NORD Drivesystems BU0200 - Manual (Page 213)

SK 200E Manual for frequency inverters
212 Subject to technical alterations BU 0200 GB-4411
Parameter
{Factory setting}
Setting value / Description / Note Device Supervisor
Parameter
set
P503
Leading func. output
(Master function output)
S
0 ... 3
{ 0 }
For master-slave applications this parameter specifies on which bus system the master trans-
mits the control word and the master values (P502) for the slave. On the slave, parameters
(P509), (P510), (P546 ) define the source from which the slave obtains the control word and
the master values from the master and how these are to be processed by the slave.
Specification of the communication modes on the system bus for ParameterBox and
NORD CON .
The definition of the master value or values is carried out in parameter P502.
0 = Off
No control word and master value
output.
If no BUS option (e.g. SK xU4-IOE)
is connected to the system bus, only
the device directly connected to the
ParameterBox or Nord Con is
visible.
1 = CANopen (system bus)
Control word and master values are
transferred to the system bus.
If no bus option (e.g. SK xU4-IOE) is
connected to the system bus, only
the device directly connected to the
ParameterBox or Nord Con is
visible.
2 = System bus active
No control word and master value
output.
All FIs connected to the system bus
are visible in the ParameterBox or
Nord Con, even if no bus option is
connected. Prerequisite: all FIs must
be set to this mode.
3 = CANopen + Syst em bus act ive
Control word and master values are
transferred to the system bus.
All FIs connected to the system bus
are visible in the PameterBox or Nord
Con, even if no bus option is
connected. Prerequisite: all other FIs
must be set to mode { 2 } "System bus
active"
P504
Pulse frequency
(Pulse frequency)
S
3.0 ... 16.0 kHz
{ 6.0 }
The internal pulse frequency for actuating the power component can be changed with this
parameter. A higher setting reduces motor noise, but leads to increased EMC emissions and
reduction of the possible motor nominal torque.
NOTE: The radio interference suppression limiting curve A1 according to EN55011 is
complied with at a setting of 6.0kHz on condition that the wiring guidelines are
complied with. For further details, see Section 9.4 EMC limit value classes.
NOTE: Raising the pulse frequency leads to a reduction of the possible output current,
depending on the time (I
2
t curve). For further details, see Section 9.5 Reduced
output power.
P505
Absolute mini. freq.
(Absolute minimum frequency)
S P
0.0 ... 10.0 Hz
{ 2.0 }
Gives the frequency value that cannot be undershot by the FI. If the setpoint is smaller than the
absolute minimum frequency, the FI switches off or changes to 0.0Hz.
At the absolute minimum frequency, braking control (P434) and the setpoint delay (P107) are
actuated. If a setting value of "Zero" is selected, the brake relay does not switch during
reversing.
When controlling lift equipment without speed feedback, this value should be set at a minimum
of 2Hz. From 2Hz, the current control of the FI operates and a connected motor can supply
sufficient torque.
NOTE: Output frequencies < 4.5Hz result in a reduced current overload capacity. For
further details, see Section 9.5 power derating.