General Information; About The Manual; Terms And Definitions Used In The Manual - WEG CFW11W G2 Series User Manual

2 GENERAL INFORMATION

2.1 ABOUT THE MANUAL

This manual contains information for the proper installation and start-up in the V/f (scalar) control mode, the main
technical data and how to troubleshoot the most usual problems of the CFW11W G2 inverters.
It is also possible to operate the CFW11W G2 in the V V W, Vector Sensorless Vector and Vector with Encoder
control modes. For further details about the start-up and other control modes, refer to the programming manual.
For information on other functions, accessories and operating conditions, refer to the following manuals:
Programming manual with detailed description of the parameters and advanced functions of the CFW11 inverter.
„
Manual of the interface modules for incremental encoder.
„
Manual of the I/O expansion modules.
„
RS-232/RS-485 serial communication manual.
„
CANopen slave communication manual.
„
Anybus-CC communication manual.
„
Those manuals are available on WEG website - www.weg.net.

2.2 TERMS AND DEFINITIONS USED IN THE MANUAL

Normal Duty (ND): operating duty of the inverter that defines the maximum current values for continuous operation
I and overload of 110 % for one minute. It is selected by programming P0298 (Application) = 0 (Normal Duty
nom-ND
(ND)). It should be used to drive motors which are not subject, in the application, to high torques in relation to its
rated torque, when operating in steady state, at the start, at the acceleration or deceleration.
I : inverter rated current for operation under normal duty (ND). Overload: 1.1 x I
nom-ND
Heavy Duty (HD): operating duty of the inverter that defines the maximum current values for continuous operation
I and overload of 150 % for one minute. It is selected by programming P0298 (Application) = 1 (Heavy Duty
nom-HD
(HD)). It should be used to drive motors which are subject, in the application, to high overload torques in relation
to its rated torque, when operating at constant speed, at the start, at the acceleration or at the deceleration.
I : inverter rated current for operation under heavy duty (HD). Overload: 1.5 x I
nom-HD
Current Imbalance (%):
Unbalance at power unit X - phase Y =
+ ... + I
I + I
Y1 Y2 YN
I =
YAVG
N
Where:
N = number of the power units.
I = current of phase Y (U, V or W) of the power unit N (P0815 to P0829).
YN
I = average current of phase Y.
YAVG
Rectifier: input circuit of the inverters which converts the AC input voltage into DC. Composed of thyristors or
power diodes.
I - I
YX YAVG
.100
I
YAVG
General Information
/ 1 minute.
nom-ND
/ 1 minute.
nom-HD
CFW-11W G2 | 2-1
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