Installation manual

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Danaher Motion Kollmorgen 08/04 Wiring

SERVOSTAR S Installation M-SS-001-01 Rev. T 17

Common mode currents commonly occur from noise spikes created

by the PWM switching frequency of the drive. The use of a ferrite or

iron-powder core toroid places common mode impedance in the

line between the motor and the drive. The use of a common mode

choke on the motor leads increases signal integrity of encoder

outputs and associated I/O signals. The following is a list of toroidal

and ferrite cores used to make common mode chokes:

Manufacturer Manuf. Part # Size

Micrometals T400-26D

OD 4 in (102 mm), ID 2.25 in. (57.2 mm.)

HT 1.3 in (33 mm.)

Micrometals ST102-267

OD 1.025 in(26 mm) ID 0.6 in. (15.2 mm.)

HT .475 in (12.1 mm.)

Micrometals ST150-275B

OD 1.52 in (38.6 mm) ID 0.835 in. (21.2 mm.)

HT .825 in (21 mm.)

Micrometals ST200-275B

OD 2.01 in (51.1 mm) ID 1.24 in. (31.5 mm.)

HT 1.025 in (26 mm.)

Magnetics 77930-A7

OD 1.09 in (27.7 mm) ID .555 in. (14.1 mm.)

HT .472 in (11.99 mm.)

Fair-Rite 2643803802

OD 2.4 in (61 mm) ID 1.4 in. (35.55 mm.)

HT 0.5 in (12.7 mm.)

Manufacturer

Manufacturer’s

Part #

Danaher Motion

Part #

Description

Schaffner RD7137-36-0m5 A-96843-005

500 µH 3 phase common

mode choke. 36 amps

continuous.

Schaffner RD8137-64-0m5 A-96843-010

500 µH 3 phase common

mode choke. 64 amps

continuous.

4.4.3 I/O FILTERING

I/O filtering, while not a necessity for CE compliance, may be

desirable depending on system installation, application, and

integration with other equipment. To avoid unwanted signals

entering and disturbing the drive system or other associated

equipment, place ferrite cores on I/O lines. The following chart lists

recommended ferrite parts used for I/O filtering and noise

attenuation. These parts are ideal for providing in-line common

mode impedance for I/O lines (Fair-Rite Products Corporation also

has a varied selection for most applications).

Manufacturer Manufacturer’s Part #

Danaher Motion

Part #

Description

Ferrishield SS33B2032 A-96770-003 Clamp on core

Ferrishield SS33B2036 A-96769-005 Clamp on core

Ferrishield FA28B2480 A-96771-003

Clamp on core -

flat cable clamp

Ferrishield SA28B4340 A-96772-009

Clamp on core -

flat cable clamp

Fair-Rite 2643167251