General Wiring Guidelines - Danfoss VLT MCB 150 Operating Instructions Manual

Installation
NOTICE
The connections are not pre-wired from factory.
9. Fit the LCP or blind cover in the extended LCP
frame.
10. Connect power to the frequency converter.
11. Set up the input/output functions in the
corresponding parameters, as mentioned in the
manual for the Safe Plug-in in MCT 10
The commissioning test report is automatically generated
via the Safe Plug-in in MCT 10 after downloading the
parameters to the safety option.
CAUTION
The operator or electrical installer is responsible for
proper grounding and compliance with all applicable
national and local safety regulations.

4.1.4 General Wiring Guidelines

Inputs
Use appropriate wiring to exclude short circuits between
the inputs or to a supply line
Output
Use separate multicore cable for supply voltages to avoid
short circuits between the cable from the output (S37) to
the 24 V DC supply line
CAUTION
As a result of short circuits, it is no longer possible to
switch off the frequency converter terminal 37.
NOTICE
Control cables must be screened/armoured.
See the section Earthing of Screened Control Cables in the
®
VLT AutomationDrive Design Guide for detailed specifi-
cations.
Only screened cables are suitable for connecting encoders.
NOTICE
All signals to safety option must be PELV supplied and
comply with EN IEC 60204.
•
Route sensitive control cables - such as encoder
and active safety component cables - without any
MG34W302
Operating Instructions
•
•
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Danfoss A/S © Rev. 2014-02-11 All rights reserved.
interruption with optimum screen support at
both ends
Connect screens at both ends to the grounded
enclosures through a good electrical connection
and through a large surface area
Connect cable screens as close as possible to the
cabinet cable entry
If at all possible, intermediate terminals should
not interrupt cable screens
Retain cable screens for both power cables as
well as for signal and data cables using the
appropriate EMC clamps. The screen clamps must
connect the screen to the EMC shield bar or the
screen support element for control cables
through a low inductive connection through a
large surface area.
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