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

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152
ADVANCED PARAMETER-SETTING MODE
Commissioning manual Powerdrive MD2/FX
4617 en - 2017.09 / e
18.11 : Current offset
Adjustment range: ± 300.0%
Factory setting: 0.0%
Format: 16 bits
This parameter is used as the active current reference when
the drive is configured for current control ( 18.28 ). Specify a
positive reference for the power to be absorbed from the mains
supply to the drive and a negative reference for the power to
flow from the drive to the mains supply.
18.12
: Reactive final reference current
Adjustment range: ± 300.0%
Format: 16 bits
Reading of the reactive reference current after application of
compensations.
18.13 : Current loop proportional gain
18.14 : Current loop integral gain
Adjustment range: 0 to 250
Factory setting: 18.13 = 30
18.14 = 40
Format: 16 bits
Due to a number of factors internal to the drive, oscillations
may occur in the following cases:
- Frequency control with current limiting around the rated
frequency and on load impacts
- Torque control on machines with a low load and around the
rated speed
- On a mains supply break or on a controlled deceleration ramp
when control via the DC bus is requested
To reduce these oscillations, we recommend that you first:
- Increase the proportional gain 18.13
- Then reduce the integral gain 18.14
18.15
: Current magnitude
Adjustment range: 0.00 to 2.2 x 11.32
Format: 32 bits
Reading of the rms current in each drive input phase. This is
the result of the vectorial sum of the reactive current and the
active current.
Note:
The adjustment range of 18.15 is limited by the max. drive
current (drive I
max
= 2.22 x 11.32 ).
18.16
: Active current
Adjustment range: ± 2.2 x 11.32
Format: 32 bits
Reading of the active current absorbed by the drive. The active
current reflects the drive load. A negative value indicates that
power is returned to the mains supply, whilst a positive value
indicates that the drive absorbs the power from the mains supply.
Note:
Max. drive current = 2.22 x 11.32
18.17
: Reactive current
Adjustment range: ± 2.2 x 11.32
Format: 32 bits
Reading of the reactive current on the mains supply side: This
current is not directly linked to the load level and is used to vary
the power factor (cos
ϕ
):
- If the parameter is positive, the absorbed current lags the
supply voltage
- If the parameter is negative, the absorbed current leads the
supply voltage
Note:
Max. drive current = 2.22 x 11.32 .
18.18 : Overriding current limit
Adjustment range: 0 to 300%
Format: 16 bits
Indication of the rms current limit value of the Regen drive.
This value depends on 18.19 and limits internal to the drive.
18.19 : Symmetric current limit
Adjustment range: 0.0 to 300.0%
Factory setting: 150.0%
Format: 16 bits
Used to set the maximum permanent current limit permitted
when both absorbing and returning power.
The 18.19 current limit depends on 18.26 .
18.20 : Input inductance value
Reserved
18.21 : Regen healthy
Adjustment range: Disabled (0) or Enabled (1)
Format: 8 bits
Indicates whether the drive is synchronised with the mains
supply in regenerative mode. In this mode, after a run
command, the drive first detects the mains supply phase and
synchronises with it. Until this synchronisation is achieved, this
parameter indicates «Disabled». Once it is finished, the
parameter changes to «Enabled» and load can be applied to
the DC bus.
18.22 : Binary statuses 10.01 to 10.15 in Regen
Adjustment range: 0 to 32767
Format: 16 bits
Binary state of parameters 10.01 to 10.15 of the Regen
drive. A copy of parameter 10.40 of the Regen drive.
18.23
: Regen drive status
Adjustment range: 0 to 36
Format: 8 bits
A copy of parameter 10.98 of the Regen drive.