5-71
Step Item Formula Description
1
Calculate the working Energy of
the servo system.
182/=
2
rmTM
ωJE
M
E
: Working Energy of Servo system (J)
T
J : Inertia applied to the motor shaft
(
2
• mkg )
rm
ω : Motor running Speed(rpm)
2
Calculate the Energy
consumption by the load during
deceleration.
DLrmL
tTωπE )60/(=
L
E
: The Energy during deceleration (J)
L
T : Loading Torque(Nm)
D
t : The Time from deceleration to stopping(s)
3
Calculate the Energy absorbed by
internal main capacitor.
C
E Check the diagram above
C
E : The Energy absorbed by the main
capacitor (J)
4
Calculate the Energy which
regeneration resistor consumes
)+(-=
CLMR
EEEE
R
E : The Energy which Regeneration Resistor
consumes (J)
5
Calculate the Power for
regeneration resistor
4.0/)/(= TEP
RR
R
P : Regeneration Resistor Power(W)
: Operating cycle for servo system(s)
Note 1: 0.4 in the formula for
R
P corresponds to 40% regeneration duty cycle.
Note 2: If the
L
E can not be calculated, then let 0=
L
E , then calculate ER.
In applications with regenerative loads, which cause reverse torque, a large amount of
energy will flow back to the driver.
In such applications, calculate ER and hence regeneration resistor power according to
the formula below.
Item Formula Description for Symbols
Calculate the working Energy
during the continuous
regenerative period.
GGGrmG
tTωπE
,
)60/(=
G
E : Working Energy during the regenerative
period. (J)
Grm
ω
,
: Motor running speed during the
regenerative period . (rpm)
G
T : Loading Torque during the regenerative
period (Nm)
G
t : Regenerative Time. (s)
The formula for step 4 in the previous table will be:
GCLMR
EEEEE +)+(-=
5-6-8 Fan Setting
Available models that equipped with the fan.
Parameter Name Setting Description
Control
Mode
0 Auto-run by internal temperature sensor.
1 Run when Servo ON
2 Always Running.
Cn031.0
Cooling fan running
mode
3 Disabled.
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