General Information; About The Manual; Terms And Definitions Used In The Manual - WEG CFW-11 Series User Manual

GENERAL INFORMATION

2.1 ABOUT THE MANUAL

This manual exposes how to install, to start-up in V/f (scalar)
mode, the main characteristics and shows how to troubleshoot
the most common problems of the CFW-11 inverter series frame
sizes F and G models.
It is also possible to operate the CFW-11 in VVW, Sensorless Vector and Vector with Encoder modes. For more
details on the start-up in the other control modes, refer to the Programming Manual.
For information on other functions, accessories and operation conditions, consult the following manuals:
Programming Manual, with a detailed description of the CFW-11 parameters and advanced functions.
Incremental Encoder Interface Module Manual.
I/O Expansion Module Manual.
RS-232/RS-485 Serial Communication Manual.
CANopen Slave Communication Manual.
Anybus-CC Communication Manual.
These manuals are included on the CD supplied with the inverter or can be downloaded from the WEG
website at - www.weg.net.

2.2 TERMS AND DEFINITIONS USED IN THE MANUAL

Normal Duty Cycle (ND): The duty cycle that defines the steady state current value I
of 110 % during 1 minute. It is selected by programming P0298 (Application) = 0 (Normal Duty – ND). It must
be used for driving motors that are not subject in that application to high torques with respect to their rated
torque, when operating at constant speed, during start, acceleration or deceleration.
I : Inverter rated current for use with normal duty cycle (ND = Normal Duty).
nom-ND
Overload: 1.1 x I
nom-ND
Heavy Duty Cycle (HD): The duty cycle that defines the steady state current value I
150 % during 1 minute. It is selected by programming P0298 (Application) = 1 (Heavy Duty – HD). It must be
used for driving motors that are subject in that application to high torques with respect to their rated torque,
when operating at constant speed, during start, acceleration or deceleration.
I : Inverter rated current for use with heavy duty cycle (HD = Heavy Duty).
nom-HD
Overload: 1.5 x I
nom-HD
Rectifier: The input circuit of the inverters that converts the input AC voltage into DC. It is made of thyristors
and power diodes.
Pre-charge circuit: It charges the DC link capacitors with a limited current, thus avoiding higher current peaks
when powering the inverter.
/ 1 minute.
/ 1 minute.
General Information
and an overload
nom-ND
and an overload of
nom-HD
2-1
2