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2.4
Cabling Considerations,
Spacing, continued
Table 2-6 - Conduit spacing
Cable
Class
Data 1
Data 2
Data 3
Data 3A
Data 4
Data 4A
Cable, wire and
conduit selection
10/01
Data 1
Data 2
mm (in.)
mm (in.)
25.4 (1)
25.4 (1)
76.2 (3)
76.2 (3)
76.2 (3)
76.2 (3)
304.8 (12)
228.6 (9)
304.8 (12)
304.8 (12)
Select the proper cables for each type of system connection. All
Programmable Logic Controller (such as the FSC) system wires and
cables can be classified into two categories:
• High level conductors
– used to carry high voltage and/or high current,
– typically IEEE 518 Data 2, Data 3, and Data 4 categories, and
– include AC I/O lines; high level DC I/O lines connected to such
devices as switches, relays, or solenoids; and AC power lines.
• Low level conductors
– used to carry low voltage and/or low current,
– typically IEEE 518 Data 1 category, and
– include communication cables; DC I/O lines connected to solid state
devices such as proximity switches or photoelectric sensors; TTL
signal lines; analog signal lines; encoder signal lines; and motion
control signal lines.
FSC Safety Manager Installation Guide
Continued
Data 3
Data 3A
mm (in.)
mm (in.)
76.2 (3)
76.2 (3)
76.2 (3)
76.2 (3)
0.0 (0)
0.0 (0)
0.0 (0)
152.4 (6)
152.4 (6)
228.6 (9)
Data 4
Data 4A
mm (in.)
mm (in.)
304.8 (12)
304.8 (12)
228.6 (9)
304.8 (12)
0.0 (0)
152.4 (6)
152.4 (6)
228.6 (9)
0.0 (0)
0.0 (0)
Continued on next page
27
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