AX2550/2850
Dual Channel High Power Digital Motor Controller
Date Version Changes
Revision History
Revision History
AX2550/2850 Motor Controller User’s Manual
Section
Section
Self-Test Display
104
124
152
What you will need
AX2500/2850 Quick Start
AX2500/2850 Quick Start
Locating Switches, Wires and Connectors
Connecting to the Batteries and Motors
Connecting to the Batteries and Motors
Power Control input connected to Action
Using the Power Control Wire
Connecting the R/C Radio
Powering On the Controller
Powering On the Controller
Prog and Set button status Function
Button Operation
Parameter Default Values Letter
Default Controller Configuration
Checking and Changing Configurations
Default Controller Configuration
Connecting the controller to your PC using Roborun
Obtaining the Controller’s Software Revision Number
Obtaining the Controller’s Software Revision Number
Exploring further
Product Description
AX2500/2850 Motor Controller Overview
Technical features
Optical Encoder Inputs AX2850 only
Technical features
Low Power Consumption
High Efficiency Motor Power Outputs
Sturdy and Compact Mechanical Design
Advanced Safety Features
Data Logging Capabilities
Connecting Power
Connecting Power and Motors to the Controller
Connecting Power
Connecting Power and Motors to the Controller
Controller Power
Two
Controller Power
Powering the Controller using the Motor Batteries
Powering the controller from the Motor Batteries
Using a Backup Battery
Wire Length Limits
Power Fuses
Electrical Noise Reduction Techniques
Power Regeneration Considerations
Electrical Noise Reduction Techniques
Undervoltage Protection
Using the Controller with a Power Supply
Overvoltage Protection
Using the Controller with a Power Supply
Connecting Power and Motors to the Controller
Basic Operation
Input Command Modes
General Operation
Basic Operation
General Operation
Selecting the Motor Control Modes
Open Loop, Separate Speed Control
Open Loop, Mixed Speed Control
Selecting the Motor Control Modes
Closed Loop Speed Control
Close Loop Position Control
Continuous and Extended Current Limitation
Current Limit Settings
Setting Continuous High Amps
Setting Continuous High Amps Extended Safe Amps
Temperature-Based Current Limitation
Temperature-Based Current Limitation
Programmable Acceleration
Surge Current Protection
Regeneration Current Limiting
Programmable Acceleration
Exponentiation curves
Command Control Curves
Exponentiation Parameter Value Selected Curve
Left / Right Tuning Adjustment
Left / Right Tuning Adjustment
Parameter Value Speed Adjustment
Emergency Shut Down Using Controller Switches
Inverted Operation
Emergency Stop using External Switch
Emergency Stop using External Switch
Using the Inputs to Activate the Buffered Output
Special Use of Accessory Digital Inputs
Self-Test Mode
Self-Test Mode
General Operation
AX2500/2850 Connections
Connecting Sensors and Actuators to Input/Outputs
AX2500/2850 Connections
Connecting Sensors and Actuators to Input/Outputs
AX2500/2850’s Inputs and Outputs
Signal Type Use Activated
AX2500/2850’s Inputs and Outputs
List and Pin Assignment
Pin Wire Input or Number Color Output Signal Description
Connecting devices to Output C
Connecting devices to Output C
Connecting external Mosfet and load to Output D
Connecting devices to Output D
Connecting Switches or Devices to Input F
Connecting Switches or Devices to Input E
Show how to wire the switch to this input
Connecting Switches or Devices to EStop/Invert Input
Connecting Position Potentiometers to Analog Inputs
Connecting Position Potentiometers to Analog Inputs
Potentiometer wiring in Position mode
Connecting Tachometer to Analog Inputs
Resistance kOhm
Connecting External Thermistor to Analog Inputs
Connecting External Thermistor to Analog Inputs
Temp oC
NTC
Using the Analog Inputs to Monitor External Voltages
Measured volts = controller reading + 128 * 0.255
Connecting User Devices to Analog Inputs
Connecting User Devices to Analog Inputs
Internal Voltage Monitoring Sensors
Internal Heatsink Temperature Sensors
Temperature Conversion C Source Code
Temperature Conversion C Source Code
Connecting Sensors and Actuators to Input/Outputs
Use of the LED Display
Normal Fault Condition LED Messages
Use of the LED Display
Possible Display Motor Comment
Normal and Fault Condition LED Messages
Motor Direction Status
No Control
Fault Messages
Fault Messages
Emergency Stop
Self-Test Display
Operation
Mode Description
Mode Description
Operation
Selecting the R/C Input Mode
Typical Wiring
Pin Input or Number Signal Output Description
Connector I/O Pin Assignment R/C Mode
Connector I/O Pin Assignment R/C Mode
Input Circuit Description
Supplied Cable Description
Supplied Cable Description
Cabling to R/C Receiver using Full Opto-Isolation
Cabling to R/C Receiver with Partial Opto-Isolation
Cabling to R/C Receiver with Partial Opto-Isolation
Partial opto-isolation with Channel 3 electrical diagram
Powering the Radio from the controller
Wiring for powering R/C radio from controller
Powering the Radio from the controller
Joystick position vs. pulse duration default values
Operating the Controller in R/C mode
Reception Watchdog
Reception Watchdog
Transmitter/Receiver Quality Considerations
Joystick Deadband Programming
Joystick Calibration
Left/Right Tuning Adjustment
Command Control Curves
Automatic Joystick Calibration
Activating the Accessory Outputs
Activating the Accessory Outputs
Using Channel 3 to activate accessory outputs
Data Logging in R/C Mode
Data Logging in R/C Mode
Operation
Use and benefits of RS232
Serial RS-232 Controls Operation
Use and benefits of RS232
Serial RS-232 Controls and Operation
Connector I/O Pin Assignment RS232 Mode
Must be wired to pin 13 or pin
Must be wired to pin
Extending the RS232 Cable
Cable configuration
Cable configuration
Establishing Manual Communication with a PC
Communication Settings
Bits/s, 7-bit data, 1 Start bit, 1 Stop bit, Even Parity
Roboteq v1.7 02/01/05 s
Entering RS232 from R/C or Analog mode
Data Logging String in R/C or Analog mode
Establishing Manual Communication with a PC
Set Motor Command Value
RS232 Commands Set
RS232 Mode if default
A3F
Set Accessory Outputs
Query Power Applied to Motors
RS232 Commands Set B7F
Query Analog Inputs
Query Amps Consumed by Motors
Query Digital Inputs
Query Heatsink Temperatures
Query Battery Voltages
RS232 Commands Set
Modify parameter
Read and Modify Controller Settings
Read parameter
Apply Parameter Changes
Optical Encoder Commands
Commands Acknowledge and Error Messages
Reset Controller
Watchdog time-out
Command Acknowledgement
Command Error
RS-232 Watchdog
RS232 Accessible Parameter Table
RS232 Accessible Parameter Table
PID
Automatic Switching from RS232 to RC Mode
Automatic Switching from RS232 to RC Mode
Analog and R/C Modes Data Logging String Format
Data Logging Cables
Data Logging Cables
Dec Hex
Decimal to Hexadecimal Conversion Table
Decimal to Hexadecimal Conversion Table
106
Analog Control and Operation
Unused
Connector I/O Pin Assignment Analog Mode
Analog Control and Operation
Connecting to a Voltage Source
Connecting to a Voltage Source
Connecting a Potentiometer
= U/R = 5V / 1000 Ohms = 0.005A = 5mA
Selecting the Potentiometer Value
Analog Deadband Adjustment
Analog Deadband Adjustment
Data Logging in Analog Mode
Power-On Safety
Under Voltage Safety
Modified Analog cable with RS232 output data logging for PC
Data Logging in Analog Mode
114
Selecting the Position Mode
Closed Loop Position Mode
Sensor Mounting
Closed Loop Position Mode
Position Sensor Selection
Sensor and Motor Polarity
Potentiometer wiring
Using Optical Encoders in Position Mode
Potentiometer wiring
Important Safety Warning
Safety limit switches interrupting power to motors
Adding Safety Limit Switches
Control Loop Description
Using Current Limiting as Protection
Control Loop Description
PID tuning in Position Mode
Selecting the Speed Mode
Closed Loop Speed Mode
Tachometer or Encoder Mounting
Using Optical Encoder for Speed Feedback AX2850 only
Tachometer wiring
Closed Loop Speed Mode
Speed Sensor and Motor Polarity
Speed Sensor and Motor Polarity
Adjust Offset and Max Speed
AX2500/2850 Motor Controller User’s Manual 127
PID algorithm used in Speed mode
PID tuning in Speed Mode
PID tuning in Speed Mode
130
Optical Incremental Encoders Overview
Installing Connecting Using Encoder Module
Optical Incremental Encoders Overview
Recommended Encoder Types
Installing, Connecting and Using the Encoder Mod
Pulse Frequency in Hz = RPM / 60 * PPR
Installing the Encoder Module
Installing the Encoder Module
Position of Encoder Module on Controller’s main board
Pin Name Cable Color
Connecting the Encoder
Connecting the Encoder
Motor Encoder Polarity Matching
Voltage Levels, Thresholds and Limit Switches
Wiring Optional Limit Switches
Wiring Optional Limit Switches
Using the Encoder Module to Measure Distance
Using the Encoder to Measure Speed
Using the Encoder to Measure Speed
Distance = Destination Counter value / Divider
Using the Encoder to Track Position
RS232 Communication with the Encoder Module
?Q0
RS232 Encoder Command Set
Read Encoder Counter
?q or Q n
Or !Q n
Set/Reset Encoder Counters and Destination Registers
RS232 Encoder Command Set
Read Speed
Read Speed/Distance
Read Encoder Limit Switch Status
Read Distance
?w or ?W
Switch Value
Read / Modify Encoder Module Registers and Parameters
Controller replies, value is
Address Parameter Description Size Access
Encoder Hardware ID code
Register Description
Counter 1
Switch Status
Speed or Distance 1 or
Counter Read/Write Mailbox
Encoder Threshold
Counter Read Data Format
Speed 1
Time Base 1
FFFFFF15
Encoder Testing and Setting Using the PC Utility
Encoder Testing and Setting Using the PC Utility
Encoder Module Parameters Setting
Viewing Encoder Data
Updating the Encoder Software
Exercising the Motors
Programming Methods
Configuring Controller using Switches
Programming using built-in Switches and Display
Configuring the Controller using the Switches
Entering Programming Mode
Special Case of Joystick Calibration
Restoring factory defaults
Changing parameters
Programmable Parameters List
Exiting the Parameter Setting Mode
Programmable Parameters List
Order Letter Description Possible Values default Pages
158
System Requirements
Using the Roborun Configuration Utility
Downloading and Installing the Utility
Using the Roborun Configuration Utility
Connecting the Controller to the PC
Roborun Frame, Tab and Menu Descriptions
Roborun Frame, Tab and Menu Descriptions
Loading, Changing Controller Parameters
Parameter Selection and Setting, and Special Functions
File and Program Management Commands
Getting On-Screen Help
Controls Settings
Effect of Digital Inputs
Power Settings
Left/Right Adjust
Acceleration Setting
Joystick Timing
Analog or R/C Specific Settings
Deadband
Closed Loop Parameters
Viewing the Parameters Summary
Optical Encoder Operation
Optical Encoder Operation
Running the Motors
Measurement
Motor Power setting
Run/Stop Button
Transmit and Receive Data
Real-Time Strip Chart Recorder
Input Status and Output Setting
Running the Motors
Logging Data to Disk
Parameter Header Data type/range Measured Parameter
Connecting a Joystick
Loading and Saving Profiles to Disk
Operating the AX2500/2850 over a Wired or Wireless LAN
Viewing and Logging Data in Analog and R/C Modes
Roboserver screenshot when idle
Operating the AX2500/2850 over a Wired or Wireless LAN
Creating Customized Object Files
Updating the Controller’s Software
Creating Customized Object Files
Objectmaker creates controller firmware with custom defaults
176
Mechanical Dimensions
Mechanical Specifications
Mechanical Dimensions
Thermal Considerations
Mechanical Specifications
Mounting Considerations
Wire Gauge Outside Diameter Color Length
Wire Dimensions
Weight
Wire Dimensions
180