Specifications

MODELS 7225AC, 7425AC
LINE-POWERED AC BRUSHLESS SERVO AMPLIFIERS
WITH ±10V ANALOG U-V INPUTS
Copley Controls Corp, 20 Dan Road, Canton, MA 02021, USA Tel: [phone] Fax: [phone]
E-mail: [e-mail], on the Internet at http://www.copleycontrols.com Page 1 of 12
FEATURES
Complete line-powered servo
amplifier for AC brushless
motors with external
sinusoidal commutation
Off-the-line powered:
32~132VAC, 32~264VAC
50/60Hz, single-phase
No transformer required
Optically isolated power and
signal stages
Separate motor and signal
Sub-D type connectors
FAIL-SAFE ENABLE INPUT
Ground or +5V
active level selection
FAULT PROTECTIONS
Short-circuits
output to output
output to ground
Over / under voltage
Over temperature
Self-reset or latch-off
CURRENT LIMIT
With no loss of Phasing and
alert signal for control
system
3kHz Bandwidth
Wide load inductance range
0.4~ 40 mH.
WORKS WITH POPULAR
CONTROLLERS
ACS-Tech80 5651A
ACS-Tech80 SPiiPlus series
PMD MC1231A Chipset
Delta Tau PMAC
MEI DPS Series
Galil DMC-1700
THE OEM ADVANTAGE
Internal header configures
amplifier for plug and play
operation
Conservative design for high
MTBF
FEATURES
The 7xx5AC models are PWM
servoamplifiers for AC brushless
servomotors that are commutated
externally by digital control systems that
output two +/-10V signals that represent
the current command to the motor U
and V windings. The amplifier then
synthesizes the current command for
the W winding.
Control cards take feedback from an
encoder on the motor and use various
techniques to determine the rotor
position. When this has been done, the
controller is able to output two signals
that correspond to the current in the U
and V windings to produce torque in the
motor. The amplifier synthesizes the W
winding current from UV signals that are
either 120 or 90 electrical degrees
apart.
Amplifier adjustments with this system
consist of inductance compensation,
current limit, transconductance, and
offset. Thereafter, the controller does all
of the velocity and/or position control of
the motor.
An internal 40-pin solderless socket lets
the user configure the various gain and
current limit settings to customize the
amplifiers for a wide range of loads and
applications. Header components permit
compensation over a wide range of load
inductance's to maximize bandwidth
with different motors.
MODEL POWER I-CONT
(
A
)
I-PEAK
(
A
)
7225AC 32~132VAC 10 20
7425AC 32~264VAC 10 20
Current limiting is provided via an
internal solderless header socket or by
an external resistance or voltage
applied to the signal connector.
The /Enable input active logic-level is
switch-selectable to ground or +5V to
interface with all types of control cards.
Fail-safe operation in either polarity
results from an internal jumper that
selects the default input level and input
resistor pull-up or pull-down connections
so that the amplifier shuts down with no
input.
MOSFET (7225AC) and IGBT (7425AC)
output stages deliver four-quadrant
power for bi-directional acceleration and
deceleration of motors. For high-inertia
loads, an external regenerative energy
dissipater is available.
All models are protected against output
short circuits (output to output and
output to ground) and heatplate
overtemperature. With the /Reset input
open the amplifier will latch off until
powered-down or the /Reset input is
toggled. The amplifier will reset itself
automatically from faults if the /Reset
input is wired to GND.
Phone: [phone]
Phone: 877-IP-Tech1
Fax: 877-IP-Tech2
www.iptech1.com
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