Rockwell Automation 440C Guardmaster 440C-CR30 Configurable Safety Relay User Manual - Manual (Page 68)

68 Rockwell Automation Publication 440C-UM001C-EN-P - November 2014
Chapter 9 Safety Monitoring Functions
Alternate Device The Alternate Device provides the flexibility to create other types of input
monitoring blocks. Use this block for the following types of input functions:
• Single channel OSSD
• Single channel N.C.
• Dual channel OSSD
• Dual channel 2 N.C.
• Dual channel 1 N.C./1 N.O.
• Three channel N.C.
• Three channel OSSD
Figure 74 - Alternate Device Function Block
Single Channel
Single channel safety monitoring functions require only one connection to an
input terminal. The single channel input must only be used in low-risk safety
systems.
The available input terminals are:
• 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 this setting.
When test pulses are used, the CCW automatically selects the test pulse pattern.
The single channel N.C. can use input test pulses from following terminals:
• MP_12…MP_17 (multi-purpose terminals 12…17)