5 Spindle Axis Operation
5-2
5.1
Speed Control Operation
Depending on the type of machine used, the speed unit for feed axis speed references can be mm/rev or mm/
min.
You can execute the Speed Control Command (VELCTRL: 3C hex) to select the Speed Control Mode.
Note: When the power to a SERVOPACK is turned ON, the SERVOPACK is in Position Control Mode. Execute the
VELCTRL (3C hex) command before you turn ON the servo to change to Speed Control Mode.
Control is performed as shown in the following transition chart.
Speed Control Command (VELCTRL: 3C Hex)
This command changes to speed control in which a target speed reference (VREF) is sent each communica-
tions cycle.
Jogging, other manual operations, automatic operation (memory operation), and other operations related to
spindle axis operation are performed with the VELCTRL (3C hex) command.
Position control with the INTERPOLATE (34 hex) command is recommended for orientation or tapping oper-
ations.
You can specify a speed reference for the VELCTRL (3C hex) command with VREF and use ACCR/DECR to
specify the acceleration and deceleration rates.
SERVO
VELCTRL
CNC
• D_ALM
• COMM_ALM
• HDBB
*CNCVON
M05, M02, M30
ESP = 0
DALM = 1
Power ON
Speed references can now be accepted.
Operation
Servo ON
Operation
Servo ON
SV_OFF
command
SV_ON
command
SV_OFF
command
Servo ON
completed.
Deceleration
to a stop
Quick stop
Servo OFF completed.
Servo OFF completed.
Servo OFF
SV_ON command
Power ON
Servo OFF
䌓䌖䌃䌍䌄
STAT.PON
䌓䌖䌃䌍䌄
STAT.POSRDY
䌓䌖䌃䌍䌄
STAT.M_RDY
CNC.SVON
SV_ON COMMAND
SVCMD_STAT.SV_ON
CMD_STAT.CMD_RDY
RCMD=SV_ON(31H)
START
NOP/DISCONNECT
CONNECT
IRRD
SVPRM_WR
CONFIG
SENS_ON
VELCTRL(VREF=0)
SV_ON
VELCTRL
SV_OFF
DISCONNECT
END
