Yaskawa Sigma-5 User Manual: Design and Maintenance - Rotary Motors - Manual (Page 131)

4 Operation
4.6.1 Hard Wire Base Block (HWBB) Function
4-48
(6) Operation with Utility Functions
The HWBB function works while the SERVOPACK operates in utility function mode.
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 mode 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)
(7) Brake Signal (/BK)
When the /HWBB1 or /HWBB2 signal is OFF and the HWBB function operates, the brake signal (/BK) will
turn OFF. At that time, Pn506 (Brake Reference - Servo OFF Delay Time) will be disabled. Therefore, the ser-
vomotor may be moved by external force until the actual brake becomes effective after the brake signal (/BK)
turns OFF.
Note: The brake signal output is not related to safety functions. Be sure to design the system so that the system will not be
put into danger if the brake signal fails in the HWBB state. Moreover, if a servomotor with a brake is used, keep in
mind that the brake for the servomotor is used only to stop the motor from moving and it cannot be used to brake the
motor.
(8) Dynamic Brake
If the dynamic brake is enabled in Pn001.0 (stopping method after servomotor power OFF), the servomotor
will come to a stop under the control of the dynamic brake when the HWBB function works while the /
HWBB1 or /HWBB2 signal is OFF.
Note: The dynamic brake is not related to safety function. Be sure to design the system so that the system will not be put
into danger if the servomotor coasts to a stop in the HWBB state. Usually, use a sequence in which the HWBB state
occurs after the servomotor is stopped using a command.
CAUTION
If the application frequently uses the HWBB function, do not use the dynamic brake to stop the motor, or otherwise
element deterioration in the SERVOPACK may result. Use a sequence in which the HWBB state occurs after the ser-
vomotor has come to a stop.