Allen-Bradley SmartGuard 600 User Manual

Publication 1752-UM001A-EN-P - October 2006
172 Function Blocks Command Reference
Two-hand Control Function
Block
Two-hand Control Function Block Diagrams
The Two-hand Control function block enables monitoring the status
of a two-hand switch. The two-hand control function block can be
used with a suitable two-hand switch to meet the requirements of
type III C in EN 574, Two-hand Control Devices, Functional Aspect -
Principle for Design.
The output signal turns on only if both inputs from the two-hand
switch are active and satisfy the requirements of EN 574. The Output
Enable signal turns off if the inputs from the two-hand switch do not
satisfy the requirements of EN 574, an input is inactive, or if an error
in the function block is detected.
Two-hand Control Function Block Optional Outputs
Optional outputs can also be used in programming. To display these
optional outputs, check the appropriate checkbox on the Out point
tab of the Function Block Properties dialog in the Logic Editor of
RSNetWorx for DeviceNet software.
• Discrepancy Error Pair 1
• Discrepancy Error Pair 2
Two-hand Control Function Block Fault Present Output Setting
The Fault Present output can also be used in programming. To enable
this output, check the Fault Present checkbox on the Out point tab of
the Function Block Properties dialog.
!
!
!
Output
Enable
Output Enable
Discrepancy Error (pair 1)
Default Connections
Maximum I/O for Two-hand Control Function
Input 1
(pair 1 - NO)
Input 2
(pair 1 - NC)
Input 3
(pair 2 - NO)
Input 4
(pair 2 - NC)
Discrepancy Error (pair 2)
Fault Present
Input 1
(pair 1 - NO)
Input 2
(pair 1 - NC)
Input 3
(pair 2 - NO)
Input 4
(pair 2 - NC)

Allen-Bradley SmartGuard 600 Specifications

General

Brand	Allen-Bradley
Model	SmartGuard 600
Category	Controller
Language	English