Nidec LEROY-SOMER Powerdrive FX, Commissioning Manual

Page: 67 / 176

67
ADVANCED PARAMETER-SETTING MODE
Commissioning manual Powerdrive MD2/FX
4617 en - 2017.09 / e
04.11 : Torque regulation mode selector
Adjustment range : Speed regulation (0), Direct torque (1),
Controlled torque (2)
Factory setting : Speed regulation (0)
Format: 8 bits
: Speed regulation (0):
Speed control with current limiting by parameter 04.07 .
Direct torque (1): not available in open loop mode.
Controlled torque (2): not available in open loop mode.
: Speed regulation (0):
Speed control with current limiting by parameter 04.07 .
Direct torque (1):
Direct torque control. The motor torque is set to the value of
04.08 ( 04.08 + 04.09 if 04.10 is set to «Yes»).
The motor speed value therefore depends on the resistive
torque of the application.
Controlled torque (2):
Torque control with overspeed protection provided by
parameter 01.06 .
• In torque control mode (
04.11
= 1), if the resistive
torque goes to zero, the drive accelerates the
machine to the maximum speed given by the
minimum value between 1.3 x 01.06 and 01.06 +1000
rpm. It is therefore imperative to ensure that parameter
01.06 , which limits the maximum speed, is set so as to
ensure the safety of equipment and personnel.
04.12 : Current demand filter ( )
Adjustment range : 0 to 10
Factory setting : 2
Format: 8 bits
This filter is used to introduce a time constant aimed at reducing
any noise generated by the speed loop, such that:
time constant = 2
04.12
ms.
04.13 : Current loop proportional gain
Adjustment range : 1 to 999
Factory setting : 50
Format: 16 bits
- With an asynchronous motor: the factory-set value of
04.13
is suitable for most applications.
- With a synchronous motor: to adapt the value of the
proportional gain, apply the following formula:
04.13 = k x kVA x Ld
Where:
k = 1 for 400/460 V drives
k = 0.6 for 690 V drives
kVA = drive rating (eg: value 340 for a 340T drive)
Ld = inductance value indicated on the motor nameplate in mH
04.14 : Current loop integral gain
Adjustment range : 0 to 250
Factory setting : 40
Format: 16 bits
This parameter is used to adjust the current loop bandwidth.
The factory setting of 04.14 is suitable for most applications.
04.15 : Motor thermal time constant
Adjustment range : 1 to 32000 s
Factory setting : 1800 s
Format: 16 bits
Based on the current, torque and speed levels, a relative level
of motor heat and iron losses is estimated. Depending on the
type of machine ventilation given by parameter 05.50 and the
value of the thermal time constant 04.15 , an estimate of the
machine thermal load level (%) is given in 04.19 .
04.16 : Not used
04.17
: Magnetising current
Adjustment range : 0 to + 2.22 x 11.32 (A)
Format: 32 bits
Magnetising current reading.
04.18 : Overriding current limit
Adjustment range : 0 to 300% (% max. active In)
Format: 16 bits
Indication of the transient limit of the drive current. This value
depends on 04.05 , 04.06 , 04.51 and internal limits.
04.19 : Motor thermal state
Adjustment range : 0.0 to 120.0%
Format: 16 bits
This parameter indicates the estimated thermal state of the
motor from the values entered in the menu 5 motor parameters
and parameter 04.15 . An alarm appears on the local display
when 04.19 exceeds 100% (see 10.17 ). 04.19 is reset to 0
on each power-up.
Note: The use of a PTC sensor is therefore strongly
recommended to protect the motor.
04.20
: Percentage load
Adjustment range : ± 11.32 (% active In)
Format: 16 bits
This parameter indicates the drive load level. A positive value
indicates operation in motor mode whereas a negative value
indicates operation in generator mode (driving load).
The maximum value of 04.20 is fixed by 04.24 .