nord NORDAC PRO SK 511E Series - Page 166

SK 54xE – Users Manual for Frequency Inverters
166 BU 0505 EN-3021
E003
3.0 I
2
t overcurrent limit
a.c. inverter: I
2
t limit has triggered, e.g. > 1.5 x I
n
for 60s
(also note P504)
• Continuous overload at inverter output
• Possible encoder fault (resolution, defect,
connection)
3.1 Chopper overtemperature I
2
t
Brake chopper: I
2
t limit has activated, 1.5 times values
reached for 60s (please also pay attention to P554, if
present, and P555, P556, P557)
• Avoid overcurrent in brake resistance
3.2 IGBT overcurrent
125% monitoring
De-rating (power reduction)
• 125% overcurrent for 50ms
• Brake chopper current too high
• for fan drives: enable flying start circuit (P520)
3.3 IGBT overcurrent fast
150% monitoring
De-rating (power reduction)
• 150% overcurrent
• Brake chopper current too high
Pos: 453 /Anleitungen/ Elektronik/F U und Starter/6. Meldungen zu m Betriebszustand/Stör meldungen (Auflis tung)/Fehler E004 [ SK 180E/SK 2xxE/SK 5xxE] @ 2\mod_13 47453306910_388.doc x @ 46501 @ @ 1
E004
4.0 Overcurrent module
Error signal from module (short duration)
• Short-circuit or earthing fault at FI output
• Motor cable is too long
• Use external output choke
• Brake resistor faulty or resistance too low

Do not shut off P537!
The occurrence of a fault can significantly shorten the
service life of the device, or even destroy it.
4.1 Overcurrent measurement
"Overcurrent measurement"
P537 (pulse current switch-off) was reached 3x within 50 ms
(only possible if P112 and P536 are disabled)
• FI is overloaded
• Drive sluggish, insufficiently sized
• Ramps (P102/P103) too steep -> Increase ramp time
• Check motor data (P201 … P209)
Pos: 454 /Anleitungen/ Elektronik/F U und Starter/6. Meldungen zu m Betriebszustand/Stör meldungen (Auflis tung)/Fehler E005 [ SK 180E/SK 2xxE/SK 5xxE] @ 2\mod_1347453309 234_388.docx @ 46526 @ @ 1
E005
5.0 Overvoltage UZW
Link circuit voltage too high
• Increase deceleration time (P103)
• If necessary, set switch-off mode (P108) with delay
(not with lifting equipment)
• Extend emergency stop time (P426)
• Fluctuating speed (e.g. due to high centrifugal
masses)  adjust U/f characteristic curve if
necessary (P211, P212)
Devices with brake chopper:
• Reduce energy return using a braking resistor
• Check the function of the connected braking resistor
(broken cable)
• Resistance value of connected braking resistor too
high
5.1 Mains overvoltage
Mains voltage is too high
• See technical data ( Section
7)
Pos: 455 /Anleitungen/ Elektronik/F U und Starter/6. Meldungen zu m Betriebszustand/Stör meldungen (Auflis tung)/Fehler E006 [ SK 5xxE, SK2xxE] @ 2\mod_1361458 416246_388.doc x @ 58807 @ @ 1
E006
6.0 Charging error
Link circuit voltage is too low
• Mains voltage too low
• See technical data ( Section
7)
6.1 Mains undervoltage
Mains voltage too low
• See technical data ( Section 7)
Pos: 456 /Anleitungen/ Elektronik/F U und Starter/6. Meldungen zu m Betriebszustand/Stör meldungen (Auflis tung)/Fehler E007 [ SK 135E, SK 200E, SK 500E] @ 2\mod_13614 60459184_388.doc x @ 58907 @ @ 1