RAGEBriDGE vI.D Revision 20 Feb 2013
Contents
1. U RAGEBRIDGE V1 0 designs Overview Motor 2 Battery Outputs 5V Aux Input 2 Output Motor 1 Outputs RageBridge is a motor controller that can drive 2 channels of DC motors from 2 R C servo style PWM inputs in forward and reverse with no delay RageBridge features optional channel mixing 3 channel direction reversal invert input stick travel calibration signal loss failsafe synchronous rectification with regenerative braking constant current output mode and an isolated heat sink plate Specifications Voltage Input Range 12 36v nominal 8 50v absolute limits Continuous Current 30A per channel 50 duty cycle 25 C ambient Up to 90A per channel Constant current mode limited 4 5 x 2 x 0 8 Board only 4 5 x 2 55 x 1 0 With heat sink Weight 3 50z without wires Maximum Current Dimensions Inputs 2x R C servo for drive signals 500us to 2500us limits 1100us to 1900us default 1x R C servo for invert control 1x Mixing switch header Logic Power 5V 150mA maximum Heat Management Isolated heat spreader plate Revision 20 Feb 2013 Mounting Dimensions LO WO N 9 N N Dimensions in Inches N OS Ee Installation RageBridge s isolated heat spreader plate has four clearance holes for 4 screws 0 130 diameter The heat spreader plate may be bolted directly to a metal chassis for better thermal performance RageBridge may also be mounted without the heat2. braking If either IN1 or IN2 receive an invalid signal the controller will enter failsafe mode within 1 second The green LED will strobe rapidly and the motors will coast freely If valid signal is received again the controller will enter normal operation within 0 5 seconds EBRIDGE V1 0 Revision 20 Feb 2013 Stick Calibration RageBridge s default pulse width range of 1100us 1900us can be calibrated to better match your radio travels Before beginning we recommend that your radio be set up such that stick up or stick right is an increasing pulse width This direction is associated with forward Disconnect all loads from the controller first to prevent accidental movement A A gt 1500us jor 0 Two stick mode A gt 1500us One stick mode To calibrate the controller use the following procedure 1 Connect both IN1 and IN2 on the controller to your receiver Both channels must be calibrated at once Power on your transmitter Power on the controller Apply full forward stick travels within 2 seconds eS eS Hold full forward stick travels for 5 seconds The green LED will light solid indicating calibration mode is active 6 Apply full reverse stick travels and hold for least 2 seconds 7 Release the stick to neutral 8 Calibration will automatically exit after 2 seconds of neutral signal 9 The green LED will blink rapidly for 1 second to indicate successful calibration At any p
3. sink to minimize dimensions The board itself has 4x 4 40 screws which may be untightened with a 3 32 hex wrench Use the following guidelines for best results 1 Use nonconductive standoffs or spacers to offset the board from the mounting surface 2 Insulate the underside using electrical tape or brush on insulation compound to prevent stray metal or wires from shorting 3 Do not enclose the board in tape shrink tube or sealed cases Doing so will negatively affect the thermal performance and reduce continuous current rating U RAGEBRIDGE v1 0 Signal Connection The IN1 IN2 and IN3 pin headers accept standard 3 pin servo connectors The ground wire must be oriented towards the outside of the board It is generally black or brown Connect IN1 to channel 1 of your radio and IN2 to channel 2 If invert control is needed connect IN3 to a switch channel on your radio Else leave it unconnected The Mixing switch is enabled if the two MIX pins are connected via a jumper not included If it is disconnected the channels are independent Example 2 channel connection with mixing header not included installed Range and Direction By default signal pulse widths greater than 1500us is associated with motor terminals 1 MA1 and MB1 being more positive in voltage Invert status is active if the pulse width on IN3 is greater than 1500us Revision 20 Feb 2013 Power Connection Warning Do not use RageBr
4. idge with only a power supply The regenerative nature of RageBridge will cause the motor s kinetic energy to be directed into the power supply upon stopping and can cause high voltage spikes and damage to both supply and controller A battery must be placed between the supply and controller to absorb this energy if a supply must be used Power connections to RageBridge are made using solder terminal holes on the circuit board Use 12 to 16 gauge wire 14 gauge is recommended The heat sink should be dismounted first for easiest access to the solder terminals Use a 3 32 hex wrench to undo the four 4 40 screws mounting the board to the heat sink Both sets of B and B terminals must be connected to power The board derives logic power from the right side as viewed from above The voltages may be different between sides provided neither exceeds the board s capabilities Twist and tin the wire prior to soldering them in the terminals This prevents frayed wires from shorting neighboring components Flush cut the resulting solder joint to minimize risk of causing shorts designs U RAG gt 9 gt Example wire installation Flush cutting the resulting joint to minimize shorting risk Normal and Failsafe Behavior Under normal circumstances when the controller is receiving good signals the green LED status will strobe every 1 second The motor drivers are active and the default neutral behavior is
5. oint if the procedure is not followed or there is a signal error the calibration mode will simply exit and the controller will enter either Normal or Failsafe mode U RAGEBRIDGE V1 0 ansen designs Output Current Adjustment A unique feature of RageBridge is its ability to output exactly as much current as you limit it to This is a departure from generic smart current limiting in which you have no control over when the controller will cut its output current RageBridge will output up to your maximum current limit and reduce its output voltage just enough to maintain that current limit if the demand is higher This offers protection against stalled motors over torquing actuators acceleration sensitive applications etc To adjust the current limit turn the Max Current trim potentiometer to your desired setting using a nonconductive screwdriver The default setting is approximately 50 amps Use a DC ammeter connected to the motor output wire side to verify exact current The accuracy of the current limit is strongly dependent on motor inductance for typical iron core motors the accuracy is 2 5 amps Warnings Controller will be hot during and after operation Do not place controller in contact with low temperature melting materials Do not handle controller immediately after use Do not reverse battery polarity This controller does NOT have reverse polarity protection Reverse polarity damage is NOT co
6. vered under warranty See the Shipping and Warranty section on eOdesigns com for more information Do not cover the controller or wrap it in insulating materials Doing so will compromise the controller s ability to dissipate heat and will reduce the continuous current rating Do not short the controller or allow conductive materials to contact the board directly The current limit is not guaranteed to protect against dead shorts and board level shorts Do not use RageBridge with only a power supply The regenerative nature of RageBridge will cause the motor s kinetic energy to be directed into the power supply upon stopping and can cause high voltage spikes and damage to both supply and controller A battery must be placed between the supply and controller to absorb this energy if a supply must be used
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