Yaskawa Sigma-5 Large Capacity Users Manual: Design and Maintenance-Command Option Interface - Manual (Page 151)

4.7 Safety Function
4-55
4
Ope
rat
ion
(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 baseblock
(HWBB) state.
The HWBB function operates after the servomotor power is turned OFF.
The HWBB function operates while the servomotor power is ON.
/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 ON command is
turned OFF. ]
SERVOPACK
state
ON OFF
HWBB state BB state Operation
SERVOPACK
state
ON OFF
HWBB state Operation
Applied
M-II