Aerotech UNIDEX 600 Series, User Manual

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Parameters U600 User’s Guide
C-42
Aerotech, Inc.
Version 1.4
C.2.96. SYNCSPEED
To understand this axis parameter, the user must be familiar with the operation of the
synchronized motion through the CAM tables on the UNIDEX 600 Series motion
controller. For a brief discussion of this feature, refer to the discussion of the
MASTERPOS axis parameter. There are two modes that the user can perform CAM
table execution. In the first mode, the system assumes that the current slave position is the
starting point of the CAM table. Also, the system assumes that all slave position entries
are relative to that starting point. The second mode of CAM table execution does not
make that assumption. Instead, it interprets the slave positions found within the CAM
table as absolute positions. With synchronization enabled, the system determines the
current location within the CAM table based on the current master position. The slave
axis then moves to the position that corresponds to the current master position. This
parameter defines the speed at which the slave axis is to move.
C.2.97. SYSTEMCLOCK
This axis parameter is the same as the CLOCK axis parameter, but is read-only.
C.2.98. VELCMDTRAP
This axis parameter determines the maximum commanded velocity that the axis may
move, in counts per second. A command trap occurs if the commanded velocity exceeds
the amount specified in this parameter. The user may enter a zero to disable the
commanded velocity trap detection.
Be sure to set the Velocity Command Trap bit in the FAULTMASK axis parameter to
enable the detection of this fault, then set the bit in the appropriate mask parameter
(DISABLEMASK, HALTMASK, AUXMASK, ABORTMASK, INTMASK and
BRAKEMASK) for the action to occur on this fault.
This parameter applies to all types of motion.
When using the MaxFeedRateIPM (or MaxFeedRateRPM for rotary axis)
machine parameters, this parameter cannot be used. Its value will be overwritten.
Consider using the MaxFeedRateIPM or MaxFeedRateRPM parameters as an
alternative method to limit axis speeds.
C.2.99. VELPOSITION
This axis parameter is the axis position as calculated by integrating the velocity from the
secondary feedback device. The primary feedback device will be used for this calculation,
if no secondary feedback device is present.