NX Variable Frequency Drives
Perfect match for HVAC
Field Devices
All you need in HVAC Control
Where are variable frequency drives used?
• Buildings:
- Primarily commercial
• Applications:
- Air handling
- District Heating
- Room & Zone
• Operation:
- Control fans, pumps,
compressors to reduce
energy consumption
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Where are variable frequency drives used?
• Heating, Ventilation and Air Conditioning (HVAC) system
Chiller
Cooling tower
Ventilation fan
Boiler/heating pump
Cooling coil
Need for AC Drive!
3
Heating coil
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What is a variable frequency drive?
• Also known as: Frequency Converter (FC), Variable Speed
Drive (VSD), AC Drive, Inverter etc.
A squirrel cage motor is
the typically used
electrical motor in
industry and public
engineering sector
Stepless control
for the speed of a
squirrel cage
motor
Smooth and
Accurate control
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Improved control over
the system
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Cost reductions through
Energy savings and
improved quality
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Why use variable frequency drives?
• Saves energy through fan and pump speed control
- up to 70% energy savings in pump and fan applications
 e.g. 32% average savings in a ventilation system → Payback period of
1 year
• Decreases mechanical stress due to pressure spikes
with direct on-line start & stop
- VFDs creates a smooth start which reduces the pressure spikes
that reduce system lifetime
• Reduces the starting current of the motor
- VFDs minimize the starting current of the motor, which means
electrical installation investments can be lower
Save energy, increase system lifetime, save on investments
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Why use variable frequency drives?
Power P %
100
Valve
80
60
40
20
Speed Control
0
0
20
40
60
80
100
Flow Q %
Saves energy through fan & pump speed control
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Why use variable frequency drives?
• Energy savings & payback period on investment in VFDs
Savings
90 %
81%
Payback time: 1.5
years
Source: ZVEI (Zentralverband Elektrotechnik- und Eletronikindustrie e.V.)
80 %
70 %
44%
60 %
35%
50 %
Payback time:
2 years
Payback time: 0.5
40 %
year
32%
Payback time:
1 year
30 %
20 %
10 %
0%
Lift
Waste water pump
Bottling station
Ventilation system
average 32% energy savings & 1 year payback
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Why use variable frequency drives?
Pressure spikes in long pipes with direct on-line start & stop
Pressure
in pipe
Direct on-line
Start
Switch-Off
Time
Repeated pressure spikes reduces the lifetime of a system
Reduced mech. Stress increased system lifetime
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Why use variable frequency drives?
• Reduced starting current
800
700
% Line Current
600
500
AC Drive
Soft Starter
400
Star - Delta
Direct On Line
300
200
100
0
0
10
20
30
40
50
Hz
Lower electrical installation investments
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What does Honeywell offer in VFDs?
Honeywell NXL
Compact drives
0.25 - 1.5 kW
0.37 – 3 kW
208 – 240 V
380 – 500 V
Honeywell NXL
HVAC drives
0.75 - 30 kW
380 – 500 V
Honeywell NXS
Multipurpose drives
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0.55 - 90 kW
0.75 - 400 kW
2.2 - 560 kW
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208 – 240 V
380 – 500 V
525 – 690 V
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What’s special about Honeywell VFDs?
• Honeywell VFD Highlights (all platforms)
- Compact and robust design
- Easy commissioning and use
- Low audible noise from the motor
- High class functionality
- High flexibility to fulfill any need
- High starting torque & dynamics
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What’s special about Honeywell VFDs?
• Compact & robust design
Super cooling principlebased channel totally
separated from electronics
Easily replaceable,
temperature
controlled cooling fan
Separate control unit
Removable
display panel
Integrated Ac
choke as standard
Easily configurable versatile
I/O to meet all requirements
Easy to access power terminals
Under the protective plate
Patented strip solution for proper
360 controls grounding
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High voltage separated
from control electronics
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Integrated EMC filters as standard
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What’s special about Honeywell VFDs?
DANFOSS
195,3 L
542 %
ABB
IP54
45/55 kW
124 KG
I-level
93,9 L
260 %
IP54
45/55 kW
50 KG
I-level
35.9 L
100 %
Bookcase design
937
591
715
IP54
45/55 kW
35 KG
H-level
257
237
ACS 601
429
306
VLT 5060
421
495
Honeywell is the Most Compact in the Market!
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What’s special about Honeywell VFDs?
• Features
- Start Up Wizard
 The complete product range can be programmed
with the help of start-up wizard
- Panel – Remove operation
NEW
 The complete product range have easy change
of the control place function
 Usefull function when commissioning HVAC
applications.
 All product behave in similar way
• Benefits:
- Easy commissioning
- Simple to use
Press
LEFT ARROW for 3 s to
change control place
Honeywell - the easiest to use and commission
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What’s special about Honeywell VFDs?
• Features:
- High Switching Frequency
 Refers to frequency of the IGBT switches in
operation
 Higher frequency less noise from the motor
 Best solution without de-rating
• Honeywell offers 6kHz (NXL) and 10 kHz (NXS)
compared to 4kHz (Danfoss)
- Temperature-controlled fans
 Fan stops operating when not needed
• Benefits:
- Lowest Audible Motor Noise
- Reduced Noise caused by the VFD itself
- Optimized energy consumption of the drive
Highest Switching Frequency = Lowest Noise
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What’s special about Honeywell VFDs?
• Features:
- Easy- installable credit-card size option boards
 Wide selection of control inputs and outputs
• Analog I/Os, relays, digital inputs, thermistor inputs
 Wide selection of field buses
• Benefits:
- Flexible & upgradeable in the field
•Modbus RTU
•Ethernet TCPIP
•Metasys N2
•Profibus DP
•LonWorks
•CANopen
•DeviceNet
•BACnet
Honeywell VFDs – flexibility to meet any need
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What’s special about Honeywell VFDs?
• Features:
- High starting torque & dynamics
 Sophisticated open loop vector control
• Automatic torque boost function
• Motor auto identification function in entire product family
• Benefits:
- Excellent performance
 Highly accurate motor control
 Increased reliability
 Smooth start even for high inertia fans
- Best flying start in market
 Best solution for clean room air handling
High performance through excellent motor control
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What’s special about Honeywell VFDs?
• Honeywell VFD PC Tools
- NCload: for easy software downloading
 Uses standard RS232 communication port for
downloading
 Items that can be downloaded:
• System software
• Application software
• Software for option cards
• Language package
Application loading view
 Activates required application
Language pack view
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What’s special about Honeywell VFDs?
• NCdrive- for easy commissioning
- Parameter handling for all NX products
 Online or Offline Parameter editing
 Parameter set comparison
 Save or print parameters, graphs, drive
information, fault history
- Commissioning & maintenance
Parameter window
 Graphical window for online drive signal
monitoring
 Control the drive from the tool:
Control window
• Start, stop, change direction, reference, fault reset,
coast stop
 Read active faults & fault history
- Service Info Function
 Saves all drive information including hardware &
software configuration
Monitoring window
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Tell me the technical aspects of NXL compact…
• NXL Compact Series
 0,37 – 1,5KW (208 – 240V 1~/3~)
 0,55 – 2,2KW (380 – 500V 3~)
 IP20 enclosure class
 EMC
• N – Level: no emission class
• H – Level: comm. standard
(external filters available)
 Accessories
• 1 plug-in for I/0 expanders or field busses
• RS232 adapter (for PC connection)
• Display panel door installation set
• PC tools
NXL Compact is a high featured Micro Drive
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What’s special about NXL compact series?
• Easy Installation:
- Flexible installation options
(back or side, screw or DIN rail)
- Start-up Wizard
• Best Features:
- Fully programmable I/O, auto-identification, PID
controller, flying start) → very high functionality
and flexibility against any micro range product
- Options:
 I/Os, field busses, display panels
 RFI filters
 AC chokes
• Low Audible Noise
NXL Compact is a high featured Micro Drive
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Tell me the technical aspects of NXL HVAC…
• NXL HVAC Series
 0,75 – 30 KW (380 – 500V 3~)
 IP21, IP54 enclosure classes
 EMC
• H – Level: comm. standard
• C – Level: comm. special (hospitals, airports)
 Accessories
• 2 plug-ins for I/O expanders or field busses
• RS232 adapter (for PC connection)
• Display panel door installation set
• PC tools
NXL HVAC is a dedicated solution for HVAC
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What’s special about NXL HVAC series?
• Easy Installation & Set-up:
- Quick Installation Guide
- 30 second start-up wizard
• Extremely low motor noise
- High switching frequency
• High starting torque & dynamics
- Sophisticated open loop vector control &
effective design
• Suitable for all HVAC applications
- Fans, Pumps, Compressors
NXL: Perfect for HVAC Applications up to 30kW
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What’s special about NXL HVAC series?
• Feature:
- Quick Installation Guide
 Includes 1-page instructions for
installation & set-up
 Attached to product
• Benefits:
- Quick & Easy Installation
 Most important info available at a glance
 Instructions aren’t thrown out with
product packaging
NXL HVAC: Easiest to Install
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What’s special about NXL HVAC series?
• Feature:
- 30 second start-up wizard
• Benefits:
- Quick & Easy Installation
 VFD programming in just 4 easy steps:
• Activate the Start-up Wizard
• Select the mode (fan or pump)
• Tune the motor nominal speed
• Tune the motor nominal current
NXL HVAC: Fastest to Set-Up
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Tell me the technical aspects of NXS multipurpose…
• NXS Multipurpose Series
 For open loop applications such as conveyors, mixers,
pumps, and fans
 0,37- 90 kW (208-240V ), 0,75 - 400 kW (380-500V),
2,2 - 560 kW (525-690V)
 IP21, IP54 (up to 250 kW) enclosure classes
 EMC
• C – Level: comm. special (optional up to 30KW units)
• H – Level: comm. standard (standard up to 160KW units)
• L – Level: industrial (standard from 200KW +)
 Accessories
• 5 plug-ins for I/0 expanders and field busses
• Display panel door installation set, through-hole mounting kits
• Keypad for Chinese & Cyrillic letters
• PC tools
NXS is flexible & configurable to meet any need
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What’s special about NXS multipurpose series?
• Easy Installation:
- Start-up wizard
- Alpha-numeric display panel, memory and
back-up functions
• Flexibility
- Variety of option boards & slots
- Wide Power and Voltage range
- Alpha-numeric display panel, memory and
back-up functions
- 7 predefined application software to ensure
suitability to any application
- Several special application software available
NXS is flexible & configurable to meet any need
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What’s special about NXS multipurpose series?
• Features:
- Hardware-coded option boards & slots
- 5 option board slots with 20 different boards
to select
- Isolated thermistor input as standard
• Benefits:
- Real flexibility to fulfill any need from the
application
NXS is flexible & configurable to meet any need
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When to choose NXS over NSL?
• Why choose NXS multipurpose over NXL HVAC?
- applications over 30kW (up to 400kW)
- alphanumeric display with memory
 More comprehensive start-up wizard
 PID with real units (bar, psi, etc.)
 Parameter copy & back-up
 Special panel for Cyrillic & Chinese letters
 Multi-monitor view (3 values simultaneously)
- 10 kHz switching frequency without de-rating (up to 30kW)
- wider selection of special application software
 Water Solutions Package: Multi-master Pump Cascade Controller, Sewage
Tank Level Controller
 Extra PID Controller i.e. NXS controlling an actuator
- More I/O options: 5 option board slots instead of just 1 or 2
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How do Honeywell NXL VFDs compare?
Honeywell
Product
Easy
Installation
Compact size
(*
Switching
frequency
NXL HVAC
VLT 6000
Quick guide
Start-up Wiz. No
IP21 small
IP20 +41%
IP54 smallest IP54 +266%
6 kHz
IP21: Integr.
normal
EMC filtering
IP54: Integr.
special (full)
Thermistor
Input
Danfoss
4.5 kHz
Normal and
special (not
full) options.
External from
11 kW
Yes (isolated) No
Danfoss
VLT HVAC
FC100
ABB
Siemens
No
IP21 +25%
IP55 +120%
ACH 550
Start-up
Wizard only
IP21 +25%
IP54 +121%
SED2
No
IP20 -5% IP54
+218%
5 kHz
4 kHz
4 kHz
Intergr.
solution for
normal
available
Intergr.
solution for
normal
available
IP20 External
filters. IP54
integr. special
(not full)
Yes (nonisolated)
Yes (nonisolated)
Yes (nonisolated)
(* average difference 1,1 - 30 kW units footprint size
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How do Honeywell NXS VFDs compare?
Honeywell
Danfoss
Danfoss
ABB
Siemens
Product
NXS
VLT 6000
Easy
Start-up
Installation
Wizard
No
Compact size IP21 small
IP20 +41%
(*
IP54 smallest IP54 +266%
Switching
frequency
10 kHz
4.5 kHz
Intergr.normal Normal and
in all. Special special (not
full) options.
EMC filtering as integr.
option (up to External from
30kW)
11 kW
Thermistor
Input
Yes (isolated) No
VLT HVAC
FC100
No
IP21 +25%
IP55 +120%
ACH 550
Start-up
Wizard
IP21 +25%
IP54 +121%
SED2
No
IP20 -5% IP54
+218%
5 kHz
4 kHz
4 kHz
Intergr.
solution for
normal
available
Intergr.
solution for
normal
available
IP20 External
filters. IP54
integr. special
(not full)
Yes (nonisolated)
Yes (nonisolated)
Yes (nonisolated)
(* avg. diff. 1,1 - 30 kW units footprint size
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