NORD Drivesystems BU0540 - Manual (Page 14)

SK 500E – Brief instructions for frequency inverters
14 BU 0540 GB-1013
2.2 Electrical connections
WARNING
THESE DEVICES MUST BE EARTHED.
Safe operation of the devices presupposes that qualified personnel mount and operate it in compliance with the
instructions provided in these operating instructions.
In particular, the general and regional installation and safety regulations for work on high voltage systems (e.g.
VDE) must be complied with as must the regulations concerning correct use of tools and the use of personal
protection equipment.
Dangerous voltages can be present at the motor connection terminals even when the inverter is switched off.
Always use insulated screwdrivers on these terminal fields.
Ensure that the input voltage source is not live before setting up or changing connections to the unit.
Make sure that the inverter and motor have the correct supply voltage set.
Note Thermistor
As with other signal cables, thermistor cables must be laid separately from the motor cables
Depending on the size of the frequency inverter, the connection terminals for the supply cables and
the control cables are located in different positions. According to the configuration of the frequency
inverter, various terminals are not present.
Size 1 - 4 Size 5 - 7 Above size 8
1 = Mains connection L1, L2/N, L3, PE X1
2 = Motor connection U, V, W, PE X2
3 = multi-function relay 1 - 4 X3
4 = Braking resistor +B, -B X2
5 = DC - link circuit -DC X2 Above Size 8: + DC, - DC
6 = Control terminals IOs, GND, 24Vout, IG, DIP for AIN à X4, X5, X6, X7, X14
7 = Technology unit
8 = Link circuit choke -DC, CP, PE Above size 8: