NORDAC SK 5xxE Manual
26 Subject to technical alterations BU 0500 GB
2.8.1 Mains supply (X1-PE, L1, L2/N, L3)
No special safety measures are required on the mains input side of the frequency inverter. It is advisable to
use the normal mains fuses (see technical data) and a main switch or circuit breaker.
115V devices of 0.25kW to 0.75kW may only be used with a 110…120V (L/N = L1/L2) single phase supply.
230V devices of 0.25kW to 2.2kW may optionally be operated with single phase 230V (L/N = L1/L2) or three
phase (L1/L2/L3) supplies.
All 400V devices and devices ≥ 3kW may only be operated with a three-phase supply (L1/L2/L3). For the exact
specification, please refer to the technical data in Section 7.
Note: The use of this frequency inverter on an IT
network is possible after modifications by means
of jumpers. Further details in Section 2.86 – 2.8.7.
Cable cross-section: 0.2 ... 6mm
2
stiff cable
0.2 ... 4mm
2
flexible cable
AWG 24-10
2.8.2 Multi-function relay (X3 – 1, 2, 3, 4)
The functions of this relay can be set as required using the parameters P434 to P443. The contacts may only
be operated with a maximum of 230V AC / 24V DC, 2A.
In the default setting, the terminals 1-2 (output 1, P434) can control a mechanical motor brake. This is then
released or applied at the correct time. To optimise the process, the appropriate delay times (0.2 – 0.3 sec)
should be set in the parameters P107/P114.
In the default setting, the closed contact on terminals 3-4 (output 2, P441) reports the readiness of the
frequency inverter. If there is an error message or the frequency inverter is without voltage, this contact is
open.
Cable cross-section: 0.14 ... 2.5mm
2
stiff cable
0.14 ... 1.5mm
2
flexible cable
AWG 26-14
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