Table of Contents
Advertisement
iXC4e/XC4e
2.8. External Shunt Option [-SX1]
The -SX1 option provides a connection for a user-provided shunt resistor to dissipate excess energy
and keep the internal drive voltage within safe levels. The drive switches this resistor "ON" when the
internal bus voltage reaches approximately 380 VDC. This option is generally required for systems
that have a large amount of stored mechanical energy that must be dissipated during deceleration.
DANGER: Shock and Fire Hazard
Electrical wiring must be designed and installed in accordance with local electrical
safety regulations to prevent the risk of fire and electrical shock.
The shunt resistor dissipates a high quantity of power. To prevent the danger of electric
shock or fire, you must obey the precautions that follow:
Correctly size, mount, and protect the external shunt resistor.
l
Do not touch the shunt resistor terminals. There are lethal voltages on the terminals.
l
Do not touch the surface of the drive or the external shunt resistor. The temperature
l
can exceed 70°C.
Restrict access to the shunt resistor while it is connected to a power source.
l
Table 2-54:
-SX1 Component Information
Component
Recommended Shunt Resistor
1-Pin Mating Connector [QTY. 2]
F101 Fuse on the Control Board
Recommended Wire Size
Equation 1:
Calculate the kinetic energy of the system. Any energy that is not lost to the system could be
regenerated to the DC bus.
E
= [1/2][J
M
E
= [1/2][M
M
Where:
J
M
J
L
ꞷ
M
M
M
M
L
v
M
82
Description
50 Ω (min), 300 W
Vishay/Dale: RBEF030050R00KFBVT
Screw Torque Value: 0.6 - 0.8 N·m
Wire Size: 0.2 - 6 mm
Phoenix: 0708250
8 A S.B.
16 AWG (1.3 mm
2
+ J
]ꞷ
M
L
M
2
+ M
]v
M
L
M
= rotor inertia (kg·m
= load inertia (kg·m
= motor speed before deceleration (rad/s)
= forcer mass (kg)
= load mass (kg)
= velocity (m/s)
2
[24-10 AWG]
2
) High Temperature
; rotary motors
; linear motors
2
)
2
)
Hardware Manual
Aerotech P/N
ECR01039
ECK02452
EIF01022
--
www.aerotech.com
Advertisement
Table of Contents
