SK 54xE – Users Manual for Frequency Inverters
146 BU 0505 EN-3021
P537
Pulse disconnection
(Pulse disconnection)
S
10 ... 200 % / 201
{ 150 }
This function prevents rapid shutdown of the FI according to the load. With the pulse switch-off
enabled, the output current is limited to the set value. This limitation is implemented by brief
switching off of individual output
stage transistors, the actual output frequency remains
unchanged.
10...200 % = Limit value in relation to nominal FI current
201 = The function is so to speak disabled,
the FI supplies the maximum
possible current. However, at the current limit the pulse switch-off can still be
active.
NOTE: The value set here can be undershot by a smaller value in P536.
With smaller output frequencies (<4.5 Hz) or higher pulse frequencies (>6
8 kHz, P504) the pulse switch-
off can be undershot by the power reduction
(please see chapter 8.4 "Reduced output power").
NOTE: If the pulse switch-
off is disabled (P537=201) and a high pulse frequency is
selected in parameter P504, the FI automatically reduces the pulse frequency
when the power limit is reached.
If the load on the FI is reduced again, the pulse
frequency increases back to the original value.
Pos: 345 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P500- P599/Parameter P538 – Net zspannungsüberwachung @ 0\mod_1328093765682_38 8.docx @ 11686 @ @ 1
P538
Check input voltage
(Mains voltage monitoring)
S
0 ... 4
{ 3 }
For reliable operation of the inverter the power supply must meet a certain
quality. If there is a
brief interruption of a phase or the voltage supply sinks below a particular limit value, the inverter
will output an error.
Under certain operating conditions, it may be necessary to suppress this error messa
case, the input monitoring can be modified.
0 = Switched off: No monitoring of the supply voltage.
1 = Phase error: an error message is only produced by phase errors.
2 = Mains voltage: an error message is only produced by a low voltage.
3 = Phase err. + mains voltage: A phase error or undervoltage produce an error message.
4 = DC supply: The input voltage is fixed at 480V for the direct supply of direct current. Phase
error and low mains voltage monitoring are deactivated.
NOTE: Operation with an impermissible mains voltage can destroy the frequency inverter!
With 1/3~230 V or 1~115 V devices, the phase error monitoring does not function!
Pos: 346 /Anleitungen/ Elektronik/F U und Starter/5. Parameter/ Parameterauflis tung (P000 ...)/P500- P599/Parameter P539 – Ausg angsüberwachung @ 0\mod_ 1328093804307_388.doc x @ 11709 @ @ 1
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