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9.1.1
Device status displays
LED
Designation
Brief description
Status LED
Shows the general device status
Power LED
Shows the status of the power supply
Safety LED
Shows the status of the safety equipment
Application status LED
Shows the identification sequence and is
reserved for future extensions
Tab. 71 Device status LEDs (status, power, safety and application status LED)
LED test
After the device is switched on, it runs through an initialisation phase. When the initialisation phase is
complete, the device performs an LED test. In the LED test, the 4 device status LEDs run through the
following colour sequence simultaneously:
–
Red
–
Yellow
–
Green
The duration of each colour corresponds to a flash period. The test is ended after one pass. By
observing them, one can tell if one of the 4 LEDs is defective.
Status LED, display of the device status
LED
Meaning
Flash-
es red
An error is present.
Flash-
es yel-
low
A warning is present, or the servo drive is currently performing a firmware update.
Lights
up
yellow
The servo drive is in the initialisation phase.
Flash-
es
green
The servo drive is ready and the output stage is switched off (Ready).
Lights
up
green
The output stage and the closed-loop controller are enabled.
Tab. 72 Status LED
Power LED, status of the power supply
Malfunctions
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Festo — CMMT-AS-C2/C4-3A-... — 2018-02