Honeywell Automation and Control Solutions
Guide Specification for Variable Frequency Drives
PART 1GENERAL
1.01DESCRIPTION
A.This section is to cover a complete Variable Frequency Drive (VFD) consisting of a pulse width modulated (PWM) inverter.
1.02Quality Assurance
A.References
1.Institute of Electrical and Electronic Engineers (IEEE)
a.IEEE 519-1992, “Recommended Practices and Requirements for Harmonic Control in Electric Power Systems”
2.National Electrical Manufacturers Association:
a.NEMA 250 - Enclosures for Electrical Equipment (1000 Volts Maximum).
b.NEMA FU1 - Low Voltage Cartridge Fuses.
c.NEMA ICS 7 - Industrial Control and Systems: Adjustable Speed Drives.
d.NEMA ICS 7.1 – Safety Standards for Construction and Guide for Selection, Installation, and Operation of Adjustable Speed Drive Systems.
3.Underwriters Laboratories (UL)
a.UL508C
B.Qualifications
1.The VFD shall be provided by a company with a complete line of HVAC controls.
1.03SUBMITTALS
A.Submittals shall include the following information:
1.Product specifications
2.Dimensional information including physical dimensions and mounting information
3.Power wiring connections
4.Control wiring connections
PART 2PRODUCTS
2.01Variable Frequency Drives
A.The VFD shall generate the required variable frequency through three main input voltage lines connected to a coil capacitor LC filter and diode bridge. This shall produce a DC voltage for an insulated gate bi-polar transistor (IGBT) bridge. The IGBT bridge shall produce a pulse-width modulated (PWM) AC voltage for the motor. A microprocessor shall control the motor according to measured signals and control commands set from the VFD control panel. Control commands may be provided by stand-alone sensor input or by output from a DDC building management system.
1.Integral power supply shall be one of the following as required by each motor:
a.200-240 VAC, 3 phase, 45-66 Hz, ± 10%
b.380-500 VAC, 3 phase, 45-66 Hz, ± 10%
c.525-690 VAC, 3 phase, 45-66 Hz, ± 10%
2.The ambient ratings and temperature ranges shall:
a.Operating: 14°F to 104°F (-10°C to 40°C)
b.Storage: -40°F to 140°F (-40°C to 60°C)
c.Humidity range: 5 to 95% RH, non-condensing
B.The Enclosure shall be rated NEMA 1.
C.The VFD shall be RoHS compliant. The VFD will not contain electrolytic capacitors The VFD circuit boards shall be lead-free.
D.All Variable Frequency Drives shall have the following standard features:
1.The VFD shall have Pump and Fan Startup Wizards that can be modified using a personal computer-based commissioning tool with an optional software package, or a field removable control panel. The graphic display shall be removable for separate mounting, a minimum of 45 feet away from the VFD.
2.The VFD shall log and display as a minimum, without adding separate instruments or other equipment, the following:
a.Temperature of the heat sink
b.Motor temperature
c.Output frequency
d.Status of analog and digital inputs and outputs
e.Motor speed in rpm
f.Total kWh consumed
g.Total kWh trip counter
h.Total kWh run counter
i.Total hours run
3.The VFD shall be UL, cUL, and CE approved
4.The VFD shall be provided with built-in RFI filters and all models 3 HP or more shall include an DC Choke
5.The VFD shall have the capability of communicating with over the following protocols:
a.BACnet/MSTP and BACnet/IP
b.LONBus
c.Modbus RTU and Modbus/TCP
d.N2
6.The VFD shall accept a 0-10 Vdc or 4-20 mA signal, as well as six programmable digital inputs.
7.The VFD shall have a real-time clock for timed functions.
8.The VFD shall include a minimum of two programmable output relays, to provide signals such as run, ready or fault. It shall also include one 4-20 mA or 0-20 mA programmable output to provide signals such as motor speed, output frequency, or any other selected information.
9.The VFD shall include a Proportional+Integral+ Derivative (PID) controller as standard to provide closed loop control directly from a signal transmitter without the need for external signal conditioning.
E.The VFD shall have the ability to be place into Panel Control mode. In the panel control mode, the operator shall have the ability to enter a speed reference into the display to control the speed of the motor.
F.The VFD shall have sufficient capacity and provide a quality waveform so as to achieve full output power of the motor without causing excessive additional heat rise.
1.The minimum efficiency of the drive shall be:
a.>96% at 100% load
b.>92% at 20% load
G.The VFD shall comply with the following EMC standards:
1.Immunity: EN50082-1, -2, EN61800-3
2.Emission: EN50081-1,-2, EN61800-3
H.Output frequency range of 0-320 Hz with a resolution of 0.01 Hz
1.It shall be possible to set the switching frequency within the range of 3 kHz to 16 kHz to minimize audible motor noise.
I.A minimum of 8 preset motor speeds shall be available.
J.The VFD shall provide 3 skip frequencies with lower and upper frequency set-points to avoid mechanical resonance.
K.The VFD shall protect itself against:
1.Input transients to VDE0160 class W2
2.Loss of motor phase
3.Grounding of any output phase
4.Loss of speed reference
L.The VFD shall have an input for a motor thermistor to monitor motor temperature. If a motor thermistor is not connected, the VFD shall model the motor temperature in its software. When overheating of the motor is predicted, an alarm or automatic shutdown shall be initiated.
M.The VFD shall provide full electrical isolation between power and control components, including input and output signals.
N.The VFD shall have the following protection functions:
1.Heat sink over-temperature
2.Under-voltage protection
3.Over-voltage protection
4.Over-current protection
5.Earth fault protection
6.VFD fault protection
7.Loss of input/output phase protection
8.Motor stalled protection
9.Motor under-load protection
10.Motor over-temperature protection
11.short circuit protection
12.External fault injection
O.The VFD shall consist of separate modules for the control section, power section, and fan. Each section shall be able to be removed and replaced independent of the other sections.
P.The entire power section must be in a steel enclosure. No other enclosures are acceptable.
Q.The control unit section of the VFD shall have the ability to be powered by an external 24 Vdc power supply to allow access to the stored data and to allow for: commissioning, field bus applications, and checkout prior to connecting the main supply.
R.The VFD control panel shall display at least five run status indicators, including:
1.Run
2.Ready
3.Fault
4.Motor Direction
5.Stop
S.The VFD control panel shall have the ability to monitor at least 9 real-time actual values or parameters.
T.The control panel shall allow the user to lock out parameters by choice of a password or parameter selection.
U.The control panel shall have EEPROM to retain all parameters when the VFD is powered down.
V.The control panel shall show, on a fault condition, the following information:
1.Operation days
2.Operation hours
3.Output frequency
4.Motor current
5.Motor voltage
6.Motor Power
7.Motor Torque
8.DC voltage
9.Unit temperature
10.Run status
W.Software
1.The VFD Manufacturer shall offer the following software, at no additional charge or license fee:
a.VFD commissioning software
b.Updated versions of VFD system software
c.Updated versions of VFD applications software
d.Updated versions of VFD option board software
PART 3EXECUTION
3.01Installation
A.The VFD shall be installed by the mechanical contractor. The contractor shall install the drive in accordance with the recommendations of the VFD manufacturer, as outlined in the installation manual.
B.The VFD power wiring shall be completed by the electrical contractor. The contractor shall complete all power wiring in accordance with the wiring recommendations of the VFD manufacturer, as outlined in the installation manual.
3.02Commissioning
A.Commissioning and startup shall be provided by a technician who has been trained and certified by the VFD manufacturer.
B.The VFD shall be commissioned in accordance with the recommendations of the VFD manufacturer, as outlined in the application manual.
3.03Warranty
A.All VFD components, parts and assemblies shall be guaranteed against defects in materials and workmanship for 36 months.
END OF SECTION
Honeywell Variable Frequency Drive
Specification – December 2009Page 1 of 5