Tolomatic Hardware & Installation Guide:
ACS Drive/Controller
• 5-8 •
5:
c o n n e c t i o n s & c a b l e s
The selection of cables has a profound impact on network performance and
reliability. Selecting the correct cable requires an understanding of the environment
where the cable is installed.
Due to high data rate and reliability considerations, at the minimum, Cat5e cables
should be used with the ACS Drive. If the cables are made on site, they must be
tested to meet performance criteria set according to TIA/EIA -568-B standard.
This cable definition is the general cable requirements for copper and fiber cabling
installations.
The following information on cables is from the ODVA standard. Reference Section
8-9.2.3.6 of the ODVA EtherNet/IP Standard v. 1.11 for additional information.
Patch Cord Length
EtherNet/IP specifications limit the channel to 100 meters or up to 90 meters
horizontal wiring with two 5-meter patch cords. Some applications will require
longer patch cords. In these applications the total length of horizontal wiring must
be adjusted to compensate for the added loss of each connector pair and additional
patch cord length beyond 10m.
(102-H)
C =
(1 + D)
(1)
Where:
C is the maximum combined length (m) of the work area cable, equipment cable,
and patch cord
H is the length (m) of the horizontal cable (H + C </= 100 m)
D is a de-rating factor for the patch cord type (0.2 for 24 AWG UTP/24 AWG ScTP
and 0.5 for 26 AWG ScTP). The de-rating factors are based on COMMERCIAL
cables. Other constructions, such as high flex, may have different performance.
Consult the manufacturer for information.
W is the maximum length (m) of the work area cable.
T is the total length of horizontal, patch and equipment cords.
The maximum stranded cable length is limited to 85mm for the channel with the
standard 20% derating for standard stranded cables.
