Rockwell Automation 1747-L40 SLC 500 Fixed Hardware Style - Manual (Page 83)

Chapter 6
Starting Up Your Control System
6–10
Now that program execution has been verified, checkout of control motion
can begin. All persons involved with the programming, installation, layout
design, machine or process design, and maintenance should be involved in
making decisions for determining the best and safest way to test the total
system.
The following procedures are general in nature. Individual conditions may
warrant their modification. The basic approach is to initiate testing with the
least amount of machine motion. Only some outputs are allowed to generate
machine motion. Then additional machine motion can be gradually added,
thereby allowing any problems to be detected more easily under controlled
conditions. The following procedure provides the steps for testing machine
motion using one output at a time.
!
ATTENTION: During all phases of checkout, station a person
ready to operate an emergency–stop switch if necessary. The
emergency–stop switch will de–energize the master control relay
and remove power from the machine. This circuit must be
hardwired only, it must not be programmed.
Use the following procedures:
1. Identify the first output device to be tested and reconnect its wiring.
!
ATTENTION: Contact with AC line potential may cause injury
to personnel. When reconnecting wiring, make sure that AC
power disconnect switch is opened.
2. Place the controller in the Run mode and observe the behavior of the
output device. To do this, simulate the input conditions necessary to
energize the output in the program. If it is not practical to manually
activate an input device, use the force function to simulate the proper
input condition.
!
ATTENTION: Never reach into a machine to actuate a device,
unexpected machine operation could occur.
3. Repeat steps 1 and 2, testing each output device, one at a time.
7. Observe Control Motion