English
GENERAL INFORMATION
diodes.
rms:
Root mean square, effective value.
rpm:
revolutions per minute.
s:
second.
STO:
Safe Torque Off. When the STO function is enabled, the inverter ensures that it will not generate torque on
the motor shaft.
SS1-t:
Safety Stop 1. When the SS1-t function is enabled, the inverter starts decelerating the motor and enables
the STO function after a specified time.
TBD:
value to be defined.
USB:
Universal Serial Bus; is a serial bus standard that allows devices to be connected using the ”Plug and Play”
concept.
V:
volts.
Varistor:
metal oxide varistor.
Ω:
ohms.
µ
:
micro (
10
−
6
)
2.3 ABOUT THE CFW900
The CFW900 frequency inverter is a high-performance product that allows speed and torque control of low-voltage
three-phase motors. The main features of this product are the on-board technology, which allows the flexible
solution of different types of application, and its connectivity. To this end, it has the following functionalities:
Vector control (Sensorless and Encoder) for induction motors, scalar control (V/F or VVW) for induction motors
and VVW scalar control for permanent magnet (PM) motors.
Built-in Ethernet and RS485 communication interfaces. Other communication interfaces available via accessories.
Advanced Energy Saving Function that reduces motor losses and improves the system performance.
Thermal Management Function that acts on the inverter to protect the equipment integrity and functionality.
Specific PWM Modulation function for use with Long Cables at the inverter output to the motor.
DC Braking function to optimize the inverter stop. It can also be used as a motor warm-up function in specific
cases.
Dynamic Braking function and vector control Optimal Braking. Optimal Braking enables the controlled braking of
the motor, eliminating the braking resistor in some applications.
Flying Start function that allows driving a motor on the fly, accelerating it from the speed at which it is running.
Ride-Through function that allows recovering the inverter, without undervoltage locking, when a power failure
occurs for a brief time.
Oriented start-up (Assistant) function groups and allows the definition of the main parameters for the inverter
operation.
Self-Tuning function (Assistant) for the vector control allows the automatic setting of the regulators and control
parameters,from the identification (also automatic) of the motor and load parameters.
By navigating the CFW900 HMI, it is possible to set the parameters through the navigation groups: Status,
Diagnostics and Configurations.
From these three groups, you can access the product identification,
measurements (voltages,
currents,
temperatures etc.),
protection and alarm diagnostics (active
protection/present, time control etc.) and inverter configurations (power supply, motor data, control used,
commands and references etc.).
CFW900 | 5
Summary of Contents for CFW900
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