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RoboteQ AX3500 user manual Using the Analog Inputs to Monitor External Voltages

Models: AX3500

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Using the Analog Inputs to Monitor External Voltages

Connecting Sensors and Actuators to Input/Outputs

	100
	50
Input Reading	0
Input Reading
Analog	-50
Analog
	-100
	-150
	-20	-10	0	10	20	30	40	50	60	70	80	90	100	110
	-20	-10		10	20	30	40	50	60	70	80	90	100	110

Temperature in Degrees C

FIGURE 35. Signed binary reading by controller vs. NTC temperature

To read the temperature, use the ?p command to have the controller return the A/D con- verter’s value. The value is a signed 8-bit hexadecimal value. Use the chart data to convert the raw reading into a temperature value.

Using the Analog Inputs to Monitor External Voltages

The analog inputs may also be used to monitor the battery level or any other DC voltage. In this mode, the controller does not use the voltage information but merely makes it avail- able to the host microcomputer via the RS232 port. The recommended schematic is shown in Figure 36.

To Battery +Terminal

47kOhm

4.7kOhm

+5V 14

Ana 1: 11

Ana 2: 10

Ana 3: 12

Ana 4: 8

Ground 5

Internal Resistors and Converter

47kOhm

A/D 10kOhm

47kOhm

FIGURE 36. Battery voltage monitoring circuit

Using these resistor values, it is possible to measure a voltage ranging from -5V to +60V with a 0.25V resolution. The formula for converting the A/D reading into a voltage value is as follows.

66

AX3500 Motor Controller User’s Manual

Version 1.9b. June 1, 2007

Image 66

RoboteQ AX3500 Using the Analog Inputs to Monitor External Voltages, Connecting Sensors and Actuators to Input/Outputs

Contents

Dual Channel High Power Digital Motor Controller AX3500User’s Manual AX3500 Motor Controller User’s Manual Version 1.9b. June 1Date Revision HistoryRevision History VersionAX3500 Motor Controller User’s Manual Version 1.9b. June 1Revision History General Operation SECTION SECTIONSECTION SECTION SECTION SECTION Programming using built-in Switches and Display AX3500 Motor Controller User’s Manual Version 1.9b. June 1Do not Connect to a RC Radio with a Battery Attached Important SafetyAvoid Shorts when Mounting Board against Chassis WarningsImportant Safety Warnings AX3500 Motor Controller User’s ManualVersion 1.9b. June 1 Quick Start Locating the Switches and ConnectorsAX3500 What you will needAX3500 Quick Start AX3500 Motor Controller User’s ManualConnecting to the Batteries and Motors Connecting to the Batteries and MotorsAX3500 Motor Controller User’s Manual Signal Connecting to the 15-pin ConnectorImportant Warning RC ModeConnecting the R/C Radio Connecting the R/C RadioPowering On the Controller Important WarningProg and Set button status Button OperationAX3500 Quick Start FunctionDefault Values Default Controller ConfigurationDefault Controller Configuration Prog and Set button statusConnecting the controller to your PC using Roborun AX3500 Quick StartAX3500 Motor Controller User’s Manual Obtaining the Controller’s Software Revision Number Obtaining the Controller’s Software Revision NumberAX3500 Motor Controller User’s Manual AX3500 Quick Start Exploring further= Software version 1.9b AX3500 Motor Controller User’s ManualSECTION 3AX3500 Motor Controller Overview Product DescriptionAX3500 Motor Controller User’s Manual Automatic Joystick Command Corrections Technical featuresMultiple Command Modes AX3500 Motor Controller OverviewHigh Efficiency Motor Power Outputs Technical featuresLow Power Consumption Optical Encoder InputsData Logging Capabilities Advanced Safety FeaturesAX3500 Motor Controller Overview Compact Open Frame PCB DesignPower Connections Connecting Power and Motors to the ControllerPower Connections Important WarningController Power Connecting Power and Motors to the ControllerAX3500 Motor Controller User’s Manual And Main Battery Controller PowerPower Control input is mended Off ConfigurationConnecting Power and Motors to the Controller Controller Powering SchemesPowering the Controller from a single Battery Power Control input isImportant Warning Powering the Controller Using a Main and Backup BatteryController Powering Schemes AX3500 Motor Controller User’s ManualImportant Warning Connecting the MotorsConnecting Power and Motors to the Controller Important WarningSingle Channel Operation Single Channel OperationConverting the AX3500 to Single Channel AX3500 Motor Controller User’s ManualImportant Warning Power FusesConnecting Power and Motors to the Controller AX3500 Motor Controller User’s ManualElectrical Noise Reduction Techniques Wire Length LimitsPower Regeneration Considerations Wire Length LimitsConnecting Power and Motors to the Controller Overvoltage ProtectionUndervoltage Protection Important WarningUsing the Controller with a Power Supply Using the Controller with a Power SupplyAX3500 Motor Controller User’s Manual Connecting Power and Motors to the Controller AX3500 Motor Controller User’s ManualVersion 1.9b. June 1 Basic Operation Input Command ModesGeneral Operation Basic OperationOpen Loop, Mixed Speed Control Selecting the Motor Control ModesOpen Loop, Separate Speed Control General OperationSelecting the Motor Control Modes Closed Loop Speed ControlClose Loop Position Control AX3500 Motor Controller User’s ManualPosition Feedback Position Sensor Gear box User Selected Current Limit SettingsTemperature-Based Current Limitation SettingTemperature Battery Current vs. Motor CurrentBattery Current vs. Motor Current Motor Current = Battery Current / PWM ratioImportant Warning Regeneration Current LimitingMotor Current = Battery Current / PWM Ratio General OperationSetting Using Programmable AccelerationSetting Using SwitchesSetting Using Command Control CurvesSetting Using SwitchesExponentiation Parameter Value Left / Right Tuning AdjustmentLeft / Right Tuning Adjustment Selected CurveGeneral Operation Speed AdjustmentSpeed Adjustment Parameter ValueActivating Brake Release or Separate Motor Excitation Emergency Shut Down Using Controller SwitchesEmergency Stop using External Switch Speed AdjustmentUsing the Inputs to turn Off/On the Power MOSFET transistors Special Use of Accessory Digital InputsUsing the Inputs to Activate the Buffered Output Inverted Operation= Software version 1.9b Self-Test ModeSelf-Test Mode AX3500 Motor Controller User’s ManualEncoder Speed or Position Important WarningGeneral Operation AX3500 Motor Controller User’s ManualAX3500 Connections Connecting Sensors and Actuators to Input/OutputsAX3500 Connections AX3500 Motor Controller User’s ManualAX3500’s Inputs and Outputs Connecting Sensors and Actuators to Input/OutputsAX3500 Motor Controller User’s Manual I/O type SignalAX3500’s Inputs and Outputs ActivatedConnecting Sensors and Actuators to Input/Outputs Pin1I/O List and Pin Assignment Signal dependingSignal depending Connecting devices to Output CConnecting devices to Output C on ModeConnecting Sensors and Actuators to Input/Outputs Connecting Switches or Devices to Input FImportant warning AX3500 Motor Controller User’s ManualConnecting Switches or Devices to EStop/Invert Input Connecting Switches or Devices to EStop/Invert InputAX3500 Motor Controller User’s Manual Connecting Sensors and Actuators to Input/Outputs Connecting Position Potentiometers to Analog InputsAnalog Inputs AX3500 Motor Controller User’s ManualOperating Mode Connecting Tachometer to Analog InputsConnecting Tachometer to Analog Inputs Important WarningImportant Warning Connecting Sensors and Actuators to Input/OutputsOperating Mode Ana 1 p11Temp oC Connecting External Thermistor to Analog InputsConnecting External Thermistor to Analog Inputs Resistance kOhmUsing the Analog Inputs to Monitor External Voltages Connecting Sensors and Actuators to Input/OutputsAX3500 Motor Controller User’s Manual Internal Voltage Monitoring Sensors Connecting User Devices to Analog InputsInternal Heatsink Temperature Sensors Connecting User Devices to Analog InputsAX3500 Motor Controller User’s Manual Temperature Conversion C Source CodeConnecting Sensors and Actuators to Input/Outputs Valueelse Internal Heatsink Temperature SensorsAX3500 Motor Controller User’s Manual LoTemp = i * 5Connecting Sensors and Actuators to Input/Outputs AX3500 Motor Controller User’s ManualVersion 1.9b. June 1 RC Pulse Output Overview RC Pulses OutputRC Pulse Output Overview AX3500 Motor Controller User’s ManualServo Connection to RevA Controllers Connector Location and PinoutConnecting Servos to Controllers RC Pulses OutputConnecting to Slave Controllers Connecting to Slave ControllersServo Connection to RevB Controllers AX3500 Motor Controller User’s ManualPulse Width 1.00ms Pulse Timing InformationCommand Value 1.50msImportant Warning RC Channel Testing Using the PC UtilityRC Channel Testing Using the PC Utility AX3500 Motor Controller User’s ManualRC Pulses Output AX3500 Motor Controller User’s ManualVersion 1.9b. June 1 Optical Incremental Encoders Overview Connecting and Using the Encoder FunctionOptical Incremental Encoders Overview AX3500 Motor Controller User’s ManualRecommended Encoder Types Connecting and Using the Encoder FunctionAX3500 Motor Controller User’s Manual Pulse Frequency in Hz = RPM / 60 * PPR Connecting the EncoderConnecting the Encoder AX3500 Motor Controller User’s ManualConnecting and Using the Encoder Function Cable Length and Noise ConsiderationsMotor - Encoder Polarity Matching Important WarningVoltage Levels, Thresholds and Limit Switches Voltage Levels, Thresholds and Limit SwitchesAX3500 Motor Controller User’s Manual Important Warning Wiring Optional Limit SwitchesConnecting and Using the Encoder Function AX3500 Motor Controller User’s ManualWiring Limit Switches Without Encoders Wiring Limit Switches Without EncodersEffect of Limit Switches Motor 1 FwdConnecting and Using the Encoder Function Using the Encoder Module to Measure DistanceUsing the Encoder to Measure Speed Motor 2 FwdUsing the Encoder to Track Position Using the Encoder to Track PositionImportant Notice AX3500 Motor Controller User’s ManualThe actual formula is as follows Connecting and Using the Encoder FunctionImportant Notice Distance = Destination - Counter value / DividerRS232 Communication with the Encoder Module Encoder Testing and Setting Using the PC UtilityRS232 Communication with the Encoder Module AX3500 Motor Controller User’s ManualConnecting and Using the Encoder Function AX3500 Motor Controller User’s ManualVersion 1.9b. June 1 Selecting the Position Mode Closed Loop Position ModeMode Description Mode DescriptionClosed Loop Position Mode Position Sensor SelectionSensor Mounting Position Feedback Position Sensor Gear boxFeedback Potentiometer wiring Feedback Potentiometer wiringFeedback Potentiometer wiring in RC or RS232 Mode Important NoticeImportant Notice Feedback Potentiometer wiring in Analog ModeClosed Loop Position Mode AX3500 Motor Controller User’s ManualAnalog Feedback on Single Channel Controllers Feedback Wiring in RC or RS232 Mode on Single Channel ControllersFeedback Wiring in Analog Mode on Single Channel Controllers Important NoticeClosed Loop Position Mode Using Optical Encoders in Position ModeSensor and Motor Polarity Important WarningAdding Safety Limit Switches Important Safety WarningEncoder Error Detection and Protection Encoder Error Detection and ProtectionClosed Loop Position Mode FIGURE 62. Safety limit switches interrupting power to motorsAX3500 Motor Controller User’s Manual Using Current Limiting as Protection Using Current Limiting as ProtectionControl Loop Description Important WarningPID tuning in Position Mode Closed Loop Position ModeAX3500 Motor Controller User’s Manual PID tuning in Position Mode Applied Power = Command Value - Actual Position * Proportional GainAX3500 Motor Controller User’s Manual Closed Loop Position Mode AX3500 Motor Controller User’s ManualVersion 1.9b. June 1 Mode Description Closed Loop Speed ModeSelecting the Speed Mode Mode DescriptionTachometer or Encoder Mounting Using Optical Encoder for Speed FeedbackDigital Optical EncodTachometer wiring Closed Loop Speed ModeSpeed Sensor and Motor Polarity Speed Sensor and Motor PolarityImportant Warning AX3500 Motor Controller User’s ManualImportant Warning Adjust Offset and Max SpeedClosed Loop Speed Mode Control Loop DescriptionPID tuning in Speed Mode PID tuning in Speed ModeAX3500 Motor Controller User’s Manual Closed Loop Speed Mode In Speed Mode, the Integral component of the PID is the most important and must be set first. The Proportional and Differential component will help improve the response time and loop stabilityAX3500 Motor Controller User’s Manual Use of the LED Display Normal and Fault Condition LED MessagesUse of the LED Display AX3500 Motor Controller User’s ManualPossible Display Motor Direction StatusNormal and Fault Condition LED Messages MotorFault Messages Fault MessagesNo Control Possible DisplaySelf-Test Display Temporary FaultsPermanent Faults Normal and Fault Condition LED Messages= Software version 1.9b Self-Test DisplayAX3500 Motor Controller User’s Manual Normal and Fault Condition LED Messages AX3500 Motor Controller User’s ManualVersion 1.9b. June 1 Mode Description SECTION 12 R/C OperationMode Description AX3500 Motor Controller User’s ManualSignal Selecting the R/C Input ModeConnector I/O Pin Assignment R/C Mode Pin1Signal R/C Input Circuit DescriptionSupplied Cable Description R/C Input Circuit DescriptionR/C Operation Powering the Radio from the controllerFIGURE 74. RC Cable wiring diagram FIGURE 75. RC connection cable6 Radio battery - Ground 7 Radio battery + 8 Channel 3 Command Pulses Powering the Radio from the controller3 Channel 1 Command Pulses 4 Channel 2 Command Pulses Wire loop bringing power from controller to RC radioR/C Operation Connecting to a Separately Powered RadioOperating the Controller in R/C mode AX3500 Motor Controller User’s ManualReception Watchdog Reception WatchdogAX3500 Motor Controller User’s Manual R/C Operation Important Notice about PCM RadiosR/C Transmitter/Receiver Quality Considerations AX3500 Motor Controller User’s ManualDeadband Parameter Value Joystick Deadband ProgrammingJoystick Deadband Programming Deadband as Percent of full Joystick TravelCommand Control Curves Left/Right Tuning AdjustmentJoystick Calibration R/C OperationAutomatic Joystick Calibration Automatic Joystick CalibrationAX3500 Motor Controller User’s Manual R/C Operation Data Logging in R/C ModeImportant Notice On before entering joystick calibrationDB15 Male Data Logging in R/C ModeAX3500 Motor Controller User’s Manual To ControllerR/C Operation AX3500 Motor Controller User’s ManualVersion 1.9b. June 1 Mode Description Analog Control and OperationMode Description Important NoticePin1 Connector I/O Pin Assignment Analog ModeSignal Analog Control and OperationConnecting to a Voltage Source Connecting to a Voltage SourceConnecting a Potentiometer AX3500 Motor Controller User’s ManualSelecting the Potentiometer Value Important NoticeAnalog Deadband Adjustment Data Logging in Analog Mode Power-On SafetyUnder Voltage Safety Motor Power at 0%Data Logging in Analog Mode AX3500 Motor Controller User’s ManualAnalog Control and Operation AX3500 Motor Controller User’s ManualVersion 1.9b. June 1 Use and benefits of RS232 Serial RS-232 Controls and OperationUse and benefits of RS232 AX3500 Motor Controller User’s ManualPin1 Connector I/O Pin Assignment RS232 ModeSignal Serial RS-232 Controls and OperationCable configuration Cable configurationExtending the RS232 Cable AX3500 Motor Controller User’s ManualEstablishing Manual Communication with a PC Communication Settings9600 bits/s, 7-bit data, 1 Start bit, 1 Stop bit, Even Parity Serial RS-232 Controls and OperationRoboteq v1.9b 06/01/07 s RS232 Communication with the Encoder ModuleEstablishing Manual Communication with a PC AX3500 Motor Controller User’s ManualSerial RS-232 Controls and Operation Entering RS232 from R/C or Analog modeData Logging String in R/C or Analog mode AX3500 Motor Controller User’s ManualCommand Acknowledgement Commands Acknowledge and Error MessagesRS232 Mode if default Command ErrorCommand Controller Commands and QueriesRS-232 Watchdog Serial RS-232 Controls and OperationQuery Power Applied to Motors Set Motor Command ValueSet Accessory Output Controller Commands and QueriesImportant Notice Query Amps from Battery to each Motor ChannelImportant Notice Serial RS-232 Controls and OperationController Commands and Queries Query Heatsink TemperaturesQuery Analog Inputs ?r or ?RQuery Digital Inputs Query Battery VoltagesReset Controller Serial RS-232 Controls and OperationAccessing & Changing Configuration Parameter in Flash Accessing & Changing Configuration Parameter in FlashApply Parameter Changes Read parameterLocation Flash Configuration Parameters ListSerial RS-232 Controls and Operation DescriptionAccessing & Changing Configuration Parameter in Flash Input Control ModeMotor Control Mode AccessAccess Amps LimitAcceleration After Reset or FFAccess Input Switches FunctionAccessing & Changing Configuration Parameter in Flash After Reset or FFExponentiation on Channel 1 and Channel Left/Right AdjustRC Joystick or Analog Deadband AccessAccessing & Changing Configuration Parameter in Flash Default Encoder Time Base 1 andDefault Encoder Distance Divider AccessAccess Default PID GainsJoystick Min, Max and Center Values After Reset or FFDefinition Reading & Changing Operating Parameters at RuntimeReading & Changing Operating Parameters at Runtime See pagesAccess Operating Modes RegistersRead/Change PID Values Access Read/Write Effective InstantlyAddress Access Read/Write Effective Instantly PWM Frequency RegisterController Status Register AccessAccess Controller Identification RegisterCurrent Amps Limit Registers AccessRead Encoder Counter RS232 Encoder Command SetSet/Reset Encoder Counters and Destination Registers RS232 Encoder Command SetSyntax Read Speedq or !Q n AX3500 Motor Controller User’s ManualRead Speed/Distance Read Encoder Limit Switch StatusRead Distance RS232 Encoder Command SetSwitch Important NoteRead / Modify Encoder Module Registers and Parameters SwitchModify parameter RS232 Encoder Command SetAccess AddressEncoder Hardware ID code Switch StatusRegister Description AccessCounter 1 and Speed or Distance 1 orCounter Read/Write Mailbox Destination Register 1 andTime Base 1 and Distance 1 andSpeed 1 and Encoder ThresholdDefault Value Counter Read Data FormatRC Pulse Outputs Activation Access32-bit Hex Encoder Testing and Setting Using the PC UtilityDecimal Controller OutputAutomatic Switching from RS232 to RC Mode Automatic Switching from RS232 to RC ModeAX3500 Motor Controller User’s Manual Data Logging Cables 00 11 22 33 44 55 66 77 88 99 AA BB CCAnalog and R/C Modes Data Logging String Format AX3500 Motor Controller User’s ManualDecimal to Hexadecimal Conversion Table Decimal to Hexadecimal Conversion TableAX3500 Motor Controller User’s Manual AX3500 Motor Controller User’s Manual Decimal to Hexadecimal Conversion Table AX3500 Motor Controller User’s ManualAX3500 Motor Controller User’s Manual Version 1.9b. June 1Programming Methods SECTION 15 Configuring the Controller using the SwitchesProgramming using built-in Switches and Display AX3500 Motor Controller User’s ManualProgram Entering Programming ModeConfiguring the Controller using the Switches AX3500 Motor Controller User’s ManualProgramming using built-in Switches and Display Changing parametersThe Special Case of Joystick Calibration Important WarningProgrammable Parameters List Restoring factory defaultsExiting the Parameter Setting Mode Configuring the Controller using the Switchescannot be selected using the switches Possible Values defaultFor safety reasons, the modes below Programmable Parameters ListOrder Configuring the Controller using the SwitchesPossible Values default LetterSystem Requirements SECTION 16 Using the Roborun Configuration UtilityDownloading and Installing the Utility AX3500 Motor Controller User’s ManualConnecting the Controller to the PC Using the Roborun Configuration UtilityAX3500 Motor Controller User’s Manual 1- Program Revision Number Roborun Frame, Tab and Menu DescriptionsRoborun Frame, Tab and Menu Descriptions 2- Controller and Communication Link Information3- Parameter Selection and Setting and Special Functions Getting On-Screen HelpUsing the Roborun Configuration Utility 4- File and Program Management Commands2- Motor Control Mode Control SettingsLoading, Changing Controller Parameters Loading, Changing Controller Parameters3- Input Command Adjustment Power SettingsUsing the Roborun Configuration Utility 4- Emergency Stop or Invert Switch Select3- Acceleration Setting Analog or R/C Specific SettingsLoading, Changing Controller Parameters 2- Left/Right Adjust 1- DeadbandUsing the Roborun Configuration Utility Encoder Setting and TestingClosed Loop Parameters AX3500 Motor Controller User’s ManualEncoder Module Parameters Setting Encoder Setting and TestingAX3500 Motor Controller User’s Manual Viewing Encoder Data RC Output TestingExercising the Motors Using the Roborun Configuration UtilityRunning the Motors Running the MotorsAX3500 Motor Controller User’s Manual 1- Run/Stop Button Using the Roborun Configuration Utility2- Motor Power setting 3- MeasurementRunning the Motors 4- Real-Time Strip Chart Recorder6- Input Status and Output Setting 5- Transmit and Receive Data7- Data Logging and Timer Logging Data to DiskUsing the Roborun Configuration Utility 8- Joystick EnableParameter Header Connecting a JoystickRunning the Motors Data type/range2- Command Entry Using the ConsoleUsing the Roborun Configuration Utility 1- Terminal Screen4- Send Reset String Viewing and Logging Data in Analog and R/C ModesLoading and Saving Profiles to Disk Viewing and Logging Data in Analog and R/C ModesOperating the AX3500 over a Wired or Wireless LAN Using the Roborun Configuration UtilityAX3500 Motor Controller User’s Manual Updating the Controller’s Software Updating the Controller’s SoftwareImportant Warning AX3500 Motor Controller User’s ManualUsing the Roborun Configuration Utility Creating Customized Object FilesUpdating the Encoder Software Important WarningCreating Customized Object Files AX3500 Motor Controller User’s ManualUsing the Roborun Configuration Utility AX3500 Motor Controller User’s ManualVersion 1.9b. June 1 Mechanical Dimensions Mechanical SpecificationsMechanical Dimensions AX3500 Motor Controller User’s ManualMechanical Specifications Mounting ConsiderationsThermal Considerations AX3500 Motor Controller User’s ManualAttaching the Controller Directly to a Chassis Attaching the Controller Directly to a ChassisAX3500 Motor Controller User’s Manual Precautions to observe Mechanical SpecificationsAX3500 Motor Controller User’s Manual Wire Dimensions Wire DimensionsWeight AX3500 Motor Controller User’s ManualMechanical Specifications AX3500 Motor Controller User’s ManualVersion 1.9b. June 1