Mitsubishi Electronics Q172HCPU, Q173HCPU POINTS, (1) Stroke limit range check, 4 PARAMETERS FOR POSITIONING CONTROL

4 PARAMETERS FOR POSITIONING CONTROL

(1) Stroke limit range check

The stroke limit range is checked at the following start or during operation.

Operation start			Check	Remarks
				• It is checked whether the feed current value is within the
				stroke limit range or not at the positioning start. If it
• Position follow-up control				outside the range, an error occurs (error code: 106) and
• Constant-speed control				positioning is not executed.
• Speed switching control			Check	• If the interpolation path exceeds the stroke limit range
• Positioning control				during circular interpolation start, an error occurs (error
• Fixed-pitch feed control				codes: 207, 208) and deceleration stop is executed.
				• If the current value exceeds the stroke limit range,
				deceleration stop is executed.
• Speed control (	)			• The current value becomes "0", and operation continues
			Not check	until the external limit signal (FLS, RLS, STOP) is
• Speed control (		)
				received.
• Speed/position switching				• It is checked after the switch to position control.
control (including restart)
				• When the current value is executed a deceleration stop
				from current command speed, if the current value
• JOG operation				exceeds the stroke limit range, a deceleration stop is
				made before a stroke limit. (Error code: 207) Travel to
			Check
				the direction that returns the axis into the stroke range
				is possible.
				• If the current value exceeds the stroke limit range, it
• Manual pulse generator				stops at stroke limit. (Error code: 207) In this case, a
operation				deceleration stop is not made. Travel to the direction
				that returns the axis into the stroke range is possible.

POINTS

(1)Besides setting the upper/lower stroke limit value in the fixed parameters, the stroke limit range can also be set by using the external limit signals (FLS, RLS).

(2)When the external limit signal turns off, a deceleration stop is executed. "Deceleration time" and "Rapid stop deceleration time" can be used in the parameter block for deceleration stop time.

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