32
MENU 3: FREQUENCY THRESHOLDS - ENCODER OPTION
LEROY-SOMER
3.3 - Explanation of parameters in
menu 3
Parameters marked with the symbol
can only be
accessed when an encoder feedback option is present.
3
.01
:Final speed reference (
)
Adjustment range : ± 2 x
1
1
.
.
0
0
6
6
rpm
Represents the sum of the post ramp reference and the hard
speed reference if this has been enabled.
3.02
:Speed feedback
Adjustment range : ± 2 x
1
1
.
.
0
0
6
6
rpm
Actual speed from the encoder.
3.03
:Speed error (
)
Adjustment range : ± 2 x
1
1
.
.
0
0
6
6
rpm
Difference between the final speed reference and the speed
feedback.
3.04
:Speed controller output (
)
Adjustment range : ± 300.0%
The speed controller output produces a torque reference to
be used in determining the value of the active current.
3.05
:Zero speed threshold
Adjustment range : 0 to 500 rpm
Factory setting
: 30 rpm
If the motor speed
2
2
.
.
0
0
1
1
is at or below the level defined by this
parameter, the zero speed alarm
1
1
0
0
.
.
0
0
3
3
will be at 1,
otherwise it will be at 0.
3.06
:At speed lower limit
Adjustment range : 0 to 500 rpm
Factory setting
: 30 rpm
Defines the window within which the "At speed" alarm is
activated.
1
1
0
0
.
.
0
0
6
6
is at 1 when the post-ramp reference equals the
reference ± (
3
3
.
.
0
0
6
6
/2).
3.07, 3.08, 3.09
to
: Not used
3.10
:Speed controller proportional gain (Kp1)
(
)
Adjustment range : 0 to 32000
Factory setting
: 200
Adjusts the stability of the motor speed in the event of sudden
variations in the reference.
Increase the proportional gain until vibration occurs in the
motor, then reduce the value by 20 to 30%, checking that the
motor remains stable in the event of sudden variations in
speed, both at no load and on load.
3.11
:Speed controller integral gain (Ki1) (
)
Adjustment range : 0 to 32000
Factory setting
: 100
Adjusts the stability of the motor speed on load impact.
Increase the integral gain so that the same speed is obtained
on load and at no load in the event of load impact.
3.12
:Speed controller differential feedback gain
(Kd1) (
)
Adjustment range : 0 to 32000
Factory setting
: 0
Adjusts the stability of the motor speed in the event of load
shedding or sudden variations in the reference.
Reduces overshoots.
In general, leave the setting at 0.
Function not available in version V2.10.
3.13
:Speed controller proportional gain (Kp2)
(
)
Adjustment range : 0 to 32000
Factory setting
: 200
Adjusts the stability of the motor speed in the event of sudden
variations in the reference.
The drive takes account of Kp1 (
3
3
.
.
1
1
0
0
) or Kp2 (
3
3
.
.
1
1
3
3
)
depending on the value of
3
3
.
.
1
1
6
6
.
3.14
:Speed controller integral gain (Ki2) (
)
Adjustment range : 0 to 32000
Factory setting
: 100
Adjusts the stability of the motor speed on load impact.
The drive takes account of Ki1 (
3
3
.
.
1
1
1
1
) or Ki2 (
3
3
.
.
1
1
4
4
)
depending on the value of
3
3
.
.
1
1
6
6
.
3.15
:Speed controller differential feedback gain
(Kd2) (
)
Adjustment range : 0 to 32000
Factory setting
: 0
Adjusts the stability of the motor speed in the event of load
shedding or sudden variations in the reference.
The drive takes account of Kd1 (
3
3
.
.
1
1
2
2
) or Kd2 (
3
3
.
.
1
1
5
5
)
depending on the value of
3
3
.
.
1
1
6
6
.
Function not available in version V2.10.
3.16
:Speed controller gain select (
)
Adjustment range : 0 or 1
Factory setting
: 0
This parameter can be modified when the drive is disabled or
enabled.
0 (gai.1): Selection of Kp1 (3
3
.
.
1
1
0
0
), Ki1 (3
3
.
.
1
1
1
1
) and Kd1
(3
3
.
.
1
1
2
2
) gains.
1 (gai.2):
Selection of Kp2 (
3
3
.
.
1
1
3
3
), Ki2 (
3
3
.
.
1
1
4
4
) and Kd2
(
3
3
.
.
1
1
5
5
) gains.
3
3
.
.
0
0
1
1
3
3
.
.
0
0
2
2
3
3
.
.
0
0
3
3
3
3
.
.
0
0
4
4
3
3
.
.
0
0
5
5
3
3
.
.
0
0
6
6
3
3
.
.
0
0
7
7
3
3
.
.
0
0
9
9
3
3
.
.
1
1
0
0
3
3
.
.
1
1
1
1
3
3
.
.
1
1
2
2
3
3
.
.
1
1
3
3
3
3
.
.
1
1
4
4
3
3
.
.
1
1
5
5
3
3
.
.
1
1
6
6