NORD Drivesystems BU0230 - Manual (Page 40)

Functional safety with NORD SK 200E frequency inverters
40 BU 0230 GB-2712
3 Assembly and installation
The installation instructions contained within this manual only deal with issues that are related to functional
safety. Additional information is contained in the manual (BU 0200 GB).
3.1 Installation and assembly
The installation instructions contained in BU0200 GB must be observed!
3.2 Wiring guidelines
With regard to this item, please observe the appropriate chapter of BU 0200 GB and the following sections
in this manual.
3.3 Mains supply (X1-PE, L1, L2/N, L3)
Devices which implement a safety function may only be operated on TN and TT networks. The equipment
has not been designed for operation at IT and "Grounded Corner" networks.
3.4 Control Unit Terminal Block
The control terminals are located on the inside of the frequency inverter connection unit. The connections
differ according to the version (SK 205E, SK 210E, SK 215E, SK 230E, SK 235E).
Connection terminals: Screw terminals, 3.5 mm slot-head screwdriver
Connection cross-section: Size 1 to 3:
0.2 … 2.5 mm 2
: rigid or flexible
AWG 24-12,
0.25 … 2.5 mm 2
: flexible with wire end sleeve with or without plastic tube
Connection for multiple wires
0.2 … 1 mm 2
: rigid
0.2 … 1.5 mm 2
: flexible
0.25 … 1 mm 2
: flexible with wire end sleeve without plastic tube
0.5 … 1 mm 2
: flexible with TWIN wire end sleeve with plastic tube
Size 4:
0.2 … 2.5 mm 2
: rigid or flexible
AWG 24-14,
0.25 … 2.5 mm 2
: flexible with wire end sleeve with or without plastic tube
Connection for multiple wires
0.2 … 0.75 mm 2
: rigid
0.2 … 0.75 mm 2
: flexible
0.25 … 0.75 mm 2
: flexible with wire end sleeve without plastic tube
0.5 … 0.75 mm 2
: flexible with TWIN wire end sleeve with plastic tube
Tightening torque: 0.5 ... 0.6 Nm
Control cable: Lay and shield separately from the mains/motor cables