NORDAC SK 200E Handbuch
122
Subject to technical alterations BU
0200
GB
Parameter
Setting value / Description / Note
Device
Supervisor
Parameter
set
P505
Abs. 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 becomes 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, 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 8.3. Power de-rating.
P506
Automatic Error
acknowledgement
S
0 ... 7
[ 0 ]
In addition to the manual error acknowledgement, an automatic acknowledgement can also be
selected.
0 = No automatic
error acknowledgement
1 = ... 5 = Number
of permissible automatic error acknowledgments within one mains-on
cycle. After mains off and switch on again, the full amount is again available.
6 = Always,
an error message will always be acknowledged automatically if the cause of the
error is no longer present.
7 = OK key,
acknowledgement is only possible using the OK key or by switching off the
mains. Acknowledgement is not implemented by removing the enable!
P509
Control word source
S
0 ... 4
[ 0 ]
Selection of the interface via which the FI is controlled.
0 = Control terminals or keyboard control
** with the SimpleBox (if P510=0), the
ParameterBox or via Bus I/O Bits.
1 = Only control terminals
*, the FI can only be controlled via the digital and analog input
signals or via the Bus I/O Bits.
2 = USS*,
the control signals (enable, rotation direction, etc.) are transferred via the RS485
interface, the setpoint via the analog input or the fixed frequencies.
3 = System bus *
4 = System bus broadcast *
*) Keyboard control (SimpleBox, ParameterBox, PotentiometerBox) is blocked,
parameterisation is still possible.
**) If the communication during keyboard control is interrupted (time out 0.5 sec), the
FI will block without an error message.
NOTE:
For details of the optional bus systems, please refer to Manual BU 0250.
- www.nord.com –
As an alternative to parameterisation, switchover to
system bus broadcast
can also be made
via DIP switch 3.
