1391B-ESAA15-AQB Product Overview:
The immunity of 1336 SPIDER drives to externally generated interference is good. Usually, no special precautions are required beyond the installation practices provided in this publication.
Since coils can generate severe electrical transients, it is recommended that the coils of DC energized contactors associated with drives be suppressed with a diode or similar device. AC supplied coils should utilize an R-C suppressor.
Careful attention must be given to the arrangement of power and ground connections to the drive to avoid interference with nearby sensitive equipment. The cable to the motor carries switched voltages and should be routed well away from sensitive equipment.
The ground conductor of the motor cable must be connected to the drive ground (PE) terminal directly. Connecting this ground conductor to a cabinet ground point or ground bus bar may cause high frequency current to circulate in the ground system of the enclosure.
The motor end of this ground conductor must be solidly connected to the motor case ground.
Shielded cable must be used to guard against radiated emissions from the motor cable. The shield must be connected to the drive ground (PE) terminal and the motor ground as outlined above. Armored cable can be used if radiation is not a concern.
