nord NORDAC PRO SK 500E Series - P504 Pulse frequency; P505 Abs. minimum frequency; P506 Automatic error acknowledgement

5 Parameters
BU 0505 EN-3021 137
P504
Pulse frequency
(Pulse frequency)
S
3.0 ... 16.3 kHz
{ 6.0 / 4.0 }
The internal pulse frequency for controlling the power unit 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 best possible degree o
f interference suppression for the device is adhered to by
using the default value and taking the wiring directives into consideration.
NOTE:
Raising the pulse frequency leads to a reduction of the possible output current,
depending on the time (I
2
t
curve). When the temperature warning limit (C001) is
reached, the pulse frequency is gradually lowered to the default value. If the inverter
temperature drops by a sufficient amount, the pulse frequency is increased to the
original value.
Pos: 307 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P500- P599/Parameter P504 – Pul sfrequenz_Ergänzun g_01 [SK 2xxE, SK 5xxE] @ 10\mod_ 1456913909070_388.doc x @ 311390 @ @ 1
NOTE: Setting 16.1: The automatic adaptation of the pulse
frequency is activated with this
setting. When doing this, the frequency inverter permanently determines the
maximum possible pulse frequency taking different influential factors into
consideration such as the heat sink temperature or an overcurrent warning
Pos: 308 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P500- P599/Parameter P504 – Pul sfrequenz_Ergänzun g_02 [SK 5xxE] @ 11\mod_1460 116890016_388.doc x @ 316525 @ @ 1
NOTE:
In case of overload of the frequency inverter, the pulse frequency is reduced
automatically, depending on the instantaneous degree of overload, in order to
prevent an overcurrent shut-down (see also P537).
However, the use of a sine wave filter requires a
constant pulse frequency at all
times, as otherwise "Module error" (E4.0) shut-downs will be triggered.
The necessary constant pulse frequencies are selected with the following settings:
Setting 16.2: 6 kHz
Setting 16.3: 8 kHz
NB: With these settings,
short circuits at the output which occur before enabling may
possibly not be detected correctly.
Pos: 309 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P500- P599/Parameter P505 – Abso lute Minimalfrequenz @ 0\mod_1328091889383_388. docx @ 10996 @ @ 1
P505
Abs. minimum frequency
(Absolute minimum frequency)
S P
0.0 ... 10.0 Hz
{ 2.0 }
Specifies the frequency value that cannot be undershot by the FI. If the setpoint is less
than the
abs. minimum frequency, the FI switches off or switches 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 to a minimum of
2Hz. From 2Hz, the current control of the FI operates and a connected motor can supply sufficient
torque.
NOTE:
Output frequencies of < 4.5 Hz lead to current limitation (please see chapter 8.4 "
Reduced output
power").
Pos: 310 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P500- P599/Parameter P506 – Aut omatische Störungsqui ttierung @ 0\mod_13280919 34274_388.doc x @ 11019 @ @ 1
P506
Automatic error
acknowledgement
(Automatic error acknowledgement)
S
0 ... 7
{ 0 }
In addition to the manual error acknowledgement, an automatic one can also be selected.
0 = No automatic error acknowledgement.
1 ... 5 = Numberof permissible automatic error acknowledgements 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 = Via Deactivate enable: acknowledgement is only possible using the OK / ENTER key
or by mains switch-off. No acknowledgement is implemented by removing the enable!
NOTE: If (P428) is parameterised to "ON", parameter (P506) "Automatic error acknowledgement"
must not be parameterised to setting 6 "Always" as otherwise the device or system is endangered
due to the possibility of continuous restarting in the case of an active error (e.g. short-circuit to
earth / short circuit).
Pos: 311 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P500- P599/Parameter P507 – PPO-Ty p @ 0\mod_ 1328091974415_388.doc x @ 11042 @ @ 1