IAI America RCS-E - Manual (Page 81)

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 Movement flag during stop
This parameter defines whether to enable or disable the dynamic brake while the actuator is stopped.
It has been set to “1” (Enable) at the factory.
This parameter need not be changed in normal conditions of use, but there are situations where the actuator must
be moved by hand with the servo turned OFF but the actuator does not move smoothly due to large slide
resistance (this often occurs with actuators having a short ball screw lead).
In this case, you can change the value of parameter No. 14 to “0” (Disable) to release the dynamic brake and
make the actuator move smoothly.
Caution: Before resuming normal operation, be sure to reset this parameter to “1” (Enable).