Installation manual

Configuration Mode (ConF)
S1A28692 03/2010 107
Parameters described in this page can be accessed by:
nrd [Noise reduction]
[No] (nO)
nO
YES
Random frequency modulation helps to prevent any resonance, which may occur at a fixed frequency.
[No] (nO): Fixed frequency
[Yes] (YES): Frequency with random modulation
bOA [Boost activation]
[Dynamic] (dYnA)
nO
dYnA
StAt
[Inactive] (nO): No boost
[Dynamic] (dYnA): Dynamic boost
[Static] (StAt): Static boost
bOO [Boost]
-100 to 100% 0%
g
This parameter can be accessed if [Boost activation] (bOA) is not set to [No] (nO).
Adjustment of the motor magnetizing current at low speed, as a % of the rated magnetizing current. This parameter is used to
increase or reduce the time taken to establish the torque. It allows gradual adjustment up to the frequency set by
[Action Boost] (FAb). Negative values apply particularly to tapered rotor motors.
FAb [Action Boost]
0 to 599 Hz 0 Hz
g
This parameter can be accessed if [Boost activation] (bOA) is not set to [No] (nO).
Frequency above which the magnetizing current is no longer affected by [Boost] (bOO).
SUL [Motor surge limit.]
[No] (nO)
nO
YES
This function limits motor overvoltages and is useful in the following applications:
- NEMA motors
- Japanese motors
- Spindle motors
- Rewound motors
This parameter can remain set to [No] (nO) for 230/400 V motors used at 230 V, or if the length of cable between the drive and
the motor does not exceed:
- 4 m with unshielded cables
- 10 m with shielded cables
Note: When [Motor surge limit.] (SUL) is set to [Yes](YES), the maximum switching frequency [Switching freq.] (SFr)
is modified, see page 107
.
[No] (nO): Function inactive
[Yes] (YES): Function active
SOP [Volt surge limit. opt]
10 μs
g
Optimization parameter for transient overvoltages at the motor terminals. This parameter can be accessed if [Motor surge limit.]
(SUL) is set to [Yes] (YES).
6
8
10
Set to 6, 8 or 10 μs, according to the following table.
Note: This parameter is useful for ATV32pppN4 drives.
Code Name / Description Adjustment range Factory setting
0
Rated magnetizing current
Positive [Boost] (bOO)
Negative [Boost] (bOO)
[Action Boost] (FAb)
Magnetizing current
Frequency
g
These parameters only appear if the corresponding function has been selected in another menu. When the parameters can
also be accessed and adjusted from within the configuration menu for the corresponding function, their description is detailed
in these menus, on the pages indicated, to aid programming.
T
Parameter that can be modified during operation or when stopped.
DRI- > CONF > FULL > DRC-
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