Emergency Stop Pushbutton Monitoring (E-Stop) - Omron G9SP Series Reference Manual

Safety Device Function Blocks
3-5-3

Emergency Stop Pushbutton Monitoring (E-Stop)

Basic Function
Diagram
General Description
Startup
Set Parameters
Optional Output
Setting
Fault Present Output
Setting
Truth Tables
The Emergency Stop Pushbutton Monitoring function block allows the user to
monitor an emergency stop pushbutton switch.
The Emergency Stop Pushbutton Monitoring function block allows the user to
monitor an emergency stop pushbutton switch.
The Output Enable signal will turn ON if the input from the emergency push-
button being monitored is active. The Output Enable signal will turn OFF if the
input is inactive or if an error is detected for the function block.
Precautions for Correct Use
A manual reset function is required for emergency stop applications. When
using the Emergency Stop Pushbutton Monitoring function block, you must
also use the Reset function block.
All errors are turned OFF and all timers are reset at the start of operation.
Parameter
Input Type Single Channel
Dual Channel Equivalent
Dual Channel Complementary
Discrepancy Time 0 to 30 s in 10-ms increments
A discrepancy time check will not be performed
if 0 is set.
The timer SV must be longer than the cycle time.
The following error output can also be used in programming. To enable this
optional output, select the check box on the Output Point Tab Page of the
function block properties dialog box.
• Discrepancy Error
A Fault Present output can also be used in programming.
To enable this output, select the Fault Present check box on the Output Point
Tab Page of the function block properties dialog box.
Setting: Single Channel
Input 1 Output
Enable
(NC)
0
1
0: OFF, 1: ON
Default
Setting range
0
1
Section 3-5
Maximum Number of Outputs
Default setting
Dual Channel
Equivalent
30 ms
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