Rockwell Automation 1791-IOBB USER MANUAL - Manual (Page 13)

Installing Block I/O
Chapter 3
3Ć2
When using
Maximum
Network Distance
Baud Rate
Used
Maximum Capacity and
SLC-5/01 Controller 1747-DSN Scanner module* 7 blocks 230.4K 2,500 cable-feet
SLC-5/02 Controller 1747-DSN Scanner module* 30 blocks 230.4K 2,500 cable-feet
SLC-5/02 Controller 1747-SN Remote I/O
Scanner Module*
16 blocks 57.6K
115.2K
230.4K
10,000 cable-feet
5,000 cable-feet
2,500 cable-feet
* The DH-485 network, which operates independent of the RIO/DIO network, supports up to 30 DH-485 nodes (blocks or 1747-AIC
isolated couplers). The maximum DH-485 network distance is 4,000 cable-feet.
Mounting dimensions for the block I/O module are shown in Figure 3.1.
Mount the blocks horizontally with a minimum of 2” between blocks. This
air gap is necessary to maintain proper cooling air flow through the block.
Figure 3.1
Mounting Dimensions for the Block I/O Module (Cat. No. 1791-IOBA and
-IOBB)
OUTPUT
INPUT
COMM POWER
180mm
7.1"
212mm
8.35"
35mm
1.37"
8mm
0.31"
10mm
0.39"
198mm
7.8"
10mm
0.39"
16mm
0.63"
16mm
0.63"
10829-I
Depth = 84.33mm (3.32")
The operating temperature in the air gap between block I/O modules must
not exceed 55
o C (151 o F). The dimensions of the air gap required are
shown in Figure 3.2.
Installing the Block I/O