Warner Electric CBC-450 - Manual (Page 42)

NOTe: If using the Channel 2 override input
(start override) the switching circuit must be
a maintained type so that Channel 1 input
switching will have no effect on the output
functions when maintained.
a. Connect the output side of the switching
circuit to the Channel 2 override input,
positive side (+) of the opto-coupler at
Terminal 5 of Terminal Block TB-1.
1. Maintained switch, normally open
contact
2. Normally open relay contact
3. Open collector output of PNP
Transistor in PLC output module or
computer card.
Tighten Terminal 5 of Terminal Block TB-1
securely at this time.
b. Connect the input side of the Channel 2
override switch to positive side (+) of the
DC power source.
1. External positive (+) of external DC
power source if used.
or,
2. Positive side (+) of the internal DC power
source at Terminal 7 of Terminal Block
TB-1. Tighten Terminal 7 securely at this
time.
9. Double check all input wiring and switching
circuit connections to insure proper wiring and
hook-up. Refer to figures 25a through 28a.
10. Make sure all terminal block connections on
TB-1 are securely tightened at this time.
11. Double check to insure any external sensor
power wiring and connections are correct and
secured properly. Refer to the appropriate
sensor data sheets for connections.
12. 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.
13. Proceed to the start up section of the manual for
start up and check out.
1
2
3
4
5
6
7
8
Channel 2
Input
+12 VDC
DC COM
+
-
Channel 1
Input
+
-
Channel 2
Override
+
-
TB-1
Switch
Device
CLOSED–CH 1 OUT
OPEN–CH 2 OUT
Switch
Device
Figure 25a
42 Warner Electric • 800-825-9050 P-239-23 • 819-0500