Rockwell Automation Publication 5069-UM004A-EN-P - April 2019
111
Output Module Features
Chapter 4
Field Power Loss Detection
The Field Power Loss Detection feature monitors for the loss of field power,
that is, 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 that 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.
describes what happens when a field power loss
condition is
detected
.
To correct the issue, you must reapply field power to the output module.
5069-OBV8S
SIL2 CPU
5069-L3100ERMS2
Compact GuardLogix
5069-OBV8S
5069-IB8S
5069-IB8S
OUTPUT
OUTPUT
SA
Po
w
er
M
O
D
Po
w
er
DC INPUT
5069-IB16
DC OUTPUT
5069-OB16
ANALOG INPUT
5069-IY4
SA P
ow
er
MOD P
ow
er
ANALOG OUTPUT
5069-OF8
DC INPUT
5069-IB16
Standard Modules
Safety Modules
™
NET B1
LINK B1
NET A1
LINK A1
NET A2
LINK A2
SPEED X1
LINK X1
OK
RUN
FORCE
FAN 1
SD
FAN 2
Compact
Logix
5480
B1
A1
1
2
A2
5069-L46ERMW
CONTROLLER
UPS
MP
SA
R
B
F
R
B
F
DC INPUT
5069-IB16
DC OUTPUT
5069-OB16
ANALOG INPUT
5069-IY4
ANALOG OUTPUT
5069-OF8
DC INPUT
5069-IB16
IMPORTANT
The following Compact 5000 I/O digital output modules support Field Power
Loss Detection:
• 5069-OA16
• 5069-OB8
• 5069-OW16
• 5069-OBV8S
• 5069-OBV8SK
The 5069-OB8, 5069-OBV8S, and 5069-OBV8SK modules receive field-side
power via LA power terminals on the module. These modules do not draw
current from the SA power bus.
The description of Field Power Loss Detection in this section applies to the
5069-OB8, 5069-OBV8S, and 5069-OBV8SK modules. The difference is that
when field-side power is lost on the 5069-OB8, 5069-OBV8S, and
5069-OBV8SK modules, it is lost from the LA terminals.
Table 24 - Field Power Loss Detection - Compact 5000 I/O Digital Output Modules
Output
Behavior
Tag Value
Diagnostic Value
I/O Status
Indicator State
SA Status
Indicator
• Faults
• Turns off
One of the following:
• I.Ptxx.Fault tag = 1
(5069-OA16, 5069-
OB8, and 5069-OW16)
• I.Ptxx.FieldPowerOff
tag = 1 (5069-OBV8S or
5069-OBV8SK)
• I.Ptxx.Fault tag = 1
(5069-OBV8S or 5069-
OBV8SK)
FieldPowerOff diagnostic = 1
• Flashing Red
(5069-OA16,
5069-OB8, and
5069-OW16)
• Solid Red
(5069-OBV8S
or 5069-
OBV8SK)
Off