NORD Drivesystems BU0505 - Manual (Page 47)

2 Assembly and installation
BU 0505 GB-1013 47
2.10.5 Electrical connections, control unit
The control connections are located under the front cover (above size 8 under the two front covers) of
the frequency inverter. The configuration differs according to the size. Up to size 7, the individual
control terminals (X3, X8, X13) are in staggered positions (please also refer to Section 2.10).
Connection data:
Frequency inverter All Size 1 … 4 Size 5 … 7 Above
size 8:
Terminal block Typically X3 X3, X8,
X12, X13
X3.1/2,
X15
Rigid cable Ø [mm²] 0.14 … 1.5 0.14 … 2.5 0.2 … 6 0.2 … 2.5
Flexible cable Ø [mm²] 0.14 … 1.5 0.14 … 1.5 0.2 … 4 0.2 … 2.5
AWG standard 26-16 26-14 24-10 24-12
Starting torque [Nm] Clamping 0.5 … 0.6 0.5 … 0.6 Clamping
[lb-in] 4.42 … 5.31 4.42 … 5.31
GND/0V is a common reference potential for analog and digital inputs.
Furthermore, it must be taken into account that with SK 5x5E size 1 ... 4 frequency inverters, terminal
44 is used to feed in the control voltage. However with devices of size 5 and above, this terminal
provides a 24V control voltage.
NOTICE Cable laying
All control cables (including the thermistor) must be laid separately from the mains and the motor cables, in order
to prevent interference to the inverter.
If the cable are laid in parallel, a minimum distance of 20cm must be maintained from cables which carry a
voltage >60V The minimum distance may be reduced by screening the cables which carry a voltage, or by the
use of earthed metal partitions within the cable conduits.
NOTICE Total currents
5V / 15V (24V) can be obtained from several terminals if required. With size 1 ... 4, the total output current must
not exceed 250mA/150mA (5V/15V). Above Size 5 the limiting value is 250mA/200mA (5V/24V).
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