Infanor SMT-BD1/m, Manual, Page: 18 / 58

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SMT-BD1/m
Chapter 4 – Connections
Chapter 4 - Connections
1 - CONNECTION DIAGRAMS
1.1 - POWER SUPPLY AND MOTOR CONNECTIONS
For the 400 VAC drive, see manual BF/400 Rack .
For the 220 VAC drive, see manuals BF Rack or SMT-BM20 A / BMM05F/AF single-axis racks .
1.2 - SERIAL LINK CONNECTION
2 - WIRING RECOMMENDATIONS
(according to standards CEI 801 and EN55011 - see diagram "Shield connection on the connectors" –
Chapter 4, section 2.2).
2.1 - GND WIRING AND GROUNDING
CAUTION !
Each potential conducting element MUST be shielded. Several wires in the same sleeve must be twisted and
shielded.
A shield has no effect if it is not connected:
- to a reference potential,
- via a connection as short as possible (some centimeters; 10 cm is prohibited),
- by a "360°" shield connection, that means that the whole circumference of the shield sleeve must be
connected to the reference conductor by a metal collar.
According to the CEI 801 standard, connectors must be made of metal or metal plated and must allow a 360°
shield connection.
Long reference potential connections (especially with the ground) are suitable ONLY if these connections have a
very low impedance (less than 0,1
Ω
). Any shield that is not used as a conductor can be connected at both ends if
it is connected at both ends over 360° by means of metal connections ensuring the shield continuity.
The reference potential is the
ground .
Cables with low potential should NEVER run in the proximity of power lines.
If there is a potential reference, like a main chassis or a cabinet with a low impedance between its various
elements, it should be used for short connections and be grounded itself.
SMT-BD1/m
X5
PC
Serial port
360° shield connection
Sub D 9pts female Sub D 9pts female
RxD 2
TxD 3
GND 5
5 GND
2 RxD
3 TxD