RoboteQ AX500 manual Activating Brake Release or Separate Motor Excitation, Inverted Operation

Activating Brake Release or Separate Motor Excitation

TABLE 6. Left/Right Adjustment Parameter selection

Parameter Value	Speed Adjustment	Parameter Value	Speed Adjustment
5	-1.5%	12	4.5%
6	-0.75%	14	5.25%

Activating Brake Release or Separate Motor Excitation

The controller may be configured so that the Output C will turn On whenever one of the two motors is running. This feature is typically used to activate the mechanical brake release sometimes found on motors for personal mobility systems. Likewise, this output can be used to turn on or off the winding that creates the armature’s magnetic field in a separate excitation motor. This function is disabled by default and may be configured using the Roborun PC utility. See “Loading, Changing Controller Parameters” on page 134. See “Connecting devices to Output C” on page 51 for details on how to connect to the output.

Emergency Stop using External Switch

An external switch can be added to the AX500 to allow the operator to stop the controller’s output in case of emergency. This controller input can be configured as the “Inverted” detection instead of Emergency Stop. The factory default for this input is “No Action”.

The switch connection is described in “Connecting Switches or Devices to EStop/Invert Input” on page 53. The switch must be such that it is in the open state in the normal situa- tion and closed to signal an emergency stop command.

After and Emergency Stop condition, the controller must be reset or powered Off and On to resume normal operation.

Inverted Operation

For robots that can run upside-down, the controller can be configured to reverse the motor commands using a gravity activated switch when the robot is flipped. This feature is enabled only in the mixed mode and when the switch is enabled with the proper configura- tion of the “Input switch function” parameter. See “Programmable Parameters List” on page 175.

The switch connection is described in “Connecting Switches or Devices to EStop/Invert Input” on page 53. The switch must be such that it is in the open state when the robot is in the normal position and closed when inverted. When the status of the switch has changed, the controller will wait until the new status has remained stable for 0.5s before acknowl- edging it and inverting the commands. This delay is to prevent switch activation triggered by hits and bounces which may cause the controller to erroneously invert the commands.

AX500 Motor Controller User’s Manual 45