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DMC-1400 Series Command Reference BZ ● 47
BZ
FUNCTION: Brushless Zero
DESCRIPTION:
The BZ command is when the controller is configured for sinusoidal commutation. This
command drives the motor to zero magnetic phase and then sets the commutation phase
to zero.
This command may be given when the motor is off.
ARGUMENTS: BZ x where
x is a real number between -9.998 and 9.998.
The parameter x sets the voltage to be applied to the amplifier during the initialization. In
order to be accurate, the BZ command must be large enough to move the motor. When
the argument is positive, the process ends up in MO state. A negative value causes the
process to end up in the SH state.
Note: The BZ command causes instantaneous movement of the motor. It is recommended to
start with small voltages and increase as needed.
Note: Always use the Off-On-Error function (OE Command) to avoid motor runaway
whenever testing sinusoidal commutation.
USAGE:
While Moving No Default Value 0
In a Program Yes Default Format 0
Command Line Yes
Can be Interrogated No
Used as an Operand No
Controller Usage
DMC-1412/1415/1410/1417
OPERAND USAGE:
_BZ contains the distance in encoder counts from the motor's current position and the position
of commutation zero. This can useful to command a motor to move to the commutation
zero position for phase initialization.
EXAMPLES:
BZ -3
Drive the motor to zero phase position with 3 volts signal, and end up in
SH state.
RELATED COMMANDS:
BA Brushless Axis
BB Brushless Phase Begins
BC Brushless Commutation
BD Brushless Degrees