NX Series Variable Frequency Drives The Drive For All Applications For HVAC Applications Large And Small, Honeywell NX Series Drives Are The Answer. From simple HVAC applications to closed- For OEM Customers loop process control applications, the Honeywell NX Series is the right Variable For the OEM customer, the modular con- Frequency Drive (VFD) for all scenarios. struction and wide selection of option cards make the NX Series a drive that can be easily You can depend on an NX Series drive to incorporated into almost any application. The control anything from simple fans, pumps, versatile programming tool enables easy and and compressors to elevators, cranes, or seamless integration into your existing control winders. NXS models offer the greatest appli- strategy, and the onboard intelligence means cation versatility for multiple control applica- the drive can replace the local controller. tions. NXL models meet simple application needs in the low-horsepower range. For System Designers Together, these versatile performers feature modular, easily adaptable hardware, precise semiconductor technology and a flexible, preinstalled application package that supports a fieldbus system. That makes NX Series drives the single best solution for a wide range of HVAC and industrial applications. The flexible I/O configuration and the dynamic performance of the NX Series make it ideal for a wide range of system applications, including drives used in HVAC and industrial markets. The NX Series can be configured to operate with several different fieldbuses, making it easy to communicate with a variety of control systems. The powerful control unit can be used for local control tasks, freeing the control system For Distributors/Contractors for general control tasks and minimizing the For the distributor or contractor, the NX Series total number of controllers necessary for a offers a range of new application capabilities compete automation solution. that help keep stock to a minimum and speed installation. Since the NX is a functional replacement for its predecessor, the CX Series, existing drawings, installation and training material can be easily adapted. In addition, a wide selection of option cards offers new possibilities for reconfiguring the drive to future requirements. The wide voltage range, high overload capacity, and a userfriendly alphanumeric display on the control panel make choosing and opening the correct drive very easy. Control Unit The control unit features a control panel for setting parameters and controlling the function of the drive, along with an enhanced microprocessor and Application Specific Integrated Circuitry (ASIC). The display provides information including actual current, power and voltage, and can also be used for starting and stopping the drive. If necessary, the display can be mounted directly on the enclosure door. The control unit provides five slots for various I/O cards. A wide selection of cards is available, ranging from cards with simple analog and digital inputs to smart fieldbus cards. (See your Honeywell NX Series Quick Selection Guide for a complete list of The Modular Design option cards and features.) Flexibility rules with cards All drives up to 40 hp are equipped with a built-in that are interchangeable between both the NXS and brake chopper. An external brake resistor can be the NXL. While the control unit is usually powered installed as an option. The resistor is designed for a from the power unit, it also can be powered from an two-second full torque rapid stop once every minute. external 24VDC supply, maintaining critical access to the stored data programming even if the main supply is disconnected. Enclosure Class The standard enclosure class for NXS drives is Power Unit NEMA1 (IP21). Models are also available in NEMA12 The power unit is available in 200-240 and 380-500 panel-mount-only device. three-phase AC input voltage ranges. It includes all power circuit components necessary to operate the drive, and is connected to the control unit with a multipole connector. (IP54). NXL drives are shipped as an open chassis Drives And The Electrical Environment Most drive installations require ad- Eliminating the Problem ditional equipment such as controllers and sensors. This equipment is often The magnitude of the harmonic cur- installed in close proximity to the drive, rents decreases as their frequency creating the potential for interference. increases. Focusing on the lower frequencies can control or limit these There are two main types of effects. interference: • Low frequency — harmonic Additional line impedance in the • High frequency — electro-mechani- form of an AC choke is an extremely cal Interference effective way to reduce or, in some NXS drives are specifically designed cases, eliminate the problem. Drives against susceptibility to Radio Frequen- without input line chokes generate cy Interference (RFI). significantly higher levels of harmonics. The choke has the added effect of protecting the drive against spikes Harmonic Currents in their power supply. All NXS drives have built-in AC chokes. Non-linear loads — like rectifier bridges in power electronics, switch-mode power supplies in office equipment, and fluorescent lamps — draw cur- High-Frequency Interference rents that are not sinusoidal and can generate harmonics. The additional High-frequency interference con- harmonic current does not carry power, sists of either radiated or conducted though it is an added current flowing disturbances at frequencies above in the cables. If the harmonics are not 9 kHz. These disturbances can be taken out of the system, problems such created by switching elements in as overloaded conductors, decreased any device (e.g., the crystal clocks power factor and disturbance of in a computer, switch-mode power measuring systems can plague the supplies, and the output devices in electrical system in a building. The drives). The high frequency noise voltages created by the harmonics emitted from any device may create may also damage other equipment or problems in measuring and commu- interfere with power line communica- nication systems, and may interfere tion equipment. with radio receivers. NXS Drives come standard with industrial-quality RFI filters, immunizing them from the effects of interference. 3~ RFI 3~ The NX Series have a built-in AC choke. The choke reduces the harmonic currents and protects the rectifier against voltage spikes in the supply (compared to a DC choke which provides no spike protection). The RFI filter is standard on the NXS and optional on the NXL model. Features Of The Drive: Broad Application, Simple Startup, Long Life NX Series features include: Years of experience are behind the design and manufac- • Integrated AC choke for maximum protection and ture of these reliable, robust drives. minimum harmonics • Integral RFI filter for residential and light commercial as well industrial The NX Series extends the CX Series’ reputation for reliability, with the same high level of resistance to electromagnetic • Factory tested at maximum temperature and load interference. The NXS and NXL control units incorporate the • Flexibility in communication with multiple fieldbus same application packages, control panels, I/O cards and options: LONWORKS®, N2/Modbus®, DeviceNet, BACnet® and ProfiBus • Highly flexible I/O configuration • Multi-application software package pre-installed • Versatile PC tools for loading, adjusting and comparing parameters • Slim, space-saving “bookshelf” design for side-by-side installation can connect to the same PC tools package. Easy programming and commissioning simplify start-up. The NX default control I/O includes the most common control inputs and outputs. For maximum compatibility, the wiring terminals of the NX Series match the previous CX Series settings. Setting parameters is easy too, using either the control panel or the PC tools for the NX. • Continuous self-supervising runtime and alarm system enhances reliability and safety • Control logic can be powered from an external An optimal solution is available for most application needs. The modular design allows the choice of only the needed auxiliary supply, maintaining power to the control functions and features for specific applications. A wide panel, internal drive functions and fieldbuses while selection of option cards offers new possibilities for future the power module is down reconfigurations. • Configurations and applications can be transferred between drives • Multilingual control display Graphical Tools Parameter window Adjust and compare and save parameters A number of Windows®-based PC programs are available for working with the NX Series. NCDrive NCDrive is a full-featured commissioning and control application for the NX Series. It provides the following functions: • Parameter adjust, compare and save • Trending for up to six signals • Fault finding/trouble shooting NC- Drive requires a PC equipped with a Pentium II processor, 32 MB free RAM, 10 MB free disk space and Windows 95/98, 2000 or XP NCLoad NCLoad is a tool for loading software into the drive, including: • System software (the operating system) • Application software Monitor window Up to eight user-selectable variables can be monitored simultaneously The NX Series can be easily adapted to a variety of needs using the factory-installed application package. Applications The basic application is set The standard application The local/remote application The multi-step speed control as factory default. The I/O features the same control is an ideal choice for opera- application allows selecting signals are fixed, not pro- signal logic as the basic tion with two active control the reference between sev- grammable. A single group application plus the ability sources. The source of the eral fixed speeds. Nine pro- of 18 parameters is avail- to freely program all digital frequency reference can be grammable speeds include able. The frequency refer- inputs and outputs. Eight freely programmed, allowing basic, seven multi-step, and ence can be provided either parameter groups are avail- maximum control flexibility. jogging. The speed is select- as a current signal, a voltage able, including basic, input The active control source is ed by a digital input signal. signal, or directly from the signal, output and supervi- selected with a digital input. The basic speed reference control panel. This is the sion, drive control, frequen- All outputs are programma- can be provided either as most popular application. cy, motor control, protection ble, and, like the standard a current or as a voltage and auto-restart parameters. application, eight parameter signal. groups are standard. All inputs and outputs are programmable, and the eight parameter groups are standard. All applications can support a fieldbus system without any additional software. Typical HVAC applications include pumps, fans and compressors. Industrial applications include conveyors, winders, cranes, hoists and elevators. Choose the right application for your needs from the guide below. The NXS is specifically designed for open-loop control applications (e.g. fans, pumps, and compressors). The PID control application features The multi-purpose control appli- The pump and fan control with two I/O terminal control sources. cation incorporates a frequency autochange application can be Source A is the PID controller and reference that can be obtained used for controlling one variable- source B is a direct frequency refer- with an analog input, or from the speed drive and a total of four ence. The PID controller reference joystick control, a potentiometer, auxiliary drives. can be supplied via an analog input, or a mathematical function of the from a potentiometer or the panel. analog inputs. A variety of multi- The PI regulator controls the rate step and jogging speeds can of the variable speed drive and The actual value can be obtained be programmed. All outputs are provides start and stop signals to from an analog input or from a programmable, and eight param- the auxiliary drives. All outputs are mathematical function of the analog eter groups are provided. With its freely programmable. inputs. Typical PID control applica- extensive range of parameters, this tions include those where one vari- is the most versatile and flexible of A parameter group for multi-pump able must be kept constant (such all the applications. and fan control functions is avail- as pressure in water supply line) able in addition to the eight stan- despite changes in the load. All out- dard parameter groups. puts are programmable, and eight parameter groups are standard. Advanced Features NXS And NXL NXS Applications The standard NXS drive is typically supplied with the following pre-engineered applications: • Basic • Standard • Local/Remote Control • Multi-step Speed Control • PID Control • Multi-purpose Control • Pump and Fan Control with Automatic Changeover Several customized, special-purpose applications are also available for pumps, elevators, cranes, winders and more. All NXS applications are similar to the CX configurations. NXL The NXL is a slim, compact and easy-to-use VFD for User-Friendly Features: NXS and NXL Models the 1/2–3 hp power range. The installation is flexible • Simple to operate and easy using the mounting components shipped • Smart preset parameters: In most cases, enter the with the unit. Choose traditional back installation or DINrail, suitable for very limited space. motor ratings and the NX does the rest • Simple quick-connect control terminals cut installa- tion and commissioning time The latest control technology, coupled with real-time electrical measurement, is at the core of the NXL • Wide variety of I/O cards for different applications ensure compatibility fieldbus control using RS485 (Modbus®), and PID • RS232C port for connection to PC control and enhanced special features such as a • Comprehensive manuals available in English, sleep function, are standard. All common fieldbus cards and I/O expander cards available for the NX range of products can be used in the NXL. Spanish and French • Multilingual control panel, similar operation for all power ratings Sensorless vector control technology is at the core of the NXS, along with an adaptive motor model and a sophisticated ASIC. The motor flux model is based on the measurement of all three output phase currents and the voltage level obtained by the ASIC. The model automatically identifies motor parameters for both the sensorless vector mode and the U/f mode, keeping track of changes in the parameters over time. The vector control is carried out in a system of stator flux coordinates, which is resistant to small variations in measurements and motor parameters. No demanding or complicated calculations are required. The ASIC also supervises the internal buses and some external functions, freeing the processor for other tasks. Vector Control Without Feedback The vector calculations are carried out every millisecond, based on the instantaneous values of the phase currents and their phase angles. The motor voltage is measured by the ASIC, preventing errors in measurements. The motor model uses those values to calculate the torque and flux. Integrators that can cause drift problems due to inaccuracies in parameters, measurements or changes in motor values are excluded. Combine that with the incorporation of the converter and motor cable, and you have the most accurate and most precise motor control device in the industry. Advanced Motor Control NXS Learn More For more information about Honeywell Variable Frequency Drives, call 1-800-466-3993 or visit customer.honeywell.com. LonWorks® and the LonWorks® Logo are registered trademarks of Echelon Corporation. Modbus® is a registered trademark of Gould Inc. BACnet® is a registered trademark of American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). Automation and Control Solutions In the U.S.: Honeywell 1985 Douglas Drive North Golden Valley, MN 55422-3992 In Canada: Honeywell Limited 35 Dynamic Drive Toronto, Ontario M1V 4Z9 In Latin America: Honeywell 9315 N.W. 112th Avenue Miami, FL 33178 www.honeywell.com 63-9119 October 2005 © 2005 Honeywell International Inc.
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