Rockwell Automation 440C Guardmaster 440C-CR30 Configurable Safety Relay User Manual - Manual (Page 65)

Rockwell Automation Publication 440C-UM001C-EN-P - November 2014 65
Safety Monitoring Functions Chapter 9
Two-Hand Control The CR30 can be configured to operate in two different types of two-hand
control, which are specified in ISO 13851. The two types are:
• Type IIIA (for low-risk safety systems)
• Type IIIC (for high-risk safety systems)
Mechanically palm-operated buttons (Bulletin 800P) or the electronic output
push buttons (Bulletin 800Z Zero-Force Touch Buttons™) should be used as
actuating devices for two hand control. The CR30 requires two buttons to be
actuated simultaneously and maintained to turn the two-hand safety monitoring
function ON. To meet the simultaneity requirement, the two buttons must be
actuated within 500 ms of each other.
Figure 68 - Two-Hand Control Function Block
The two-hand controls can be connected to the following terminals.
• EI_00…EI_11 (embedded input terminals 00…11)
• MP_12…MP_17 (multi-purpose terminals 12…17)
You can use the default Input Filter or choose to modify these settings.
When test pulses are used, the CCW automatically selects another test pulse
pattern for each input. The two-hand control can use input test pulses from
following terminals:
• MP_12…MP_17 (multi-purpose terminals 12…17)