Without Losses - WEG CFW-09 User Manual

[Factory Setting]
Parameter
P150 (1)
DC Link Voltage
Regulation Mode
This parameter
is shown on the
display(s) only when
P202 = 3 or 4
(Vector Control)
P151 (6) 339 to 400 (P296 = 0)
DC Link Voltage
Regulation Level
For V/F Control
(P202 = 0,1, 2 or 5) 585 to 800 (P296 = 1)
616 to 800 (P296 = 2)
678 to 800 (P296 = 3)
Range
Unit Description / Notes
Output Voltage
100 %
P142
P143
P144
0 to 2
[ 1 ]
0 = With losses
-
(Optimal Braking)

1 = Without losses

2 = Enable/Disable
via DIx
P151 sets the DC Link Voltage Regulation Level to prevent E01-
[ 400 ]
overvoltage. This Parameter jointly with the Parameter P152 allows two
1 V
operation modes for the DC Link Voltage Regulation. Please find below
a description of the two operation modes.
DC Link Voltage Regulation type when P152 = 0.00 and P151 is
[ 800 ]
different from the maximum value: ramp Holding – When the DC
1 V
Link Voltage reaches the Regulation Level during the deceleration, the
deceleration ramp time is increased and the speed is maintained at a
constant value till the DC Link Voltage leaves the actuation. Refer to
[ 800 ]
figure 6.12.
1 V
This DC Link Voltage Regulation (ramp holding) tries to avoid the inverter
disabling through fault relating to DC Link Overvoltage(E01), when the
[ 800 ] deceleration of loads with high inertia is carried out, or deceleration with
1 V short times are performed.
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
0.1 Hz 3 Hz P146
Figure 6.11 - Adjustable V/F curve V/F
P150
Optimal braking is active as described in P151 for vector
control. This gives the shortest possible deceleration time
without using dynamic braking or regeneration.
Automatic deceleration ramp control. Optimal braking is not
active. The deceleration ramp is automatically adjusted to
keep the DC link voltage below the level set in P151. This
avoids E01 DC link overvoltage tripping. Can also be used
with eccentric loads.
DIx = 24 V: The Braking acts as described for 150 = 0;
DIx = 0 V: The Without Losses braking becomes inactive.
The DC link voltage will be controlled by parameter
P153 (Dynamic Braking).
Table 6.7 - DC Link voltage regulation mode
P202 = 2
Speed/
Frequency
P134
P145
Action
133