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AX2500/2850 Motor Controller User’s Manual 23
Technical features
•Tachometer inputs for closed loop speed control
•Potentiometer input for position (servo mode)
•Motor temperature sensor inputs
•External voltage sensors
•User defined purpose (RS232 mode only)
• One Switch input configurable as
•Emergency stop command
•Reversing commands when running vehicle inverted
•General purpose digital input
• Up to 2 general purpose outputs for accessories or weapon
•One 24V, 2A output
•One low-level digital output
• Up to 2 general purpose digital inputs
Optical Encoder Inputs (AX2850 only)
• Inputs for two Quadrature Optical Encoders
• up to 250khz Encoder frequency per channel
• two 32-bit up-down counters
• Inputs may be shared with four optional limit switches per channel
Internal Sensors
• Voltage sensor for monitoring the main 12 to 40V battery system operation
• Voltage monitoring of internal 12V
• Temperature sensors on the heat sink of each power output stage
• Sensor information readable via RS232 port
Low Power Consumption
• On board DC/DC converter for single 12 to 40V battery system operation
• Optional backup power input for powering safely the controller if the motor batteries
are discharged
• Max 200mA at 12V or 100mA at 24V idle current consumption
• Power Control wire for turning On or Off the controller from external microcomputer
or switch
• No power consumed by output stage when motors are stopped
• Regulated 5V output for powering R/C radio. Eliminates the need for separate R/C
battery
High Efficiency Motor Power Outputs
• Two independent power output stages
• Dual H bridge for full forward/reverse operation
• Ultra-efficient 2.5mOhm ON resistance (RDSon) MOSFET transistors
• 12 to 40 V operation
• High current 8 AWG cable sets for each power stages
• SmartAmps Automatic current limitation
•120A up to 15 seconds (per channel)