Allen-Bradley ClutchBrake PLC-5 Series - Page 74

4–12 Write Ladder Logic
Publication 65566.5.1 - October 1996
Figure 4.11
Example
Commands to Select Single Mode B151/13 and
Continuous Mode B151/14 from a Remote Selector
Use these mode-select command bits to change operating mode from
a remote location such as a master controller.
Important: The main selector switch must be in remote mode.
| |
| Line Supervisor Remote |
| Single Stroke Mode Single Mode|
| I:040 B151 |
+–––] [––––––––––––––––––––––––––––––––––––––––––––( )––|
| 03 13 |
| |
| Line Supervisor Remote |
| Continuous Mode Continuous Mode |
| I:040 B151 |
+–––] [––––––––––––––––––––––––––––––––––––––––––––( )––|
| 04 14 |
Figure 4.12
Example
Commands to Enable Crowbar Relay B151/15 and
to Let Auxiliary V alves Cycle W ith Clutch V alves B151/16 and B151/17
Program these command bits unconditionally to suit your
application. Use the Always False Instruction (AFI) to maintain
B151/16 and/or B151/17 in the OFF state.
| Enable |
| Crowbar |
| Relay |
| B151 |
+––––––––––––––––––––––––––––––––––––––––––––––––––( )––|
| 15 |
| Auxiliary |
| Cycles With|
| Clutch |
| B151 |
+–––]AFI[––––––––––––––––––––––––––––––––––––––––––( )––|
| 16 |
same for B151/17
Figure 4.13
Example
off the Command for Main Motor Forward B151/18
Use this command bit to detect motor rotation. In this example,
rotational status signals from an A-B dc drive are inputs to an input
module at I:051.
| Drive Drive Main |
| Running Running Motor |
| in Reverse Forward |
| I:051 I:051 B151 |
+–––] [––––––––––––]/[–––––––––––––––––––––––––––––( )––|
| 05 06 18 |