Siemens QUADLOG, Инструкция по установке и обслуживанию, Страница: 28 / 66

INSTALLATION SD39RIO-1
January 2001
2-16
3. At the appropriate IOBUS screw terminals on the Remote I/O Rack’s backplane (Figure 2-4), provide
strain relief for the W2072 cable end by securing it to one of the rack’s tie points (Figure 2-5). Connect
the W2072 cable conductors (wires) to the screw terminals. Tighten screw terminals by applying 78 in oz
(0.55 Nm) of torque. Wire stripping and color code information for making connections are provided in
Table 2-1 and Figure 2-11 respectfully.
4. Tag each W2072 cable end as needed for identification.
To connect a W2072 IOBUS cable between two Remote I/O Racks:
1. Determine the length of W2072 cable needed to connect from the first Remote I/O Rack to the second
Remote I/O Rack. Allow slack for cable stripping, dressing, tagging, and strain relief at each end.
2. At the appropriate IOBUS OUT screw terminals on the first Remote I/O Rack’s backplane (Figure 2-4),
provide strain relief for the W2072 cable end by securing it to one of the rack’s tie points (Figure 2-5).
Connect the W2072 cable conductors (wires) to the screw terminals as shown in Figure 2-13. Tighten
screw terminals by applying 78 in oz (0.55 Nm) of torque. Wire stripping and color code information for
making connections are provided in Table 2-1 and Figure 2-11 respectfully.
3. At the appropriate IOBUS IN screw terminals on the second Remote I/O Rack’s backplane (Figure 2-4),
provide strain relief for the W2072 cable end by securing it to one of the rack’s tie points (Figure 2-5).
Connect the W2072 cable conductors (wires) to the screw terminals as shown in Figure 2-13. Tighten
screw terminals by applying 78 in oz (0.55 Nm) of torque. Wire stripping and color code information for
making connections are provided in Table 2-1 and Figure 2-11 respectfully.
4. Tag each W2072 cable end as needed for identification.
Table 2-1 IOBUS Cable Color Code and Connection Pinouts
Terminal Block/Signal Wire Color Code
DB15 Connector
Pinout
DB25 Connector
Pinout
IOBUS + Orange\White Stripe 1 1
IOBUS -
Twisted
Pair White\Orange Stripe 2 2
MRET (Redundancy Signal) White\Blue Stripe 3 3
MOK (Redundancy Signal) White\Green Stripe 4 4
MEN (Redundancy Signal) Blue\White Stripe 5 5
OKIN / OKOUT
(Redundancy Signal) Green\White Stripe 6
(OKIN)
6
(OKOUT)
SHIELD Bare wire - -
- - - 7 to 25 unused