5 Electrical installation
5.1.3
BL 4100-M / BL 4100-D: Proper wiring
The following must be observed for servo drives of type BL 4100-M / BL 4100-D to ensure
a safe and EMC-compliant design of the drive system:
Dangerous electrical voltage!
For safety reasons, all of the PE earth (ground) conductors must be connected prior to
the initial operation of the system. The shields must be connected on both sides.
The EN 61800-5-1 regulations concerning protective earthing (grounding) must be
complied with during the installation.
Motor and servocontroller must be screwed firmly and with good conductivity to the
machine or the control cabinet, which in turn must be well earthed. Moving system parts
on which motors or servo controllers are installed must also be earthed with low
impedance (e.g. by using copper tape).
l
In order to keep the leakage currents and losses in the motor connecting cable as
small as possible, the servo drive should be located as close to the motor as
possible.
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The motor cable and angle encoder cable must be shielded.
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Connect the shield of the motor cable to the back panel of the control cabinet by
way of suitable shield terminals. The unshielded cable end should not be longer
than 80 mm.
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The mains-end PE connector must be connected to the PE connection point of the
supply connector [X9].
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The earthing (grounding) screw of the mounting plate must also be connected to the
mains-side PE connector via a separate earth lead:
BL 4100-D: See section 3.3
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The cross-section of each earth lead must not be smaller than the cross-section of
the supply leads (L/N or L1-L3).
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The inner PE conductor of the motor cable must be connected to the PE
connection point of the motor connector [X6].
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The signal lines must be as far away from the power cables as possible. They
should not be laid in parallel. If intersections cannot be avoided, they should be
installed at right angles if possible.
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Unshielded signal and control lines should not be used. If their use is inevitable,
they should at least be twisted.
In general, the following applies:
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Connect the inner shields to the associated pins of the connectors.
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Connect the overall shield on the motor side to the connector or motor housing over
a large contact area.
Mounting Instructions BL 4000-M and BL 4000-D
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