NORDAC SK 5xxE Manual
106
Subject to technical alterations
BU 0500 GB
Parameter
Set value / Description / Note
Device
Supervisor
Parameter
set
P516
Masking frequency 1
S P
0.0 ... 400.0 Hz
[ 0.0 ]
The output frequency around the frequency value (P517) set here is masked.
This range is transmitted with the set brake and acceleration ramp; it cannot be continuously
supplied to the output. Frequencies below the absolute minimum frequency should not be set.
0 =
Masking frequency inactive
P517
Masking frequency range 1
S P
0.0 ... 50.0 Hz
[ 2.0 ]
Masking range for the >Masking frequency 1< P516. This frequency value is added and
subtracted from the masking frequency.
Masking frequency range 1: P516 - P517 ... P516 + P517
P518
Masking frequency 2
S P
0.0 ... 400.0 Hz
[ 0.0 ]
The output frequency around the frequency value (P519) set here is masked.
This range is transmitted with the set brake and acceleration ramp; it cannot be continuously
supplied to the output. Frequencies below the absolute minimum frequency should not be set.
0 =
Masking frequency inactive
P519
Masking frequency range 2
S P
0.0 ... 50.0 Hz
[ 2.0 ]
Masking range for the >Masking frequency 2< P518. This frequency value is added and
subtracted from the masking frequency.
Masking frequency range 2: P518 - P519 ... P518 + P519
P520 Flying
start
S P
0 ... 4
[ 0 ]
This function is required to connect the FI to already rotating motors, e.g. in fan drives. Motor
frequencies >100Hz are only picked up in speed controlled mode (Servo mode P300 = ON).
0 = Switched off,
no flying start circuit.
1 = Both directions,
the FI looks for a speed in both directions.
2 = Setpoint value direction,
searches only in the direction of the setpoint value present.
3 = Both directions,
only following mains supply failure and error
4 = In setpoint direction,
only following mains supply failure and error
NOTE:
For physical reasons, the flying start circuit only operates above 1/10 of the nominal
speed of rotation (P202) or a minimum of 10Hz. For example, this means a
minimum speed of rotation of 300 rpm for a 4-pole 50Hz motor.
P521
Flying start resolution
S P
0.02... 2.50 Hz
[ 0.05 ]
Using this parameter, the flying start circuit search increment size can be adjusted. Values that
are too large affect accuracy and causes the FI to cut out with an overcurrent report. If the values
are too small, the search time is greatly extended.
P522
Flying start offset
S P
-10.0 ... 10.0 Hz
[ 0.0 ]
A frequency value that can be added to the frequency value found, e.g. to remain in the motor
range and so avoid the generator range and therefore the chopper range.
