Omron NX-SL series User Manual

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4 Safety Function Blocks
NX-series Safety Control Unit Instructions Reference Manual (Z931)
4
SF_TwoHandControlTypeII
• This FB provides a type II, 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, 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
1
1
1
1
1
1
1
1
1
2
2
2
2
2
3
3
3
Idle
0000
Init
8001
Error
C001 B1
C002 B2
C003 B1&B2
Locked On
8019
Button 1
Actuated
8005
Button 2
Actuated
8006
Buttons
Released
8004
Button 2
Released
8007
Button 1
Released
8008
Locked Off
8009
2
3
2
3
3
0
3
NOT (B1 OR B2)
NOT (B1 OR B2)
NOT (B1 OR B2)
NOT (B1 OR B2)
NOT (B1 OR B2)
NOT (B1 OR B2)
NOT B1 AND B2
NOT B1 AND B2
NOT B1 AND B2
B1B1B1
B2
B1 AND B2
B1 AND B2
B1 AND NOT B2B1 AND NOT B2B1 AND NOT B2
NOTB1 AND B2NOTB1 AND B2NOTB1 AND B2
NOT (B1 OR B2)
NOT (B1 OR B2)
NOT (B1 OR B2)NOT (B1 OR B2)NOT (B1 OR B2)
B1 OR B2
B1 AND B2
B1 AND NOT B2
Activate
NOT Activate
B1 AND NOT B2
B1 AND B2
B1 AND B2
B1 AND NOT B2B1 AND NOT B2B1 AND NOT B2
Ready =FALSE
Ready =TRUE
S_TwoHandOut=TRUE
S_TwoHandOut=FALSE
Buttons
Actuated
8000
1
B2=S_Button2
B1=S_Button1
2

Omron NX-SL series Specifications

General

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