Yaskawa
eLearning
The Technical Training Department of Yaskawa America incorporated
presents
The Features and Benefits of the Z1000U.
Hi I'm Steve Koehler.
The Z1000U is the world's first commercially acceptable
HVAC matrix drive designed for building automation applications such as fans,
pumps, and cooling towers, up to and including 350 horsepower.
The Z1000U combines excellent harmonic mitigation and energy saving
capabilities
that go beyond those general-purpose drives.
It is ideal for HVAC applications that require extremely low
current harmonic distortion, energy savings, and serviceability.
in a space saving design.
Now, because the Z1000U effortlessly meets IEEE 519 guidelines
it can be installed in locations where harmonics must be kept below five percent
total demand distortion, or TDD,
such as hospitals or commercial buildings.
The Z1000U provides high efficiency with a simple design
thanks to Yaskawa's engineering breakthrough called
Matrix Technology.
This is the world's first low voltage
HVAC Matrix drive.
Unlike typical harmonic mitigation techniques the Yaskawa Matrix drive
is a direct
AC to AC drive.
Direct AC means there are no DC bus capacitors
which have a limited life span and may require maintenance.
There is also no input diode bridge which is common cause of current
harmonic distortion on the supply source.
The Matrix drive breaks free from some of the most fundamental components found in
a traditional AC drive.
Pushing expectations! The Z1000U provides
excellent variable speed and voltage control for both induction
and permanent magnet motors
The Matrix drive achieves high efficiency through use of a
innovative yet simple design.
Nine bi-directional switches are controlled by pulse width modulation
or PWM
with variable multi-level control
Power can flow in both directions through the switches meaning the unit
is fully regenerative.
For example,
when trying to slow down the motor speed quickly
or correct the direction of a motor that is already spinning,
a windmill effect can cause traditional drives to trip out
on various faults due to excessive DC bus voltage
and or higher starting current.
The Z1000U eliminates those faults and actually
applies that previously wasted energy back to the supply.
This makes the Z1000U perfect for catching freewheeling motors
regardless of the direction.
The Matrix drive directly converts the three-phase AC input
to the variable AC output required for precise control
of voltage and frequency to the motor.
The Matrix drive is different from general purpose inverters
because Z1000Us do not need
additional external hardware,
including filtering and multi pulse configurations used to prevent harmonics.
There is no DC link circuit with diodes
and electrolytic capacitors.
This results in a greatly simplified design.
Three wires in and three wires out.
The key benefits of Matrix technology are low harmonics,
high-efficiency,
and serviceability.
The input diodes on a VFD result
in nonlinear current consumption on the connected power supply.
By eliminating this input diode bridge
the input current waveform become sinusoidal
with the connected power supply.
This mitigates current harmonics and in turn
eliminates voltage distortion sent back to the power grid.
The result is less heat in the utility transformer,
decreased line losses,
and less stress on generators.
All due to the Matrix drive's state-of-the-art design.
Matrix technology is highly efficient because of the direct conversion
of three-phase AC input power to the AC power required
for precise control of the voltage and frequency output to the motor.
Alternate methods involved two switching stages,
one to convert AC to DC
and a second to convert DC back to AC.
This is called indirect power conversion.
Each switching stage introduces losses into the system.
The Yaskawa Matrix drive uses a single switching stage to efficiently convert power.
Matrix technology offers significant energy savings
by returning the motors regenerative energy to the power supply
without having to connect any special device.
Energy use is minimized with no waste across DB resistors or large magnetic
such as transformers and reactors.
The Z1000U can instantly display the power usage and money saved
with a series of customized monitors.
Another significant benefit of the Z1000U
is its compact size relative to today's commonly accepted package solutions.
Because you don't need external devices such as filters
reactors and multi pulse configurations
to mitigate harmonics you can construct your system even when there's limited
space available.
Well let's take a second to review
What makes the Matrix drive different from a traditional drive?
Well the matrix drive utilizes 9 bi-directional switches to achieve direct
AC to AC power conversion
Well let's talk about some of the key
product features.
The Z1000U is available for two voltage classes.
In a 240-volt class power range, models are available from twenty-eight amps
up to two hundred and forty eight amps.
In 480-volt class power range, models are available from eleven amps
up to four hundred and fourteen amps.
Higher capacities will be available in the near future.
Each model is identified by its model number.
So let's take a look at this model number and understand what it means
CIMR is standard to every Yaskawa motor control device
including drives, regenerative units, and active front-ends.
The Z represents the Z1000 product line,
which is used for commercial HVAC applications.
"U" indicates that the model is the USA specification
"2" denotes the voltage class is 208 to 240 volts.
A "4" here would represent an input range of 380 to 480 volts.
The next designator determines the units spec.
The letter "E" indicates a Z1000 Matrix drive that has
the standard built-in EMC filter.
The four digit number indicates the output current rating
of the model, in this case 28 amps.
This will be key when we discuss unit selection.
At the end of the model number the first is the enclosure type:
The letter "A" means open chassis.
Next is the environmental spec. "U" is the standard spec for all Z1000Us,
which means the unit has conformal coating
This provides protection against moisture, dust, chemicals, and
extreme temperatures.
And the last "A" means this is revision A.
Well let's test your memory a bit.
What voltage classes are available for the Z1000U?
That's right! There are two. There is both a 240-volt class
and 480-volt class
Well next we'd like to talk about some of the hardware features.
Because current harmonic characteristics are less than five percent TDD,
the Z1000U meets IEEE-519 guidelines,
making it ideal for hospitals
and commercial buildings.
In fact, the Z1000U exceeds the expectations of IEEE-519
by maintaining low THD through the typical operating ranges
of HVAC applications.
Remember, the Z1000U has an integrated
EMC filter to prevent radio interference
The filter is built to the 61800-3
Category 2 specification as laid out by the IEC.
It meets all pertinent FCC standards as well.
The Z1000U has a keypad with a programmable real time clock.
This clock can be used to set start and stop sequencing timers.
For example, the Z1000U can be programmed to run
Monday through Friday from 6 a.m. to 6 p.m.
while building is occupied.
With the real time clock, fault log events can be stamped with date and time.
Making troubleshooting easier.
A wide array of programmable inputs and outputs are available
for even the most demanding applications.
The Z1000U has eight fully programmable multi-function digital inputs.
The Z1000U also includes two user-programmable analog outputs,
which can be set up to output either 0 to 10 volts DC
or 4 to 20 milliamps.
The outputs are perfect for providing real time feedback to a building
automation system
about drive conditions, such as output speed
and motor current.
Built into the Z1000U is a power supply rated at 24 volts DC
and able to supply up to 150 milliamps of current.
This is typically more than enough for any customer use for powering
transducers and transmitters,
eliminating the need for an external third-party power source.
The removable terminal card automatically backs up
all of your program settings, making drive replacement simple
and keeping down time low.
Certifications for the Z1000U package include
ROHS, UL, CSA, and CE.
The Z1000U has a short circuit current interruption rating of 100k RMS.
Built-in 100K AIC semiconductor fuses
provide the highest level a branch circuit protection.
Well it's time for another set of review questions.
How many digital inputs are available on the Z1000U?
That's right! There are eight fully programmable digital inputs available.
Next, what type of fusing is built into the Z1000U?
The Z1000U has built-in 100k AIC semiconductor fuses.
Well done!
Well our next topic is going to be software features.
The Z1000U has built in serial communication protocols
including BACnet, Metasys N2, Siemens Apogee FLN
and Modbus/Memobus.
Serial communication options available with an option card include
LonWorks and Ethernet/IP.
The Z1000U can achieve a 0.98
input power factor during rated operation.
This is a 21 percent increase over a standard drive.
The Z1000U offers 120 percent
overload for 60 seconds.
Motor auto-tuning can be used to tune the Matrix drive
to the connected motor specifications,
resulting in the highest performance possible
while maintaining maximum efficiency.
The Z1000U also has an ECO mode.
When running an application near 100 percent speed
the Z1000U will activate ECO mode
to achieve near across the line total harmonic distortion.
In turn, this will result in low audible motor noise
and lower current.
The Z1000U will work for a wide variety of applications
as the output frequency to the motor can be varied from 0 Herz
up to 400 Hertz
Well before we move on, do you remember what motor drive enters
when running near line frequency?
That's right! The answer is ECO mode.
Well done!
Let's talk about some of the
physical features of the drive.
The all-in-one package of the Z1000U
eliminates the need for external reactors and filters.
Now to give you a better idea of the smaller package size
and low harmonic advantages the Z1000U,
here's a comparison showing a previous configuration
which includes external harmonic countermeasure components
such as an external regenerative drive,
input AC reactors,
harmonic filter reactors,
and capacitors.
These components are not necessary with the Z1000U.
The Z1000U has a 65 percent size reduction compared to this configuration.
Wiring is reduced seventy percent
from 20 wires down to six.
That's just three in and three out.
Eliminating external devices also eliminates the necessary wiring
and space required for those devices, simplifying the enclosure design,
installation, and maintenance.
Weight is reduced by eighty-one percent.
And power consumption is reduced by nineteen percent.
All while maintaining that all-important IEEE-519 guideline.
Open chassis IP00 enclosure standard.
And enclosed wall-mounted NEMA type 1 kits
are an option.
Bypass and configured packages are also available.
These are offered in type 1 and 3R.
Now with all this sizing talk do you remember
how many wires are necessary for your main power
and motor connections?
That's right! There are only six, three in
and three out that is is seventy percent
reduction from the traditional low harmonic packages
Well our next order
of business is sizing and applications.
Sizing the appropriate Z1000U is easy.
It's just like sizing a standard drive.
All Z1000Us feature output amp ratings
that match NEC horsepower ratings.
Simply match the voltage and current
rating of the motor to the matrix drive.
For example, at 480 volts NEC rates 50 horsepower
at sixty-five amps
and the 50 horsepower 480 volt Z1000U
carries an output current rating of sixty-five amps.
Consistent throughout the Z1000U ratings is the fact
that input amps of the Z1000U also match the NEC ratings,
which will assure installers that input and output wiring gauges
will be consistent.
Applications include HVAC,
Air Handlers,
Compressors,
Pumps,
Chillers,
and Cooling Towers.
And since the Z1000U is specifically designed for HVAC applications,
there are a number a parameter presets that can be used to make start-up
faster and easier to meet specific application needs.
These programming macros are all organized
logically into groups.
Select special functions from a multitude of possibilities
to perfectly match your machines requirements.
Programming can be done through the full text multi-lingual
LCD keypad.
This keypad also has
built-in memory making it possible to back up your parameter settings.
Programming,
monitoring,
and parameter back-up
can also be accomplished using Yaskawa's
free DriveWizard HVAC support tool.
And now we have one last question for you.
What information do you need to size the Z1000U appropriately?
and the final answer is
sizing is easy it's the same as all of Yaskawa's 1000 series drives.
You need to know the applied voltage along with the full load amps
off of the motor name plate.
Yaskawa's commitment
to quality sets the industry standard.
And the Z1000U is no exception.
It has a high reliability with a mean time between failure rate
of twenty-eight years.
Performance life monitors monitor the drive components
providing keypad alerts that prompt preventive maintenance measures.
As mentioned before, there are also power monitors available.
These will display electrical power consumed as well as electrical power
produced
from regeneration
Your current power rate can also be programmed into the Z1000U.
This power rate is applied to the monitors to display how much money
is being saved in real time
The Z1000U
the world's first low voltage matrix drive
to directly convert input AC voltage
to output AC voltage.
Ideal for HVAC applications that require
extremely low harmonic distortion,
energy savings, and serviceability in a space-saving design
A high standard of product excellence,
high mean time between failures,
low cost of ownership,
quick response free technical support 24/7,
and a great return on your investment.
You get it all from the world's leading motion and drive specialist
Yaskawa America.
Well!
We've come to the end of this program but it definitely isn't the end of our
commitment to make Yaskawa drives and motion products the best
in the industry.
The commitment to quality continues in the way we work with our customers
and with our vendors.
Its in the way we train our associates
It means we deliver product on time,
we answer questions quickly and we never say we can't.
Yaskawa quality is reflected in the effort our associates bring to work
every day.
To us
quality means doing everything we can
to make our customers,
partners,
and employee's experience
a great one.
We commit to that!
We make it happen!
We can
because to us
It's Personal!