RC-050 Datasheet, PDF (1/3 Pages) List of Unclassifed Manufacturers – Regeneration Clamp

Regeneration Clamp
404 Westridge Dr. • Watsonville, CA  95076
831/761-6555 • 800/525-1609 • FAX [phone]
www.appliedmotionproducts.com
RC-050
Features
The RC-050 is mounted on a heat sink and has a
50 watt power resistor for more continuous cur-
rent handling.
Size: 
RC-050 is 3² x 4² x 2.25² tall.
Voltage Range: 
24 to 80 VDC, no user adjustments.
Peak Power:
RC-050 – 800 Watts.
Continuous Power:
RC-050 – 50 Watts.
Connection: 
6 pin screw terminal block accepts 12 – 18 guage
wire.
Indicators: 
A green led indicates power supply voltage is
present. A red led indicates when the clamp is op-
erating. This is typically a very short time since it
is only on when the servo is decelerating.
Protection: 
The power supply is internally connected to an
“Input Diode” that protects it from the higher re-
generation voltages. The diode protects the sys-
tem from connecting the power supply in reverse.
If the clamp circuit were to fail the diode will con-
tinue to protect the power supply from over-volt-
age.
Description
As with most servo systems a clamp circuit is re-
quired to limit increase power supply buss voltage
when the motor is decelerating under load. This is
commonly referred to as “regeneration” which is
what happens when DC motors are driven by their
load. During regeneration the DC motor can produce
enough voltage to actually exceed the input power
supply voltage. More sophisticated servo amplifiers
deal with this by channeling the increased motor
voltage back to the source power supply. If the volt-
age is not clamped to a safe level the amplifier can
be damaged or destroyed.
The SV7 servo amplifier/controllers are types that
channel the increasing voltage back to the input
power supply. In some cases this can be handled
by placing a significant size capacitor at the input to
“absorb” the voltage impulse. However, this is often
not enough especially in cases where a large inertial
mass is being decelerated.
For this reason Applied Motion Products offers a
“Regen Clamp” module for our servo drive prod-
ucts. With this module one or more servo drives
can be protected from “Over Voltage” conditions by
placing the clamp module between the power sup-
ply and the drive. The clamp tracks the input power
supply and will operate from 24 to 80 volts. No ad-
justments are needed.
The Regen Clamp is designed to handle a wide
range of conditions. The voltage input matches the
needs of the AMP servo drives by providing 24 to
80 VDC capabilities. The clamps come in different
versions for moderate to high power operation. Ex-
ternal power resistors can be added for even greater
continuous power requirements. The modules are
small and compact to minimize impact on the sys-
tem design. More than one servo drive can be con-
nected to the clamp module with the potential to
handle an entire multi-axis sytem.
920-0024A