YASKAWA E-V Series User Manual page 177

5 Operation
5.11.1 Hard Wire Base Block (HWBB) Function
(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-adjustment of motor current detection signal (Fn00E)
(7) Servo Ready Output (/S-RDY)
The servo ON 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 /S-ON signal is turned OFF (set to BB state) when both the
/HWBB1 and /HWBB2 signals are ON.
The following diagram shows an example where the main circuit is turned power ON, the SEN signal is turned
ON (with an absolute encoder), and no servo alarm occurs.
(8) 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 ON.
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.
(9) Dynamic Brake
If the dynamic brake is enabled in Pn001.0 (stopping method after servo 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.
5-74
/HWBB1
ON
/HWBB2
/S-ON
SERVOPACK
Operating
State
/S-RDY ON
OFF ON
ON OFF
HWBB state BB state
OFF ON