Mitsubishi Electric TM-RFM, Инструкция по эксплуатации

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APPENDIX
App. - 2
(3) Temporary selection of direct drive motor
Selection conditions
Acceleration/deceleration torques of load < maximum torque of DD motor
Load moment of inertia < J
R
× moment of inertia of DD motor
J
R
: Recommended load to motor inertia ratio
From the above, the following direct drive motor is temporarily selected.
TM-RFM018E20 (rated torque: 18 [N•m], maximum torque: 54 [N•m], moment of inertia: 149 × 10
-4
[kg•m 2 ])
(4) Acceleration/deceleration torque
Torque necessary for acceleration
T
Ma
=
(J
L
+ J
M
) × N
o
9.55 × t
psa
= 38.3 [N•m]
J
M
: Moment of inertia of DD motor
Torque necessary for deceleration
T
Md
= -
(J
L
+ J
M
) × N
o
9.55 × t
psd
= - 38.3 [N•m]
The torque required for acceleration/deceleration must be lower than the DD motor's maximum torque.
(5) Continuous effective load torque
Tr
ms
=
T
Ma2
× t
psa
+ T
L
2
× t
c
+ T
Md
2
× t
psd
t
f
= 13.5 [N•m]
t
c
: t
0
- t
s
- t
psa
- t
psd
The continuous effective load torque must be lower than the DD motor's rated torque.
(6) Torque pattern
Time [s]
0.1 0.1
38.3
-38.3
0
0.125 0.125
2.0
Torque
[N•m]