YASKAWA SGD7S-****20A Series - Operation Without a Host Controller; S-RDY (Servo Ready Output) Signal

11.2 Hard Wire Base Block (HWBB)
11.2.7 Operation without a Host Controller
11-8
11.2.7 Operation without a Host Controller
The HWBB will operate even for operation without a host controller.
However, if the HWBB operates during execution of the following functions, leave the execution
mode for the function and then enter it again to restart operation. Operation will not be
restarted simply by turning OFF the /HWBB1 and /HWBB2 signals.
11.2.8 /S-RDY (Servo Ready Output) Signal
The SV_ON (Servo ON: 31h) command will not be acknowledged in the HWBB state. There-
fore, the Servo Ready Output Signal will turn OFF.
The Servo Ready Output Signal will turn ON if both the /HWBB1 and /HWBB2 signals are ON
and the servo is turned OFF (BB state).
An example is provided below for when the main circuit power supply is ON and the SENS_ON
(Turn Sensor ON) command is input when there is no servo alarm. (An absolute encoder is
used in this example.)
Applicable Functions Resetting the HWBB State
• Jogging
• Origin search
• Program jogging
• Automatic adjustment without
host reference
• Easy FFT
• Adjustment of motor current
detection signal offset
/HWBB1
/HWBB2
Function
execution mode
Function
execution
status
Function
execution mode
ON (normal
operation)
SERVOPACK
Status
Operating
Status
HWBB state
BB state
Operating
Status
OFF (motor
current
shut-OFF
request)
Not function
execution mode
After you turn ON the /HWBB1 and
/HWBB2 signals, leave the execution mode
for the function and then enter it again.
ON (normal
operation)
/HWBB1
/HWBB2
ON
OFF
OFF
ON (normal
operation)
Servo ON
SERVOPACK
Status
/S-RDY (Servo
Ready Output
Signal)
Operating
Status
ON
HWBB state
BB state
ON
OFF (motor current
shut-OFF request)
ON (normal
operation)