|
Models
LC-UPC-E-120V LC-UPC-E-230V
The
New UPC-E (Universal” Power Cell Ethernet) manufactured by Load Controls
Inc (USA) has been designed specifically for precision process monitoring
& control in particular where inverter or variable frequency drives
are fitted. The Universal
Power Cell, now with Ethernet communications,
is designed to cope with the most difficult of
motor load sensing tasks when other power sensors and motor load controls
are unable to function reliably.
The
Universal Power Cell (UPC-E) offers
a new approach to remotely monitoring pumps and process machine motors by
using the benefits of Ethernet communications. A large city in the USA is
at this time evaluating this exciting concept and is considering the new
UPC-E for monitoring pumps, city-wide, over the internet.
The
UPC-E has a built in web server. You type in an address like 192.168.123.2
. This is an IP address which identifies the sensor on a network.
You will then arrive at its HOME PAGE and have links within its
"site" to make scaling adjustments, setup UDP (machine
code) outputs through a "PORT" to a specific machine or to all
machines that listen on that port.
The
versatility of the Universal Power Cell combined with Ethernet Control and
Communication Embedded Web Server allows viewing with your browser to
change settings on the fly during a machine or process cycle. Within your
browser, you can set full scale horsepower/kilowatts to match the motor,
set response time to average the load for a smooth signal, choose how
often to receive data or respond to UDP or HTTP requests.
The
system uses TCP/IP and UDP Protocol with 10 Base T 10 Megabit Ethernet
Connection. In addition the sensor has a 0-10 Volt DC Analogue Output,
which can feed to a local monitoring display or to assist with
troubleshooting. How the packets are formed is the software part of the
specification. In the UPC-E’s case it's TCP/IP. Every computer or device
must go to a port but you cannot just parallel connect wires together.
The
UPC-E Universal Power Cell is a Motor Load Sensor that monitors power (HP
or KW). It works on both Fixed and Variable Frequency Power and has an
Ethernet Connection and an Analogue Output.
It also works on single phase, DC, and brushless DC. The
UPC-E Universal Power Cell, just as the standard UPC, has Three Balanced
Hall Effect Sensors, each with a flux concentrator. Each phase passes
through a window. A voltage sample for each phase is also taken.
The
Hall Effect Semiconductor does a vector multiplication of the current flow
and voltage, which also calculates the power factor. The output is
proportional to power (HP or KW). In some cases, the average power signal
may be more useful than instantaneous power. The Response Adjustment slows
the response of the Universal Power Cell. Adjustment is made with the
Ethernet Connection.
The
control of many process machines such as grinders, mills, mixers, rollers,
pumps, compressors, conveyers etc may be improved dramatically by sensing
true power instead of current. The Universal Power Cell is a unique
product that now makes this possible under all operating conditions. The
UPC accurately measures true electrical power drawn on the input to any
industrial electric motor and performs exceptionally well in applications
on the “output” of variable frequency or inverter drives.
Wave
shape is likely to be poor in these circumstances or power factors may be
very low (down to 0.1), but is no problem for the Universal Power Cell.
Conventional CT (current transformer) based power sensors are not
suitable for such conditions and will, if used, produce gross power errors
(and thus load errors) due to limitations in bandwidth and
sensitivity.
The
UPC is truly “Universal and is unique, and is suitable for any 3 phase,
single phase AC or DC motors all in one model. The UPC also DOES NOT use
CT’s (current transformers) or external VT’s (voltage transformers)
and its full scale range may be adjusted by the user to accommodate any
motor size up to 120KW. One model does it all!
There
are many suitable industrial applications but the product is particularly
suited to mixer “process endpoint detection” where by measuring the
power drawn by stirrer or paddle drives, the Universal Power Cell is
sensitive enough to detect minute viscosity changes on machines ranging
from laboratory sizes to large production machines.
Power changes may be used to indicate the start or end of a cycle,
viscosity end-point or overload.
Applications
include mixture viscosity, tool condition, optimum feed rate, pump or fan
flow, beginning or end of processes, detecting obstructions &
overloads or loss of load (prime).
The
product may be used in a large number of industries, in fact anywhere that
electric motors are used such as the food industry, chemical, gas, oil,
water treatment, building industries, machine tools and many more.
Installation
is simple with no hassle, since you don't need to wrestle with external
voltage and current transformers. This
also saves considerably on installation costs.
A
range of accessories is available including both analogue and digital
power displays and trip units. A
panel mounted power and energy meter (KWH-2) is also available for use in
processes such as the mixing of rubber, dough and clay which all respond
to energy control.
|