Hard Wire Base Block (Hwbb) Function - YASKAWA Sigma-V Series User Manual

5.2

Hard Wire Base Block (HWBB) Function

The Hard Wire Base Block function (hereinafter referred to as HWBB function) is a
safety function designed to baseblock the motor (shut off the motor current) by using
the hardwired circuits: Each circuit for two channel input signals blocks the run sig-
nal to turn OFF the power module, and the motor current is shut off. (Refer to the dia-
gram below.)
24-V
power supply
Switch
/HWBB1+ 4
Fuse
/HWBB1-
/HWBB2+
/HWBB2-
/HWBB1+ 4
/HWBB1-
/HWBB2+
/HWBB2-
0 V
SERVOPACK 1
CN8
3
6
5
SERVOPACK 2
CN8
3
6
5

5.2 Hard Wire Base Block (HWBB) Function

Power supply
Converter 1
Control circuit
Block
Block
Power module
Power supply
Converter 2
Control circuit
Block
Block
Power module
Motor
5-3