Yaskawa Sigma-5 User Manual: Design and Maintenance - Rotary Motors - Manual (Page 128)

4.6 Safety Function
4-45
Operation
(2) Hard Wire Base Block (HWBB) State
The SERVOPACK will be in the following state if the HWBB function operates. If the /HWBB1 or /HWBB2
signal is OFF, the HWBB function will operate and the SERVOPACK will enter a hard wire base block
(HWBB) state.
/HWBB1
/HWBB2
Reference from
option module
Motor power state
Not applied
(Normal operation) (Requests motor current shutoff.)
(Normal operation) (Requests motor current shutoff.)
Applied Not applied
/HWBB1
/HWBB2
Motor power state
[ Servo OFF command ]
SERVOPACK
state
ON OFF
HWBB state BB state Operation
SERVOPACK
state
ON OFF
HWBB state Operation
The HWBB function operates after the servomotor power is turned OFF.
The HWBB function operates during servomotor operation.
Applied