Manual

10
7.3 INSTALLATION ACCORDING TO EMC REQUIREMENTS
The SM Series
™
Series can be installed to meet the European stan-
dards Electromagnetic Compatibility (EMC) requirements. These
requirements govern the permissible electromagnetic emissions and
immunity, both radiated and conducted, of a drive system.
The EMC requirements apply to the final installation in its entirety,
not to the individual components used. Because every installation is
different, the recommended installation should follow these guidelines
as a minimum. Additional equipment (such as ferrite core absorbers
on power conductors) or alternative wiring practices may be required
to meet conformance in some installations.
Filter: The input to the drive (or group of drives) must include a filter
to reduce the electrical noise reflected back to the AC Line.
Installation: Shielded cable must be used for all control and power
cables and exposed wiring must be kept as short as possible. The
figure to the right shows the control cable (B) and motor cable (C)
with the shield grounded with clamps (A) to a grounded, electrically conductive mounting panel (D).
The motor cable must be of a low capacitance specification:
core / core ≤ 75 pF/m, core/shield ≤ 150 pF/m
8.0 POWER WIRING
Hazard of electrical shock! Capacitors retain charge after power is removed.
Disconnect incoming power and wait until the voltage between terminals B+ and
B- is 0 VDC before servicing the drive.
Note drive input and output current ratings and check applicable electrical codes for required wire type
and size, grounding requirements, over-current protection, and incoming power disconnect, before
wiring the drive. Size conservatively to minimize voltage drop.
Input fusing and a power disconnect switch or contactor MUST be wired in series with terminals L1 and
L2/N (on single-phase input models), or terminals L1, L2, and L3 (on three-phase input models). This
disconnect must be used to power down the drive when servicing, or when the drive is not to be operated
for a long period of time, but should not be used to start and stop the motor.
Repetitive cycling of a disconnect or input contactor (more than once every
two minutes) may cause damage to the drive.
DANGER
CAUTION