82
Chapter 2
www.aerotech.com
V
M
= turn on voltage for shunt circuit (V) (= 380 V)
P
PEAK
= peak power that the regeneration circuit must accommodate (W)
Equation 4:
D
NOM
M
M
PEAK
t
V
V
C
E
P
)
(
2
1
2
2
−
−
=
(W)
E
M
= kinetic energy of load minus system losses (Joules)
C
= Bus capacitor (Farads)
V
M
= turn on voltage for shunt circuit (V) (=380 V)
V
NOM
= nominal Bus voltage (V) (160 V or 320 V Typical)
t
D
= time to deceleration (seconds)
Equation 5:
(
)
CYCLE
HYS
M
M
AV
t
V
V
C
E
P
2
2
2
1
−
−
=
(Watts)
t
CYCLE
= time between deceler time to deceleration (seconds)
V
HYS
= hysteresis point of regeneration circuit (=10 V)
Additional useful equations:
1 lb-ft = 1.356 Nm
[
]
M
T
m
l
n
D
I
K
J
J
t
*
ω
+
=
(Useful as an estimate if the deceleration time is unknown)
Angular Acceleration
π
ω
α
2
*
dt
d
=
(radians / revolution)
Torque
m
t
I
K
T
*
=
Load Inertia
α
T
J
L
=
Ensemble CP
Installation and Configuration
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
