Nidec LEROY-SOMER Powerdrive FX, Commissioning Manual

Page: 153 / 176

153
ADVANCED PARAMETER-SETTING MODE
Commissioning manual Powerdrive MD2/FX
4617 en - 2017.09 / e
18.24
: Regen current trip
Adjustment range: 0 to 102
Format: 8 bits
Contains the code for the current trip. See the list of trips for
parameters 10.20 to 10.29 . Value 0 indicates that the drive
has not tripped. The other values indicate the trip number.
18.25 : High stability modulation
Adjustment range: Disabled or Enabled
Factory setting: Enabled
Format: 8 bits
Disabled (0) : A standard pulse width modulation is applied to
the active rectifier.
Enabled (1): Pulse width modulation optimised to minimise
the active rectifier losses.
18.26 : Regen rated current
Adjustment range: 0.00 to 2.2 x 11.32
Factory setting: 0.00 A
Format: 32 bits
Regen drive rated current value. See section 5.6.3 according
to the drive rating ( 18.26 is equivalent to 05.07 ).
The 18.19 current limit depends on 18.26 .
18.27 : Regen switching frequency
Adjustment range: 2 kHz (0) to 18 kHz (19)
Factory setting: 5 kHz (6) for the MD2
Format: 8 bits
Sets the PWM switching frequency.
18.27
Frequency
18.27
Frequency
0 2 kHz 10 7 kHz
1 2.5 kHz 11 8 kHz
2 3 kHz
12 9 kHz
3 3.5 kHz 13 10 kHz
4 4 kHz 14 11 kHz
5 4.5 kHz 15 12 kHz
6 5 kHz
16 13 kHz
7 5.5 kHz 17 14 kHz
8 6 kHz 18 16 kHz
9 6.5 kHz 19 18 kHz
Note:
For frequencies higher than 6 kHz, please consult LEROY-
SOMER.
For the POWERDRIVE FX , the switching frequency must be >
4 kHz (4).
CAUTION:
A high switching frequency reduces the magnetic noise,
however it increases the motor temperature rise and the
level of radio-frequency interference emission, and
reduces the starting torque.
Refer to the installation manual to determine the drive
derating according to the frequency.
18.28 : Regen regulation mode selector
Adjustment range: Voltage (0) or Current (1)
Factory setting: Voltage (0)
Format: 8 bits
Sets the control mode of the Regen drive.
Voltage (0):
In this mode, the drive sets the voltage at the DC bus terminals
to the reference specified in 18.05 .
Current (1):
In this mode, the drive is controlled by the current value defined
in 18.11 : This enables, for example, two Regen inverters to
operate simultaneously; a master sets the voltage at the
common DC bus terminals and a slave shares the current
reference with the master.
18.29
: Active reference current
Adjustment range: ± 300.0%
Format: 16 bits
This parameter indicates the current reference for the drive in
Regen mode, coming from the DC voltage regulation when
18.28 is in voltage regulation mode or from the current offset
18.11 when 18.28 is in current control mode. It is expressed
as a percentage of the Regen rated current 18.26 . Output via
analog channel or serial link assigned to the current reference
of another Regen, it can be used to operate two rectifiers in
tandem, the master controlling the DC bus voltage, and the
slave controlling the current reference 18.29 .
CAUTION:
This tandem operation requires the rectifiers to be
connected in a specific manner. Please consult your usual
interlocutor.
18.30 : Regenerating I limit enable
Adjustment rang: Disabled (0) or Enabled (1)
Factory setting: Disabled (0):
Format: 8 bits
This parameter is used to define whether or not the Regenerating
current limit 18.31 is used.
18.31 : Regenerating I limit
Adjustment range: 0.0 to 300.0%
Factory setting: 150,0%
Format: 16 bits
If 18.30 = Enabled (1) this parameter is used to set the
maximum permanent current limit permitted when returning
power (from the DC bus to the mains). In this case, parameter
18.19 becomes the absorption limit (from the mains to the DC
bus).
If 18.30 = Disabled (0), 18.31 has no effect.