Nidec LEROY-SOMER Powerdrive FX, Commissioning Manual

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127
ADVANCED PARAMETER-SETTING MODE
Commissioning manual Powerdrive MD2/FX
4617 en - 2017.09 / e
12.33 : Function 2 variable 1 scale
Adjustment range : ± 4.000
Factory setting : 1.000
Format: 16 bits
Used to scale variable 1 before processing.
CAUTION:
The value of the scaling output can only be between
-32767 and +32767. Take this into account depending on
the adjustment range of the source parameter.
12.34 : Function 2 variable 2 scale
Adjustment range : ± 4.000
Factory setting : 1.000
Format: 16 bits
Used to scale variable 2 before processing.
CAUTION:
The value of the scaling output can only be between
-32767 and +32767. Take this into account depending on
the adjustment range of the source parameter.
12.35 : Function 2 applied factor
Adjustment range : 0.00 to 100.00
Factory setting : 0.00
Format: 16 bits
Depending on its function, the internal variables processing
block may require an associated parameter.
If the block is used to create a first-order filter, the associated
parameter is used as a time constant; if it is used to generate a
ramp, this parameter is used to adjust the ramp value
(in seconds). The ramp time corresponds to the time for changing
from 0 to 100% of the maximum value of the source parameter.
If the block is used as a power, this parameter is used as
follows:
Function Associated parameter value
V1
2
2.00
V1
3
3.00
√V1 12.00
3
√V1
13.00
12.36 to 12.39 : Not used
12.40 : Brake release
Adjustment range : Disabled (0) or Enabled (1)
Format: 8 bits
Indicates the state of the brake control output.
Disabled (0):
The brake is applied.
Enabled (1):
The brake is released.
12.41 : Brake controller
Adjustment range : Disabled (0) or Enabled (1)
Factory setting : Disabled (0)
Format: 8 bits
Disabled (0):
Brake control is not enabled.
Enabled (1):
Brake control is enabled. The output is not assigned
automatically; it is up to the user to select the destination for
parameter 12.40
Note:
Enabling brake control imposes a stop on ramp mode 06.01
= Ramp (1).
The flying restart function (
06.09
= enabled (1)) is not
compatible with the brake control function (see 06.09 ).
By convention, in hoisting, configure ascent in rotation with a
positive speed, and descent with a negative speed.
12.42 : Upper current threshold ( )
Adjustment range : 0 to 200%
Factory setting : 30%
Format: 16 bits
Used to set the current threshold at which the brake will be
controlled. This current level should ensure sufficient torque at
the time the brake is released.
12.43 : Lower current threshold
Adjustment range : 0 to 200%
Factory setting : 10%
Format: 16 bits
Used to set the current threshold below which brake control will
be disabled. It should be set so that loss of the motor power
supply is detected.
12.44
: Brake release speed
Adjustment range : 0.00 to 100.00 rpm
Factory setting : 30.00 rpm
Format: 16 bits
Used to set the speed threshold at which the brake will be
controlled. This speed level should ensure sufficient torque is
provided to drive the load in the right direction when the brake
is released. In general, this threshold is set at a value slightly
above the motor slip expressed in rpm.
Example:
- 1500 rpm = 50 Hz
- Rated on-load speed = 1470 rpm
- Slip = 1500 - 1470 = 30 rpm
12.45
: Brake apply speed
Adjustment range : 0.00 to 100.00 rpm
Factory setting : 5.00 rpm
Format: 16 bits
Used to set the speed threshold at which brake control will be
disabled. This threshold enables the brake to be applied before
zero speed so as to avoid load veering while the brake is being
engaged. If the frequency or speed drops below this threshold
when no stop request has been made (change of direction of
rotation), brake control will remain activated. This exception
can be used to avoid the brake being applied as the motor
passes through zero speed.