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EM3E Series EtherCAT Stepper Drive User Manual
14
interference
Please connect surge absorber to inductive device,such as anti-parallel diode for DC coil,
parallel RC-snubbers circuit for AC coil.
3.2.3 EtherCAT Communication Cable
Single-core cables can be used for fixed applications, while multi-core cables are
recommended for flexible applications
Specifications
Item
Type A (Cable-fixed)
Type B (Cable Flexible)
Cross-sectional area
AWG 22/1(Single solid root)
AWG 22/7 (7x0.254mm)
Nominal/characteristic
impedance (tolerance)
100
Ω
(15
Ω
)(IEC61156-5)
Balanced or Unbalanced
Balanced
Loop resistance
≦
115
Ω
/Km
Insulation resistance
≧
500M
Ω
/Km
Transmission impedance
≦
50m
Ω
/m(10MHZ)
Maximum time delay
≦
550ns/100m
Time delay deviation
≦
20ns/100m
Shielding
S/FTQ (Outer stranded shield/inner layer)
Temperature
≦
60º
Requirements:
(1) It is recommended to use a Category 5 Fast Ethernet cable with double shielding or better,
(2) The length between two nodes is recommended to not exceed 100 meters.