Honeywell NXS0003V35A2H1 Product Data page 12

Nxs series
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NXS VARIABLE FREQUENCY DRIVES
• VFD and motor control features
Features
Best in performance
Flying start
Automatic torque boost
function
Motor auto identification
High Switching
Frequency
Prohibit frequency
Temperature-controlled
fans
• HVAC control features
Features
Inbuilt PID controllers
Sleep Mode
Fire override mode
PFC (Pump and Fan
Cascade) -Controller
• Special application software
Features
Multimaster PFC
EN0B-0620GE51 R1107
Functions
Ability to get an already spinning fan under
speed control
Boosts initial voltage to start high inertia fans
Performs measurements to find out motor
internal variables such as stator resistance.
Honeywell NXS has higher switching
frequency than the most of the competition as
standard (= no derating required)
Overriding the critical frequencies to avoid
resonance
Fan stops operating when not needed
Functions
• Normal and Inverse Regulation
• Delta P regulation with 2 standard pressure
transmitters
• Volume flow control
• Less wiring since sensor normally close to
inverter
Shutting down the motor, when no demand
Keeps fan/pump running in case of fire
Controls total pumping system with several
parallel pumps by equally sharing the load
Functions
• The best available fully controlled pump
cascade VFD system in the market
• System with a VFD for each pump
• Only 2 wires needed for the connection
between inverters – no additional hardware
• Full control over the total pumping system
• Equal usage of each pump
Fully redundant system
• Important in clean room
production to ensure the
standard conditions
• Avoids tripping and enables
smooth starts also to high
inertia loads
• Increases reliability
• Less audible noise from the
motor
Elimination of resonance
• Less audible noise from VFD
itself
• Increase of energy savings
• Cost savings
• Faster response in process
closed loop
• Saves energy
• Legal requirement
• Longer lifetime of the system
• Lower investment cost for
pumping system
• Longer lifetime of the system
• Increased reliability
• Increased energy savings
with optimized usage of
pumps
Fully independent pump
control system can be
created for pumping stations
12
Benefits
Benefits
Benefits

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