Rockwell Automation 1771-OFE/B Analog Output Module User Manual - Manual (Page 23)

2-9
Publication 1771Ć6.5.30 - November 1998
The analog devices connect to the analog module through a field
wiring arm (cat. no. 1771-WC). The field wiring arm pivots on the
front of the I/O chassis to connect with the module. You can remove
the module from the chassis without disconnecting user wiring
because wiring connections are made on the field wiring arm. The
connection diagram (Figure 2.5) shows connections to the field
wiring arm.
!
ATTENTION: To avoid injury to personnel and
damage to equipment, disconnect and lockout ac power
from the processor and system power supplies before
wiring the module.
Figure 2.5
Connection of Analog Devicesto the Field Wiring Arm (cat. no.
1771ĆWC)
A
0
1
2
3
4
5
6
7
B
Channel 1 output (+) lead
Channel 1 output (Ć) lead
Channel 2 output (+) lead
Channel 2 output (Ć) lead
Channel 3 output (+) lead
Channel 3 output (Ć) lead
Channel 4 output (+) lead
Channel 4 output (Ć) lead
Not used
Not used
12878
Field Wiring Arm
Cat. No 1771ĆWC
The sensor cable must be shielded. The shield must:
• extend the length of the cable, but be connected only at the 1771
I/O chassis
• extend up to the point of termination
Important: The shield should extend to the termination point,
exposing just enough cable to adequately terminate the
inner conductors. Use heat shrink or another suitable
insulation where the wire exits the cable jacket.
User
Analog
Device
Functional
Ground
Connect the Wiring