Rockwell Automation 1770 DH,DHII,DH485 CABLE - Manual (Page 91)

Constructing a DH II Cable System
Chapter 6
6-2
Mount the tap no more than 11 inches (28.0 cm) from the bottom or left side
of the interface module to make sure the dropline cable bend-radius is not
less than 3 inches (7.6 cm).
Do not mount the tap in a position that routes the dropline cable over the ac
power terminals on the interface module.
Do not allow the metal shell of the tap to touch a conductive surface.
If you are using a PLC-3 interface module (catalog numbers 1779-KP3 or
1779-KP3R) you must mount the tap no more than 5 inches (12.7 cm) from
the PLC-3 chassis. You can mount the tap on the side of the chassis only if
the interface module is at the end of the chassis.
Figure 6.1 shows the dimensions of a tap.
Figure 6.1
Dimensions of a tap.
25mm
(1.0 in)
38mm
(1.5 in)
54mm
(2.1 in)
79mm
(3.1 in)
89mm
(3.5 in)
6mm
(0.2 in)
Clearance Depth:
77mm (5 in)
Use No. 5
mounting bolts
2 places
12644