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4 System Design
4-4
8
G5 Series AC Servo Drives With Built-in EtherCAT Communications, Linear Motor Type
Positioning can be affected and I/O signal errors can occur if control I/O is influenced by noise.
•
Use completely separate power supplies for the control 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 power supply.
•
If Brake Interlock Output (BKIR) is being used, do not use the same 24-VDC power supply for both
the brakes and the control I/O.
•
If the control power supply wiring is long, add 1-µF laminated ceramic capacitors between the control
power supply and ground at the drive input section or the controller output section. This will improve
the noise resistance.
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.
This section explains the criteria for selecting the connection components required to improve noise
resistance.
Improving Control I/O Signal Noise Resistance
Reactor to Reduce Harmonic Current
Servo Drive model
Reactor
Model
Rated
current
Inductance
Type
R88D-KN01H-ECT-L (For single-phase input)
3G3AX-DL2002
1.6 A
21.4 mH
DC reactor
R88D-KN01L-ECT-L
R88D-KN02H-ECT-L (For single-phase input)
3G3AX-DL2004
3.2 A
10.7 mH
R88D-KN02L-ECT-L
R88D-KN04H-ECT-L (For single-phase input)
3G3AX-DL2007
6.1 A
6.75 mH
R88D-KN04L-ECT-L
R88D-KN08H-ECT-L
R88D-KN10H-ECT-L (For single-phase input)
3G3AX-DL2015
9.3 A
3.51 mH
R88D-KN15H-ECT-L (For single-phase input)
3G3AX-DL2022
13.8 A
2.51 mH
R88D-KN08H-ECT-L
R88D-KN10H-ECT-L
R88D-KN15H-ECT-L (For 3-phase input)
3G3AX-AL2025
10.0 A
2.8 mH
AC reactor
R88D-KN20H-ECT-L
R88D-KN30H-ECT-L
3G3AX-AL2055
20.0 A
0.88 mH
R88D-KN50H-ECT-L
3G3AX-AL2110
34.0 A
0.35 mH
R88D-KN75H-ECT-L
R88D-KN150H-ECT-L
3G3AX-AL2220
67.0 A
0.18 mH
R88D-KN06F-ECT-L
R88D-KN10F-ECT-L
R88D-KN15F-ECT-L
3G3AX-AL4025
5.0 A
7.7 mH
R88D-KN20F-ECT-L
R88D-KN30F-ECT-L
3G3AX-AL4055
10.0 A
3.5 mH
R88D-KN50F-ECT-L
3G3AX-AL4110
17.0 A
1.3 mH
R88D-KN75F-ECT-L
R88D-KN150F-ECT-L
3G3AX-AL4220
34.0 A
0.74 mH
Selecting Other Parts for Noise Resistance