1.2 Specifications
1-29
1. Specifications
Duty ratio
The duty ratio is the operating rate,
shown in %, of the actuator operating
time within one cycle.
As the reference for duty available to use may differ depending on the operation conditions
(payload, acceleration / deceleration, etc.), it is necessary to figure out the load factor LF and
acceleration / deceleration time ratio t
od
using the calculation formulae below and find it out from
the graph.
1) Figure out the load factor LF using the calculation formulae below.
Maximum payload at the acceleration 0.3G is described in 1.2 Specifications.
2) Figure out the acceleration / deceleration time ratio t
od
using the calculation formulae
below.
Acceleration / Deceleration Time Ratio t
od
=
Acceleration Time during Operation + Deceleration Time during Operation
Duration of Operation
[%]
Acceleration Time =
Velocity during Operation [mm/s]
Acceleration during Operation [mm/s
2
] [sec]
Acceleration [mm/s
2
] = Acceleration [G] × 9,800mm/s
2
Deceleration Time =
Velocity during Operation [mm/s]
Deceleration during Operation [mm/s
2
] [sec]
Deceleration [mm/s
2
] = Deceleration [G] × 9,800mm/s
2
[When indicated acceleration / deceleration is at
acceleration / deceleration 0.3G or below]
Load Factor: LF =
M×α
M
r
×0.3
[%]
Max. Payload at Acceleration 0.3G
: M
r
[kg]
Acceleration / Deceleration 0.3G : 0.3 [G]
Payload during Operation : M [kg]
Acceleration during Operation : α [G]
[When indicated acceleration / deceleration is at
acceleration / deceleration 0.3G or above]
Load Factor: LF =
M×α
M
d
×α
=
M
M
d
[%]
Payload at Indicated Acceleration : M
d
[kg]
Payload during Operation : M [kg]
Acceleration during Operation : α [G]
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