Rockwell Automation 1756-HYD02 ControlLogix Hydraulic Servo Module - Manual (Page 13)

ControlLogix™ Hydraulic Servo Module 13
Publication 1756-IN580A-EN-P - March 2003
Checking the LED Indicators
The module uses a single bi-colored LED to indicate module OK
status and bi-colored LED indicators to show individual feedback
(FDBK) and drive (DRIVE) status for both axes.
During power up, the module completes an indicator test. The OK
indicator turns red for 1 second and then turns to flashing green if the
module passes all its self tests.
Understanding Module Status Using the OK Indicator
The table below offers an explanation of the OK indicator.
If the OK
indicator
displays: The module status is: Take this action:
Off The module is not operating.
· Apply chassis power.
· Verify the module is completely
inserted in chassis and backplane.
Flashing green
light The module has passed
internal diagnostics, but it is
not communicating axis
data over the backplane.
· None, if you have not configured the
module.
· If you have configured the module,
check the slot number in the
1756-HYD02 Properties dialog box.
Steady green
light One of the following:
· Module is exchanging
axis data.
· The module is in the
normal operating state.
None
AX0 AX1
FDBK
DRIVE
OK
HYDRAULIC
FDBK
DRIVE
OK indicator