Rockwell Automation 1771-A1B_A2B_A3B_A3B1_A4B SERIES B Universal I/O Chassis Installation Instructions - Manual (Page 7)

Universal I/O Chassis 7
Publication 1771ĆIN075A-EN-P - March 2002
I/O Chassis with External Power SupplyMounting Dimensions
315mm
(12.41")
610mm
(24.01")
16-slot 1771-A4B
12-slot 1771-A3B1
356mm
(14.01")
229mm
(9. 01")
8-slot 1771-A2B
4-slot 1771-A1B
12-slot
8-slot
4-slot
16-slot
1771ĆA1B
1771ĆA2B
1771ĆA3B1
1771ĆA4B
1771ĆP1
1771ĆP2
1771ĆP7
1771ĆPS7
Power
Supply
12451ĆI
91mm
(3.6")
You can mount 1771ĆP1, ĆP2, ĆP7 and ĆPS7
power supplies on the left side plate of the
I/O chassis, or up to 5 cableĆfeet from the I/O chassis.
483mm
(19.01")
593mm
(23.32") 466mm
(18.32")
339mm
(13.32")
212mm
(8.32")
254mm
(10")
grounding
stud
178mm
(7.00")
307mm
(12.09")
25.4mm
(1.0")
use four 1/4Ć20 (M6 x 10)
mounting bolts to secure, using
slots, keyholes, or a
combination of both
Clearance depth is 221mm (8.7")
293mm
(11.53")
315mm
(12.41")
115mm
(4.53")
Depth is 183mm (7.2")
A 1771ĆPS7 power supply cannot be mounted on the side
of the 1771ĆA3B I/O chassis. See the installation data for
the 1771ĆPS7 power supply for more information on
mounting the supply to the I/O chassis.
1 cable-foot
1
46mm
(1.8")
339mm
(13.35")
465mm
(18.31")
483mm
(19.01")
9mm
(0.34")
26mm
(1.02")
178mm
(7.01")
130mm
(5.10")
1771ĆA3B
grounding studs
use 1/4Ć20 (M6 x 10)
mounting bolts (four places)