Advant
®
Controller 450 User’s Guide
Chapter 2 Installation
2-44 3BSE 002 415R701 Rev A
2.2.15.2 Process Cabling, Shielding, Grounding, Maximum Length
Table 2-6. Process Cabling, Shielding, Grounding, max. Length
Item Concerning Action
Cables Prescribed type Communication cables
Pulse transducer cables
Shielded for AI ≥12 bit and for Low level AI (Pt,
thermocouple)
Same signal types in same cable (low level/d.c./a.c./
communication/power supply)
Signal wire and return wire in same cable
Shielding: Single
shield
Grounding:
AI, AO, DI, DO,
Modem DSTC
X008/TC562
Grounding:
Communications
pulse transducers
Same position as signal circuit
At both ends
Shielding: Double
shield
Grounding:
Outer shield
Inner shield
Both ends
As signal circuits
Cable without
shield
Grounding All signal circuits grounded at the same end
a.c. digital inputs
120 V/230 V
Max. cable length Approx.: 115 V - 230 m
230 V - 115 m
Shield connections
in EMC-proof
cabinet
Connection Cable shields which are grounded in the cabinet
must be grounded according to separate
instructions. (See Section 2.2.5, Grounding).
Shielded cables not
grounded in the
EMC-proof cabinet
Connection Capacitive decoupling is to be used in the cabinet.
Or a cable with double shield can be used where the
outer shield is grounded in the cabinet.