If slip compensation is required
Motor Rated Speed
(05.008) should be set to the motor nameplate value, which should give the correct compensation for a
hot motor providing the nameplate value is correct. Slip compensation can be used throughout the speed range of the motor, i.e. below base speed and in the
flux weakening region, to correct the motor speed to minimise the change of speed with load.
Slip Compensation Level
(05.027) is provided for the user to be
able to set the amount of compensation applied. At its default value of 100.0%
Rated slip
is applied and reducing it below 100.0% will reduce the amount of
slip compensation, which may be required if some instability is experienced. Setting
Slip Compensation Level
(05.027) negative causes the motor frequency to
reduce as load is applied introducing speed droop, which can be used to aid load sharing with mechanically coupled motors.
Slip Compensation =
Rated Slip
x
Torque Producing Current
(04.002) / ITrated x
Slip Compensation Level
(05.027) / 100
where I
Trated
= Torque Rated Current (see
Torque Producing Current
(04.002) )
The amount of slip compensation applied can be limited by
Slip Compensation Limit
(05.033)
In Ur modes of operation the amount of slip can be increased at low output frequecies to boost torque capability at these frequencies. Also when
Open-
loop Voltage Mode
(05.014) is set to mode 6 (Fixed Tapered) the slip can be tapered to 0 at very low frequencies to prevent creep at standstill,see
Low Frequency Estimator Threshold, Low Frequency Torque adjustment
(05.084) .
Slip compensation is disabled under the following conditions:
1.
Motor Rated Speed
(05.008) = 0
2.
Motor Rated Speed
(05.008) =
Motor Rated Frequency
(05.006) x 60 / Pole pairs, i.e. synchronous speed.
3.
Slip Compensation Level
(05.027) = 0.0%
4.
Slip Compensation Limit
(05.033) = 0.00Hz
It should be noted that
Motor Rated Speed
(05.008) is used to calculate the rotor time constant of the motor which is then used to determine the flux build-up
time at the start of the catch a spinning motor algorithm. If spinning start is required (i.e.
Catch A Spinning Motor
(06.009) ≥ 1) then
Motor Rated Speed
(05.008) should be set up correctly for the motor. If slip compensation is not required, it can be disabled by setting
Slip Compensation Level
(05.027) to 0.0%.
Parameter
05.007
Motor Rated Current
Short description
Set to the rated current rated of the motor
Mode
Open
‑
loop
Minimum
−VM_RATED_CURRENT
Maximum
VM_RATED_CURRENT
Default
0.00
Units
A
Type
32 Bit User Save
Update Rate
Background read
Display Format
Standard
Decimal Places
2
Coding
RW, VM, RA
Motor Rated Current
is used as follows:
1. To define the rated operating conditions for motor thermal protection. See
Thermal Protection Mode
(04.016).
2. To define the range of the current limits.
3. In the motor control algorithm for Open-loop and Closed Loop asynchronous modes.
Parameter
05.008
Motor Rated Speed
Short description
Set to the rated speed of the motor
Mode
Open
‑
loop
Minimum
0.0
Maximum
33000.0
Default
See exceptions below
Units
rpm
Type
32 Bit User Save
Update Rate
Background read
Display Format
Standard
Decimal Places
1
Coding
RW
Region
Default Value
50Hz
1500.0
60Hz
1800.0
See
Motor Rated Frequency
(05.006).
Parameter
05.009
Motor Rated Voltage
Short description
Set to the rated voltage of the motor
Mode
Open
‑
loop
Minimum
−VM_AC_VOLTAGE_SET
Maximum
VM_AC_VOLTAGE_SET
Default
See exceptions below
Units
V
Type
16 Bit User Save
Update Rate
16ms
Display Format
Standard
Decimal Places
0
Coding
RW, VM, RA
Voltage
Region
Default Value
110V
All
230
200V
All
230
400V
50Hz
400
400V
60Hz
460
575V
All
575
690V
All
690
Unidrive M200 Parameter Reference Guide
Issue: 01.05.00.10
65
Содержание unidrive m200
Страница 1: ...Parameter Reference Guide Unidrive M200 Open loop Mode Issue 01 05 00 10 ...
Страница 29: ...Menu 2 Frequency Ramps Mode Open loop Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 29 ...
Страница 30: ...30 Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 ...
Страница 83: ...Enable logic Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 83 ...
Страница 100: ...Menu 7 Analog I O Mode Open loop 100 Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 ...
Страница 113: ...Menu 8 Digital I O Mode Open loop Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 113 ...
Страница 125: ...Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 125 ...
Страница 144: ...Menu 10 Status and Trips Mode Open loop 144 Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 ...
Страница 145: ...Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 145 ...
Страница 204: ...204 Unidrive M200 Parameter Reference Guide Issue 01 05 00 10 ...