Nidec LEROY-SOMER Powerdrive FX, Руководство по вводу в эксплуатацию

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ADVANCED PARAMETER-SETTING MODE
Commissioning manual Powerdrive MD2/FX
4617 en - 2017.09 / e
05.13 : Flux optimization select
Adjustment range : Linear (0) or Dynamic (1)
Factory setting : Linear (0)
Format: 8 bits
Linear (0):
The U/F ratio is fixed and set by the base frequency ( 05.06 ).
Dynamic (1):
Dynamic U/F ratio.
Generates a voltage/frequency characteristic which varies
with the load. It is for use in quadratic torque applications
(pumps/fans/compressors). It can be used in constant torque
applications with low dynamics to reduce motor noise.
05.14 : Open loop mode select ( )
Adjustment range:Rs measured each run (0)
Rs not measured (1),
Linear U/F law with boost (2),
Rs measured after each factory setting (3),
Rs measured after each power up (4),
Square U/F law with boost (5)
Factory setting: Rs measured after each power up (4)
Format: 8 bits
Determines the open loop control mode. The «Rs measured
each run (0)», «Rs not measured (1)», «Rs measured after each
factory setting (3)» and «Rs measured after each power up (4)»
modes are used for flux vector control of induction motors.
These 4 modes are distinguished by the method used to identify
the motor parameters, in particular the stator resistance. As
these parameters vary with temperature and are essential for
obtaining optimum performance, the machine cycle must be
taken into account for selecting the most appropriate mode. The
«Linear V TO F (2)» and «Square U/F law with boost (5)» modes
correspond to control by U/F ratio modes for induction motors.
Rs measured each run (0):
The stator resistance 05.17 and voltage offset 05.23 are
measured each time the drive receives a run command.
These measurements are valid only if the machine is stopped,
and totally defluxed. The measurement is not taken when the
run command is given less than 2 seconds after the previous
stop. This is the most effective flux vector control mode.
However, the operating cycle must be compatible with the 2
seconds required between a stop command and a new run
command.
Rs not measured (1):
The stator resistance 05.17 and voltage offset 05.23 are not
measured.
This mode is less effective than mode 0 but is compatible with
all operating cycles. During commissioning, autotune when
stopped should be carried out ( 05.12 ) so as to automatically
fill in the 05.17 and 05.23 values.
Linear U/F law with boost (2):
Voltage-frequency ratio with fixed boost adjustable via
parameters 05.15 and 05.09.
Note:
Use this mode to control several motors connected in parallel.
Rs measured after each factory setting (3):
After a return to factory settings, the stator resistance 05.17
and voltage offset 05.23 are measured the first time the drive
is enabled (drive output active).
Rs measured after each power up (4):
The stator resistance 05.17 and voltage offset 05.23 are
measured the first time the drive is enabled (drive output
active) following each power-up.
CAUTION:
A voltage is briefly applied to the motor. For safety reasons,
no electrical circuit must be accessible once the drive is
powered up.
Square U/F law with boost (5):
Square law characteristic.
05.15 : Low frequency voltage boost
Adjustment range : 0.0 to 25.0% of motor Un ( 05.09 )
Factory setting : 1.0% motor Un
Format: 16 bits
If 11.31 is set to «Induction motor in open loop mode» (1) and
05.14 to «Linear U/F law with boost (2)» or «Square U/F law with
boost (5)» parameter 05.15 is used to overflux the motor at low
speed so that it delivers more torque on starting. It is a percentage
of the motor rated voltage ( 05.09 ).
05.16 : Not used
Motor voltage
Boost
Motor
frequency
05.09 /2
05.09
05.06 /2 05.06
05.15
Motor voltage
Boost
Motor frequency
05.09
05.06
05.15
Motor voltage
Boost
Motor
frequency
05.09
/2
05.09
05.06
/2
05.06
05.15