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4 System Design

4 - 44

G5-series Linear Motors/Servo Drives With Built-in EtherCAT Communications

For information on an external dimensions and impedance characteristics of ZCAT3035-1330, refer to

External Dimensions on page 4-40 and Impedance Characteristics on page 4-41.

I/O signal errors can occur if control I/O is influenced by noise.

• Use completely separate power supplies for the control I/O power supply (especially 24 VDC) and

the external operation power supply. In particular, do not connect the 2 power supply ground wires.

• Install a noise filter on the primary side of the control I/O power supply.

• If Brake Interlock Output (BKIR) is used, do not use the same 24-VDC power supply for both the

brakes and the control I/O. Additionally, do not connect the ground wires. Connecting the ground

wires may cause I/O signal errors.

• If the control I/O power supply wiring is long, add 1-µF laminated ceramic capacitors between the

control I/O power supply and ground at the drive input section or the controller output section. This

will improve the noise resistance.

z Harmonic Current Measures

• Use a Reactor to suppress harmonic currents. The Reactor functions to suppress sudden and

quick changes in electric currents.

Select the proper Reactor model according to the Servo Drive to be used.

Improving Control I/O Signal Noise Resistance

Reactor to Reduce Harmonic Current

Servo Drive Reactor

Number of power

phases

Model Model

Rated

current

Inductance

Single-phase input

R88D-KN01L-ECT-L 3G3AX-DL2004 3.2 A 10.7 mH

R88D-KN02L-ECT-L 3G3AX-DL2007 6.1 A 6.75 mH

R88D-KN04L-ECT-L 3G3AX-DL2015 9.3 A 3.51 mH

Single-phase input

R88D-KN01H-ECT-L

3G3AX-DL2002 1.6 A 21.4 mH