Restrictions With A System Using A Stepping Motor; Function Additions/Modifications According To Function Version B - Mitsubishi QD75P1N User Manual

1 PRODUCT OUTLINE

1.3 Restrictions with a system using a stepping motor

1.4 Function additions/modifications according to function version B

Function
Multiple CPU compatible function
Speed-position switching control (ABS mode)
Pre-reading start function
External I/O signal monitor function
Deceleration start flag function
Stop command processing for deceleration stop
function 3
1: For the QD75P /QD75D , this function is available in GX Developer (SW6D5C-GPPW-E or later). For details, refer to
GX Developer Operating Manual.
For the QD75P N/QD75D N, external I/O signals cannot be monitored on GX Developer. Use the system monitor of
GX Works2. For details on the system monitor of GX Works2, refer to GX Works2 Version 1 Operating Manual
(Common).
2: For the QD75P /QD75D , this function is available for modules whose serial No. (first five digits) is "03042" or later.
3: For the QD75P /QD75D , this function is available for modules whose serial No. (first five digits) is "05072" or later.
Note the following restrictions applicable to a system that uses a stepping motor:
(1) For the system that uses a stepping motor, executing the S-curve
acceleration/deceleration may cause step-out.
Before using the S-curve acceleration/deceleration, confirm that step-out does
not occur.
(2) Although setting the bias speed at start is required by the characteristics of the
stepping motor, the setting of the bias speed at start is disabled for circular
interpolation control.
POINT
When it is desired to check the following items, refer to the corresponding
explanation sections.
How to check the function version and SERIAL No. (Refer to Section 2.4)
The following function additions/modifications according to the function version B of the
QD75:
Refer to QCPU User's Manual (Multiple CPU System).
Function which starts the axis under speed control,
switches to position control at the external command
signal input, then positions the axis to a stop at the
designated address.
Function which shortens virtual start time.
Function which monitors the external I/O signal monitor
information in the module's detailed information which
can be displayed on the system monitor of GX
Developer
Function that turns ON the flag when the constant
speed status or acceleration status switches to the
2
deceleration status during position control whose
operation pattern is "Positioning complete".
Function that selects a deceleration curve when a stop
cause occurs during deceleration stop processing to
speed 0.
Outline
1.
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MELSEC-Q
Reference
Section 9.2.17
Section 12.7.7
Section 13.5
Section 12.7.8
Section 12.7.9