Nord Drivesystems NORDAC LINK SK250E-FDS - Motor Cable

2 Assembly and installation
BU 0250 en-3021 43
NOTICE Operation in IT networks
If a mains fault (short-circuit to earth) occurs in an IT network, the link circuit of a connected frequency inverter
may become charged, even if it is switched off. This results in destruction of the link circuit capacitors due to
overcharging.
• Connect a braking resistor to dissipate excess energy (e.g. internal braking resistor = Device with equipment
code -BRI).
Note: A braking resistor cannot be retrofitted. This must be taken into account when ordering the inverter.
• Ensure that the frequency inverter controller is ready for operation as necessary:
– If a device with an integrated mains unit (device with equipment code -HVS) is used, the internal control
unit, and therefore all monitoring functions switch on automatically.
– If a device without an integrated mains unit (device without equipment code -HVS) is used, the 24 V
supply of the device must be switched on before the mains voltage is switched on. The 24 V supply to the
device must only be switched off after the device has been disconnected from the mains voltage.
Pos: 108 /Anleitungen/ Elektronik/F U und Starter/2. Montage und Ins tallation/Elektr ischer Anschluss/ SK 1xxE, SK 2xxE, SK 5xxP, SK xxxE -FDS/Leistungsteil/ Elektrischer A nschluss Leistungstei l_Teil3 - Anpassung an IT- Netze_01 [SK xxxE-FDS] @ 11\ mod_1465560854504_3 88.docx @ 328902 @ @ 1
For operation in an IT network, the FI must be configured with modification of the integrated mains
filter. Modification of the mains filter is performed at the factory and must be taken into account in the
order. Configuration for IT networks reduces the EMC.
The insulation resistance of the frequency inverter must be taken into consideration when operating on
an insulation monitor ( Section 7 "Technical data").
Pos: 109 /Anleitungen/ Elektronik/F U und Starter/2. Montage und Ins tallation/Elektr ischer Anschluss/ SK 1xxE, SK 2xxE, SK 5xxP, SK xxxE -FDS/Leistungstei l/Elektrischer Anschluss Leistungstei l_Teil3 - Anpassung an H RG-Netze_00 [SK 1x0E,SK 2xxE,SK 2xxE-FDS] @ 20\mod_151 3689063288_388.doc x @ 2376293 @ 5 @ 1
Adaptation to HRG networks – (from size 0)
Pos: 110 /Anleitungen/ Elektronik/F U und Starter/2. Montage und Ins tallation/Elektr ischer Anschluss/ SK 1xxE, SK 2xxE, SK 5xxP, SK xxxE -FDS/Leistungsteil/ Elektrischer A nschluss Leistungstei l_Teil3 - Anpassung an HRG- Netze_01 [SK 1x0E, SK 2xxE] @ 20\mod_1513689186581_ 388.docx @ 2376329 @ @ 1
The device may also be operated in supply networks with a high resistance earthed star point (High
Resistance Grounding) (typical for the US American region). For this, the same conditions and
modifications must be taken into account as for operation in an IT network (see above).
Pos: 111 /Anleitungen/ Elektronik/F U und Starter/2. Montage und Ins tallation/Elektr ischer Anschluss/ SK 1xxE, SK 2xxE, SK 5xxP, SK xxxE -FDS/Leistungstei l/Elektrischer Anschluss Leistungstei l_Teil3 - Motorkabel_01 [SK 1 x0E, SK 2xxE, SK 2xxE-FDS, SK 5xxP] @ 48\mod_15966998277 41_388.docx @ 2658088 @ 4 @ 1
2.3.2.2 Motor cable
The motor cable may have a total length of 100 m if it is a standard cable type (observe EMC). If a
shielded motor cable is used or if the cable is installed in a metallic and well grounded duct, the total
length should not exceed 20 m (connect cable shield to PE at both ends).
Pos: 112 /Anleitungen/ Elektronik/F U und Starter/2. Montage und Ins tallation/Elektr ischer Anschluss/ SK 1xxE, SK 2xxE, SK 5xxP, SK xxxE -FDS/Leistungsteil/ Elektrischer A nschluss Leistungstei l_Teil3 - Motorkabel_02 [ SK xxxE-FDS] @ 18\mod_149639924 8534_388.docx @ 235190 6 @ @ 1
Pre-assembled motor cables are available on request.
Pos: 113 /Anleitungen/ Elektronik/F U und Starter/1. Allgemeine s/Sicherheits- und I nstallationshin weise und Warn- Gefahrenhin weise/neu/W arn- und Gefahrenhinwei se/ACHTUNG - Schalten am Ausgan g [FU] @ 33\mod_15 57398548279_388.doc x @ 2534619 @ @ 1
NOTICE!
Output switching
Switching a motor cable under load causes an impermissible increase of the load on the device.
Components in the power section may be damaged and destroyed either immediately or in the long
term.
• Only switch the motor cable when the frequency inverter is no longer pulsing. I.e. the device must
be in the state "ready for switch-on" or "switch-on block".
Pos: 114 /Anleitungen/ Elektronik/F U und Starter/2. Montage und Ins tallation/Ele ktrischer Anschlu ss/SK 1xxE, SK 2xxE, SK 5xxP, SK xxxE-FDS/Leistun gsteil/Elektri scher Anschluss Leist ungsteil_Teil3 - Motorkab el_03 [SK 1x0E, SK 2xxE, SK 2xxE-FDS] @ 33\mod_1557 404347303_388.doc x @ 2534728 @ @ 1
Information
Synchronous motors or multiple motor operation
If synchronous motors or several motors are connected in parallel to an FI, the frequency inverter
must be switched over to linear voltage/frequency characteristic curves, ( P211 = 0 and P212 = 0).
For multiple motor operation the total motor cable length consists of the sum of the individual motor
cable lengths.
Pos: 115 /Anleitungen/ Elektronik/F U und Starter/2. Montage und Ins tallation/Elektr ischer Anschluss/ SK 1xxE, SK 2xxE, SK 5xxP, SK xxxE -FDS/Leistungstei l/Elektrischer Anschluss Leistungstei l_Teil3 - Bremswiders tand_01 [SK 2xxE-FDS] @ 20\mod_1516631079564_388. docx @ 2384425 @ 4 @ 1