IAI America RCS3PCR-SS8C - Manual (Page 17)

9
6.
Warning: If an overload error occurs, extend the stopped time to lower the duty or decrease the
acceleration/deceleration speed.
[How to Calculate Duty]
Perform operation with the duty ratio at the allowable value or less.
Duty ratio is the operation rate, in time basis, of the actuator in 1 cycle that is indicated with “%” .
Figure out the load rate and acceleration/deceleration speed time ratio by calculation and read the duty ratio from
the graph.
When the load rate is less than 50%, an operation with 100% duty ratio should be available.
[2] Acceleration/deceleration time ratio t
od
(%)
time Operating
Acceleration time
during operation
Deceleration time
during operation
Acceleration/deceleration time ratio t
od
Acceleration (mm/s 2 ) = Acceleration (G) × 9,800 mm/s 2 Deceleration (mm/s 2 ) = Deceleration (G) × 9,800 mm/s 2
(sec.) Acceleration time
Velocity at
operation (mm/s)
Acceleration during
operation (mm/s 2 )
(sec.) Deceleration time
Velocity at
operation (mm/s)
Deceleration during
operation (mm/s 2 )
(%)
Mr r
M
Load factor :LF
[1] Load factor LF
It is descried in 2. Specifications regarding the maximum transportable weight at the rated acceleration and
rated acceleration/deceleration.
Acceleration/deceleration during operation
Transferring mass during operation
Rated acceleration/deceleration
Maximum transportable weight at the rated acceleration (kg)
(G)
(kg)
(G)
Example) If the load factor LF is 80% and acceleration/deceleration time ratio t
od
is 80%, the reference duty
is approx. 75%.
[3] Read the duty ratio from the load rate LF and the acceleration speed time ratio t
od
that were used to figure
out the duty ratio.
LF = 100%
LF = 80%
LF = 60%
LF = Less than 50%
50%
75%
45%
LF = 125%
LF = 70%
LF = 90%
LF = 150%
LF = 200%
Acceleration/deceleration time ratio t (%)
Approx.
od
High Acceleration/Deceleration Type
High Acceleration/Deceleration Type
High Acceleration/Deceleration Type
Reference of Operation Duty (%)
LF = 330%
High Acceleration/Deceleration Type