Yaskawa Electric SERVOPACK AC Input 3 Phase 200-230V Industrial
Servo Drives SGDB-30VDY1
Quick Details
Model Number:SGDE-08AS
Input Voltage:200-230V
Input Frequency:50/60HZ
Input PH : 1
Input AMPS:11.0
Series : Sigma 2 (Σ-II Series)
Output Power : 750W
Output Voltage: 0-230V
Output AMPS: 4.4
Place of Origin:Japan
Efficiency:IE 1
The Yaskawa SGDB Sigma Series Servopacks are Amplifiers for the
Sigma Series of AC Servos. Designed for applications requiring
multi-drives, the SGDB can be used for speed control, torque
control, and position control. A digital operator can be used to
set parameters for a Servopack.
Product Family: SGDB-05ADG, SGDB-10ADG, SGDB-15ADG, SGDB-20ADG,
SGDB-30ADG, SGDB-44ADG, SGDB-60ADG, SGDB-75ADG, SGDB-1AADG,
SGDB-1EADG
Important Notice: Please note that any additional items included with this
equipment such as accessories, manuals, cables, calibration data,
software, etc. are specifically listed in the above stock item
description and/or displayed in the photos of the equipment. Please
contact one of our Customer Support Specialists if you have any
questions about what is included with this equipment or if you
require any additional information.
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The coil itself is shown on the left in Figure 1.6 while the Xux
pattern produced is shown on the right. Each turn in the coil
produces a Weld pattern, and when all the individual Weld
components are superimposed
we see that the Weld inside the coil is substantially increased and
that the closed Xux paths closely resemble those of the bar magnet
we looked at earlier. The air surrounding the sources of the Weld
oVers a homogeneous path for the Xux, so once the tubes of Xux
escape from the concentrating inXuence of the source, they are free
to spread out into the whole of the surrounding space. Recalling
that between each pair of Xux lines there is an equal amount of
Xux, we see that because the Xux lines spread out as they leave the
conWnes of the coil, the Xux density is much lower outside than
inside: for example, if the distance ‘b’ is say four times ‘a’ the
Xux density Bb is a quarter of Ba.
Although the Xux density inside the coil is higher than outside, we
would Wnd that the Xux densities which we could achieve are still
too low to be of use in a motor. What is needed Wrstly is a way of
increasing the
Xux density, and secondly a means for concentrating the Xux and
preventing it from spreading out into the surrounding space.
Feedforward Control
In order to achieve near zero following or tracking error,
feedforward control is often employed. A requirement for
feedforward control is the availability of both the velocity, w*(s)
and acceleration, a*(s) commands synchronized with the position
commands,?q*(s). An example of how feedforward control is used in
addition to disturbance rejection control is shown in Fig. 8.
Feedforward control is used to calculate the required torque needed
to make the desired move.
The basic equation of motion is given in equation (10).
Tmotor d -TJb = a + w (10)
Since the disturbance torque, Td , is unknown, the estimated motor
torque can only be
approximated as shown in equation (11).
ˆ ˆ Estimated Torque s = Ja* * s + wb s (11)
In most cases, the disturbance torque is small enough that
estimated torque is very near the required torque. If this is the
case, and if the velocity and acceleration commands are available,
simple estimates of the total inertia and viscous damping can be
used to generate the estimated torque profile in real time without
any delay. Continuing with our example, the contributions to the
estimated torque by the velocity and acceleration commands are
shown in Figs. 9 a) and b) respectively. The composite feedforward
signal is shown in Fig. 9 c)
OTHER SUPERIOR PRODUCTS
| Yasakawa Motor, Driver SG- | Mitsubishi Motor HC-,HA- |
| Westinghouse Modules 1C-,5X- | Emerson VE-,KJ- |
| Honeywell TC-,TK- | GE Modules IC - |
| Fanuc motor A0- | Yokogawa transmitter EJA- |
