Omron NX-SL series User Manual

4 Safety Function Blocks
4 - 130
NX-series Safety Control Unit Instructions Reference Manual (Z931)
• This FB provides a type III, two-hand control function as defined in ISO 13851 (EN 574). If S_Button1
and S_Button2 are set to TRUE in the correct order within 500 ms, the S_TwoHandOut output is also
set to TRUE.
• This FB also controls releasing of both buttons before it sets the S_TwoHandOut output to TRUE
again.
Note Transitions to the Idle state from any other state are not shown for when Activate changes to FALSE. How-
ever, the transition to the Idle state has the highest priority (0).
Function
State Transition Diagram
1
2
2
3
3
4
4
1
1
1
1
1
1
2
2
2
2
2
2
3
3
3
3
3
1
0
Idle
0000
Init
8001
Activate
NOT Activate
Error 1
C001 B1
C002 B2
C003 B1&B2
1
Buttons
Released
8004
Button 1
Released
8008
Button 2
Released
8007
Locked Off
8009
Locked On
8019
1
Error 2
C004 B1
C005 B2
C006B1&B2
1
1
Button 2
Actuated
8006
Button 1
Actuated
8005
Buttons
Actuated
8000
B1
B2
NOT (B1 OR B2)NOT (B1 OR B2)NOT (B1 OR B2)
NOT (B1 OR B2)
B1 OR B2
B1 ANDB1 AND
NOT B2NOT B2
B1 AND
NOT B2
NOT (B1 OR B2)
NOT (B1 NOT (B1
OR B2)OR B2)
NOT (B1
OR B2)
NOT (B1 OR B2)
NOT (B1 OR B2)
NOT (B1 OR B2)
NOT (B1 OR B2)
NOT (B1 OR B2)
B1 AND B2
NOT (B1 AND B2)
B1 AND NOT B2
NOT B1 AND B2NOT B1 AND B2NOT B1 AND B2
NOT B1 NOT B1
AND B2AND B2
NOT B1
AND B2
B1 AND B2
B1 AND NOT B2B1 AND NOT B2B1 AND NOT B2
B1 AND NOT B2B1 AND NOT B2B1 AND NOT B2
NOT B1 AND B2
B1 AND B2
B1 AND B2 AND
Timer < 500ms
B1 AND B2 AND
Timer < 500ms
TimerelapsedTimerelapsed
(>500ms)(>500ms)
Timerelapsed
(>500ms)
Timerelapsed
(>500ms)
NOT (B1 OR B2)
Ready =FALSE
Ready =TRUE
S_TwoHandOut=FALSE
S_TwoHandOut=TRUE
B2=S_Button2
B1=S_Button1

Omron NX-SL series Specifications

General

Brand	Omron
Model	NX-SL series
Category	Control Unit
Language	English