NORD Drivesystems BU0505 - Manual (Page 128)

SK 54xE – Users Manual for Frequency Inverters
128 BU 0505 GB-1013
P534 [-01]
[-02]
Torque disconn. limit
(Torque disconnection limit)
S P
0 ... 400 % / 401
{ all 401 }
Via this parameter both the drive [-01] and the generator [-02] switch-off value can be adjusted.
If 80% of the set value is reached, a warning status is set. At 100% switch-off is performed with
an error message.
Error 12.1 is given on exceeding the drive switch-off limit and 12.2on exceeding the generator
switch-off limit.
[01] = drive switch-off limit [02] = generator switch-off limit
401 = OFF means that this function has been disabled.
Pos : 291 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P500-P599/ Paramet er P535 – I2t-Mot or @ 0\ mod_1328093600385_388.doc x @ 11617 @ @ 1
P535
I
2
t motor
(I
2
t motor)
0 ... 1
{ 0 }
The motor temperature is calculated according to the output current, time and the output
frequency (cooling). If the temperature limit value is reached then switch off occurs and error
message E002 (motor overheating) is output. Possible positive or negative effects of ambient
conditions cannot be taken into account.
0 = Switched off
1 = Switched on
0 … 24
{ 0 }
SW 1.6 and above
The I
2
t motor function can now be set in a differentiated manner. Up to four curves with three
different triggering times can be set. The trigger times are based on classes 5, 10 and 20 for
semiconductor switching devices. Setting 5 corresponds to the previous setting “ON”. All
curves run from 0Hz to half of the nominal frequency (P201). From half of the nominal frequency
upwards, the full nominal current is available.
Switch-off class 5, 60s at
1.5x I
N
Switch-off class 10, 120s at
1.5x I
N
Switch-off class 20, 240s at
1.5x I
N
I
N
at 0Hz P535 I
N
at 0Hz P535 I
N
at 0Hz P535
100% 1 100% 9 100% 17
90% 2 90% 10 90% 18
80% 3 80% 11 80% 19
70% 4 70% 12 70% 20
60% 5 60% 13 60% 21
50% 6 50% 14 50% 22
40% 7 40% 15 40% 23
30% 8 30% 16 30% 24
Pos : 292 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P500-P599/ Paramet er P536 – Str omgrenz e @ 0\ mod_1328093664510_388. doc x @ 11640 @ @ 1
P536
Current limit
(Current limit)
S
0.1 ... 2.0 / 2.1
(x nominal current of
FI)
{ 1.5 }
The inverter output current is limited to the set value. If this limit value is reached, the inverter
reduces the actual output frequency.
Multiplier with the inverter nominal current, gives the limit value
2.1 = OFF represents the disabling of this limit value.
Pos : 293 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P500-P599/ Paramet er P537 – Pulsabsc haltung @ 0\ mod_1328093709635_388.doc x @ 11663 @ @ 1