YASKAWA Sigma-7 SGD7S Series

/HWBB1
/HWBB2
8 ms max.
ON (normal
operation)
OFF (motor current
shut-OFF request)
HWBB state
SERVOPACK
Status
Normal operating status
Fig. 346: HWBB Input Signal Specifications
– The OFF status is not recognized if the OFF interval of the /HWBB1
or /HWBB2 signal is 0.5 ms or shorter.
– You can check the status of the input signals by using monitor dis-
plays. Refer to the following section for details.
Ä Chap. 10.3.3 ‘I/O Signal Monitor’ page 437
12.3.8 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.
Applicable Functions Resetting the HWBB State
n Jogging
n Origin search
n Program jogging
n Automatic adjustment without
host reference
n Easy FFT
n 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)
12.3.9 /S-RDY (Servo Ready Output) Signal
The Servo ON command (Enable Operation command) will not be acknowledged in the
HWBB state. Therefore, 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 when there is
no servo alarm.
Sigma-7 Series SERVOPACKs
Safety Functions
Hard Wire Base Block (HWBB and SBB) > /S-RDY (Servo Ready Output) Signal
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