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Sigma II User's Manual
If the previous calculation determines that the amount of regenerative power (Wk)
that can be processed by the built-in resistor is not exceeded, then an external regen-
erative resistor is not required.
If the amount of regenerative power that can be processed by the built-in resistor is
exceeded, install an external regenerative resistor for the capacity obtained from the
above calculation.
If the energy consumed by load system loss (in step 2 above) is unknown, then per-
form the calculation using E
When the operation period in regeneration mode is continuous, add the following
items to the above calculation procedure in order to find the required capacity (W)
for the regenerative resistor.
•
Energy for continuous regeneration mode operation period: E
•
Energy consumed by regenerative resistor: E
•
Required capacity of regenerative resistor: W
Here, E
G
τ G
: Servomotor's generated torque [oz·in (N·m)] in continuous regeneration
•
mode operation period.
: Servomotor rotation speed (rpm) for same operation period as above.
•
N
MG
: Same operation period (s) as above.
•
t
G
Servomotor Winding Resistance Loss
The following diagrams show the relationship between the generated torque and the
winding resistance loss for each servomotor.
• SGMAH Servomotor, 200V
300
250
200
(W)
150
100
50
0
0
100
= 0.
L
MG × τ G ×
π
= (2
/60) N
SGMAH-
04A
08A
01A, 02A
A5A
A3A
200
300
Torque (%)
Chapter 5: Parameter Settings and Functions
E
=
K
= E
K
t
G
• SGMAH Servomotor, 100V
200
180
160
140
120
(W)
100
80
60
40
20
0
0
5-87
(joules)
G
- (E
+ E
+ E
) + E
S
L
M
C
G
×
/ (0.2
T)
K
SGMAH-
100
200
Torque (%)
01B
02B
A5B
A3b
300
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