NORD Drivesystems BU0510 - Manual (Page 45)

4 Parameter settings
BU 0510 GB-3911 Subject to technical alterations 45
Parameter
{factory setting}
Setting value / Description / Note Device Supervisor Parameter set
P461
Function of 2nd encoder
(Function of 2nd encoder)
0 ... 5
{ 0 }
SW 1.7 or higher
and hardware status
CAA
The actual speed list value supplied to the FI by an HTL incremental encoder can be used for
various functions in the FI. (The settings are identical to (P325)). The HTL encoder is connected
via digital inputs 2 and 4. The parameters (P421) and (P423) must be set accordingly to functions
43 "Track A" and 44 "Track B". Due to the frequency limit (max. 10kHz) these only restricted
encoder solutions (P462) are possible with these digital inputs. The mounting location (motor
shaft or output side) of the encoders is taken into account by the parameterisation of an
appropriate speed ratio (P463).
0 = Speed measurement Servo mode: The actual motor speed list value is used for the FI
servo mode. In this function the ISD control cannot be disabled.
Position control is also available as of software version 2.0.
1 = PID actual frequency value: The speed list value of a system is used for speed control.
This function can also be used for controlling a motor with a linear characteristic curve.
Here P413 and P414 determine the P and I component of the control.
2 = Frequency addition: The determined speed is added to the actual setpoint value.
3 = Frequency subtraction: The determined speed is subtracted from the actual setpoint.
4 = Maximum frequency: The maximum possible output frequency / speed is limited by the
speed of the encoder.
5 = Actual position value: The HTL encoder is used for position control but not for speed
control. (SW 2.0 and above)
P462
Pulse number 2nd encoder
(Pulse number of 2nd encoder)
16 ... 8192
{ 1024 }
SW1.7 and above
Input of the pulse-count per rotation (16 - 8192) of the connected HTL incremental encoder.
If the direction of rotation of the encoder is not the same as that of the FI, (depending on
installation and wiring), it can be compensated for by selecting the corresponding negative pulse
numbers.
P463
2nd encoder ratio
(2nd encoder ratio)
0.01 ... 100.0
{ 1.00 }
SW1.7 and above
If the incremental encoder is not mounted directly onto the motor shaft, then the respectively
correct transformation ratio of the motor speed to the encoder speed must be set.
speed encoder
speed motor
P463

Only if P461 = 1, 2, 3 4 or 5, therefore not in Servo mode (motor speed control)
P470 Digital input 7
(Digital input 7)
From SK 520E
to SK 535E
0 ... 74
{ 0 }
No function as factory setting, control terminal 27 (DIN7)
Various functions can be programmed. These can be taken from tables for P420…P425.