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11 General Information Regarding the
Wiring
11.1 Mains Connection
NOTICE
Property damage due to incorrect mains connection
Direct connection to ungrounded / asymmetrically grounded mains (IT mains with
start point / IT delta mains) can destroy the devices.
Connecting the device to this mains type is only possible with isolating transformer.
Also consider the manual "Unit Assembly Complying to EMC", chapter "Connec‐
tion to Different Supply System Types".
11.1.1 Mains Chokes
Mains chokes limit low-frequency mains repercussions and discharge the semiconduc‐
tors and the DC link capacitors of drive amplifiers.
For S1 operation of a SIEB & MEYER drive system SD2S you require a mains choke
(see Manufacturers, page 110 ).
11.2 Cable Requirements
The cables described in this chapter meet the SIEB & MEYER requirements for cables
and connectors in order to ensure their proper function.
NOTICE
Risk of cable damage due to mechanical loads
Cables that are exposed to mechanical loads, e.g. trailing chains or similar, must
be suited for this purpose. Otherwise, damage may occur. SIEB & MEYER cables
are not suitable for trailing chains!
The machine manufacturer must ensure that only cables are used that are suitable
for this purpose.
In general, the following principles apply for the cables (see also documentation “Unit
Assembly Complying EMC”)
▶ Motor and signal cables must not be wired in the same cable protection hose!
▶ Motor cables must have a wire-meshed shield. They must be wired separately
from signal cables.
▶ Signal lines must have a wire-meshed shield. Differential signals should only be
transmitted with twisted-pair lines. They must be wired separately from motor
cables.
W
General Information Regarding the Wiring
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