Name: Nord Drivesystems NORDAC FLEX SK 215E Series
Brand: Nord Drivesystems
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NORDAC FLEX (SK 200E ... SK 235E) – Brief instructions for Frequency Inverters

90 BU 0240 en-US-4920

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Motor speed does not

correspond to setpoint

• Analog input

function set to "Frequency

additions" and another setpoint is

present

• Check P400

• Check setting of integrated

potentiometer (P1) (only

SK 2x5E)

• P420, check active fixed

frequencies

• Check bus setpoints

• Check P104/P105

"min/max

frequency"

• Check P113 "jog frequency"

Pos: 714 /A nleit ung en/El ek tr onik /FU und Star ter /6. M eldung en zum B etrie bsz ust and /Betr ie bss tör ung en (A ufli st ung) /FA Q B etri ebss tör ungen _08 [S K 2xxE, SK 2xxE-FD S] @ 9\mod_1448963473878_14638.docx @ 268639 @ @ 1

Motor generating a

considerable amount of

noise (at the current limit)

and "OFF" signal is

implemented at slow speed

with little or no control,

possibly with error message

3.0

• Tracks A and B swapped by encoder (for

speed feedback)

• Incorrect encoder resolution setting

• Encoder power supply missing

• Encoder faulty

• Check encoder connections

• Check P300, P301

• Monitor via P735

• Check encoder

Pos: 71 5 /Anlei tung en/El ektr onik/FU und Star ter/6 . Meld ungen zum Betr iebs zus ta nd/B etri ebss tör ung en (A uflis tung )/F AQ Betr ie bsst örung en _09 [S K 1x 0E, SK 2xx E, S K 2x xE-FD S] @ 9\mod_1448963460429_14638.docx @ 268606 @ @ 1

Intermittent communication

error between VFD and

optional modules

• System bus terminating resistors

incorrectly set

• Poor connection contact

• Faults on system bus line

• Maximum system bus length exceeded

• First and last subscriber only:

set DIP switches for

terminating resistor

• Check connections

• Connect GND of all VFDs

connected to system bus

• Pay attention to routing

regulations (separate routing

of signal and control cables

and power and motor cables)

• Check cable lengths (system

bus)

Pos: 716 /A nleit ung en/El ek tr onik /FU und Star ter /6. M eldung en zum B etrie bsz ust and /Betr ie bss tör ung en (A ufli st ung) /FA Q B etri ebss tör ung en_1 0_T ab elle nunt ers chr ift [SK 1xx E, SK 2x xE, SK x xx E-FD S] @ 9\mod_1448963453684_14638.docx @ 268573 @ @ 1

Table 8: FAQ operational problems

Pos: 71 8 /Anlei tung en/El ektr onik/FU und Star ter/7 . Tec hnisch e Daten/ !Tec hnisc he Date n (Übers chri ft) @ 0\mod_1328183045569_14638.docx @ 15174 @ 1 @ 1