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4.1.4
Serial link connection
4.2.0
Wiring recommendation
(according to IEC 801 and EN 55011 standards)
4.2.1
GND wiring and grounding
The reference potential is the
earth (ground).
Motors and resolvers are grounded via their housing. If a
reference of potential exist, like a main chassis or a cabinet, with a low impedance between the different
elements, it should be used to connect ALL reference to it and also connect this reference to the earth
(ground).
Long reference potential connections are suitable ONLY if these connections have a very low impedance
(< 0.1
Ω
).
Cables with low potential must NEVER run in the proximity of power lines.
Each conductor cable (carrying a potential) must be shielded. Several wires in the same sleeve must be
twisted and shielded.
According to the IEC 801 standard, the connectors must be metallic or metal plated and must have a 360°
shield connection (see chapter 8.6.0).
4.2.2
Motor and resolver cables
Cable ends should have a metallic collar allowing a 360° shielded connection.
Motor cables (four wires) must be shielded to avoid common mode effects (Mavilor p/n 410-0051, 410-
0052, Belden p/n 9367).
The recommended resolver cable is a three pair twisted with an individual shield on each pair (Mavilor p/n
410-0053, Belden p/n 9728, Oflex p/n 34252).
4.2.3
Input command and serial link cables
Analog input command signal (CV) requires a twisted and shielded pair cable. The shield must have a
"360°" connection via metallic collars at both ends. If the shield is connected by means of a pig tail, it
must be connected at one end to a 0 Volt pin of X4 on the amplifier side with a connection as short as
possible.
Input command (CV) wiring must be made according to the polarity between the controller and the
amplifier (CV on "diff high" of the controller). Logic 0 Volt is directly connected to the amplifier housing.
The connection continuity is ensured by the fastening screws on the front panels. The amplifier 0 Volt and
the controller 0 Volt MUST be connected by means of a wire. The shield MUST NEVER be used as a
conductor of the 0 Volt potential.
The serial link cable must also be shielded according to the above mentioned shielding recommendations.
CAUTION:
The command cables (input command, serial link, position, resolver) as well as the
power cables MUST only be connected and/or disconnected with the amplifier TURNED OFF.
