User's Manual Part 2

T ECHNICAL D OCUMENTATION P ROTECTING P EOPLE AND A SSETS
®
D
ATE
:
27
M
ARCH
2017
|
V
ERSION
:
1.8
40
R
ANGER
®
-
X5
R
ADAR
S
YSTEM
(M
OBILE
)
F
UNCTIONAL
O
VERVIEW AND
T
HEORY OF
O
PERATION
EEC
®
|
C
OMPANY
P
ROPRIETARY
2.1.3.3. Regeneration Clamp (Unit 2 A1 A2 A5)
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 common name for this process is
“regeneration” and happens when the load on the unit drives the DC motor. During regeneration,
the DC motor can produce enough voltage to 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, it can destroy or severely
damage the amplifier.
The servo amplifier and controller are the types that channel the increasing voltage back to the
input power supply. A simple capacitor isn’t large enough to handle the power that generates
back into the controller when the system is under inertial load. The Regeneration Clamp is us
sufficient capacity to track the input power and ensure the servo amplifier voltage will not exceed
the capacity rating.
Figure 29. Regeneration Clamp (1000-327)