T200 User's Manual SECTION 2: SAFETY INSTRUCTIONS
PAGE 2-14
2.3.4 EMC requirements for cables
Avoid close parallel routing of signal cables and power cables. Always use the minimum length of cable necessary and
install all cables in a fixed routing.
Data signal cables, motor power and resolver/signal cables, regen resistor cables and power input cables shall have
segregated routings. Where cable routings must intersect, it is recommended that they intersect at an angle of 90 degrees,
to minimise EMC noise coupling.
Where signal and power cables must run in parallel it is recommended that these cables are separated by at least 20 cm.
Where possible cables shall be routed in earthed shielded cable ducting, to minimise electromagnetic noise coupling.
Use shielded cable to connect the external regen resistor (if installed) to the T200 power supply. The length of this cable
shall be as short as possible. The shields of these voltage supply cables shall be earthed to Chassis Earth using the
optional EMC kit or the panel earth bar. Alternatively, if the cable is required to pass through an enclosure panel earthed
to Chassis Earth, the shield may be earthed to the panel by use of a 360 degree metal cable gland. (Refer to Section 2.3
and Section 3.13 for safety and other relevant installation requirements for Regen resistors).
Cables supplying external d.c. supply voltages to the T200 Servo-drive (For example, the 24 Vd.c. supply) must be as
short as possible. The supply wires shall be twisted together or alternatively shielded cable shall be used.
Cables connecting the 325 V d.c. bus from the T200 Servo-drives must be as short as possible. The supply wires shall be
twisted together.
Motor power cables must be shielded with the cable shield securely connected to Chassis Earth at both ends of the cable.
At the T200 end of the cable the shield shall be earthed to Chassis Earth using the optional EMC kit or the panel earth
bar.
Motor resolver/signal cables must be shielded with the cable shield securely connected to Chassis Earth at both ends of
the cable.
Signal cables must be shielded with the cable shield securely connected to make a good HF earth bond to Chassis Earth
at both ends of the cable.
User's whose machine installations require for CE-
Compliance should read Section 2.3.4.
Required for
CE-Compliance
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