Features

The RC-050 is mounted on a heat sink and has a

50 watt power resistor for more continuous current

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 operating.

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 regeneration

voltages. The diode protects the system from

connecting the power supply in reverse. If the clamp

circuit were to fail the diode will continue to protect

the power supply from over-voltage.

Description

As with most servo systems a clamp circuit is required 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 voltage 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 products. With this

module one or more servo drives can be protected from

“Over Voltage” conditions by placing the clamp module between

the power supply and the drive. The clamp tracks the

input power supply and will operate from 24 to 80 volts. No

adjustments 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. External power resistors can be added for

even greater continuous power requirements. The modules

are small and compact to minimize impact on the system

design. More than one servo drive can be connected to the

clamp module with the potential to handle an entire multiaxis

sytem.