KT-Elektronik SOL3-3, Installation And Owner'S Manual, Page: 67 / 88

KT-Elektronik SOL3-3
11 Electrical connection
ATTENTION!
VDE and utility specifications and regulations have to be attended to when
wiring and connecting the controller. Therefore, this task has to be
performed by qualified personnel only!
11.1 Notes for wire installation

230 V-supply lines and signal lines must be routed in separate cables! To increase
noise resistance, a minimum distance of 10 cm between each cable has to be kept!
This spatial separation has to be considered also in control cabinets!

The cables for digital signals (bus lines) and analogue signal lines (sensor lines,
analogue outputs) must also be routed in separate cables!

It is recommended to use shielded cables for analogue signal lines in systems with
high electromagnetic noise level. The shield is to be single-earthed either at input or
output of the cabinet with a large area contact! The central earthing point is to be
connected to the protective earth conductor PE with the shortest possible cable
(>= 10 mm² in diameter)!

Inductances in the cabinet, like contactor coils, are to be supplied with appropriate
snubber circuits (RC snubber)!

High field strength cabinet components like transformers and frequency inverters
should be shielded by separating plates with good earthing.
11.2 Surge Protection Measures

Signal lines routed outdoor or over long distances should be surge protected! For
bus lines, such measures are essential.

The shielding of signal lines laid outdoor must be conductive and double-earthed.

The surge arrester has to be connected to the input of the control cabinet.
11.3 Connecting the controller
The connection is performed according to the following wiring diagram. The housing has
to be opened to connect the cables. The housing has marked feedthroughs on the upper
or lower side or on the mounting panel that have to be broke through and then supplied
with the appropriate grommets respectively screwing.
EB_37383_SOL3-3_EN002
67