Allen-Bradley A-B QUALITY DL20 Series User Manual page 171

D9 D8 D7 D6 D5 D4
DL20 Terminals
Figure G.6
DL20 to DC Output Module (Catalog No. 1771-OB, -OG)
+5
VDC
OUT
D3 D2 D1 DO MS1 MS0
1771-OB DC Output Modules (12-24 VDC)
1771-OG DC Output Modules (5VDC)
Set both internal switches in the OG module ON for
high true logic.
Important Note: The 1771-OG TTL output modules 5VDC signals are
more noise susceptible than 12-24 DC signals. In applications where noise
may be a problem, it is strongly recommended that a 1771-OB DC output
module be used.
ATTENTION: Do not connect to terminal 22 (+5 VDC OUT).
Applying any voltage to this terminal will damage the DL20.
!
Appendix G
Application Notes
GND
+ 12-24 VDC (OB) -
or
+ 5 VDC (OG)
00-07 10-17
A A
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
or
-
G–19