Normal operation

Displayed status

Green LED
(status)

Red LED
(fault)

No voltage or defective

OFF

OFF

Internal diagnostics fault

ON

ON

No fault

ON

OFF

Currently no fault

Last fault is displayed.

ON

Fault code

A fault is currently present

Current fault is displayed.

OFF

Fault code

 

Temperature fault

Supply voltage fault

Analog signal fault

Error in digital track A or B

Travel distance fault

Output driver fault