Frequency Input Fi; 13-Bit Speed" Reference; Control Word And Inverter Status - WEG CFW300 V1.3X Programming Manual

Output frequency
DIx - Accelerate
DIx - Decelerate
DIx - Run/Stop

7.2.5 Frequency Input FI

The behaviors of the analog input and frequency input are described in details in
on page 12-9. Thus, after the proper signal treatment, it is applied to the ramp input according to the selection of
the reference described in
on page 7-1.

7.2.6 "13-Bit Speed" Reference

The 13-bit Frequency Reference is a scale based on the motor rated speed (P402) or on the motor rated frequency
(P403). In the CFW300, parameter P403 is taken as the base to determine the frequency reference.
Thus, the 13-bit frequency value has a range of 16 bits with signal, that is, -32768 to 32767; however, the rated
frequency in P403 is equivalent to the value 8192. Therefore, the maximum value in the range 32767 is equivalent
to four times P403.
The 13-bit frequency reference is used in parameters P681 and P683, which are related to the interfaces with
communication (Serial/USB, CANopen, DeviceNet and Profibus DP) of the product.

7.3 CONTROL WORD AND INVERTER STATUS

The inverter control word is the grouping of a set of bits to determine the commands received by the inverter from
an external source. On the other hand, the status word is another set of bits that define the inverter status. This
way, the control and status words establish an interface for the exchanging of information between the inverter
and an external module, such as a communication network or a controller.
DIx - Accelerate
DIx - Decelerate
&
Enabling (RUN)
P133
Active
Reset
Active
Inactive
Figure 7.4: Operating graph of the E.P. function
Section 7.1 SELECTION FOR LOGICAL COMMAND AND FREQUENCY REFERENCE
Logical Command and Speed Reference
Reference
Ramp
Reset
Inactive
Active
Inactive
Section 12.4 FREQUENCY INPUT
Time
Time
Time
Time
CFW300 | 7-11
7