YASKAWA E-7S SERVOPACK SGD7S - Hard Wire Base Block (HWBB) State; Resetting the HWBB State

11.2 Hard Wire Base Block (HWBB)
11.2.2 Hard Wire Base Block (HWBB) State
11-4
• Direct Drive Servomotor: 1/20 rotation max. (rotational angle calculated at the motor shaft)
• Linear Servomotor: 50 mm max.
• The HWBB does not shut OFF the power to the SERVOPACK or electrically isolate it. Imple-
ment measures to shut OFF the power supply to the SERVOPACK before you perform main-
tenance on it.
11.2.2 Hard Wire Base Block (HWBB) State
The SERVOPACK will be in the following state if the HWBB operates. If the /HWBB1 or
/HWBB2 signal turns OFF, the HWBB will operate and the SERVOPACK will enter a HWBB
state.
11.2.3 Resetting the HWBB State
Normally, after the /S-ON (Servo ON) signal is turned OFF and power is no longer supplied to
the Servomotor, the /HWBB1 and /HWBB2 signals will turn OFF and the SERVOPACK will
enter the HWBB state. If you turn ON the /HWBB1 and /HWBB2 signals in this state, the SER-
VOPACK will enter a base block (BB) state and will be ready to acknowledge the /S-ON signal.
If the /HWBB1 and /HWBB2 signals are OFF and the /S-ON (Servo ON Input) signal is input,
the HWBB state will be maintained even after the /HWBB1 and /HWBB2 signals are turned
ON. Turn OFF the /S-ON signal to place the SERVOPACK in the BB state and then turn ON the
/S-ON signal again.
Note: 1. If the SERVOPACK is placed in the BB state while the main circuit power supply is OFF, the HWBB state
will be maintained until the /S-ON (Servo ON) signal is turned OFF.
2. If the /S-ON (Servo ON) signal is set to be always active (Pn50A = n.7), you cannot reset the HWBB
state. Do not set this value if you are using the HWBB.
/HWBB1
/HWBB2
ON (normal operation)
/S-ON
(Servo ON
Input Signal)
ON
OFF
BB state HWBB state
Operating state
SERVOPACK
Status
OFF (motor current shut-OFF request)
/HWBB1
/HWBB2
OFF (motor current
shut-OFF request)
/S-ON (Servo
ON Input Signal)
SERVOPACK
Status
HWBB state
OFF
ON
Operating Status
BB state
ON (normal operation)
/HWBB1
/HWBB2
OFF (motor current
shut-OFF request)
/S-ON (Servo
ON Input Signal)
ON
HWBB state BB state
Operating
Status
OFF
ON
SERVOPACK
Status
ON (normal operation)