Enable switch function block error handling, Enable switch function block timing charts – Rockwell Automation 1752-L24BBBE SmartGuard 600 Controllers User Manual User Manual

Page 256

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256

Rockwell Automation Publication 1752-UM001E-EN-P - June 2014

Appendix D

Function Blocks Command Reference

Enable Switch Function Block Error Handling

Use this table to diagnose and reset a discrepancy error in the Enable Switch
function block.

Enable Switch Function Block Timing Charts

Figure 79 - Normal Operation and Discrepancy Error

Figure 80 - Grip Signal and Release Signal

Table 31 - Error Detection and Reset for Enable Switch Function Block

Error

Condition

Status When an Error Occurs

To Reset the Error Condition

Output Enable

Fault

Present

Error Output

Discrepancy
error at input
pair

OFF
(safety state)

ON

Discrepancy
Error: ON

Remove the cause of the error, then
either:
1. Make both input pairs 1 and 2

inactive and active again.

2. Change the controller’s operating

mode to Idle and back to Run.

Input 1 (NO)

Output Enable

Discrepancy Time

Fault Present

Input 2 (NO)

Discrepancy Error

Grip Input

Grip Enable

Release Input

Release Enable

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