Yaskawa FSP Amplifier - Manual (Page 341)

FSP Amplifier User’s Manual Appendix C: Specifications for Peripheral Devices
C-10
Servo Amplifier Capacity of 0.5 kW to 3.0 kW
Servomotors with a capacity of 500 W to 3 kW have built-in regenerative
resistors. The allowable frequencies for just the servomotor during
acceleration/deceleration operation, in the run cycle from 0 Æ maximum
rotation speed Æ 0, are summarized in the following table.
Convert the data into the values obtained with actual rotation speed used
and load inertia to determine whether an external regenerative resistor is
needed.
Series Allowable Frequencies in Regeneration Mode (r/min)
Voltage Capacity
Symbol
03 05 08 09 10 13 15 20 30 40 44 50
SGMAH-‰A — — 89 — — — — — — — — —
SGMPH-‰A — — 29 — — — 17 — — — — —
SGMGH-‰A 34 — 13 — 10 — 12 8 — 11 —
200 V
SGMSH-‰A — — — — 39 — 31 48 20 29 — 22
SGMGH-‰D — 42 — 15 — 10 — 12 8 — 11 —
SGMSH-‰D — — — — 47 — 31 48 20 29 — 22 400 V
SGMUH-‰D — — — — 27 — 19 — 13 19 — —
Operating Conditions for Allowable Regenerative
Frequency Calculation
Use the following equation to calculate the allowable frequency for
regeneration mode operation.
Allowable frequency =
n) (1
only servomotor for frequency Allowable
+
x
2
used speed Rotation
speed rotation . Max
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
Minute
Cycles
Where: n = J
L
/J
M
J
L
: Motor axis conversion load inertia [oz·in·s 2 (kg·m 2 )]
J
M
: Servomotor rotary inertia [oz·in·s
2
(kg·m
2
)]