Warner Electric CBC-450 - Manual (Page 15)

9. Optional Channel 2 Override Input Wiring
NOTe: If using the Channel 2 override input
(start override) the switching circuit must be
a maintained type so that Channel 1 or
Channel 2 input switching will have no
effect on input switching.
a. Connect the output side of the switching
circuit to the Channel 2 override input
negative side (-) of the opto-coupler at
Terminal 6 of Terminal Block TB-1.
1. Maintained switch, normally open
contact
2. Normally open relay contact
3. Open collector output of NPN
Transistor in PLC output module or
computer card.
Tighten Terminal 6 of Terminal Block TB-1.
b. Connect the input side of the Channel 2
override switch to negative side (-) of the
power source.
1. External negative (-) of external DC power
source if used.
2. Negative (-) or DC common of the internal
voltage source, Terminal 8 of Terminal
Block TB-1.
10. Double check all input wiring and switching
circuit hook-up and connection to insure
proper wiring and connections. Refer to fig-
ures 13a through 16a.
11. Make sure all Terminal Block connections on
TB-1 are securely tightened at this time.
12. Double check any external sensor power wiring
and connections. Refer to the appropriate
sensor data sheets for confirmation.
13. This completes the input switching circuit
wiring. Make sure all debris, insulation chips or
wire fragments are cleaned up and control
circuit boards blown off with dry air before
proceeding.
14. Proceed to the start up section of the manual
for start up and check out.
Figure 13a
1
2
3
4
5
6
7
8
Channel 2
Input
+12 VDC
START
STOP
START
OVERRIDE
DC COM
+
-
Channel 1
Input
+
-
Channel 2
Override
+
-
TB-1
P-239-23 • 819-0500 Warner Electric • 800-825-9050 15