Version Startup Set parameter RS485 address on the ACUs Setup page to TERM This enables communication between the ACU and the sat nms handheld Connect the Han...

Page 36: ...ze small steps x keypress x is the value that was set on the setup screen large steps 10 x keypress continuous mode the antenna moves as long until the button is pushed or a limit switch or limit valu...

Page 37: ...ys named ENTER and CLEAR Some keys have a second meaning The first meaning of the keys remains constant through most levels of the menu The ENTER key descends in the menu tree accepts and stores chang...

Page 38: ...are shown alternately the message blinks on the display The following messages may be displayed at the corresponding position in the display At the corresponding angle position FAULT General ACU Fault...

Page 39: ...wait about a 30 minute for automatically return 6 4 Set tracking mode In the SELECT TRACKING MODE menu you can change the tracking mode as shown below OFF STEP ADAPTIVE PROGRAM For detailed informati...

Page 40: ...be displayed in the main screen with Standby blinking in the second line Choose the Menu entry a second time or press 2 shift and together to leave this Mode 6 8 Set az el pl by editing Numeric Parame...

Page 41: ...replied and internally used value is limited to the applicable minimum or maximum To read a parameter from the ACU instead of a new parameter value a question mark is sent name The ACU replies the ac...

Page 42: ...he remote control of the ACU manually 7 3 The RS232 remote control interface Beside the network interface the ACU also provides an RS232 serial port which can be used to control the device remotely De...

Page 43: ...d for computer based remote control This setting is also used for allowing communication to an optional frontpanel display and keyboard if implemented If TERM is selected the serial interface is used...

Page 44: ...ting asca 0 000000 100000 000000 AZ Calibration scale asen SSI 13B SSI 13G SSI 17B SSI 17G SSI 18B SSI 18G SSI 19B SSI 19G SSI 20B SSI 20G SSI 24B SSI 24G RESOLVER VOLTAGE NONE AZ Position sensor type...

Page 45: ...ilities 1 cmod DISABLED ENABLED Linear Circular switch coty NONE Compass type 2 cpos r o LINEAR CIRCULAR SWITCHING INVALID Lin Crc switch position ctar LINEAR CIRCULAR UNKNOWN Linear circular switch d...

Page 46: ...epoch epos r o 0 000 90 000 EL Pointing eraw r o 00000000 FFFFFFFF EL raw pointing esca 0 000000 100000 000000 EL Calibration scale esen SSI 13B SSI 13G SSI 17B SSI 17G SSI 18B SSI 18G SSI 19B SSI 19G...

Page 47: ...e Web UI 0 releases the stop RESET at the Web UI nick r o 90 0 90 0 Nick angle niko 90 0 90 0 Nick offset note character string Note obit 00000000 FFFFFFFF Output bits described below orbt 180 000 180...

Page 48: ...pstp 0 000 90 000 PO Step delta ptar 90 000 90 000 Pol target value ptot 0 32000 msec PO Motor timeout roll r o 90 0 90 0 Roll angle rolo 90 0 90 0 Roll offset save 0 99 Save target scnt r o 0 65535 S...

Page 49: ...eset tracking memory trty NEVER ONCE FOREVER Tracking retry on fault trty NEVER ONCE FOREVER Tracking retry on fault tsta r o character string Tracking state tstp 1 100 Tracking step size wdog OFF ON...

Page 50: ...inting angles for a given target number tdsc 12 e g is interpreted by the ACU as a request to report the target description for target no 12 The reply to this command is something like tdsc ASTRA 19 2...

Page 51: ...ceiver fault 27 LIMIT limit switch summary 28 AZSTOP azimuth stopped 29 ELSTOP elevation stopped 30 PLSTOP polarization stopped 31 GPSFLT GPS receiver fault Bit definitions in obit output bits The obi...

Page 52: ...tor control 22 OUT_AUX5 not used 23 OUT_AUX6 not used 24 OUT_SUMMARY summary fault relay 1 OK 25 OUT_TRACKING tracking fault relay 1 OK 26 OUT_BCPR1 reserved for beacon receiver frequency select 27 OU...

Page 53: ...e IP address 10 0 0 1 the complete URL for the request is http 10 0 0 1 point fmt txt The fmt txt parameter forces the power sensor to reply a one line text document rather than the HTML coded page wh...

Page 54: ...he following types of positional sensors SSI SSI type digital position encoders are the first choice for antennas which are setup from scratch They are precise reliable and provide a standardized inte...

Page 55: ...xis If the measured position value differs from the target value the motor is activated to compensate this difference It makes no difference if a new target value has been commanded or if the antenna...

Page 56: ...nnect one of these two signals select the one which matches the polarity the motor driver expects Remark for operation in the northern southern hemisphere Look through the antenna to the satellite for...

Page 57: ...the ACU does several very small steps Using the position and beacon level values of all steps in the cycle the ACU calculates the peak position by aligning the approximated antenna pattern to the meas...

Page 58: ...time than for a geostationary satellite 8 3 2 ACU and Beacon Receiver To perform a step track the ACU requires the actually measured beacon level as a rate of the received signal quality and therefore...

Page 59: ...t the beacon receiver these values may be adjusted too a preferable scale is 0 5V dB for 20dB usable range The offset should be adjusted that the receive level at clear sky conditions leave a headroom...

Page 60: ...same subnet The LBRX beacon receiver must be configured for the correct LO frequency The displayed receive frequency must be the true RX frequency rather than the L band frequency At the sat nms LBRX...

Page 61: ...range you should check if the beacon frequency is set properly The frequency must be the true receive frequency at the antenna entered in MHz not an L band frequency or other IF Trackingmode The trac...

Page 62: ...ta points used to evaluate a model is limited the measurements values are distorted due to inaccuracy and noise The more complicated a model is the more susceptible it is to noise For practical usage...

Page 63: ...half 3dB beam width to evaluate this measure The ACU presents this figure as a percentage value The ACU selects the adaptive tracking model following a scheme as illustrated in the diagram above Belo...

Page 64: ...he ACU raises a fault if at least one axis exceeds the threshold value If this happens three consecutive times the models gets reset all data in the tracking memory gets marked invalid 8 4 2 The Track...

Page 65: ...ed With this function you should keep in mind that the tracking memory contents becomes useless after about 24 hours 8 4 3 Adaptive Tracking Parameters The behaviour of the adaptive is adjustable with...

Page 66: ...o 50 Setting it to 0 switches the threshold monitoring completely off 8 5 Program Tracking Program tracking is a tracking method which lets the antenna follow a path which usually has been calculated...

Page 67: ...the following cases for a fault of one axis TIMEOUT and FAULT are releasable during a tracking cycle A STOPPED fault have to be released with the RESET button Jump Values of angle encoder 5 in azimuth...

Page 68: ...ins HAN B 6pol PE male AZ EL Motors HAN B 6pol PE female POL Motor HAN A 3pol PE female to M C and ACU IDU Ethernet 4 6 drive limit switches Azimuth Elevation and Polarization Emergency stop and motor...

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