TECO L510S Series - 3.3.4 Wiring and EMC guidelines

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3.3.4 Wiring and EMC guidelines.
For effective interference suppression, do not route power and control cables in the same
conduit or trunking.
To prevent radiated noise, motor cable should be put in a metal conduit. Alternatively an
armored or shielded type motor cable should be used.
For effective suppression of noise emissions the cable armor or shield must be grounded at
both ends to the motor and the inverter ground. These connections should be as short as
possible.
Motor cable and signal lines of other control equipment should be at the least 30 cm apart.
L510s has a built in Class “A” EMC filter to first Environment Restricted. (Category C2).
For some installations such as residential,(Category C1) an optional external Class “B” type
filter will be necessary. Please consult your local supplier.
Typical Wiring.
5 6
7
8
Drive
2
3
1
4
1.Protective Earth Conductor.
Conductor size for enclosure &
Backplate must comply with the local electrical
standards. Min 10mm².
2.Backplate. Galvanised steel (Unpainted).
3.Ferrite core / Output reactor
ferrite cores can be used to reduce
radiated noise due to long motor cables.
If ferrite core is used loop motor wires, 3 times
round the core. Install core as close to the
inverter as possible
Output reactors provide additional
benefit of reducing dv/dt for protection of motor
windings.
4.Metal Cable clamp. no more than 150mm from
the inverter.
Note: If no enclosure & backplate is used then
connect the cable shield by a good 360 º
termination to the Inverter output terminal E.
5.Screened (Shielded four core cable).
6.Separate Protective Earth wire, routed outside
motor cable separated be at least 100mm.
Note:- this is the preferred method specially
for large output cables and long length.
Multi-core screened (3 core & protective
earth) can be used for small power and short
length.
7.Connect the cable shield by a good
360º termination and connect to the motor
protective earth terminal.
This link must be as short as possible.
8.Motor Earth terminal(Protective Earth).
L1(L)
L3(N)
E
L1(L)
L3(N)
E
E
T1T2
T3
PE
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