WEG CFW-09 - Without Losses

133
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
Range
[Factory Setting]
Parameter
Unit
Description / Notes
P150
(1)
0 to 2
DC Link Voltage
[ 1 ]
Regulation Mode
-
P150
0 = With losses
(Optimal Braking)
1 = Without losses
2 = Enable/Disable
via DIx
Action
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 WithoutLosses braking becomes inactive.
The DC link voltage will be controlled by parameter
P153 (Dynamic Braking).
This parameter
is shown on the
display
(s)
onlywhen
P202 = 3 or 4
(VectorControl)
Table 6.7 -
DC Link voltage regulation mode
P151
(6)
339 to 400 (P296 = 0)
DC Link Voltage
[ 400 ]
Regulation Level
1 V
For V/F Control
(P202 = 0,1, 2 or 5)
585 to 800 (P296 = 1)
[ 800 ]
1 V
616 to 800 (P296 = 2)
[ 800 ]
1 V
678 to 800 (P296 = 3)
[ 800 ]
1 V
P151 sets the DC Link Voltage Regulation Level to prevent E01-
overvoltage. This Parameter jointlywiththe Parameter P152 allows two
operation modes for the DC Link Voltage Regulation. Please findbelow
a description of the two operation modes.
DC Link Voltage Regulation type when P152 = 0.00 and P151 is
different from the maximum value:
ramp Holding – When the DC
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
figure 6.12.
This DC Link Voltage Regulation (rampholding) triestoavoid the inverter
disabling through fault relating to DC Link Overvoltage(E01), when the
deceleration of loads with highinertia is carried out, or decelerationwith
short times are performed.
100 %
P142
P143
P144
0.1 Hz
3 Hz
P146
P145
Figure 6.11
- Adjustable V/F curve V/F
Output Voltage
Speed/
Frequency
P134
P202= 2