Allen-Bradley Compact 5000 Series User Manual

100 Rockwell Automation Publication 5069-UM004A-EN-P - April 2019
Chapter 3 Input Module Features
Field Power Loss Detection
The Field Power Loss Detection feature monitors for the loss of field-side
power on an SA power bus.
When power is lost from an SA power bus, Compact 5000 I/O digital modules
that draw power from the SA power bus detect the loss of field power and fault.
As a result, fault data is sent to the controller. Keep in mind that all points on
the module fault when a field power is lost.
Table 16 describes what happens when a field power loss condition is
detected.
To correct the issue, you must reapply field power to the test output.
Table 17 describes what happens when a field power is restored and the error
latch time, if set, has expired.
5069-OBV8S
SIL2 CPU
5069-L3100ERMS2
Compact GuardLogix
5069-OBV8S
5069-IB8S5069-IB8S
OUTPUT OUTPUT
SA Power MOD Power
Safety Modules
IMPORTANT The 5069-IB8S and 5069-IB8SK are the only Compact 5000 I/O input
modules that support Field Power Loss Detection.
Table 16 - Field Power Loss Detection - Compact 5000 I/O Safety Input Module
Test Output
Behavior
Tag Value Diagnostic Value I/O Status
Indicator
State
SA Status
Indicator
• Faults
• Turns off
• I.Testxx.FieldPowerOff
tag = 1
• I.Testxx.Fault tag = 1
FieldPowerOff diagnostic = 1 Solid red Off
Table 17 - Field Power Loss Detection - Compact 5000 I/O Safety Input Module
Test Output
Behavior
Tag Value Diagnostic Value I/O Status
Indicator
State
SA Status
Indicator
Restarts in its
commanded
state.
• I.Testxx.FieldPowerOff
tag = 0
• I.Testxx.Fault tag = 0
FieldPowerOff diagnostic = 0 Off Steady green
IMPORTANT The module can require up to 1 second to complete the recovery in addition
to the Input Error Latch Time.

Allen-Bradley Compact 5000 Series Specifications

General

Brand	Allen-Bradley
Model	Compact 5000 Series
Category	I/O Systems
Language	English