NORDAC SK 5xxE Manual
82
Subject to technical alterations
BU 0500 GB
5.4 Control parameters
Only available in SK 52xE/53xE with the use of an incremental encoder. Connection, see Section 2.10.
Parameter
Set value / Description / Note
Device
Supervisor
Parameter
set
P300 Servo
mode
SK 520E
and above
P
0 ... 1
[ 0 ]
This parameter activates speed control with speed measurement via an incremental encoder.
This leads to a very stable speed behaviour up to motor standstill.
0 = off
1 = on
NOTE:
For correct function, an incremental encoder must be connected (see control
connections, Section 2.10 ) and the correct pulse number must be entered in
parameter P301.
P301
Incremental encoder
SK 520E
and above
Input of the pulse-count per rotation of the connected encoder.
If the encoder rotation direction is not the same as the FI, (depending on installation and wiring),
this can be compensated for by selecting the corresponding negative pulse numbers 8...16.
0 =
500 pulses
1 =
512 pulses
2 =
1000 pulses
3 =
1024 pulses
4 =
2000 pulses
5 =
2048 pulses
6 =
4096 pulses
7 =
5000 pulses
0 ... 17
[ 6 ]
17 =
+ 8192 pulses
8 =
-500 pulses
9 =
- 512 pulses
10 =
- 1000 pulses
11 =
- 1024 pulses
12 =
- 2000 pulses
13 =
-2048 pulses
14 =
-4096 pulses
15 =
-5000 pulses
16 =
-8192 pulses
NOTE:
P301 is important for the positioning control in SK 530E If an incremental encoder is
used for positioning (P604=1), the setting of the pulse number is made here. (see
manual BU 0510)
P310
Speed controller P
SK 520E
and above
P
0 ... 3200 %
[ 100 ]
P-component of the encoder (proportional amplification).
Amplification factor, with which the speed difference is multiplied from the setpoint and actual
frequency. A value of 100% means that a speed difference of 10% produces a setpoint of 10%.
Values that are too high can cause the output speed to oscillate.
P311
Speed controller I
SK 520E
and above
P
0 ... 800 % / ms
[ 20 ]
I-component of the encoder (Integration component).
The integration component of the controller completely eliminates any control deviation. The value
indicates how large the setpoint change is per ms. Values that are too small cause the controller
to slow down (reset time is too long).
