Stopping Methods; Alm (Servo Alarm) Signal And /Alo1, /Alo2 - YASKAWA E-7S SERVOPACK SGD7S Product Manual

11.2.9

Stopping Methods

If the /HWBB1 or /HWBB2 signal turns OFF and the HWBB operates, the Servomotor will stop
according to the stop mode that is set for stopping the Servomotor when the servo turns OFF
(Pn001 = n.X). However, if the dynamic brake is enabled (Pn001 = n.0 or
n.1), observe the following precautions.
 The dynamic brake is not a safety-related element. You must design the system so that a
hazardous condition does not occur even if the Servomotor coasts to a stop in the HWBB
state. Normally, we recommend that you use a sequence that returns to the HWBB state
after stopping for a reference.
 If the application frequently uses the HWBB, stopping with the dynamic brake may result in
the deterioration of elements in the SERVOPACK. To prevent internal elements from deterio-
rating, use a sequence in which the HWBB state is returned to after the Servomotor has
come to a stop.
11.2.10 ALM (Servo Alarm) Signal and /ALO1, /ALO2, and /ALO3
(Alarm Code Output) Signals
The ALM (Servo Alarm) signal and the /ALO1, /ALO2, and /ALO3 (Alarm Code Output) signals
are not output in the HWBB state.
11.2 Hard Wire Base Block (HWBB)
CAUTION

11.2.9 Stopping Methods

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