IAI America ERC - Manual (Page 90)

70
(4) Positioning band was entered with a wrong sign
If the positioning band is entered with a wrong sign,
the position will deviate by twice the positioning
band, as shown to the left, so exercise due caution.
5.2.3 Speed Change during Movement
Speed control involving multiple speed levels is possible in a single operation. The actuator speed can be
decreased or increased at a certain point during movement.
However, the position at which to implement each speed change must be set.
5.2.4 Operation at Different Acceleration and Deceleration Settings
The actuator will accelerate and decelerate at different speeds if “1” is entered under “Acceleration only MAX” in
the position data.
The acceleration will conform to the maximum acceleration set according to the load, while the deceleration will
conform to the value entered in “Acceleration/deceleration” of the position data.
Note: The maximum acceleration varies from actuator to actuator, but the limit is generally three times the
rated acceleration.
Accordingly, enable this function only when the transferring mass is one-third the rating or less and
you want to decelerate the actuator over a gradual acceleration curve when stopping.
If this function is enabled when the transferring mass is equal to the rating, an overload error may
occur.
Exercise due caution because even if an overload error does not occur, the actuator will receive an
excessive impact load and its life will be negatively affected.
Check the payload rating by referring to 1.3, “Specifications.”
Spee
d
Moving distance
Positioning
band
Positioning
band
Spee
d
Maximum acceleration
according to the load
Time
Position 1 Position 2 Position 1 Position 2 Position 1 Position 2 Position 3
Deceleration can be set freely