Mitsubishi FR-A5AP Oven User Manual


 
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1) Selection of servo torque function until the in-position signal is output.
Set Pr. 358 "servo torque selection" to determine whether servo torque is required or not. When the current
position signal is between the orientation stop position and DC dynamic braking start position, servo torque is
not generated. The shaft is held by DC dynamic braking. If the current position signal comes out of this zone
due to external force, etc., servo torque is generated to return the current position signal to within the zone.
Once the in-position signal is output, operation is performed in accordance with the setting in 4).
2) Retry function.
Set Pr. 358 "servo torque selection" to determine whether the retry function is required or not. Note that this
function cannot be used with the servo torque function. If the motor shaft is confirmed to have stopped but is
not in the in-position zone, the retry function causes the shaft to be oriented again.
This retry is made three times, including the first orientation, but no more than three times. (The orientation
fault signal is not output during retry operation.)
3) Frequency compensation function for use when the motor shaft has stopped outside the in-position zone.
When the motor shaft has been stopped by external force, etc. before entering the in-position zone, the output
frequency is increased to move the shaft to the orientation stop position. This output frequency rises gradually
to the creep speed set in Pr. 352. This function cannot be used with the retry function.
4) Selection of whether DC dynamic braking or servo torque is started when the motor shaft comes out of the in-
position zone after the in-position signal has been output once.
You can select whether to start DC dynamic braking to lock the shaft or to start servo torque to return the shaft
to the orientation stop position if the motor shaft comes out of the in-position zone due to external force, etc.
after the output of the in-position signal.
5) Selection of DC dynamic braking, servo torque or orientation termination timing.
To terminate orientation, switch off the start signal (STF or STR) and then switch off the orientation command
(X22). At this time, you can select the point of switching off the in-position signal between when the start signal
is switched off or when the orientation command is switched off.
6) In-position signal OFF selection; for use when the motor shaft comes out of the in-position zone after the in-
position signal is output once. You can select either the mode in which the in-position signal is switched off
when the motor shaft comes out of thein-position zone or the mode in which the in-position signal remains on
(orientation fault signal is not output) when the motor shaft comes out of the in-position zone.