9 duty ratio in continuous operation – IAI America RCAW User Manual
Page 30
1. Specifications Check
24
1.2.9 Duty Ratio in Continuous Operation
Perform an operation with the duty ratio below the allowable range.
Duty ratio is the rate of operation expressed in % that presents the time of the actuator being operated in
1 cycle of operation.
Caution: If the overload error occurs, try either to reduce the duty by extending the stop time or to
reduce the acceleration/deceleration speed.
[How to Calculation Duty]
Figure out the load ratio and acceleration/deceleration time ratio, and read the duty ratio from the graph.
If the load ratio if less than 50%, operation with 100% of the duty ratio (continuous operation) is
available.
1) Duty ratio LF
The maximum transportable weight at the rated acceleration and the rated acceleration/deceleration
speed are described in 1.2 Specifications.
Duty ratio:LF䋽
[%]
Max. Transportable Weight at Rated Acceleration : Mr [kg]
Rated Acceleration/Deceleration Speed
: Dr [G]
Transported Weight during Operation
: M [kg]
Acceleration/Deceleration Speed during Operation : D [G]
2) Acceleration/Deceleration Time Ratio t
od
Acceleration/Deceleration Time Ratio t
od
=
Acceleration Time during Operation + Deceleration Time during Operation
Deceleration time
[%]
Acceleration time =
Speed during Operation[mm/s]
Acceleration during Operation[mm/s
2
]
䌛
Sec䌝
Deceleration time =
Speed during Operation [mm/s]
Deceleration during Operation [mm/s
2
]
䌛
Sec䌝
Acceleration [mm/s
2
] = Acceleration [G] u 9,800mm/s
2
Deceleration [mm/s
2
] = Deceleration [G] u 9,800mm/s
2
M×D
Mr×D