WEG CFW300 V1.3X, Programming Manual

Page: 62 / 157

Available Motor Control Types
8-2 | CFW300
8
P397 - Control Configuration
Adjustable
Range:
0000h to 000Fh
Factory
Setting:
000Bh
Properties: cfg
Description:
The bits of parameter P397, as shown in Table 8.1 on page 8-2 , enable a series of internal options to configure
the control of the induction motor, such as:
„
Slip Compensation during the Regeneration (Bit 0)
The regeneration is an operating mode of the inverter which occurs when the power flux goes from the motor
to the inverter. The bit 0 of P397 (set in 0) allows the slip compensation to be turned off in this situation. This
option is particularly useful when the compensation during the motor deceleration is necessary.
„
Output Current Stabilization (Bit 2)
High-performance motors with power above 5 HP are marginally stable when driven by frequency inverters
and at operation with no load. Therefore, in this situation a resonance may occur in the output current which
may reach the overcurrent level F070. Bit 2 of P397 (set to 1) activates an algorithm for regulation of the
output current in closed loop which neutralizes the oscillations of resonant output current.
„
Reduction of P297 at high temperature (Bit 3)
Bit 3 of P397 controls the overtemperature protection action according to section Section 14.2 IGBTS
OVERLOAD PROTECTION (F051 AND A050) on page 14-3 .
NOTE!
Both the function related to P219 and the function controlled by P397 (bit 3) act by reducing the
switching frequency. As the function related to P219 is intended to improve the reading of the inverter
current, that function has priority of action over the function controlled by P397 (bit 3).
ATTENTION!
The default setting of P397 meets most application needs of the inverter.
Therefore, avoid modifying its content without knowing the related consequences. If you are not
sure, contact WEG Technical Assistance before changing P397.
Table 8.1: Options available to configure the control (P397)
P397
Bit 3
Reduction of P297 in
A050
Bit 2
Output Current
Stabilization
Bit 1
Reserved
Bit 0
Slip Compensation
During Regeneration
0000h Disabled Disabled - Disabled
0001h Disabled Disabled - Enabled
0002h Disabled Disabled - Disabled
0003h Disabled Disabled - Enabled
0004h Disabled Enabled - Disabled
0005h Disabled Enabled - Enabled
0006h Disabled Enabled - Disabled
0007h Disabled Enabled - Enabled
0008h Enabled Disabled - Disabled
0009h Enabled Disabled - Enabled
000Ah Enabled Disabled - Disabled
000Bh Enabled Disabled - Enabled
000Ch Enabled Enabled - Disabled
000Dh Enabled Enabled - Enabled
000Eh Enabled Enabled - Disabled
000Fh Enabled Enabled - Enabled