Nidec LEROY-SOMER Powerdrive FX, Commissioning Manual

Page: 75 / 176

75
ADVANCED PARAMETER-SETTING MODE
Commissioning manual Powerdrive MD2/FX
4617 en - 2017.09 / e
05.37 : Variable inductance parameter set
Adjustment range: Yes (1)/No (0)
Factory setting: No (0)
Format: 8 bits
Yes (1): Reserved for machines with a cogging rate (Lq/Ld
ratio at the nominal point) is higher than 25%. See parameters
05.72 to 05.88 .
No (0): Only the Ld and Lq values entered in 05.24 and 05.51
are taken into account by the motor control. Reserved for
machines with a cogging rate lower than 25%.
05.38 to 05.49 : Not used
05.50 : Motor ventilation
Adjustment range: Not cooled (0), Self cooled (1)
Forced cooling (2)
Factory setting : Self cooled (1)
Format: 8 bits
Not cooled (0):
The motor has neither an internal fan nor a forced ventilation
unit.
Self cooled (1):
The motor has a fan on the shaft.
Forced cooling (2):
The motor has a forced ventilation unit.
The value of parameter
05.50 combined with the values of
parameters 04.15 (Motor thermal time constant), 05.07
(Motor rated current), 05.08 (Motor rated speed ) and 11.31
(User drive mode) is used to estimate the machine thermal use
percentage indicated in 04.19 (%).
05.51 : Q axis inductance (synchronous motor)
Adjustment range : 40 to 999% of 05.24
Factory setting : 100%
Format: 16 bits
Used to set an inductance value in quadrature with the pole
axis for synchronous motors with projecting poles.
05.52 : Starting current (synchronous motor)
Adjustment range : ± 300% of 05.07
Factory setting : 20%
Format: 16 bits
With a synchronous motor ( 11.31 = Servo (3)), this parameter is
used to improve starting for permanent magnet motors controlled
without a position sensor.
With an asynchronous motor ( 11.31 = Closed Loop vector),
this parameter is used to boost the magnetising current on
machine starting for quicker flux installation.
05.53 : Flux establishment time
Adjustment range : 0.00 to 320.00 s
Factory setting : 0.25 s
Format: 16 bits
With a synchronous motor ( 11.31 = Servo (3)) without a sensor,
this parameter defines the «parking» time before motor rotation.
With an asynchronous motor, after a run command, the flux is
deemed to have been installed if 05.53 has elapsed or if 7/8 of
the machine flux is obtained.
05.54 : Base Freq./nominal Freq. ratio
Adjustment range : 75 to 150%
Factory setting : 100%
Format: 16 bits
This parameter is used to adjust the level of flux in the induction
motor.
The diagram below shows the influence of 05.54 on the
change in the motor no-load voltage characteristic as a function
of the speed of rotation.
05.55 : Motor overcurrent threshold
Adjustment range : 0 to 999%
Factory setting : 160%
Format: 16 bits
Synchronous motors:
This threshold (% of 05.07 ) defines the detection level for the
«Motor overcurrent» trip. If this threshold expressed in A is
higher than 1.6 x 11.32 , the «Overcurrent at drive output» trip
will then override the «Motor overcurrent» trip.
Asynchronous motors: No effect.
05.56 : Not used
05.57
: Actual switching frequency
Adjustment range : 2 kHz to 18 kHz
Format: 8 bits
Displays the switching frequency actually used. Related
parameters: 05.18 , 05.60 and 18.27 .
05.58 : Two PWM update per period
Adjustment range : No (0) or Yes (1)
Factory setting : Yes (1)
Format: 8 bits
No (0):
The frequency for calculating the motor control is the same as
that displayed by 05.57
.
Yes (1):
The frequency for calculating the motor control is double that
displayed by 05.57 . This option allows more precise motor
control. It is not available when the user has chosen a switching
frequency 05.18 higher than 8 kHz
.
05.09
05.54
> 100%
05.54
05.06
= 100%
05.54
< 100%
Motor voltage
Motor
speed