Hardware features – Rockwell Automation 21G PowerFlex 750-Series AC Drives Reference Manual User Manual
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Rockwell Automation Publication 750-RM001F-EN-P - February 2012
Chapter 2
About the PowerFlex Safe Speed Monitor Option Module
Hardware Features
The safety option features five dual-channel inputs, two sets of sourcing safety
outputs, and one bipolar safety output. You can configure dual-channel inputs to
accept a following-contact configuration with two normally closed contacts, or
one normally closed and one normally open contact. They can also be configured
for single channel operation.
These inputs also support output signal switching devices (OSSD). Each output
has integral pulse-test checking circuitry.
Figure 1 - PowerFlex 750-Series Safety Option Module
IMPORTANT
Single-channel operation does not meet SIL CL3, PL e, Cat 4 safety integrity.
TB2
TB1
S11
S11
S11
S21
S21
S21
S34
52
51
78
68
44
34
X42
X32
S42
S32
S62
S52
S82
S72
S22
S12
A2
A1