4 Operation
4.8.1 Hard Wire Base Block (HWBB) Function
4-60
If the HWBB function is requested by turning OFF the /HWBB1 and /HWBB2 input signals on the two chan-
nels, the power supply to the servomotor will be turned OFF within 20 ms (see below).
Note 1. The OFF status is not recognized if the total OFF time of the /HWBB1 and /HWBB2 signals is 0.5 ms or shorter.
2. The status of the input signals can be checked using monitor displays. Refer to
7.5 Monitoring Safety Input Sig-
nals
.
(7) Operation with Utility Functions
The HWBB function works while the SERVOPACK operates in the utility function.
If any of the following utility functions is being used with the /HWBB1 and /HWBB2 signals turned OFF, the
SERVOPACK cannot be operated by turning ON the /HWBB1 and /HWBB2 signals. Cancel the utility func-
tion first, and then set the SERVOPACK to the utility function again and restart operation.
• JOG operation (Fn002)
• Origin search (Fn003)
• Program JOG operation (Fn004)
• Advanced autotuning (Fn201)
• EasyFFT (Fn206)
• Automatic offset-signal adjustment of motor current detection signal (Fn00E)
(8) Servo Ready Output (/S-RDY)
The servo ON (SV_ON: 31H) command will not be accepted in the HWBB state. Therefore, the servo ready
output will turn OFF. The servo ready output will turn ON if the servomotor power is OFF (set to BB state)
when both the /HWBB1 and /HWBB2 signals are ON.
The following diagram shows an example where the main circuit power supply is turned ON, the Turn
Encoder Power Supply ON (SENS_ON) command is sent (with an absolute encoder), and no servo alarm
occurs.
When using the HWBB function, always use a 24-VDC power supply for the DC power.
/HWBB1
/HWBB2
Normal operation
SERVOPACK
State
HWBB state
ON
(Normal operation)
OFF (Motor current
shut-off request)
Within 20 ms
/HWBB1
/HWBB2
Servomotor
Power
/S-RDY
ON
(Normal
operation)
ON
(Normal operation)
OFF
ON
OFF
(Motor current
shut-off request)
ON
OFF
ON
HWBB state
BB state
Operating
SERVOPACK
State
MECHA