Tech Briefs Magazine - August 2021 - MD-15

Back to Basics: Improving Your Drives Investment
There are two types of drive configurations
on the market today: centralized
and decentralized. A centralized drive is
characterized by a customer using an
electrical enclosure and mounting the
drives and power distribution hardware
within that enclosure. Then, the customer
runs cable lead lengths from the
enclosure to the line or field devices
being controlled.
In the decentralized approach, the
drive is placed on the machine or as -
sembly line; this is applicable to a variety
of products currently available. The
main benefit of having a decentralized
drive is that heat is removed from the
electrical enclosure and there can be a
considerable cost savings in machine or
line build time as a result.
The basic modular drive consists of a
power module (PM), control unit, and
an operator panel (OP). The power
module supplies voltage to the motor,
the control unit monitors the power
module and is the brains of the drive,
and the operator panel is the user interface
for the drive and motor control.
OEMs can prewire the drives before
panel builders mount the equipment. As
a result, time-to-market is greatly re -
duced. The PM saves space as a result of
having the same frame size with or without
an integrated filter. Integrated energy
recovery enables excess energy to be
regenerated to the line supply, which
eliminates the need for braking resistors.
Side-by-side mounting saves space
in the control cabinet and reduces costs
without de-rating.
Regenerative power modules on the
drive can help take the excess energy
and apply it back to the grid or even redirect
it into the plant to power other
equipment. While regen power has been
a viable concept for decades, it can today
be applied to a much lower power range
of motors, plus the use of the concept
with variable-speed drives means the
applications broaden considerably, from
the simple on/off pump or motor to a
high-performance hydraulic injection
molding machine, lift table, stamping
press, mining conveyor line, and many
types of process equipment that fluctuate
greatly in their running power demands.
The OP features simple setup and
configuration using wizards with integrated
plain text help functions. In addition,
the OP includes quick access to all
parameters and displays fault codes without
scrolling. Simple, individualized,
local drive operations and visualizations
are often provided. If a user receives a
fault, the fault number appears on the
user interface. The fault will provide a
user with a description and reason for
the fault as well as a remedy appearing
in the Smart Access Module (SAM) as a
Wi-Fi hotspot and a Web interface built
into the module. This SAM is ideal for
configuring drives within a mobile
device or laptop.

Motion Design, August 2021
Free Info at http://info.hotims.com/79416-706
Cov
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15
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Tech Briefs Magazine - August 2021

Table of Contents for the Digital Edition of Tech Briefs Magazine - August 2021

Tech Briefs Magazine - August 2021 - Intro
Tech Briefs Magazine - August 2021 - Sponsor
Tech Briefs Magazine - August 2021 - Cov1
Tech Briefs Magazine - August 2021 - Cov2
Tech Briefs Magazine - August 2021 - 1
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Tech Briefs Magazine - August 2021 - Cov3
Tech Briefs Magazine - August 2021 - Cov4
Tech Briefs Magazine - August 2021 - MD-Cov1
Tech Briefs Magazine - August 2021 - MD-Cov2
Tech Briefs Magazine - August 2021 - MD-1
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Tech Briefs Magazine - August 2021 - MD-4
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Tech Briefs Magazine - August 2021 - MD-Cov3
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