Yaskawa SGDH Linear Sigma Series - Manual (Page 381)

12.2 Calculating the Required Capacity of Regenerative Resistors
12-5
12
Note: The model with (-M) is the combination model with a standard-type coil assembly and a
high-force-type magnetic way.
Fig. 12.1 Operating Conditions for Allowable Regenerative Frequency Calculation
Use the following equation to calculate the allowable frequency for regenerative mode operation.
SGLTW- 20A170A 8
Twice of coil
assembly mass
20A320A 4
20A460A 2
35A170A 6
35A320A 2
35A460A 2
35A170H 3
35A320H 1
50A170H 4
50A320H 1
40A400B 1
Linear Servomotor Model
Allowable Frequencies in
Regenerative Mode (times/min.)
Load Condition
(Including Coil
Assembly)
Speed reference
Servomotor speed
Servomotor-generated force
Regene-
ration
mode
T
(Operating cycle)
Allowable frequency = 1/T (times/min)
Maximum speed
Maximum force
0
Maximum force
0
0
t
t
t
Allowable frequency = ×
n = / 15
Allowable frequency in regenerative mode (times)
n
n = / 3
W
W M
W
W M
Peak speed
Used speed
2
times/min
y n For SGLGW,
y W M Linear servomotor coil assembly mass
y W Load mass (including coil assembly)
For SGLTW and SGLFW,
excluding SGLTW-40 and -80)
n =
W
W M
For SGLTW-40 and -80,